cargo update

removed windows headings changed scripts for building
Update webview version - see https://github.com/tauri-apps/tauri/issues/2570#issuecomment-916780781
2021-11-10 11:44:20 +00:00 · 2021-11-10 09:29:19 +00:00 · 2021-11-10 09:06:16 +00:00 · 2021-11-10 08:45:43 +00:00
552 changed files with 21360 additions and 46130 deletions
@@ -36,5 +36,5 @@ Cargo.* @durch @futurechimp @jstuczyn @neacsu

 # Explorer and wallet should probably get looked by the product team
 /explorer/ @nymtech/product 
-/nym-wallet/ @nymtech/product 
+/tauri-wallet/ @nymtech/product 
 /wallet-web/ @nymtech/product
@@ -1,102 +0,0 @@
-name: Continuous integration
-
-on:
-  push:
-    paths-ignore:
-      - 'explorer/**'
-  pull_request:
-    paths-ignore:
-      - 'explorer/**'
-
-jobs:
-  matrix_prep:
-    runs-on: ubuntu-latest
-    outputs:
-      matrix: ${{ steps.set-matrix.outputs.matrix }}
-    steps:
-      # creates the matrix strategy from build_matrix_includes.json
-      - uses: actions/checkout@v2
-      - id: set-matrix
-        uses: JoshuaTheMiller/conditional-build-matrix@main
-        with:
-          inputFile: '.github/workflows/build_matrix_includes.json'
-          filter: '[?runOnEvent==`${{ github.event_name }}` || runOnEvent==`always`]'
-  build:
-    needs: matrix_prep
-    strategy:
-      matrix: ${{fromJson(needs.matrix_prep.outputs.matrix)}}
-    runs-on: ${{ matrix.os }}
-    continue-on-error: ${{ matrix.rust == 'nightly' || matrix.rust == 'beta' || matrix.os == 'windows-latest' }}
-    steps:
-      - name: Install Dependencies (Linux)
-        run: sudo apt-get update && sudo apt-get install libwebkit2gtk-4.0-dev build-essential curl wget libssl-dev libgtk-3-dev squashfs-tools
-        if: matrix.os == 'ubuntu-latest'
-
-      - name: Check out repository code
-        uses: actions/checkout@v2
-
-      - name: Install rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: ${{ matrix.rust }}
-          override: true
-          components: rustfmt, clippy
-
-      - name: Build all binaries
-        uses: actions-rs/cargo@v1
-        with:
-          command: build
-          args: --all
-
-      - name: Run all tests
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --all
-
-      - name: Check formatting
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check
-
-      - uses: actions-rs/clippy-check@v1
-        name: Clippy checks
-#        if: matrix.os == 'ubuntu-latest' && matrix.rust == 'stable'
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          args: --all-features
-
-      - name: Run clippy
-        uses: actions-rs/cargo@v1
-        if: ${{ matrix.rust != 'nightly' }}
-        with:
-          command: clippy
-          args: -- -D warnings
-
-#        COCONUT stuff
-      - name: Reclaim some disk space (because Windows is being annoying)
-        uses: actions-rs/cargo@v1
-        if: ${{ matrix.os == 'windows-latest' }}
-        with:
-          command: clean
-
-      - name: Build all binaries with coconut enabled
-        uses: actions-rs/cargo@v1
-        with:
-          command: build
-          args: --all --features=coconut
-
-      - name: Run all tests with coconut enabled
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --all --features=coconut
-
-      - name: Run clippy with coconut enabled
-        uses: actions-rs/cargo@v1
-        if: ${{ matrix.rust != 'nightly' }}
-        with:
-          command: clippy
-          args: --features=coconut -- -D warnings
@@ -1,50 +0,0 @@
-[
-  {
-    "os":"ubuntu-latest",
-    "rust":"stable",
-    "runOnEvent":"always"
-  },
-
-  {
-    "os":"windows-latest",
-    "rust":"stable",
-    "runOnEvent":"pull_request"
-  },
-  {
-    "os":"macos-latest",
-    "rust":"stable",
-    "runOnEvent":"pull_request"
-  },
-
-  {
-    "os":"ubuntu-latest",
-    "rust":"beta",
-    "runOnEvent":"pull_request"
-  },
-  {
-    "os":"windows-latest",
-    "rust":"beta",
-    "runOnEvent":"pull_request"
-  },
-  {
-    "os":"macos-latest",
-    "rust":"beta",
-    "runOnEvent":"pull_request"
-  },
-
-  {
-    "os":"ubuntu-latest",
-    "rust":"nightly",
-    "runOnEvent":"pull_request"
-  },
-  {
-    "os":"windows-latest",
-    "rust":"nightly",
-    "runOnEvent":"pull_request"
-  },
-  {
-    "os":"macos-latest",
-    "rust":"nightly",
-    "runOnEvent":"pull_request"
-  }
-]
@@ -1,14 +0,0 @@
-[
-  {
-    "rust":"stable",
-    "runOnEvent":"always"
-  },
-  {
-    "rust":"beta",
-    "runOnEvent":"pull_request"
-  },
-  {
-    "rust":"nightly",
-    "runOnEvent":"pull_request"
-  }
-]
@@ -1,64 +0,0 @@
-name: Contracts
-
-on:
-  push:
-    paths-ignore:
-      - 'explorer/**'
-  pull_request:
-    paths-ignore:
-      - 'explorer/**'
-
-jobs:
-  matrix_prep:
-    runs-on: ubuntu-latest
-    outputs:
-      matrix: ${{ steps.set-matrix.outputs.matrix }}
-    steps:
-      # creates the matrix strategy from build_matrix_includes.json
-      - uses: actions/checkout@v2
-      - id: set-matrix
-        uses: JoshuaTheMiller/conditional-build-matrix@main
-        with:
-          inputFile: '.github/workflows/contract_matrix_includes.json'
-          filter: '[?runOnEvent==`${{ github.event_name }}` || runOnEvent==`always`]'
-  contracts:
-    # since it's going to be compiled into wasm, there's absolutely
-    # no point in running CI on different OS-es
-    runs-on: ubuntu-latest
-    continue-on-error: ${{ matrix.rust == 'nightly' }}
-    needs: matrix_prep
-    strategy:
-      matrix: ${{fromJson(needs.matrix_prep.outputs.matrix)}}
-    steps:
-      - uses: actions/checkout@v2
-
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: ${{ matrix.rust }}
-          target: wasm32-unknown-unknown
-          override: true
-          components: rustfmt, clippy
-
-      - uses: actions-rs/cargo@v1
-        env:
-          RUSTFLAGS: '-C link-arg=-s'
-        with:
-          command: build
-          args: --manifest-path contracts/Cargo.toml --all --target wasm32-unknown-unknown
-
-      - uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path contracts/Cargo.toml
-
-      - uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --manifest-path contracts/Cargo.toml --all -- --check
-
-      - uses: actions-rs/cargo@v1
-        if: ${{ matrix.rust != 'nightly' }}
-        with:
-          command: clippy
-          args: --manifest-path contracts/Cargo.toml --all -- -D warnings
@@ -1,23 +0,0 @@
-name: Linting for Network Explorer (eslint/prettier)
-
-on:
-  pull_request:
-    paths:
-      - 'explorer/**'
-
-defaults:
-  run:
-    working-directory: explorer
-
-jobs:
-  build:
-    runs-on: custom-runner-linux
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
-        with:
-          node-version: '14'
-      - run: npm install
-      - name: Run ESLint
-        # GitHub should automatically annotate the PR
-        run: npm run lint
@@ -1,59 +0,0 @@
-name: CI for Network Explorer
-
-on:
-  push:
-    paths:
-      - 'explorer/**'
-
-defaults:
-  run:
-    working-directory: explorer
-
-jobs:
-  build:
-    runs-on: custom-runner-linux
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install rsync
-      run: sudo apt-get install rsync
-    - uses: rlespinasse/github-slug-action@v3.x
-    - uses: actions/setup-node@v2
-      with:
-        node-version: '14'
-    - run: npm install
-      continue-on-error: true
-    - name: Set environment from the example
-      run: cp .env.prod .env
-    - run: npm run test
-      continue-on-error: true
-    - run: npm run build
-      continue-on-error: true
-    - name: Deploy branch to CI www
-      continue-on-error: true
-      uses: easingthemes/ssh-deploy@main
-      env:
-        SSH_PRIVATE_KEY: ${{ secrets.CI_WWW_SSH_PRIVATE_KEY }}
-        ARGS: "-rltgoDzvO --delete"
-        SOURCE: "explorer/dist/"
-        REMOTE_HOST: ${{ secrets.CI_WWW_REMOTE_HOST }}
-        REMOTE_USER: ${{ secrets.CI_WWW_REMOTE_USER }}
-        TARGET: ${{ secrets.CI_WWW_REMOTE_TARGET }}/network-explorer-${{ env.GITHUB_REF_SLUG }}
-        EXCLUDE: "/dist/, /node_modules/"
-    - name: Keybase - Node Install
-      run: npm install
-      working-directory: .github/workflows/support-files/messages
-    - name: Keybase - Send Notification
-      env:
-        NYM_PROJECT_NAME: "Network Explorer"
-        NYM_CI_WWW_BASE: "${{ secrets.NYM_CI_WWW_BASE }}"
-        NYM_CI_WWW_LOCATION: "network-explorer-${{ env.GITHUB_REF_SLUG }}"
-        GIT_COMMIT_MESSAGE: "${{ github.event.head_commit.message }}"
-        GIT_BRANCH: "${GITHUB_REF##*/}"
-        KEYBASE_NYMBOT_USERNAME: "${{ secrets.KEYBASE_NYMBOT_USERNAME }}"
-        KEYBASE_NYMBOT_PAPERKEY: "${{ secrets.KEYBASE_NYMBOT_PAPERKEY }}"
-        KEYBASE_NYMBOT_TEAM: "${{ secrets.KEYBASE_NYMBOT_TEAM }}"
-        KEYBASE_NYM_CHANNEL: "ci-network-explorer"
-        IS_SUCCESS: "${{ job.status == 'success' }}"
-      uses: docker://keybaseio/client:stable-node
-      with:
-        args: .github/workflows/support-files/messages/entry_point_notifications.sh
@@ -1,12 +0,0 @@
-name: Publish Nym Wallet
-on:
-  push:
-    tags:
-      - nym-wallet-*
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Run a one-line script
-        run: echo Hello, world!
@@ -1,29 +0,0 @@
-name: Generate TS types
-
-on:
-  push:
-    paths-ignore:
-      - "explorer/**"
-  pull_request:
-    paths-ignore:
-      - "explorer/**"
-
-jobs:
-  nym-wallet-types:
-    runs-on: ubuntu-latest
-    if: ${{ github.event_name != 'pull_request' }}
-    steps:
-      - name: Prepare
-        run: sudo apt-get update && sudo apt-get install -y libpango1.0-dev libatk1.0-dev libgdk-pixbuf2.0-dev libsoup2.4-dev librust-gdk-dev libwebkit2gtk-4.0-dev
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-      - name: Generate TS
-        run: cd nym-wallet/src-tauri && cargo test
-      - uses: EndBug/add-and-commit@v7.2.1 # https://github.com/marketplace/actions/add-commit
-        with:
-          add: '["nym-wallet"]'
-          message: "[ci skip] Generate TS types"
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -1,77 +0,0 @@
-name: Webdriverio tests for nym wallet
-
-on:
-  push:
-    paths:
-      - "nym-wallet/**"
-
-defaults:
-  run:
-    working-directory: nym-wallet
-
-jobs:
-  test:
-    name: wallet tests
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Tauri dependencies
-        run: >
-          sudo apt-get update &&
-          sudo apt-get install -y
-          libgtk-3-dev
-          libgtksourceview-3.0-dev
-          webkit2gtk-4.0
-          libappindicator3-dev
-          webkit2gtk-driver
-          xvfb
-
-      - name: Install minimal stable
-        uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-
-      - name: Node v16
-        uses: actions/setup-node@v1
-        with:
-          node-version: 16.x
-
-      - name: Install yarn for building application
-        run: yarn install
-
-      - name: Build application
-        run: yarn run webpack:build & yarn run tauri:build
-
-      - name: Check binary exists
-        run: |
-          cd target/release/
-          (test -f nym-wallet && echo nym binary exists) || echo wallet does not exist
-
-      - name: Install dependencies
-        run: yarn install
-        working-directory: nym-wallet/webdriver
-
-      - name: Remove existing user datafile
-        uses: JesseTG/rm@v1.0.2
-        with:
-          path: nym-wallet/webdriver/common/data/user-data.json
-
-      - name: Create user data json file
-        id: create-json
-        uses: jsdaniell/create-json@1.1.2
-        with:
-          name: "user-data.json"
-          json: ${{ secrets.WALLET_USERDATA }}
-          dir: "nym-wallet/webdriver/common/data/"
-
-      - name: Install tauri-driver
-        uses: actions-rs/cargo@v1
-        with:
-          command: install
-          args: tauri-driver
-
-      - name: Launch tests
-        run: xvfb-run yarn test:runall
-        working-directory: nym-wallet/webdriver
@@ -0,0 +1,136 @@
+name: Publish Nym Wallet
+on:
+  push:
+    tags:
+      - tauri-wallet-*
+    branches:
+      - feature/gh-action-build-tauri-wallet
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        working-directory: tauri-wallet
+    strategy:
+      matrix:
+        os: [ubuntu-20.04, macos-10.15, macos-11, windows-latest]
+    outputs:
+      PACKAGE_VERSION: ${{ steps.package-node-version.outputs.version }}
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Tauri dependencies
+        if: ${{ startsWith(matrix.os, 'ubuntu') }}
+        run: >
+          sudo apt-get update &&
+          sudo apt-get install -y
+          libgtk-3-dev
+          libgtksourceview-3.0-dev
+          webkit2gtk-4.0
+          libappindicator3-dev
+          webkit2gtk-driver
+          xvfb
+
+      - name: Install minimal stable
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+
+      - name: Node v16
+        uses: actions/setup-node@v1
+        with:
+          node-version: 16.x
+
+      - name: Read node from package.json
+        uses: culshaw/read-package-node-version-actions@v1
+        with:
+          path: "${{github.workspace}}/tauri-wallet"
+        id: package-node-version
+
+      - name: Install yarn for building application
+        run: yarn install
+
+      - name: Build application (bundle)
+        run: yarn run webpack:build
+
+      - name: Build application (tauri)
+        run: yarn run tauri:build
+
+#      - name: Fake build
+#        run: |
+#          mkdir release-assets
+#          cp package.json release-assets/${{ matrix.os }}-${{ steps.package-node-version.outputs.version }}.zip
+
+      - name: Compress (MacOS / Linux)
+        if: ${{ matrix.os != 'windows-latest' }}
+        working-directory: tauri-wallet
+        env:
+          TARGET_FILE: ${{ matrix.os }}_v${{ steps.package-node-version.outputs.version }}.tar.gz
+        run: |
+          mkdir release-assets
+          pushd target/release/bundle
+          tar -cvzf ../../../release-assets/$TARGET_FILE .
+
+      - name: Compress (Windows)
+        if: ${{ matrix.os == 'windows-latest' }}
+        uses: thedoctor0/zip-release@master
+        with:
+          type: 'zip'
+          filename: '${{github.workspace}}/tauri-wallet/release-assets/${{ runner.os }}_v${{ steps.package-node-version.outputs.version }}.zip'
+          path: "${{github.workspace}}/tauri-wallet/target/release/bundle"
+
+      - name: Upload release assets
+        uses: actions/upload-artifact@v2
+        with:
+          name: release-assets-${{ matrix.os }}
+          path: "${{github.workspace}}/tauri-wallet/release-assets/*"
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+    env:
+      PACKAGE_VERSION: ${{ needs.build.outputs.PACKAGE_VERSION }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Download assets
+        uses: actions/download-artifact@v2
+        with:
+          path: download-assets
+      - name: Display downloaded assets
+        run: ls -R download-assets
+      - name: Re-arrange downloaded assets
+        run: |
+          mkdir release-assets
+          find download-assets -mindepth 2 -type f -exec mv -t ${{github.workspace}}/release-assets -i '{}' +
+          rm -rf download-assets
+      - name: Hash files
+        id: file_hashes
+        # Put the multi-line string in an env var and create a new action env var by wrapping the multiline value
+        run: |
+          cd release-assets
+          ASSET_HASHES=$(find . -type f -exec sha256sum {} \;)
+          echo "ASSET_HASHES<<EOF" >> $GITHUB_ENV
+          echo "$ASSET_HASHES" >> $GITHUB_ENV
+          echo "EOF" >> $GITHUB_ENV
+      - name: Display file hashes
+        run: echo $ASSET_HASHES
+      - uses: ncipollo/release-action@v1
+        with:
+          # The pipe syntax needs to stay to escape the wildcard correctly
+          artifacts: |
+            release-assets/*
+          token: ${{ secrets.GITHUB_TOKEN }}
+          tag: "nym-wallet-v${{env.PACKAGE_VERSION}}"
+          commit: feature/gh-action-build-tauri-wallet
+          draft: true
+          name: "Nym Wallet v${{ env.PACKAGE_VERSION }}"
+          body: |
+            This is a build of the Nym Wallet from commit `${{ github.sha }}` [(browse commit)](https://github.com/nymtech/nym/tree/${{ github.sha }}).
+
+            Installers for each operating system have the following SHA256 hashes:
+
+            ```
+            ${{ env.ASSET_HASHES }}
+            ```
@@ -1,48 +0,0 @@
-name: Wasm Client
-
-on:
-  pull_request:
-    paths-ignore:
-      - 'explorer/**'
-
-jobs:
-  wasm:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          target: wasm32-unknown-unknown
-          override: true
-          components: rustfmt, clippy
-
-# token credentials (non-coconut) don't work for wasm right now
-#      - uses: actions-rs/cargo@v1
-#        with:
-#          command: build
-#          args: --manifest-path clients/webassembly/Cargo.toml --target wasm32-unknown-unknown
-
-      - uses: actions-rs/cargo@v1
-        with:
-          command: build
-          args: --manifest-path clients/webassembly/Cargo.toml --target wasm32-unknown-unknown --features=coconut
-
-# for some reason this does not seem to work correctly, leave it for later, building is good enough for now
-#      - uses: actions-rs/cargo@v1
-#        with:
-#          command: test
-#          args: --manifest-path clients/webassembly/Cargo.toml --target wasm32-unknown-unknown
-
-      - uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --manifest-path clients/webassembly/Cargo.toml -- --check
-
-# for some reason this does not seem to work correctly, leave it for later, building is good enough for now
-#      - uses: actions-rs/cargo@v1
-#        with:
-#          command: clippy
-#          args: --manifest-path clients/webassembly/Cargo.toml --target wasm32-unknown-unknown -- -D warnings
@@ -24,15 +24,8 @@ v6-topology.json
 /explorer/downloads/topology.json
 /explorer/public/downloads/mixmining.json
 /explorer/public/downloads/topology.json
-/nym-wallet/dist/*
 /clients/validator/examples/nym-driver-example/current-contract.txt
 validator-api/v4.json
 validator-api/v6.json
 **/node_modules
 validator-api/keypair
-contracts/mixnet/code_id
-contracts/mixnet/Justfile
-contracts/mixnet/Makefile
-validator-config
-*.patch
-validator-api-config.toml
@@ -25,12 +25,10 @@ members = [
    "common/config",
    "common/credentials",
    "common/crypto",
-    "common/erc20-bridge-contract",
    "common/mixnet-contract",
    "common/mixnode-common",
    "common/network-defaults",
    "common/nonexhaustive-delayqueue",
-    "common/nymcoconut",
    "common/nymsphinx",
    "common/nymsphinx/acknowledgements",
    "common/nymsphinx/addressing",
@@ -62,7 +60,6 @@ default-members = [
    "service-providers/network-requester",
    "mixnode",
    "validator-api",
-    "explorer-api",
 ]

-exclude = ["explorer", "contracts", "tokenomics-py"]
+exclude = ["explorer", "contracts"]
@@ -1,31 +0,0 @@
-all: clippy test fmt
-clippy: clippy-main clippy-contracts clippy-wallet
-test: test-main test-contracts test-wallet
-fmt: fmt-main fmt-contracts fmt-wallet
-
-clippy-main:
-	cargo clippy
-
-clippy-contracts:
-	cargo clippy --manifest-path contracts/Cargo.toml
-
-clippy-wallet: 
-	cargo clippy --manifest-path nym-wallet/Cargo.toml
-
-test-main:
-	cargo test
-
-test-contracts:
-	cargo test --manifest-path contracts/Cargo.toml
-
-test-wallet:
-	cargo test --manifest-path nym-wallet/Cargo.toml
-
-fmt-main:
-	cargo fmt --all
-
-fmt-contracts:
-	cargo fmt --manifest-path contracts/Cargo.toml --all
-
-fmt-wallet:
-	cargo fmt --manifest-path nym-wallet/Cargo.toml --all
@@ -5,6 +5,8 @@ SPDX-License-Identifier: Apache-2.0

 ## The Nym Privacy Platform

+This repository contains the Nym mixnet.
+
 The platform is composed of multiple Rust crates. Top-level executable binary crates include:

 * nym-mixnode - shuffles [Sphinx](https://github.com/nymtech/sphinx) packets together to provide privacy against network-level attackers.
@@ -13,7 +15,7 @@ The platform is composed of multiple Rust crates. Top-level executable binary cr
 * nym-gateway - acts sort of like a mailbox for mixnet messages, removing the need for directly delivery to potentially offline or firewalled devices.
 * nym-network-monitor - sends packets through the full system to check that they are working as expected, and stores node uptime histories as the basis of a rewards system ("mixmining" or "proof-of-mixing").
 * nym-explorer - a (projected) block explorer and (existing) mixnet viewer.
-* nym-wallet - a desktop wallet implemented using the [Tauri](https://tauri.studio/en/docs/about/intro) framework. 
+* nym-wallet (currently in development)- a desktop wallet implemented using the [Tauri](https://tauri.studio/en/docs/about/intro) framework. 

 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg?style=for-the-badge)](https://opensource.org/licenses/Apache-2.0)
 [![Build Status](https://img.shields.io/github/workflow/status/nymtech/nym/Continuous%20integration/develop?style=for-the-badge&logo=github-actions)](https://github.com/nymtech/nym/actions?query=branch%3Adevelop)
@@ -31,45 +33,6 @@ There's a `.env.sample-dev` file provided which you can rename to `.env` if you

 You can chat to us in [Keybase](https://keybase.io). Download their chat app, then click **Teams -> Join a team**. Type **nymtech.friends** into the team name and hit **continue**. For general chat, hang out in the **#general** channel. Our development takes places in the **#dev** channel. Node operators should be in the **#node-operators** channel.

-### Rewards
-
-Node, node operator and delegator rewards are determined according to the principles laid out in the section 6 of [Nym Whitepaper](https://nymtech.net/nym-whitepaper.pdf). Below is a TLDR of the variables and formulas involved in calculating the epoch rewards. Initial reward pool is set to 250 million Nym, making the circulating supply 750 million Nym.
-
-|Symbol|Definition|
-|---|---|
-|<img src="https://render.githubusercontent.com/render/math?math=R">|global share of rewards available, starts at 2% of the reward pool. 
-|<img src="https://render.githubusercontent.com/render/math?math=R_{i}">|node reward for mixnode `i`.
-|<img src="https://render.githubusercontent.com/render/math?math=\sigma_{i}">|ratio of total node stake (node bond + all delegations) to the token circulating supply.
-|<img src="https://render.githubusercontent.com/render/math?math=\lambda_{i}">|ratio of stake operator has plaged to their node to the token circulating supply.
-|<img src="https://render.githubusercontent.com/render/math?math=\omega_{i}">|fraction of total effort undertaken by node `i`, set to `1/k` in testnet Milhon.
-|<img src="https://render.githubusercontent.com/render/math?math=k">|number of nodes stakeholders are incentivised to create, set by the validators, a matter of governance. Currently determined by the `active set` size, and set to 5000 in testnet Milhon.
-|<img src="https://render.githubusercontent.com/render/math?math=\alpha">|Sybil attack resistance parameter - the higher this parameter is set the stronger the reduction in competitivness gets for a Sybil attacker.
-|<img src="https://render.githubusercontent.com/render/math?math=PM_{i}">|declared profit margin of operator `i`, defaults to 10% in testnet Milhon.
-|<img src="https://render.githubusercontent.com/render/math?math=PF_{i}">|uptime of node `i`, scaled to 0 - 1, for the rewarding epoch
-|<img src="https://render.githubusercontent.com/render/math?math=PP_{i}">|cost of operating node `i` for the duration of the rewarding eopoch, set to 40 Nym for testnet Milhon.
-
-Node reward for node `i` is determined as:
-
-<img src="https://render.githubusercontent.com/render/math?math=R_{i}=PF_{i} \cdot R \cdot (\sigma^'_{i} \cdot \omega_{i} \cdot k %2b \alpha \cdot \lambda^'_{i} \cdot \sigma^'_{i} \cdot k)/(1 %2b \alpha)">
-
-where:
-
-<img src="https://render.githubusercontent.com/render/math?math=\sigma^'_{i} = min\{\sigma_{i}, 1/k\}">
-
-and
-
-<img src="https://render.githubusercontent.com/render/math?math=\lambda^'_{i} = min\{\lambda_{i}, 1/k\}">
-
-Operator of node `i` is credited with the following amount:
-
-<img src="https://render.githubusercontent.com/render/math?math=min\{PP_{i},R_{i})\} %2b max\{0, (PM_{i} %2b (1 - PM_{i}) \cdot \lambda_{i}/\delta_{i}) \cdot (R_{i} - PP_{i})\}">
-
-Delegate with stake `s` recieves:
-
-<img src="https://render.githubusercontent.com/render/math?math=max\{0, (1-PM_{i}) \cdot (s^'/\sigma_{i}) \cdot (R_{i} - PP_{i})\}">
-
-where `s'` is stake `s` scaled over total token circulating supply.
-
 ### Licensing and copyright information

 This program is available as open source under the terms of the Apache 2.0 license. However, some elements are being licensed under CC0-1.0 and MIT. For accurate information, please check individual files.
@@ -30,6 +30,3 @@ validator-client = { path = "../../common/client-libs/validator-client" }

 [dev-dependencies]
 tempfile = "3.1.0"
-
-[features]
-coconut = []
@@ -22,10 +22,7 @@ const DEFAULT_MESSAGE_STREAM_AVERAGE_DELAY: Duration = Duration::from_millis(20)
 const DEFAULT_AVERAGE_PACKET_DELAY: Duration = Duration::from_millis(50);
 const DEFAULT_TOPOLOGY_REFRESH_RATE: Duration = Duration::from_secs(5 * 60); // every 5min
 const DEFAULT_TOPOLOGY_RESOLUTION_TIMEOUT: Duration = Duration::from_millis(5_000);
-// Set this to a high value for now, so that we don't risk sporadic timeouts that might cause
-// bought bandwidth tokens to not have time to be spent; Once we remove the gateway from the
-// bandwidth bridging protocol, we can come back to a smaller timeout value
-const DEFAULT_GATEWAY_RESPONSE_TIMEOUT: Duration = Duration::from_secs(5 * 60);
+const DEFAULT_GATEWAY_RESPONSE_TIMEOUT: Duration = Duration::from_millis(1_500);

 pub fn missing_string_value() -> String {
    MISSING_VALUE.to_string()
@@ -103,17 +100,6 @@ impl<T: NymConfig> Config<T> {
                self::Client::<T>::default_reply_encryption_key_store_path(&id);
        }

-        #[cfg(not(feature = "coconut"))]
-        if self
-            .client
-            .backup_bandwidth_token_keys_dir
-            .as_os_str()
-            .is_empty()
-        {
-            self.client.backup_bandwidth_token_keys_dir =
-                self::Client::<T>::default_backup_bandwidth_token_keys_dir(&id);
-        }
-
        self.client.id = id;
    }

@@ -125,16 +111,6 @@ impl<T: NymConfig> Config<T> {
        self.client.gateway_listener = gateway_listener.into();
    }

-    #[cfg(not(feature = "coconut"))]
-    pub fn with_eth_private_key<S: Into<String>>(&mut self, eth_private_key: S) {
-        self.client.eth_private_key = eth_private_key.into();
-    }
-
-    #[cfg(not(feature = "coconut"))]
-    pub fn with_eth_endpoint<S: Into<String>>(&mut self, eth_endpoint: S) {
-        self.client.eth_endpoint = eth_endpoint.into();
-    }
-
    pub fn set_custom_validator_apis(&mut self, validator_api_urls: Vec<Url>) {
        self.client.validator_api_urls = validator_api_urls;
    }
@@ -197,21 +173,6 @@ impl<T: NymConfig> Config<T> {
        self.client.gateway_listener.clone()
    }

-    #[cfg(not(feature = "coconut"))]
-    pub fn get_backup_bandwidth_token_keys_dir(&self) -> PathBuf {
-        self.client.backup_bandwidth_token_keys_dir.clone()
-    }
-
-    #[cfg(not(feature = "coconut"))]
-    pub fn get_eth_endpoint(&self) -> String {
-        self.client.eth_endpoint.clone()
-    }
-
-    #[cfg(not(feature = "coconut"))]
-    pub fn get_eth_private_key(&self) -> String {
-        self.client.eth_private_key.clone()
-    }
-
    // Debug getters
    pub fn get_average_packet_delay(&self) -> Duration {
        self.debug.average_packet_delay
@@ -307,20 +268,6 @@ pub struct Client<T> {
    /// Address of the gateway listener to which all client requests should be sent.
    gateway_listener: String,

-    /// Path to directory containing public/private keys used for bandwidth token purchase.
-    /// Those are saved in case of emergency, to be able to reclaim bandwidth tokens.
-    /// The public key is the name of the file, while the private key is the content.
-    #[cfg(not(feature = "coconut"))]
-    backup_bandwidth_token_keys_dir: PathBuf,
-
-    /// Ethereum private key.
-    #[cfg(not(feature = "coconut"))]
-    eth_private_key: String,
-
-    /// Address to an Ethereum full node.
-    #[cfg(not(feature = "coconut"))]
-    eth_endpoint: String,
-
    /// nym_home_directory specifies absolute path to the home nym Clients directory.
    /// It is expected to use default value and hence .toml file should not redefine this field.
    nym_root_directory: PathBuf,
@@ -345,12 +292,6 @@ impl<T: NymConfig> Default for Client<T> {
            reply_encryption_key_store_path: Default::default(),
            gateway_id: "".to_string(),
            gateway_listener: "".to_string(),
-            #[cfg(not(feature = "coconut"))]
-            backup_bandwidth_token_keys_dir: Default::default(),
-            #[cfg(not(feature = "coconut"))]
-            eth_private_key: "".to_string(),
-            #[cfg(not(feature = "coconut"))]
-            eth_endpoint: "".to_string(),
            nym_root_directory: T::default_root_directory(),
            super_struct: Default::default(),
        }
@@ -385,11 +326,6 @@ impl<T: NymConfig> Client<T> {
    fn default_reply_encryption_key_store_path(id: &str) -> PathBuf {
        T::default_data_directory(Some(id)).join("reply_key_store")
    }
-
-    #[cfg(not(feature = "coconut"))]
-    fn default_backup_bandwidth_token_keys_dir(id: &str) -> PathBuf {
-        T::default_data_directory(Some(id)).join("backup_bandwidth_token_keys")
-    }
 }

 #[derive(Debug, Default, Deserialize, PartialEq, Serialize)]
@@ -24,7 +24,7 @@ dirs = "3.0" # for determining default store directories in config
 dotenv = "0.15.0" # for obtaining environmental variables (only used for RUST_LOG for time being)
 log = "0.4" # self explanatory
 pretty_env_logger = "0.4" # for formatting log messages
-rand = { version = "0.7.3", features = ["wasm-bindgen"] } # rng-related traits + some rng implementation to use
+rand = {version = "0.7.3", features = ["wasm-bindgen"]} # rng-related traits + some rng implementation to use
 serde = { version = "1.0.104", features = ["derive"] } # for config serialization/deserialization
 sled = "0.34" # for storage of replySURB decryption keys
 tokio = { version = "1.4", features = ["rt-multi-thread", "net", "signal"] } # async runtime
@@ -44,13 +44,9 @@ topology = { path = "../../common/topology" }
 websocket-requests = { path = "websocket-requests" }
 validator-client = { path = "../../common/client-libs/validator-client" }
 version-checker = { path = "../../common/version-checker" }
-network-defaults = { path = "../../common/network-defaults" }

 [features]
 coconut = ["coconut-interface", "credentials", "gateway-requests/coconut", "gateway-client/coconut"]

 [dev-dependencies]
 serde_json = "1.0" # for the "textsend" example
-
-[build-dependencies]
-vergen = { version = "5", default-features = false, features = ["build", "git", "rustc", "cargo"] }
@@ -1,8 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-use vergen::{vergen, Config};
-
-fn main() {
-    vergen(Config::default()).expect("failed to extract build metadata")
-}
@@ -3,5 +3,6 @@ module github.com/nymtech/nym/clients/native/examples/go
 go 1.14

 require (
+	github.com/btcsuite/btcutil v1.0.2 // indirect
 	github.com/gorilla/websocket v1.4.2
 )
@@ -42,17 +42,6 @@ public_encryption_key_file = '{{ client.public_encryption_key_file }}'
 # sent but not received back.
 reply_encryption_key_store_path = '{{ client.reply_encryption_key_store_path }}'

-# Path to directory containing public/private keys used for bandwidth token purchase.
-# Those are saved in case of emergency, to be able to reclaim bandwidth tokens.
-# The public key is the name of the file, while the private key is the content.
-backup_bandwidth_token_keys_dir = '{{ client.backup_bandwidth_token_keys_dir }}'
-
-# Ethereum private key.
-eth_private_key = '{{ client.eth_private_key }}'
-
-# Addess to an Ethereum full node.
-eth_endpoint = '{{ client.eth_endpoint }}'
-
 ##### additional client config options #####

 # ID of the gateway from which the client should be fetching messages.
@@ -1,6 +1,8 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use crate::client::config::{Config, SocketType};
+use crate::websocket;
 use client_core::client::cover_traffic_stream::LoopCoverTrafficStream;
 use client_core::client::inbound_messages::{
    InputMessage, InputMessageReceiver, InputMessageSender,
@@ -22,7 +24,6 @@ use client_core::client::topology_control::{
 use client_core::config::persistence::key_pathfinder::ClientKeyPathfinder;
 use crypto::asymmetric::identity;
 use futures::channel::mpsc;
-use gateway_client::bandwidth::BandwidthController;
 use gateway_client::{
    AcknowledgementReceiver, AcknowledgementSender, GatewayClient, MixnetMessageReceiver,
    MixnetMessageSender,
@@ -34,8 +35,10 @@ use nymsphinx::anonymous_replies::ReplySurb;
 use nymsphinx::receiver::ReconstructedMessage;
 use tokio::runtime::Runtime;

-use crate::client::config::{Config, SocketType};
-use crate::websocket;
+#[cfg(feature = "coconut")]
+use coconut_interface::Credential;
+#[cfg(feature = "coconut")]
+use credentials::{bandwidth::prepare_for_spending, obtain_aggregate_verification_key};

 pub(crate) mod config;

@@ -165,6 +168,31 @@ impl NymClient {
        .start(self.runtime.handle())
    }

+    #[cfg(feature = "coconut")]
+    async fn prepare_coconut_credential(&self) -> Credential {
+        let verification_key = obtain_aggregate_verification_key(
+            &self.config.get_base().get_validator_api_endpoints(),
+        )
+        .await
+        .expect("could not obtain aggregate verification key of validators");
+
+        let bandwidth_credential = credentials::bandwidth::obtain_signature(
+            &self.key_manager.identity_keypair().public_key().to_bytes(),
+            &self.config.get_base().get_validator_api_endpoints(),
+        )
+        .await
+        .expect("could not obtain bandwidth credential");
+        // the above would presumably be loaded from a file
+
+        // the below would only be executed once we know where we want to spend it (i.e. which gateway and stuff)
+        prepare_for_spending(
+            &self.key_manager.identity_keypair().public_key().to_bytes(),
+            &bandwidth_credential,
+            &verification_key,
+        )
+        .expect("could not prepare out bandwidth credential for spending")
+    }
+
    fn start_gateway_client(
        &mut self,
        mixnet_message_sender: MixnetMessageSender,
@@ -184,17 +212,7 @@ impl NymClient {

        self.runtime.block_on(async {
            #[cfg(feature = "coconut")]
-            let bandwidth_controller = BandwidthController::new(
-                self.config.get_base().get_validator_api_endpoints(),
-                *self.key_manager.identity_keypair().public_key(),
-            );
-            #[cfg(not(feature = "coconut"))]
-            let bandwidth_controller = BandwidthController::new(
-                self.config.get_base().get_eth_endpoint(),
-                self.config.get_base().get_eth_private_key(),
-                self.config.get_base().get_backup_bandwidth_token_keys_dir(),
-            )
-            .expect("Could not create bandwidth controller");
+            let coconut_credential = self.prepare_coconut_credential().await;

            let mut gateway_client = GatewayClient::new(
                gateway_address,
@@ -204,11 +222,13 @@ impl NymClient {
                mixnet_message_sender,
                ack_sender,
                self.config.get_base().get_gateway_response_timeout(),
-                Some(bandwidth_controller),
            );

            gateway_client
-                .authenticate_and_start()
+                .authenticate_and_start(
+                    #[cfg(feature = "coconut")]
+                    Some(coconut_credential),
+                )
                .await
                .expect("could not authenticate and start up the gateway connection");

@@ -1,23 +1,15 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use crate::client::config::Config;
+use crate::commands::override_config;
 use clap::{App, Arg, ArgMatches};
 use client_core::client::key_manager::KeyManager;
 use client_core::config::persistence::key_pathfinder::ClientKeyPathfinder;
-#[cfg(feature = "coconut")]
-use coconut_interface::{hash_to_scalar, Credential, Parameters};
 use config::NymConfig;
-#[cfg(feature = "coconut")]
-use credentials::coconut::bandwidth::{
-    obtain_signature, prepare_for_spending, BandwidthVoucherAttributes, TOTAL_ATTRIBUTES,
-};
-#[cfg(feature = "coconut")]
-use credentials::obtain_aggregate_verification_key;
 use crypto::asymmetric::{encryption, identity};
 use gateway_client::GatewayClient;
 use gateway_requests::registration::handshake::SharedKeys;
-#[cfg(feature = "coconut")]
-use network_defaults::BANDWIDTH_VALUE;
 use nymsphinx::addressing::clients::Recipient;
 use nymsphinx::addressing::nodes::NodeIdentity;
 use rand::rngs::OsRng;
@@ -29,11 +21,8 @@ use std::time::Duration;
 use topology::{filter::VersionFilterable, gateway};
 use url::Url;

-use crate::client::config::Config;
-use crate::commands::override_config;
-
 pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
-    let app = App::new("init")
+    App::new("init")
        .about("Initialise a Nym client. Do this first!")
        .arg(Arg::with_name("id")
            .long("id")
@@ -47,9 +36,9 @@ pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
            .takes_value(true)
        )
        .arg(Arg::with_name("validators")
-                 .long("validators")
-                 .help("Comma separated list of rest endpoints of the validators")
-                 .takes_value(true),
+                .long("validators")
+                .help("Comma separated list of rest endpoints of the validators")
+                .takes_value(true),
        )
        .arg(Arg::with_name("disable-socket")
            .long("disable-socket")
@@ -65,51 +54,7 @@ pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
            .long("fastmode")
            .hidden(true) // this will prevent this flag from being displayed in `--help`
            .help("Mostly debug-related option to increase default traffic rate so that you would not need to modify config post init")
-        );
-    #[cfg(not(feature = "coconut"))]
-        let app = app
-        .arg(Arg::with_name("eth_endpoint")
-            .long("eth_endpoint")
-            .help("URL of an Ethereum full node that we want to use for getting bandwidth tokens from ERC20 tokens")
-            .takes_value(true)
-            .required(true))
-        .arg(Arg::with_name("eth_private_key")
-            .long("eth_private_key")
-            .help("Ethereum private key used for obtaining bandwidth tokens from ERC20 tokens")
-            .takes_value(true)
-            .required(true));
-
-    app
-}
-
-// this behaviour should definitely be changed, we shouldn't
-// need to get bandwidth credential for registration
-#[cfg(feature = "coconut")]
-async fn _prepare_temporary_credential(validators: &[Url], raw_identity: &[u8]) -> Credential {
-    let verification_key = obtain_aggregate_verification_key(validators)
-        .await
-        .expect("could not obtain aggregate verification key of validators");
-
-    let params = Parameters::new(TOTAL_ATTRIBUTES).unwrap();
-    let bandwidth_credential_attributes = BandwidthVoucherAttributes {
-        serial_number: params.random_scalar(),
-        binding_number: params.random_scalar(),
-        voucher_value: hash_to_scalar(BANDWIDTH_VALUE.to_be_bytes()),
-        voucher_info: hash_to_scalar(String::from("BandwidthVoucher").as_bytes()),
-    };
-
-    let bandwidth_credential =
-        obtain_signature(&params, &bandwidth_credential_attributes, validators)
-            .await
-            .expect("could not obtain bandwidth credential");
-
-    prepare_for_spending(
-        raw_identity,
-        &bandwidth_credential,
-        &bandwidth_credential_attributes,
-        &verification_key,
-    )
-    .expect("could not prepare out bandwidth credential for spending")
+        )
 }

 async fn register_with_gateway(
@@ -43,14 +43,5 @@ pub(crate) fn override_config(mut config: Config, matches: &ArgMatches) -> Confi
        config = config.with_port(port.unwrap());
    }

-    #[cfg(not(feature = "coconut"))]
-    if let Some(eth_endpoint) = matches.value_of("eth_endpoint") {
-        config.get_base_mut().with_eth_endpoint(eth_endpoint);
-    }
-    #[cfg(not(feature = "coconut"))]
-    if let Some(eth_private_key) = matches.value_of("eth_private_key") {
-        config.get_base_mut().with_eth_private_key(eth_private_key);
-    }
-
    config
 }
@@ -10,7 +10,7 @@ use log::*;
 use version_checker::is_minor_version_compatible;

 pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
-    let app = App::new("run")
+    App::new("run")
        .about("Run the Nym client with provided configuration client optionally overriding set parameters")
        .arg(Arg::with_name("id")
            .long("id")
@@ -38,19 +38,7 @@ pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
            .long("port")
            .help("Port for the socket (if applicable) to listen on")
            .takes_value(true)
-        );
-    #[cfg(not(feature = "coconut"))]
-        let app = app
-        .arg(Arg::with_name("eth_endpoint")
-            .long("eth_endpoint")
-            .help("URL of an Ethereum full node that we want to use for getting bandwidth tokens from ERC20 tokens")
-            .takes_value(true))
-        .arg(Arg::with_name("eth_private_key")
-            .long("eth_private_key")
-            .help("Ethereum private key used for obtaining bandwidth tokens from ERC20 tokens")
-            .takes_value(true));
-
-    app
+        )
 }

 // this only checks compatibility between config the binary. It does not take into consideration
@@ -1,7 +1,7 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use clap::{crate_version, App, ArgMatches};
+use clap::{App, ArgMatches};

 pub mod client;
 pub mod commands;
@@ -13,8 +13,7 @@ fn main() {
    println!("{}", banner());

    let arg_matches = App::new("Nym Client")
-        .version(crate_version!())
-        .long_version(&*long_version())
+        .version(env!("CARGO_PKG_VERSION"))
        .author("Nymtech")
        .about("Implementation of the Nym Client")
        .subcommand(commands::init::command_args())
@@ -51,38 +50,7 @@ fn banner() -> String {
             (client - version {:})

    "#,
-        crate_version!()
-    )
-}
-
-fn long_version() -> String {
-    format!(
-        r#"
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-"#,
-        "Build Timestamp:",
-        env!("VERGEN_BUILD_TIMESTAMP"),
-        "Build Version:",
-        env!("VERGEN_BUILD_SEMVER"),
-        "Commit SHA:",
-        env!("VERGEN_GIT_SHA"),
-        "Commit Date:",
-        env!("VERGEN_GIT_COMMIT_TIMESTAMP"),
-        "Commit Branch:",
-        env!("VERGEN_GIT_BRANCH"),
-        "rustc Version:",
-        env!("VERGEN_RUSTC_SEMVER"),
-        "rustc Channel:",
-        env!("VERGEN_RUSTC_CHANNEL"),
-        "cargo Profile:",
-        env!("VERGEN_CARGO_PROFILE"),
+        env!("CARGO_PKG_VERSION")
    )
 }

@@ -1,8 +1,8 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-pub(crate) use handler::Handler;
-pub(crate) use listener::Listener;
-
 pub(crate) mod handler;
 pub(crate) mod listener;
+
+pub(crate) use handler::Handler;
+pub(crate) use listener::Listener;
@@ -32,17 +32,13 @@ crypto = { path = "../../common/crypto" }
 gateway-client = { path = "../../common/client-libs/gateway-client" }
 gateway-requests = { path = "../../gateway/gateway-requests" }
 nymsphinx = { path = "../../common/nymsphinx" }
-ordered-buffer = { path = "../../common/socks5/ordered-buffer" }
+ordered-buffer = {path = "../../common/socks5/ordered-buffer"}
 socks5-requests = { path = "../../common/socks5/requests" }
 topology = { path = "../../common/topology" }
 pemstore = { path = "../../common/pemstore" }
 proxy-helpers = { path = "../../common/socks5/proxy-helpers" }
 validator-client = { path = "../../common/client-libs/validator-client" }
 version-checker = { path = "../../common/version-checker" }
-network-defaults = { path = "../../common/network-defaults" }

 [features]
 coconut = ["coconut-interface", "credentials", "gateway-requests/coconut", "gateway-client/coconut"]
-
-[build-dependencies]
-vergen = { version = "5", default-features = false, features = ["build", "git", "rustc", "cargo"] }
@@ -1,8 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-use vergen::{vergen, Config};
-
-fn main() {
-    vergen(Config::default()).expect("failed to extract build metadata")
-}
@@ -42,17 +42,6 @@ public_encryption_key_file = '{{ client.public_encryption_key_file }}'
 # sent but not received back.
 reply_encryption_key_store_path = '{{ client.reply_encryption_key_store_path }}'

-# Path to directory containing public/private keys used for bandwidth token purchase.
-# Those are saved in case of emergency, to be able to reclaim bandwidth tokens.
-# The public key is the name of the file, while the private key is the content.
-backup_bandwidth_token_keys_dir = '{{ client.backup_bandwidth_token_keys_dir }}'
-
-# Ethereum private key.
-eth_private_key = '{{ client.eth_private_key }}'
-
-# Addess to an Ethereum full node.
-eth_endpoint = '{{ client.eth_endpoint }}'
-
 ##### additional client config options #####

 # ID of the gateway from which the client should be fetching messages.
@@ -1,6 +1,11 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use crate::client::config::Config;
+use crate::socks::{
+    authentication::{AuthenticationMethods, Authenticator, User},
+    server::SphinxSocksServer,
+};
 use client_core::client::cover_traffic_stream::LoopCoverTrafficStream;
 use client_core::client::inbound_messages::{
    InputMessage, InputMessageReceiver, InputMessageSender,
@@ -20,7 +25,6 @@ use client_core::client::topology_control::{
 use client_core::config::persistence::key_pathfinder::ClientKeyPathfinder;
 use crypto::asymmetric::identity;
 use futures::channel::mpsc;
-use gateway_client::bandwidth::BandwidthController;
 use gateway_client::{
    AcknowledgementReceiver, AcknowledgementSender, GatewayClient, MixnetMessageReceiver,
    MixnetMessageSender,
@@ -30,11 +34,10 @@ use nymsphinx::addressing::clients::Recipient;
 use nymsphinx::addressing::nodes::NodeIdentity;
 use tokio::runtime::Runtime;

-use crate::client::config::Config;
-use crate::socks::{
-    authentication::{AuthenticationMethods, Authenticator, User},
-    server::SphinxSocksServer,
-};
+#[cfg(feature = "coconut")]
+use coconut_interface::Credential;
+#[cfg(feature = "coconut")]
+use credentials::{bandwidth::prepare_for_spending, obtain_aggregate_verification_key};

 pub(crate) mod config;

@@ -153,6 +156,31 @@ impl NymClient {
        .start(self.runtime.handle())
    }

+    #[cfg(feature = "coconut")]
+    async fn prepare_coconut_credential(&self) -> Credential {
+        let verification_key = obtain_aggregate_verification_key(
+            &self.config.get_base().get_validator_api_endpoints(),
+        )
+        .await
+        .expect("could not obtain aggregate verification key of validators");
+
+        let bandwidth_credential = credentials::bandwidth::obtain_signature(
+            &self.key_manager.identity_keypair().public_key().to_bytes(),
+            &self.config.get_base().get_validator_api_endpoints(),
+        )
+        .await
+        .expect("could not obtain bandwidth credential");
+        // the above would presumably be loaded from a file
+
+        // the below would only be executed once we know where we want to spend it (i.e. which gateway and stuff)
+        prepare_for_spending(
+            &self.key_manager.identity_keypair().public_key().to_bytes(),
+            &bandwidth_credential,
+            &verification_key,
+        )
+        .expect("could not prepare out bandwidth credential for spending")
+    }
+
    fn start_gateway_client(
        &mut self,
        mixnet_message_sender: MixnetMessageSender,
@@ -172,17 +200,7 @@ impl NymClient {

        self.runtime.block_on(async {
            #[cfg(feature = "coconut")]
-            let bandwidth_controller = BandwidthController::new(
-                self.config.get_base().get_validator_api_endpoints(),
-                *self.key_manager.identity_keypair().public_key(),
-            );
-            #[cfg(not(feature = "coconut"))]
-            let bandwidth_controller = BandwidthController::new(
-                self.config.get_base().get_eth_endpoint(),
-                self.config.get_base().get_eth_private_key(),
-                self.config.get_base().get_backup_bandwidth_token_keys_dir(),
-            )
-            .expect("Could not create bandwidth controller");
+            let coconut_credential = self.prepare_coconut_credential().await;

            let mut gateway_client = GatewayClient::new(
                gateway_address,
@@ -192,11 +210,13 @@ impl NymClient {
                mixnet_message_sender,
                ack_sender,
                self.config.get_base().get_gateway_response_timeout(),
-                Some(bandwidth_controller),
            );

            gateway_client
-                .authenticate_and_start()
+                .authenticate_and_start(
+                    #[cfg(feature = "coconut")]
+                    Some(coconut_credential),
+                )
                .await
                .expect("could not authenticate and start up the gateway connection");

@@ -1,23 +1,15 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use crate::client::config::Config;
+use crate::commands::override_config;
 use clap::{App, Arg, ArgMatches};
 use client_core::client::key_manager::KeyManager;
 use client_core::config::persistence::key_pathfinder::ClientKeyPathfinder;
-#[cfg(feature = "coconut")]
-use coconut_interface::{hash_to_scalar, Credential, Parameters};
 use config::NymConfig;
-#[cfg(feature = "coconut")]
-use credentials::coconut::bandwidth::{
-    obtain_signature, prepare_for_spending, BandwidthVoucherAttributes, TOTAL_ATTRIBUTES,
-};
-#[cfg(feature = "coconut")]
-use credentials::obtain_aggregate_verification_key;
 use crypto::asymmetric::{encryption, identity};
 use gateway_client::GatewayClient;
 use gateway_requests::registration::handshake::SharedKeys;
-#[cfg(feature = "coconut")]
-use network_defaults::BANDWIDTH_VALUE;
 use nymsphinx::addressing::clients::Recipient;
 use nymsphinx::addressing::nodes::NodeIdentity;
 use rand::{prelude::SliceRandom, rngs::OsRng, thread_rng};
@@ -27,11 +19,8 @@ use std::time::Duration;
 use topology::{filter::VersionFilterable, gateway};
 use url::Url;

-use crate::client::config::Config;
-use crate::commands::override_config;
-
 pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
-    let app = App::new("init")
+    App::new("init")
        .about("Initialise a Nym client. Do this first!")
        .arg(Arg::with_name("id")
            .long("id")
@@ -51,9 +40,9 @@ pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
            .takes_value(true)
        )
        .arg(Arg::with_name("validators")
-                 .long("validators")
-                 .help("Comma separated list of rest endpoints of the validators")
-                 .takes_value(true),
+                .long("validators")
+                .help("Comma separated list of rest endpoints of the validators")
+                .takes_value(true),
        )
        .arg(Arg::with_name("port")
            .short("p")
@@ -65,51 +54,7 @@ pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
            .long("fastmode")
            .hidden(true) // this will prevent this flag from being displayed in `--help`
            .help("Mostly debug-related option to increase default traffic rate so that you would not need to modify config post init")
-        );
-    #[cfg(not(feature = "coconut"))]
-        let app = app
-        .arg(Arg::with_name("eth_endpoint")
-            .long("eth_endpoint")
-            .help("URL of an Ethereum full node that we want to use for getting bandwidth tokens from ERC20 tokens")
-            .takes_value(true)
-            .required(true))
-        .arg(Arg::with_name("eth_private_key")
-            .long("eth_private_key")
-            .help("Ethereum private key used for obtaining bandwidth tokens from ERC20 tokens")
-            .takes_value(true)
-            .required(true));
-
-    app
-}
-
-// this behaviour should definitely be changed, we shouldn't
-// need to get bandwidth credential for registration
-#[cfg(feature = "coconut")]
-async fn _prepare_temporary_credential(validators: &[Url], raw_identity: &[u8]) -> Credential {
-    let verification_key = obtain_aggregate_verification_key(validators)
-        .await
-        .expect("could not obtain aggregate verification key of validators");
-
-    let params = Parameters::new(TOTAL_ATTRIBUTES).unwrap();
-    let bandwidth_credential_attributes = BandwidthVoucherAttributes {
-        serial_number: params.random_scalar(),
-        binding_number: params.random_scalar(),
-        voucher_value: hash_to_scalar(BANDWIDTH_VALUE.to_be_bytes()),
-        voucher_info: hash_to_scalar("BandwidthVoucher"),
-    };
-
-    let bandwidth_credential =
-        obtain_signature(&params, &bandwidth_credential_attributes, validators)
-            .await
-            .expect("could not obtain bandwidth credential");
-
-    prepare_for_spending(
-        raw_identity,
-        &bandwidth_credential,
-        &bandwidth_credential_attributes,
-        &verification_key,
-    )
-    .expect("could not prepare out bandwidth credential for spending")
+        )
 }

 async fn register_with_gateway(
@@ -39,14 +39,5 @@ pub(crate) fn override_config(mut config: Config, matches: &ArgMatches) -> Confi
        config = config.with_port(port.unwrap());
    }

-    #[cfg(not(feature = "coconut"))]
-    if let Some(eth_endpoint) = matches.value_of("eth_endpoint") {
-        config.get_base_mut().with_eth_endpoint(eth_endpoint);
-    }
-    #[cfg(not(feature = "coconut"))]
-    if let Some(eth_private_key) = matches.value_of("eth_private_key") {
-        config.get_base_mut().with_eth_private_key(eth_private_key);
-    }
-
    config
 }
@@ -10,7 +10,7 @@ use log::*;
 use version_checker::is_minor_version_compatible;

 pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
-    let app = App::new("run")
+    App::new("run")
        .about("Run the Nym client with provided configuration client optionally overriding set parameters")
        .arg(Arg::with_name("id")
            .long("id")
@@ -44,19 +44,7 @@ pub fn command_args<'a, 'b>() -> clap::App<'a, 'b> {
            .long("port")
            .help("Port for the socket to listen on")
            .takes_value(true)
-        );
-    #[cfg(not(feature = "coconut"))]
-    let app = app
-        .arg(Arg::with_name("eth_endpoint")
-            .long("eth_endpoint")
-            .help("URL of an Ethereum full node that we want to use for getting bandwidth tokens from ERC20 tokens")
-            .takes_value(true))
-        .arg(Arg::with_name("eth_private_key")
-            .long("eth_private_key")
-            .help("Ethereum private key used for obtaining bandwidth tokens from ERC20 tokens")
-            .takes_value(true));
-
-    app
+        )
 }

 // this only checks compatibility between config the binary. It does not take into consideration
@@ -1,7 +1,7 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use clap::{crate_version, App, ArgMatches};
+use clap::{App, ArgMatches};

 pub mod client;
 mod commands;
@@ -15,7 +15,6 @@ fn main() {
    let arg_matches = App::new("Nym Socks5 Proxy")
        .version(env!("CARGO_PKG_VERSION"))
        .author("Nymtech")
-        .long_version(&*long_version())
        .about("A Socks5 localhost proxy that converts incoming messages to Sphinx and sends them to a Nym address")
        .subcommand(commands::init::command_args())
        .subcommand(commands::run::command_args())
@@ -51,38 +50,7 @@ fn banner() -> String {
             (socks5 proxy - version {:})

    "#,
-        crate_version!()
-    )
-}
-
-fn long_version() -> String {
-    format!(
-        r#"
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-{:<20}{}
-"#,
-        "Build Timestamp:",
-        env!("VERGEN_BUILD_TIMESTAMP"),
-        "Build Version:",
-        env!("VERGEN_BUILD_SEMVER"),
-        "Commit SHA:",
-        env!("VERGEN_GIT_SHA"),
-        "Commit Date:",
-        env!("VERGEN_GIT_COMMIT_TIMESTAMP"),
-        "Commit Branch:",
-        env!("VERGEN_GIT_BRANCH"),
-        "rustc Version:",
-        env!("VERGEN_RUSTC_SEMVER"),
-        "rustc Channel:",
-        env!("VERGEN_RUSTC_CHANNEL"),
-        "cargo Profile:",
-        env!("VERGEN_CARGO_PROFILE"),
+        env!("CARGO_PKG_VERSION")
    )
 }

@@ -3,24 +3,21 @@
  windows_subsystem = "windows"
 )]

-use std::sync::Arc;
-
-use tokio::sync::RwLock;
-use url::Url;
-
 use coconut_interface::{
  self, hash_to_scalar, Attribute, Credential, Parameters, Signature, Theta, VerificationKey,
 };
 use credentials::{obtain_aggregate_signature, obtain_aggregate_verification_key};
+use std::sync::Arc;
+use tokio::sync::RwLock;
+use url::Url;

 struct State {
  signatures: Vec<Signature>,
  n_attributes: u32,
  params: Parameters,
-  serial_number: Attribute,
-  binding_number: Attribute,
-  voucher_value: Attribute,
-  voucher_info: Attribute,
+  public_attributes_bytes: Vec<Vec<u8>>,
+  public_attributes: Vec<Attribute>,
+  private_attributes: Vec<Attribute>,
  aggregated_verification_key: Option<VerificationKey>,
 }

@@ -40,10 +37,9 @@ impl State {
      signatures: Vec::new(),
      n_attributes,
      params,
-      serial_number: private_attributes[0],
-      binding_number: private_attributes[1],
-      voucher_value: public_attributes[0],
-      voucher_info: public_attributes[1],
+      public_attributes_bytes,
+      public_attributes,
+      private_attributes,
      aggregated_verification_key: None,
    }
  }
@@ -67,8 +63,8 @@ async fn randomise_credential(
 ) -> Result<Vec<Signature>, String> {
  let mut state = state.write().await;
  let signature = state.signatures.remove(idx);
-  let (new_signature, _) = signature.randomise(&state.params);
-  state.signatures.insert(idx, new_signature);
+  let new = signature.randomise(&state.params);
+  state.signatures.insert(idx, new);
  Ok(state.signatures.clone())
 }

@@ -121,15 +117,14 @@ async fn prove_credential(
  let state = state.read().await;

  if let Some(signature) = state.signatures.get(idx) {
-    match coconut_interface::prove_bandwidth_credential(
+    match coconut_interface::prove_credential(
      &state.params,
      &verification_key,
      signature,
-      state.serial_number,
-      state.binding_number,
+      &state.private_attributes,
    ) {
      Ok(theta) => Ok(theta),
-      Err(e) => Err(format!("{:?}", e)),
+      Err(e) => Err(format!("{}", e)),
    }
  } else {
    Err("Got invalid Signature idx".to_string())
@@ -149,15 +144,10 @@ async fn verify_credential(

  let state = state.read().await;

-  let public_attributes_bytes = vec![
-    state.voucher_value.to_bytes().to_vec(),
-    state.voucher_info.to_bytes().to_vec(),
-  ];
-
  let credential = Credential::new(
    state.n_attributes,
    theta,
-    public_attributes_bytes,
+    state.public_attributes_bytes.clone(),
    state
      .signatures
      .get(idx)
@@ -174,13 +164,11 @@ async fn get_credential(
 ) -> Result<Vec<Signature>, String> {
  let guard = state.read().await;
  let parsed_urls = parse_url_validators(&validator_urls)?;
-  let public_attributes = vec![guard.voucher_value, guard.voucher_info];
-  let private_attributes = vec![guard.serial_number, guard.binding_number];

  let signature = obtain_aggregate_signature(
    &guard.params,
-    &public_attributes,
-    &private_attributes,
+    &guard.public_attributes,
+    &guard.private_attributes,
    &parsed_urls,
  )
  .await
@@ -1,83 +1,41 @@
 {
    "root": true,
+    "parser": "@typescript-eslint/parser",
+    "plugins": [
+        "@typescript-eslint"
+    ],
    "env": {
-        "browser": true,
        "es6": true,
-        "node": true
+        "node": true,
+        "mocha": true
    },
+    "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/eslint-recommended",
+        "plugin:@typescript-eslint/recommended"
+    ],
    "parserOptions": {
-        "ecmaVersion": 2019,
+        "ecmaVersion": 2018,
        "sourceType": "module"
    },
-    "globals": {
-        "Atomics": "readonly",
-        "SharedArrayBuffer": "readonly"
-    },
-    "plugins": ["prettier", "mocha"],
-    "extends": [
-        "airbnb-base",
-        "airbnb-typescript/base",
-        "prettier"],
    "rules": {
-        "prettier/prettier": "error",
-        "import/prefer-default-export": "off",
-        "import/no-extraneous-dependencies": [
+        "no-console": "off",
+        "linebreak-style": "off",
+        "quotes": [
            "error",
+            "double",
            {
-                "devDependencies": [
-                    "**/*.test.[jt]s",
-                    "**/*.spec.[jt]s"
-                ]
+                "allowTemplateLiterals": true
            }
        ],
-        "import/extensions": [
+        "keyword-spacing": [
            "error",
-            "ignorePackages",
            {
-                "ts": "never",
-                "js": "never"
+                "before": true
            }
+        ],
+        "space-before-blocks": [
+            "error"
        ]
-    },
-    "overrides": [
-        {
-            "files": "**/*.ts",
-            "parser": "@typescript-eslint/parser",
-            "parserOptions": {
-                "project": "./tsconfig.json"
-            },
-            "plugins": ["@typescript-eslint/eslint-plugin"],
-            "extends": [
-                "plugin:@typescript-eslint/eslint-recommended",
-                "plugin:@typescript-eslint/recommended",
-                "prettier"
-            ],
-            "rules": {
-                "@typescript-eslint/explicit-function-return-type": "off",
-                "@typescript-eslint/no-explicit-any": "off",
-                "@typescript-eslint/no-var-requires": "off",
-                "no-use-before-define": [0],
-                "@typescript-eslint/no-use-before-define": [1],
-                "import/no-unresolved": 0,
-                "import/no-extraneous-dependencies": [
-                    "error",
-                    {
-                        "devDependencies": [
-                            "**/*.test.ts",
-                            "**/*.spec.ts"
-                        ]
-                    }
-                ],
-                "quotes": "off",
-                "@typescript-eslint/quotes": [
-                    2,
-                    "single",
-                    {
-                        "avoidEscape": true
-                    }
-                ],
-                "@typescript-eslint/no-unused-vars": [2, { "argsIgnorePattern": "^_" }]
-            }
-        }
-    ]
-}
+    }
+}
@@ -1,6 +0,0 @@
-{
-  "trailingComma": "all",
-  "singleQuote": true,
-  "printWidth": 120,
-  "tabWidth": 2
-}
@@ -1,6 +1,6 @@
 {
  "name": "@nymproject/nym-validator-client",
-  "version": "0.19.0",
+  "version": "0.18.0",
  "description": "A TypeScript client for interacting with smart contracts in Nym validators",
  "repository": "https://github.com/nymtech/nym",
  "main": "./dist/index.js",
@@ -9,8 +9,7 @@
    "build": "tsc",
    "test": "ts-mocha tests/**/*.test.ts",
    "coverage": "nyc npm test",
-    "lint": "eslint src",
-    "lint:fix": "eslint src --fix",
+    "lint": "eslint \"**/*.ts\"",
    "docs": "typedoc --out docs src/index.ts"
  },
  "keywords": [],
@@ -24,33 +23,22 @@
    "@types/chai": "^4.2.15",
    "@types/expect": "^24.3.0",
    "@types/mocha": "^8.2.1",
-    "@typescript-eslint/eslint-plugin": "^5.7.0",
-    "@typescript-eslint/parser": "^5.7.0",
+    "@typescript-eslint/eslint-plugin": "^4.14.0",
+    "@typescript-eslint/parser": "^4.14.0",
    "chai": "^4.2.0",
    "eslint": "^7.18.0",
-    "eslint-config-airbnb": "^19.0.2",
-    "eslint-config-airbnb-typescript": "^16.1.0",
-    "eslint-config-prettier": "^8.3.0",
-    "eslint-import-resolver-root-import": "^1.0.4",
-    "eslint-plugin-import": "^2.25.3",
-    "eslint-plugin-mocha": "^10.0.3",
-    "eslint-plugin-prettier": "^4.0.0",
    "mocha": "^8.2.1",
    "moq.ts": "^7.2.0",
    "nyc": "^15.1.0",
-    "prettier": "^2.5.1",
    "ts-mocha": "^8.0.0",
    "typedoc": "^0.20.27",
    "typescript": "^4.1.3"
  },
  "dependencies": {
-    "@cosmjs/cosmwasm-stargate": "^0.27.0-rc2",
-    "@cosmjs/crypto": "^0.27.0-rc2",
-    "@cosmjs/math": "^0.27.0-rc2",
-    "@cosmjs/proto-signing": "^0.27.0-rc2",
-    "@cosmjs/stargate": "^0.27.0-rc2",
-    "@cosmjs/tendermint-rpc": "^0.27.0-rc2",
    "axios": "^0.21.1",
-    "cosmjs-types": "^0.4.0"
+    "@cosmjs/cosmwasm-stargate": "^0.25.5",
+    "@cosmjs/stargate": "^0.25.5",
+    "@cosmjs/math": "^0.25.5",
+    "@cosmjs/proto-signing": "^0.25.5"
  }
-}
+}
@@ -0,0 +1,41 @@
+{
+    "root": true,
+    "parser": "@typescript-eslint/parser",
+    "plugins": [
+        "@typescript-eslint"
+    ],
+    "env": {
+        "es6": true,
+        "node": true,
+        "mocha": true
+    },
+    "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/eslint-recommended",
+        "plugin:@typescript-eslint/recommended"
+    ],
+    "parserOptions": {
+        "ecmaVersion": 2018,
+        "sourceType": "module"
+    },
+    "rules": {
+        "no-console": "off",
+        "linebreak-style": "off",
+        "quotes": [
+            "error",
+            "double",
+            {
+                "allowTemplateLiterals": true
+            }
+        ],
+        "keyword-spacing": [
+            "error",
+            {
+                "before": true
+            }
+        ],
+        "space-before-blocks": [
+            "error"
+        ]
+    }
+}
@@ -0,0 +1 @@
+15.0.1
@@ -0,0 +1,59 @@
+import {GatewayBond, PagedGatewayResponse} from "../types";
+import {INetClient} from "../net-client"
+import {IQueryClient} from "../query-client";
+import {VALIDATOR_API_GATEWAYS, VALIDATOR_API_PORT} from "../index";
+import axios from "axios";
+
+
+/**
+ * There are serious limits in smart contract systems, but we need to keep track of
+ * potentially thousands of nodes. GatewaysCache instances repeatedly make requests for
+ * paged data about what gateways exist, and keep them locally in memory so that they're
+ * available for querying.
+ **/
+export default class GatewaysCache {
+    gateways: GatewayBond[]
+    client: INetClient | IQueryClient
+    perPage: number
+
+    constructor(client: INetClient | IQueryClient, perPage: number) {
+        this.client = client;
+        this.gateways = [];
+        this.perPage = perPage;
+    }
+
+    /// Makes repeated requests to assemble a full list of gateways.
+    /// Requests continue to be make as long as `shouldMakeAnotherRequest()`
+    /// returns true.
+    async refreshGateways(contractAddress: string): Promise<GatewayBond[]> {
+        let newGateways: GatewayBond[] = [];
+        let response: PagedGatewayResponse;
+        let next: string | undefined = undefined;
+        for (;;) {
+            response = await this.client.getGateways(contractAddress, this.perPage, next);
+            newGateways = newGateways.concat(response.nodes)
+            next = response.start_next_after;
+            // if `start_next_after` is not set, we're done
+            if (!next) {
+                break
+            }
+        }
+
+        this.gateways = newGateways
+        return newGateways;
+    }
+
+    /// Makes requests to assemble a full list of gateways from validator-api
+    async refreshValidatorAPIGateways(urls: string[]): Promise<GatewayBond[]> {
+        for (const url of urls) {
+            const validator_api_url = new URL(url);
+            validator_api_url.port = VALIDATOR_API_PORT;
+            validator_api_url.pathname += VALIDATOR_API_GATEWAYS;
+            const response = await axios.get(validator_api_url.toString());
+            if (response.status == 200) {
+                return response.data;
+            }
+        }
+        throw new Error("None of the provided validators seem to be alive")
+    }
+}
@@ -0,0 +1,60 @@
+import {MixNodeBond, PagedMixnodeResponse} from "../types";
+import { INetClient } from "../net-client"
+import {IQueryClient} from "../query-client";
+import {VALIDATOR_API_MIXNODES, VALIDATOR_API_PORT} from "../index";
+import axios from "axios";
+
+export { MixnodesCache };
+
+/**
+ * There are serious limits in smart contract systems, but we need to keep track of
+ * potentially thousands of nodes. MixnodeCache instances repeatedly make requests for
+ *  paged data about what mixnodes exist, and keep them locally in memory so that they're
+ *  available for querying.
+ *  */
+export default class MixnodesCache {
+    mixNodes: MixNodeBond[]
+    client: INetClient | IQueryClient
+    perPage: number
+
+    constructor(client: INetClient | IQueryClient, perPage: number) {
+        this.client = client;
+        this.mixNodes = [];
+        this.perPage = perPage;
+    }
+
+    /// Makes repeated requests to assemble a full list of nodes. 
+    /// Requests continue to be make as long as `shouldMakeAnotherRequest()`
+    // returns true. 
+    async refreshMixNodes(contractAddress: string): Promise<MixNodeBond[]> {
+        let newMixnodes: MixNodeBond[] = [];
+        let response: PagedMixnodeResponse;
+        let next: string | undefined = undefined;
+        for (;;) {
+            response = await this.client.getMixNodes(contractAddress, this.perPage, next);
+            newMixnodes = newMixnodes.concat(response.nodes)
+            next = response.start_next_after;
+            // if `start_next_after` is not set, we're done
+            if (!next) {
+                break
+            }
+        }
+
+        this.mixNodes = newMixnodes
+        return this.mixNodes;
+    }
+
+    /// Makes  requests to assemble a full list of mixnodes from validator-api
+    async refreshValidatorAPIMixNodes(urls: string[]): Promise<MixNodeBond[]> {
+        for (const url of urls) {
+            const validator_api_url = new URL(url);
+            validator_api_url.port = VALIDATOR_API_PORT;
+            validator_api_url.pathname += VALIDATOR_API_MIXNODES;
+            const response = await axios.get(validator_api_url.toString());
+            if (response.status == 200) {
+                return response.data;
+            }
+        }
+        throw new Error("None of the provided validators seem to be alive")
+    }
+}
@@ -1,68 +1,73 @@
-import { Decimal } from '@cosmjs/math';
-import { Coin } from '@cosmjs/stargate';
+import { Decimal } from "@cosmjs/math";
+import { Coin } from ".";

 // NARROW NO-BREAK SPACE (U+202F)
-const thinSpace = '\u202F';
+const thinSpace = "\u202F";

 export function printableCoin(coin?: Coin): string {
-  if (!coin) {
-    return '0';
-  }
-  if (coin.denom.startsWith('u')) {
-    const ticker = coin.denom.slice(1).toUpperCase();
-    return Decimal.fromAtomics(coin.amount, 6).toString() + thinSpace + ticker;
-  }
-  return coin.amount + thinSpace + coin.denom;
+    if (!coin) {
+        return "0";
+    }
+    if (coin.denom.startsWith("u")) {
+        const ticker = coin.denom.slice(1).toUpperCase();
+        return Decimal.fromAtomics(coin.amount, 6).toString() + thinSpace + ticker;
+    } else {
+        return coin.amount + thinSpace + coin.denom;
+    }
 }

 export function printableBalance(balance?: readonly Coin[]): string {
-  if (!balance || balance.length === 0) return '–';
-  return balance.map(printableCoin).join(', ');
+    if (!balance || balance.length === 0) return "–";
+    return balance.map(printableCoin).join(", ");
 }

 // converts display amount, such as "12.0346" to its native token representation,
 // with 6 fractional digits. So in that case it would result in "12034600"
 // Basically does the same job as `displayAmountToNative` but without the requirement
 // of having the coinMap
-export function printableBalanceToNative(amountToDisplay: string): string {
-  const decimalAmount = Decimal.fromUserInput(amountToDisplay, 6);
-  return decimalAmount.atomics;
+export function printableBalanceToNative(amountToDisplay: string): string  {
+    const decimalAmount = Decimal.fromUserInput(amountToDisplay, 6);
+    return decimalAmount.atomics;
 }

 // reciprocal of `printableBalanceToNative`, takes, for example 10000000 and returns 10
 export function nativeToPrintable(nativeValue: string): string {
-  return Decimal.fromAtomics(nativeValue, 6).toString();
+    return Decimal.fromAtomics(nativeValue, 6).toString()
 }

 export interface MappedCoin {
-  readonly denom: string;
-  readonly fractionalDigits: number;
+    readonly denom: string;
+    readonly fractionalDigits: number;
 }

 export interface CoinMap {
-  readonly [key: string]: MappedCoin;
+    readonly [key: string]: MappedCoin;
 }

 export function nativeCoinToDisplay(coin: Coin, coinMap: CoinMap): Coin {
-  if (!coinMap) return coin;
+    if (!coinMap) return coin;

-  const coinToDisplay = coinMap[coin.denom];
-  if (!coinToDisplay) return coin;
+    const coinToDisplay = coinMap[coin.denom];
+    if (!coinToDisplay) return coin;

-  const amountToDisplay = Decimal.fromAtomics(coin.amount, coinToDisplay.fractionalDigits).toString();
+    const amountToDisplay = Decimal.fromAtomics(coin.amount, coinToDisplay.fractionalDigits).toString();

-  return { denom: coinToDisplay.denom, amount: amountToDisplay };
+    return { denom: coinToDisplay.denom, amount: amountToDisplay };
 }

 // display amount is eg "12.0346", return is in native tokens
 // with 6 fractional digits, this would be eg. "12034600"
-export function displayAmountToNative(amountToDisplay: string, coinMap: CoinMap, nativeDenom: string): string {
-  const fractionalDigits = coinMap[nativeDenom]?.fractionalDigits;
-  if (fractionalDigits) {
-    // use https://github.com/CosmWasm/cosmjs/blob/v0.22.2/packages/math/src/decimal.ts
-    const decimalAmount = Decimal.fromUserInput(amountToDisplay, fractionalDigits);
-    return decimalAmount.atomics;
-  }
+export function displayAmountToNative(
+    amountToDisplay: string,
+    coinMap: CoinMap,
+    nativeDenom: string,
+): string {
+    const fractionalDigits = coinMap[nativeDenom]?.fractionalDigits;
+    if (fractionalDigits) {
+        // use https://github.com/CosmWasm/cosmjs/blob/v0.22.2/packages/math/src/decimal.ts
+        const decimalAmount = Decimal.fromUserInput(amountToDisplay, fractionalDigits);
+        return decimalAmount.atomics;
+    }

-  return amountToDisplay;
+    return amountToDisplay;
 }
@@ -0,0 +1,207 @@
+import { SigningCosmWasmClient, SigningCosmWasmClientOptions } from "@cosmjs/cosmwasm-stargate";
+import {
+    Delegation,
+    GatewayOwnershipResponse,
+    MixOwnershipResponse, PagedGatewayDelegationsResponse,
+    PagedGatewayResponse, PagedMixDelegationsResponse,
+    PagedMixnodeResponse,
+    StateParams
+} from "./types";
+import { DirectSecp256k1HdWallet, EncodeObject } from "@cosmjs/proto-signing";
+import { Coin, StdFee } from "@cosmjs/stargate";
+import { BroadcastTxResponse } from "@cosmjs/stargate"
+import { nymGasLimits, nymGasPrice } from "./stargate-helper"
+import {
+    ExecuteResult,
+    InstantiateOptions,
+    InstantiateResult,
+    MigrateResult,
+    UploadMeta,
+    UploadResult
+} from "@cosmjs/cosmwasm-stargate";
+
+export interface INetClient {
+    clientAddress: string;
+
+    getBalance(address: string, denom: string): Promise<Coin | null>;
+
+    getMixNodes(contractAddress: string, limit: number, start_after?: string): Promise<PagedMixnodeResponse>;
+
+    getGateways(contractAddress: string, limit: number, start_after?: string): Promise<PagedGatewayResponse>;
+
+    getMixDelegations(contractAddress: string, mixIdentity: string, limit: number, start_after?: string): Promise<PagedMixDelegationsResponse>
+
+    getMixDelegation(contractAddress: string, mixIdentity: string, delegatorAddress: string): Promise<Delegation>
+
+    getGatewayDelegations(contractAddress: string, gatewayIdentity: string, limit: number, start_after?: string): Promise<PagedGatewayDelegationsResponse>
+
+    getGatewayDelegation(contractAddress: string, gatewayIdentity: string, delegatorAddress: string): Promise<Delegation>
+
+    ownsMixNode(contractAddress: string, address: string): Promise<MixOwnershipResponse>;
+
+    ownsGateway(contractAddress: string, address: string): Promise<GatewayOwnershipResponse>;
+
+    getStateParams(contractAddress: string): Promise<StateParams>;
+
+    signAndBroadcast(signerAddress: string, messages: readonly EncodeObject[], fee: StdFee, memo?: string): Promise<BroadcastTxResponse>;
+
+    executeContract(senderAddress: string, contractAddress: string, handleMsg: Record<string, unknown>, memo?: string, transferAmount?: readonly Coin[]): Promise<ExecuteResult>;
+
+    instantiate(senderAddress: string, codeId: number, initMsg: Record<string, unknown>, label: string, options?: InstantiateOptions): Promise<InstantiateResult>;
+
+    sendTokens(senderAddress: string, recipientAddress: string, transferAmount: readonly Coin[], memo?: string): Promise<BroadcastTxResponse>;
+
+    upload(senderAddress: string, wasmCode: Uint8Array, meta?: UploadMeta, memo?: string): Promise<UploadResult>;
+
+    changeValidator(newUrl: string): Promise<void>
+}
+
+/**
+ * Takes care of network communication between this code and the validator.
+ * Depends on `SigningCosmWasClient`, which signs all requests using keypairs
+ * derived from on bech32 mnemonics.
+ *
+ * Wraps several methods from CosmWasmSigningClient so we can mock them for
+ * unit testing.
+ */
+export default class NetClient implements INetClient {
+    clientAddress: string;
+    private cosmClient: SigningCosmWasmClient;
+
+    // helpers for changing validators without having to remake the wallet
+    private readonly wallet: DirectSecp256k1HdWallet;
+    private readonly signerOptions: SigningCosmWasmClientOptions;
+
+    private constructor(clientAddress: string, cosmClient: SigningCosmWasmClient, wallet: DirectSecp256k1HdWallet, signerOptions: SigningCosmWasmClientOptions) {
+        this.clientAddress = clientAddress;
+        this.cosmClient = cosmClient;
+        this.wallet = wallet;
+        this.signerOptions = signerOptions;
+    }
+
+    public static async connect(wallet: DirectSecp256k1HdWallet, url: string, prefix: string): Promise<INetClient> {
+        const [{address}] = await wallet.getAccounts();
+        const signerOptions: SigningCosmWasmClientOptions = {
+            gasPrice: nymGasPrice(prefix),
+            gasLimits: nymGasLimits,
+        };
+        const client = await SigningCosmWasmClient.connectWithSigner(url, wallet, signerOptions);
+        return new NetClient(address, client, wallet, signerOptions);
+    }
+
+    async changeValidator(url: string): Promise<void> {
+        this.cosmClient = await SigningCosmWasmClient.connectWithSigner(url, this.wallet, this.signerOptions);
+    }
+
+    public getMixNodes(contractAddress: string, limit: number, start_after?: string): Promise<PagedMixnodeResponse> {
+        if (start_after == undefined) { // TODO: check if we can take this out, I'm not sure what will happen if we send an "undefined" so I'm playing it safe here.
+            return this.cosmClient.queryContractSmart(contractAddress, {get_mix_nodes: {limit}});
+        } else {
+            return this.cosmClient.queryContractSmart(contractAddress, {get_mix_nodes: {limit, start_after}});
+        }
+    }
+
+    public getGateways(contractAddress: string, limit: number, start_after?: string): Promise<PagedGatewayResponse> {
+        if (start_after == undefined) { // TODO: check if we can take this out, I'm not sure what will happen if we send an "undefined" so I'm playing it safe here.
+            return this.cosmClient.queryContractSmart(contractAddress, {get_gateways: {limit}});
+        } else {
+            return this.cosmClient.queryContractSmart(contractAddress, {get_gateways: {limit, start_after}});
+        }
+    }
+
+    public getMixDelegations(contractAddress: string, mixIdentity: string, limit: number, start_after?: string): Promise<PagedMixDelegationsResponse> {
+        if (start_after == undefined) { // TODO: check if we can take this out, I'm not sure what will happen if we send an "undefined" so I'm playing it safe here.
+            return this.cosmClient.queryContractSmart(contractAddress, {
+                get_mix_delegations: {
+                    mix_identity: mixIdentity,
+                    limit
+                }
+            });
+        } else {
+            return this.cosmClient.queryContractSmart(contractAddress, {
+                get_mix_delegations: {
+                    mix_identity: mixIdentity,
+                    limit,
+                    start_after
+                }
+            });
+        }
+    }
+
+    public getMixDelegation(contractAddress: string, mixIdentity: string, delegatorAddress: string): Promise<Delegation> {
+        return this.cosmClient.queryContractSmart(contractAddress, {
+            get_mix_delegation: {
+                mix_identity: mixIdentity,
+                address: delegatorAddress
+            }
+        });
+    }
+
+    public getGatewayDelegations(contractAddress: string, gatewayIdentity: string, limit: number, start_after?: string): Promise<PagedGatewayDelegationsResponse> {
+        if (start_after == undefined) { // TODO: check if we can take this out, I'm not sure what will happen if we send an "undefined" so I'm playing it safe here.
+            return this.cosmClient.queryContractSmart(contractAddress, {
+                get_gateway_delegations: {
+                    gateway_identity: gatewayIdentity,
+                    limit
+                }
+            });
+        } else {
+            return this.cosmClient.queryContractSmart(contractAddress, {
+                get_gateway_delegations: {
+                    gateway_identity: gatewayIdentity,
+                    limit,
+                    start_after
+                }
+            });
+        }
+    }
+
+    public getGatewayDelegation(contractAddress: string, gatewayIdentity: string, delegatorAddress: string): Promise<Delegation> {
+        return this.cosmClient.queryContractSmart(contractAddress, {
+            get_gateway_delegation: {
+                gateway_identity: gatewayIdentity,
+                address: delegatorAddress
+            }
+        });
+    }
+
+    public ownsMixNode(contractAddress: string, address: string): Promise<MixOwnershipResponse> {
+        return this.cosmClient.queryContractSmart(contractAddress, {owns_mixnode: {address}});
+    }
+
+    public ownsGateway(contractAddress: string, address: string): Promise<GatewayOwnershipResponse> {
+        return this.cosmClient.queryContractSmart(contractAddress, {owns_gateway: {address}});
+    }
+
+    public getBalance(address: string, denom: string): Promise<Coin | null> {
+        return this.cosmClient.getBalance(address, denom);
+    }
+
+    public getStateParams(contractAddress: string): Promise<StateParams> {
+        return this.cosmClient.queryContractSmart(contractAddress, {state_params: {}});
+    }
+
+    public executeContract(senderAddress: string, contractAddress: string, handleMsg: Record<string, unknown>, memo?: string, transferAmount?: readonly Coin[]): Promise<ExecuteResult> {
+        return this.cosmClient.execute(senderAddress, contractAddress, handleMsg, memo, transferAmount);
+    }
+
+    public signAndBroadcast(signerAddress: string, messages: readonly EncodeObject[], fee: StdFee, memo?: string): Promise<BroadcastTxResponse> {
+        return this.cosmClient.signAndBroadcast(signerAddress, messages, fee, memo)
+    }
+
+    public sendTokens(senderAddress: string, recipientAddress: string, transferAmount: readonly Coin[], memo?: string): Promise<BroadcastTxResponse> {
+        return this.cosmClient.sendTokens(senderAddress, recipientAddress, transferAmount, memo);
+    }
+
+    public upload(senderAddress: string, wasmCode: Uint8Array, meta?: UploadMeta, memo?: string): Promise<UploadResult> {
+        return this.cosmClient.upload(senderAddress, wasmCode, meta, memo);
+    }
+
+    public instantiate(senderAddress: string, codeId: number, initMsg: Record<string, unknown>, label: string, options?: InstantiateOptions): Promise<InstantiateResult> {
+        return this.cosmClient.instantiate(senderAddress, codeId, initMsg, label, options);
+    }
+
+    public migrate(senderAddress: string, contractAddress: string, codeId: number, migrateMsg: Record<string, unknown>, memo?: string): Promise<MigrateResult> {
+        return this.cosmClient.migrate(senderAddress, contractAddress, codeId, migrateMsg, memo)
+    }
+}
@@ -1,182 +0,0 @@
-/*
- * Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { JsonObject } from '@cosmjs/cosmwasm-stargate/build/queries';
-// eslint-disable-next-line import/no-cycle
-import { INymdQuery } from './query-client';
-import {
-  ContractStateParams,
-  Delegation,
-  GatewayOwnershipResponse,
-  LayerDistribution,
-  MixnetContractVersion,
-  MixOwnershipResponse,
-  PagedAllDelegationsResponse,
-  PagedDelegatorDelegationsResponse,
-  PagedGatewayResponse,
-  PagedMixDelegationsResponse,
-  PagedMixnodeResponse,
-  RewardingIntervalResponse,
-  RewardingStatus,
-} from './types';
-
-interface SmartContractQuery {
-  queryContractSmart(address: string, queryMsg: Record<string, unknown>): Promise<JsonObject>;
-}
-
-export default class NymdQuerier implements INymdQuery {
-  client: SmartContractQuery;
-
-  constructor(client: SmartContractQuery) {
-    this.client = client;
-  }
-
-  getContractVersion(mixnetContractAddress: string): Promise<MixnetContractVersion> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_contract_version: {},
-    });
-  }
-
-  getMixNodesPaged(mixnetContractAddress: string, limit?: number, startAfter?: string): Promise<PagedMixnodeResponse> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_mix_nodes: {
-        limit,
-        start_after: startAfter,
-      },
-    });
-  }
-
-  getGatewaysPaged(mixnetContractAddress: string, limit?: number, startAfter?: string): Promise<PagedGatewayResponse> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_gateways: {
-        limit,
-        start_after: startAfter,
-      },
-    });
-  }
-
-  ownsMixNode(mixnetContractAddress: string, address: string): Promise<MixOwnershipResponse> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      owns_mixnode: {
-        address,
-      },
-    });
-  }
-
-  ownsGateway(mixnetContractAddress: string, address: string): Promise<GatewayOwnershipResponse> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      owns_gateway: {
-        address,
-      },
-    });
-  }
-
-  getStateParams(mixnetContractAddress: string): Promise<ContractStateParams> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      state_params: {},
-    });
-  }
-
-  getCurrentRewardingInterval(mixnetContractAddress: string): Promise<RewardingIntervalResponse> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      current_rewarding_interval: {},
-    });
-  }
-
-  getAllNetworkDelegationsPaged(
-    mixnetContractAddress: string,
-    limit?: number,
-    startAfter?: [string, string],
-  ): Promise<PagedAllDelegationsResponse> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_all_network_delegations: {
-        start_after: startAfter,
-        limit,
-      },
-    });
-  }
-
-  getMixNodeDelegationsPaged(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    limit?: number,
-    startAfter?: string,
-  ): Promise<PagedMixDelegationsResponse> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_mixnode_delegations: {
-        mix_identity: mixIdentity,
-        start_after: startAfter,
-        limit,
-      },
-    });
-  }
-
-  getDelegatorDelegationsPaged(
-    mixnetContractAddress: string,
-    delegator: string,
-    limit?: number,
-    startAfter?: string,
-  ): Promise<PagedDelegatorDelegationsResponse> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_delegator_delegations: {
-        delegator,
-        start_after: startAfter,
-        limit,
-      },
-    });
-  }
-
-  getDelegationDetails(mixnetContractAddress: string, mixIdentity: string, delegator: string): Promise<Delegation> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_delegation_details: {
-        mix_identity: mixIdentity,
-        delegator,
-      },
-    });
-  }
-
-  getLayerDistribution(mixnetContractAddress: string): Promise<LayerDistribution> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      layer_distribution: {},
-    });
-  }
-
-  getRewardPool(mixnetContractAddress: string): Promise<string> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_reward_pool: {},
-    });
-  }
-
-  getCirculatingSupply(mixnetContractAddress: string): Promise<string> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_circulating_supply: {},
-    });
-  }
-
-  getEpochRewardPercent(mixnetContractAddress: string): Promise<number> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_epoch_reward_percent: {},
-    });
-  }
-
-  getSybilResistancePercent(mixnetContractAddress: string): Promise<number> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_sybil_resistance_percent: {},
-    });
-  }
-
-  getRewardingStatus(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    rewardingIntervalNonce: number,
-  ): Promise<RewardingStatus> {
-    return this.client.queryContractSmart(mixnetContractAddress, {
-      get_rewarding_status: {
-        mix_identity: mixIdentity,
-        rewarding_interval_nonce: rewardingIntervalNonce,
-      },
-    });
-  }
-}
@@ -1,218 +1,147 @@
-import { CosmWasmClient } from '@cosmjs/cosmwasm-stargate';
-import { Tendermint34Client } from '@cosmjs/tendermint-rpc';
+import { Coin } from "@cosmjs/stargate";
+import { CosmWasmClient } from "@cosmjs/cosmwasm-stargate";
 import {
-  Account,
-  Block,
-  Coin,
-  DeliverTxResponse,
-  IndexedTx,
-  SearchTxFilter,
-  SearchTxQuery,
-  SequenceResponse,
-} from '@cosmjs/stargate';
-import { JsonObject } from '@cosmjs/cosmwasm-stargate/build/queries';
-import { Code, CodeDetails, Contract, ContractCodeHistoryEntry } from '@cosmjs/cosmwasm-stargate/build/cosmwasmclient';
-// eslint-disable-next-line import/no-cycle
-import NymdQuerier from './nymd-querier';
-import {
-  ContractStateParams,
-  Delegation,
-  GatewayBond,
-  GatewayOwnershipResponse,
-  LayerDistribution,
-  MixnetContractVersion,
-  MixNodeBond,
-  MixOwnershipResponse,
-  PagedAllDelegationsResponse,
-  PagedDelegatorDelegationsResponse,
-  PagedGatewayResponse,
-  PagedMixDelegationsResponse,
-  PagedMixnodeResponse,
-  RewardingIntervalResponse,
-  RewardingStatus,
-} from './types';
-import ValidatorApiQuerier, { IValidatorApiQuery } from './validator-api-querier';
+    Delegation,
+    GatewayOwnershipResponse,
+    MixOwnershipResponse, PagedGatewayDelegationsResponse,
+    PagedGatewayResponse, PagedMixDelegationsResponse,
+    PagedMixnodeResponse,
+    StateParams
+} from "./types";

-export interface ICosmWasmQuery {
-  // methods exposed by `CosmWasmClient`
-  getChainId(): Promise<string>;
-  getHeight(): Promise<number>;
-  getAccount(searchAddress: string): Promise<Account | null>;
-  getSequence(address: string): Promise<SequenceResponse>;
-  getBlock(height?: number): Promise<Block>;
-  getBalance(address: string, searchDenom: string): Promise<Coin>;
-  getTx(id: string): Promise<IndexedTx | null>;
-  searchTx(query: SearchTxQuery, filter?: SearchTxFilter): Promise<readonly IndexedTx[]>;
-  disconnect(): void;
-  broadcastTx(tx: Uint8Array, timeoutMs?: number, pollIntervalMs?: number): Promise<DeliverTxResponse>;
-  getCodes(): Promise<readonly Code[]>;
-  getCodeDetails(codeId: number): Promise<CodeDetails>;
-  getContracts(codeId: number): Promise<readonly string[]>;
-  getContract(address: string): Promise<Contract>;
-  getContractCodeHistory(address: string): Promise<readonly ContractCodeHistoryEntry[]>;
-  queryContractRaw(address: string, key: Uint8Array): Promise<Uint8Array | null>;
-  queryContractSmart(address: string, queryMsg: Record<string, unknown>): Promise<JsonObject>;
+export interface IQueryClient {
+    getBalance(address: string, stakeDenom: string): Promise<Coin | null>;
+
+    getMixNodes(contractAddress: string, limit: number, start_after?: string): Promise<PagedMixnodeResponse>;
+
+    getGateways(contractAddress: string, limit: number, start_after?: string): Promise<PagedGatewayResponse>;
+
+    getMixDelegations(contractAddress: string, mixIdentity: string, limit: number, start_after?: string): Promise<PagedMixDelegationsResponse>
+
+    getMixDelegation(contractAddress: string, mixIdentity: string, delegatorAddress: string): Promise<Delegation>
+
+    getGatewayDelegations(contractAddress: string, gatewayIdentity: string, limit: number, start_after?: string): Promise<PagedGatewayDelegationsResponse>
+
+    getGatewayDelegation(contractAddress: string, gatewayIdentity: string, delegatorAddress: string): Promise<Delegation>
+
+    ownsMixNode(contractAddress: string, address: string): Promise<MixOwnershipResponse>;
+
+    ownsGateway(contractAddress: string, address: string): Promise<GatewayOwnershipResponse>;
+
+    getStateParams(contractAddress: string): Promise<StateParams>;
+
+    changeValidator(newUrl: string): Promise<void>
 }

-export interface INymdQuery {
-  // nym-specific implemented inside NymQuerier
-  getContractVersion(mixnetContractAddress: string): Promise<MixnetContractVersion>;
+/**
+ * Takes care of network communication between this code and the validator.
+ * Depends on `SigningCosmWasClient`, which signs all requests using keypairs
+ * derived from on bech32 mnemonics.
+ *
+ * Wraps several methods from CosmWasmSigningClient so we can mock them for
+ * unit testing.
+ */
+export default class QueryClient implements IQueryClient {
+    private cosmClient: CosmWasmClient;

-  getMixNodesPaged(mixnetContractAddress: string, limit?: number, startAfter?: string): Promise<PagedMixnodeResponse>;
-  getGatewaysPaged(mixnetContractAddress: string, limit?: number, startAfter?: string): Promise<PagedGatewayResponse>;
-  ownsMixNode(mixnetContractAddress: string, address: string): Promise<MixOwnershipResponse>;
-  ownsGateway(mixnetContractAddress: string, address: string): Promise<GatewayOwnershipResponse>;
-  getStateParams(mixnetContractAddress: string): Promise<ContractStateParams>;
-  getCurrentRewardingInterval(mixnetContractAddress: string): Promise<RewardingIntervalResponse>;
+    private constructor(cosmClient: CosmWasmClient) {
+        this.cosmClient = cosmClient;
+    }

-  getAllNetworkDelegationsPaged(
-    mixnetContractAddress: string,
-    limit?: number,
-    startAfter?: [string, string],
-  ): Promise<PagedAllDelegationsResponse>;
-  getMixNodeDelegationsPaged(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    limit?: number,
-    startAfter?: string,
-  ): Promise<PagedMixDelegationsResponse>;
-  getDelegatorDelegationsPaged(
-    mixnetContractAddress: string,
-    delegator: string,
-    limit?: number,
-    startAfter?: string,
-  ): Promise<PagedDelegatorDelegationsResponse>;
-  getDelegationDetails(mixnetContractAddress: string, mixIdentity: string, delegator: string): Promise<Delegation>;
+    public static async connect(url: string): Promise<IQueryClient> {
+        const client = await CosmWasmClient.connect(url)
+        return new QueryClient(client)
+    }

-  getLayerDistribution(mixnetContractAddress: string): Promise<LayerDistribution>;
-  getRewardPool(mixnetContractAddress: string): Promise<string>;
-  getCirculatingSupply(mixnetContractAddress: string): Promise<string>;
-  getEpochRewardPercent(mixnetContractAddress: string): Promise<number>;
-  getSybilResistancePercent(mixnetContractAddress: string): Promise<number>;
-  getRewardingStatus(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    rewardingIntervalNonce: number,
-  ): Promise<RewardingStatus>;
-}
-
-export interface IQueryClient extends ICosmWasmQuery, INymdQuery, IValidatorApiQuery {}
-
-export default class QueryClient extends CosmWasmClient implements IQueryClient {
-  private nymdQuerier: NymdQuerier;
-
-  private validatorApiQuerier: ValidatorApiQuerier;
-
-  private constructor(tmClient: Tendermint34Client, validatorApiUrl: string) {
-    super(tmClient);
-    this.nymdQuerier = new NymdQuerier(this);
-    this.validatorApiQuerier = new ValidatorApiQuerier(validatorApiUrl);
-  }
-
-  public static async connectWithNym(nymdUrl: string, validatorApiUrl: string): Promise<QueryClient> {
-    const tmClient = await Tendermint34Client.connect(nymdUrl);
-    return new QueryClient(tmClient, validatorApiUrl);
-  }
-
-  getContractVersion(mixnetContractAddress: string): Promise<MixnetContractVersion> {
-    return this.nymdQuerier.getContractVersion(mixnetContractAddress);
-  }
-
-  getMixNodesPaged(mixnetContractAddress: string, limit?: number, startAfter?: string): Promise<PagedMixnodeResponse> {
-    return this.nymdQuerier.getMixNodesPaged(mixnetContractAddress, limit, startAfter);
-  }
-
-  getGatewaysPaged(mixnetContractAddress: string, limit?: number, startAfter?: string): Promise<PagedGatewayResponse> {
-    return this.nymdQuerier.getGatewaysPaged(mixnetContractAddress, limit, startAfter);
-  }
-
-  ownsMixNode(mixnetContractAddress: string, address: string): Promise<MixOwnershipResponse> {
-    return this.nymdQuerier.ownsMixNode(mixnetContractAddress, address);
-  }
-
-  ownsGateway(mixnetContractAddress: string, address: string): Promise<GatewayOwnershipResponse> {
-    return this.nymdQuerier.ownsGateway(mixnetContractAddress, address);
-  }
-
-  getStateParams(mixnetContractAddress: string): Promise<ContractStateParams> {
-    return this.nymdQuerier.getStateParams(mixnetContractAddress);
-  }
-
-  getCurrentRewardingInterval(mixnetContractAddress: string): Promise<RewardingIntervalResponse> {
-    return this.nymdQuerier.getCurrentRewardingInterval(mixnetContractAddress);
-  }
-
-  getAllNetworkDelegationsPaged(
-    mixnetContractAddress: string,
-    limit?: number,
-    startAfter?: [string, string],
-  ): Promise<PagedAllDelegationsResponse> {
-    return this.nymdQuerier.getAllNetworkDelegationsPaged(mixnetContractAddress, limit, startAfter);
-  }
-
-  getMixNodeDelegationsPaged(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    limit?: number,
-    startAfter?: string,
-  ): Promise<PagedMixDelegationsResponse> {
-    return this.nymdQuerier.getMixNodeDelegationsPaged(mixnetContractAddress, mixIdentity, limit, startAfter);
-  }
-
-  getDelegatorDelegationsPaged(
-    mixnetContractAddress: string,
-    delegator: string,
-    limit?: number,
-    startAfter?: string,
-  ): Promise<PagedDelegatorDelegationsResponse> {
-    return this.nymdQuerier.getDelegatorDelegationsPaged(mixnetContractAddress, delegator, limit, startAfter);
-  }
-
-  getDelegationDetails(mixnetContractAddress: string, mixIdentity: string, delegator: string): Promise<Delegation> {
-    return this.nymdQuerier.getDelegationDetails(mixnetContractAddress, mixIdentity, delegator);
-  }
-
-  getLayerDistribution(mixnetContractAddress: string): Promise<LayerDistribution> {
-    return this.nymdQuerier.getLayerDistribution(mixnetContractAddress);
-  }
-
-  getRewardPool(mixnetContractAddress: string): Promise<string> {
-    return this.nymdQuerier.getRewardPool(mixnetContractAddress);
-  }
-
-  getCirculatingSupply(mixnetContractAddress: string): Promise<string> {
-    return this.nymdQuerier.getCirculatingSupply(mixnetContractAddress);
-  }
-
-  getEpochRewardPercent(mixnetContractAddress: string): Promise<number> {
-    return this.nymdQuerier.getEpochRewardPercent(mixnetContractAddress);
-  }
-
-  getSybilResistancePercent(mixnetContractAddress: string): Promise<number> {
-    return this.nymdQuerier.getSybilResistancePercent(mixnetContractAddress);
-  }
-
-  getRewardingStatus(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    rewardingIntervalNonce: number,
-  ): Promise<RewardingStatus> {
-    return this.nymdQuerier.getRewardingStatus(mixnetContractAddress, mixIdentity, rewardingIntervalNonce);
-  }
-
-  getCachedGateways(): Promise<GatewayBond[]> {
-    return this.validatorApiQuerier.getCachedGateways();
-  }
-
-  getCachedMixnodes(): Promise<MixNodeBond[]> {
-    return this.validatorApiQuerier.getCachedMixnodes();
-  }
-
-  getActiveMixnodes(): Promise<MixNodeBond[]> {
-    return this.validatorApiQuerier.getActiveMixnodes();
-  }
-
-  getRewardedMixnodes(): Promise<MixNodeBond[]> {
-    return this.validatorApiQuerier.getRewardedMixnodes();
-  }
+    async changeValidator(url: string): Promise<void> {
+        this.cosmClient = await CosmWasmClient.connect(url)
+    }
+
+    public getMixNodes(contractAddress: string, limit: number, start_after?: string): Promise<PagedMixnodeResponse> {
+        if (start_after == undefined) { // TODO: check if we can take this out, I'm not sure what will happen if we send an "undefined" so I'm playing it safe here.
+            return this.cosmClient.queryContractSmart(contractAddress, {get_mix_nodes: {limit}});
+        } else {
+            return this.cosmClient.queryContractSmart(contractAddress, {get_mix_nodes: {limit, start_after}});
+        }
+    }
+
+    public getGateways(contractAddress: string, limit: number, start_after?: string): Promise<PagedGatewayResponse> {
+        if (start_after == undefined) { // TODO: check if we can take this out, I'm not sure what will happen if we send an "undefined" so I'm playing it safe here.
+            return this.cosmClient.queryContractSmart(contractAddress, {get_gateways: {limit}});
+        } else {
+            return this.cosmClient.queryContractSmart(contractAddress, {get_gateways: {limit, start_after}});
+        }
+    }
+
+    public getMixDelegations(contractAddress: string, mixIdentity: string, limit: number, start_after?: string): Promise<PagedMixDelegationsResponse> {
+        if (start_after == undefined) { // TODO: check if we can take this out, I'm not sure what will happen if we send an "undefined" so I'm playing it safe here.
+            return this.cosmClient.queryContractSmart(contractAddress, {
+                get_mix_delegations: {
+                    mix_identity: mixIdentity,
+                    limit
+                }
+            });
+        } else {
+            return this.cosmClient.queryContractSmart(contractAddress, {
+                get_mix_delegations: {
+                    mix_identity: mixIdentity,
+                    limit,
+                    start_after
+                }
+            });
+        }
+    }
+
+    public getMixDelegation(contractAddress: string, mixIdentity: string, delegatorAddress: string): Promise<Delegation> {
+        return this.cosmClient.queryContractSmart(contractAddress, {
+            get_mix_delegation: {
+                mix_identity: mixIdentity,
+                address: delegatorAddress
+            }
+        });
+    }
+
+    public getGatewayDelegations(contractAddress: string, gatewayIdentity: string, limit: number, start_after?: string): Promise<PagedGatewayDelegationsResponse> {
+        if (start_after == undefined) { // TODO: check if we can take this out, I'm not sure what will happen if we send an "undefined" so I'm playing it safe here.
+            return this.cosmClient.queryContractSmart(contractAddress, {
+                get_gateway_delegations: {
+                    gateway_identity: gatewayIdentity,
+                    limit
+                }
+            });
+        } else {
+            return this.cosmClient.queryContractSmart(contractAddress, {
+                get_gateway_delegations: {
+                    gateway_identity: gatewayIdentity,
+                    limit,
+                    start_after
+                }
+            });
+        }
+    }
+
+    public getGatewayDelegation(contractAddress: string, gatewayIdentity: string, delegatorAddress: string): Promise<Delegation> {
+        return this.cosmClient.queryContractSmart(contractAddress, {
+            get_gateway_delegation: {
+                gateway_identity: gatewayIdentity,
+                address: delegatorAddress
+            }
+        });
+    }
+
+    public ownsMixNode(contractAddress: string, address: string): Promise<MixOwnershipResponse> {
+        return this.cosmClient.queryContractSmart(contractAddress, {owns_mixnode: {address}});
+    }
+
+    public ownsGateway(contractAddress: string, address: string): Promise<GatewayOwnershipResponse> {
+        return this.cosmClient.queryContractSmart(contractAddress, {owns_gateway: {address}});
+    }
+
+    public getBalance(address: string, stakeDenom: string): Promise<Coin | null> {
+        return this.cosmClient.getBalance(address, stakeDenom);
+    }
+
+    public getStateParams(contractAddress: string): Promise<StateParams> {
+        return this.cosmClient.queryContractSmart(contractAddress, {state_params: {}});
+    }
 }
@@ -1,467 +0,0 @@
-import {
-  ExecuteResult,
-  InstantiateOptions,
-  InstantiateResult,
-  MigrateResult,
-  SigningCosmWasmClient,
-  SigningCosmWasmClientOptions,
-  UploadResult,
-} from '@cosmjs/cosmwasm-stargate';
-import { DirectSecp256k1HdWallet, EncodeObject } from '@cosmjs/proto-signing';
-import { Coin, DeliverTxResponse, SignerData, StdFee } from '@cosmjs/stargate';
-import { Tendermint34Client } from '@cosmjs/tendermint-rpc';
-import { ChangeAdminResult } from '@cosmjs/cosmwasm-stargate/build/signingcosmwasmclient';
-import { TxRaw } from 'cosmjs-types/cosmos/tx/v1beta1/tx';
-import { nymGasPrice } from './stargate-helper';
-import { IQueryClient } from './query-client';
-import NymdQuerier from './nymd-querier';
-import {
-  ContractStateParams,
-  Delegation,
-  Gateway,
-  GatewayBond,
-  GatewayOwnershipResponse,
-  LayerDistribution,
-  MixnetContractVersion,
-  MixNode,
-  MixNodeBond,
-  MixOwnershipResponse,
-  PagedAllDelegationsResponse,
-  PagedDelegatorDelegationsResponse,
-  PagedGatewayResponse,
-  PagedMixDelegationsResponse,
-  PagedMixnodeResponse,
-  RewardingIntervalResponse,
-  RewardingStatus,
-} from './types';
-import ValidatorApiQuerier from './validator-api-querier';
-
-// methods exposed by `SigningCosmWasmClient`
-export interface ICosmWasmSigning {
-  simulate(signerAddress: string, messages: readonly EncodeObject[], memo: string | undefined): Promise<number>;
-
-  upload(
-    senderAddress: string,
-    wasmCode: Uint8Array,
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<UploadResult>;
-
-  instantiate(
-    senderAddress: string,
-    codeId: number,
-    msg: Record<string, unknown>,
-    label: string,
-    fee: StdFee | 'auto' | number,
-    options?: InstantiateOptions,
-  ): Promise<InstantiateResult>;
-
-  updateAdmin(
-    senderAddress: string,
-    contractAddress: string,
-    newAdmin: string,
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<ChangeAdminResult>;
-
-  clearAdmin(
-    senderAddress: string,
-    contractAddress: string,
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<ChangeAdminResult>;
-
-  migrate(
-    senderAddress: string,
-    contractAddress: string,
-    codeId: number,
-    migrateMsg: Record<string, unknown>,
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<MigrateResult>;
-
-  execute(
-    senderAddress: string,
-    contractAddress: string,
-    msg: Record<string, unknown>,
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-    funds?: readonly Coin[],
-  ): Promise<ExecuteResult>;
-
-  sendTokens(
-    senderAddress: string,
-    recipientAddress: string,
-    amount: readonly Coin[],
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<DeliverTxResponse>;
-
-  delegateTokens(
-    delegatorAddress: string,
-    validatorAddress: string,
-    amount: Coin,
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<DeliverTxResponse>;
-
-  undelegateTokens(
-    delegatorAddress: string,
-    validatorAddress: string,
-    amount: Coin,
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<DeliverTxResponse>;
-
-  withdrawRewards(
-    delegatorAddress: string,
-    validatorAddress: string,
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<DeliverTxResponse>;
-
-  signAndBroadcast(
-    signerAddress: string,
-    messages: readonly EncodeObject[],
-    fee: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<DeliverTxResponse>;
-
-  sign(
-    signerAddress: string,
-    messages: readonly EncodeObject[],
-    fee: StdFee,
-    memo: string,
-    explicitSignerData?: SignerData,
-  ): Promise<TxRaw>;
-}
-
-export interface INymSigning {
-  clientAddress: string;
-}
-
-export interface ISigningClient extends IQueryClient, ICosmWasmSigning, INymSigning {
-  bondMixNode(
-    mixnetContractAddress: string,
-    mixNode: MixNode,
-    ownerSignature: string,
-    pledge: Coin,
-    fee?: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<ExecuteResult>;
-
-  unbondMixNode(mixnetContractAddress: string, fee?: StdFee | 'auto' | number, memo?: string): Promise<ExecuteResult>;
-
-  bondGateway(
-    mixnetContractAddress: string,
-    gateway: Gateway,
-    ownerSignature: string,
-    pledge: Coin,
-    fee?: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<ExecuteResult>;
-
-  unbondGateway(mixnetContractAddress: string, fee?: StdFee | 'auto' | number, memo?: string): Promise<ExecuteResult>;
-
-  delegateToMixNode(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    amount: Coin,
-    fee?: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<ExecuteResult>;
-
-  undelegateFromMixNode(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    fee?: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<ExecuteResult>;
-
-  updateContractStateParams(
-    mixnetContractAddress: string,
-    newParams: ContractStateParams,
-    fee?: StdFee | 'auto' | number,
-    memo?: string,
-  ): Promise<ExecuteResult>;
-
-  // I don't see any point in exposing rewarding / vesting-related (INSIDE mixnet contract, like "BondMixnodeOnBehalf")
-  // functionalities in our typescript client. However, if for some reason, we find we need them
-  // they're rather trivial to add.
-}
-
-export default class SigningClient extends SigningCosmWasmClient implements ISigningClient {
-  private nymdQuerier: NymdQuerier;
-
-  private validatorApiQuerier: ValidatorApiQuerier;
-
-  clientAddress: string;
-
-  private constructor(
-    clientAddress: string,
-    validatorApiUrl: string,
-    tmClient: Tendermint34Client,
-    wallet: DirectSecp256k1HdWallet,
-    signerOptions: SigningCosmWasmClientOptions,
-  ) {
-    super(tmClient, wallet, signerOptions);
-    this.clientAddress = clientAddress;
-    this.nymdQuerier = new NymdQuerier(this);
-    this.validatorApiQuerier = new ValidatorApiQuerier(validatorApiUrl);
-  }
-
-  public static async connectWithNymSigner(
-    wallet: DirectSecp256k1HdWallet,
-    nymdUrl: string,
-    validatorApiUrl: string,
-    prefix: string,
-  ): Promise<SigningClient> {
-    const [{ address }] = await wallet.getAccounts();
-    const signerOptions: SigningCosmWasmClientOptions = {
-      gasPrice: nymGasPrice(prefix),
-    };
-    const tmClient = await Tendermint34Client.connect(nymdUrl);
-    return new SigningClient(address, validatorApiUrl, tmClient, wallet, signerOptions);
-  }
-
-  // query related:
-
-  getContractVersion(mixnetContractAddress: string): Promise<MixnetContractVersion> {
-    return this.nymdQuerier.getContractVersion(mixnetContractAddress);
-  }
-
-  getMixNodesPaged(mixnetContractAddress: string, limit?: number, startAfter?: string): Promise<PagedMixnodeResponse> {
-    return this.nymdQuerier.getMixNodesPaged(mixnetContractAddress, limit, startAfter);
-  }
-
-  getGatewaysPaged(mixnetContractAddress: string, limit?: number, startAfter?: string): Promise<PagedGatewayResponse> {
-    return this.nymdQuerier.getGatewaysPaged(mixnetContractAddress, limit, startAfter);
-  }
-
-  ownsMixNode(mixnetContractAddress: string, address: string): Promise<MixOwnershipResponse> {
-    return this.nymdQuerier.ownsMixNode(mixnetContractAddress, address);
-  }
-
-  ownsGateway(mixnetContractAddress: string, address: string): Promise<GatewayOwnershipResponse> {
-    return this.nymdQuerier.ownsGateway(mixnetContractAddress, address);
-  }
-
-  getStateParams(mixnetContractAddress: string): Promise<ContractStateParams> {
-    return this.nymdQuerier.getStateParams(mixnetContractAddress);
-  }
-
-  getCurrentRewardingInterval(mixnetContractAddress: string): Promise<RewardingIntervalResponse> {
-    return this.nymdQuerier.getCurrentRewardingInterval(mixnetContractAddress);
-  }
-
-  getAllNetworkDelegationsPaged(
-    mixnetContractAddress: string,
-    limit?: number,
-    startAfter?: [string, string],
-  ): Promise<PagedAllDelegationsResponse> {
-    return this.nymdQuerier.getAllNetworkDelegationsPaged(mixnetContractAddress, limit, startAfter);
-  }
-
-  getMixNodeDelegationsPaged(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    limit?: number,
-    startAfter?: string,
-  ): Promise<PagedMixDelegationsResponse> {
-    return this.nymdQuerier.getMixNodeDelegationsPaged(mixnetContractAddress, mixIdentity, limit, startAfter);
-  }
-
-  getDelegatorDelegationsPaged(
-    mixnetContractAddress: string,
-    delegator: string,
-    limit?: number,
-    startAfter?: string,
-  ): Promise<PagedDelegatorDelegationsResponse> {
-    return this.nymdQuerier.getDelegatorDelegationsPaged(mixnetContractAddress, delegator, limit, startAfter);
-  }
-
-  getDelegationDetails(mixnetContractAddress: string, mixIdentity: string, delegator: string): Promise<Delegation> {
-    return this.nymdQuerier.getDelegationDetails(mixnetContractAddress, mixIdentity, delegator);
-  }
-
-  getLayerDistribution(mixnetContractAddress: string): Promise<LayerDistribution> {
-    return this.nymdQuerier.getLayerDistribution(mixnetContractAddress);
-  }
-
-  getRewardPool(mixnetContractAddress: string): Promise<string> {
-    return this.nymdQuerier.getRewardPool(mixnetContractAddress);
-  }
-
-  getCirculatingSupply(mixnetContractAddress: string): Promise<string> {
-    return this.nymdQuerier.getCirculatingSupply(mixnetContractAddress);
-  }
-
-  getEpochRewardPercent(mixnetContractAddress: string): Promise<number> {
-    return this.nymdQuerier.getEpochRewardPercent(mixnetContractAddress);
-  }
-
-  getSybilResistancePercent(mixnetContractAddress: string): Promise<number> {
-    return this.nymdQuerier.getSybilResistancePercent(mixnetContractAddress);
-  }
-
-  getRewardingStatus(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    rewardingIntervalNonce: number,
-  ): Promise<RewardingStatus> {
-    return this.nymdQuerier.getRewardingStatus(mixnetContractAddress, mixIdentity, rewardingIntervalNonce);
-  }
-
-  getCachedGateways(): Promise<GatewayBond[]> {
-    return this.validatorApiQuerier.getCachedGateways();
-  }
-
-  getCachedMixnodes(): Promise<MixNodeBond[]> {
-    return this.validatorApiQuerier.getCachedMixnodes();
-  }
-
-  getActiveMixnodes(): Promise<MixNodeBond[]> {
-    return this.validatorApiQuerier.getActiveMixnodes();
-  }
-
-  getRewardedMixnodes(): Promise<MixNodeBond[]> {
-    return this.validatorApiQuerier.getRewardedMixnodes();
-  }
-
-  // signing related:
-
-  bondMixNode(
-    mixnetContractAddress: string,
-    mixNode: MixNode,
-    ownerSignature: string,
-    pledge: Coin,
-    fee: StdFee | 'auto' | number = 'auto',
-    memo = 'Default MixNode Bonding from Typescript',
-  ): Promise<ExecuteResult> {
-    return this.execute(
-      this.clientAddress,
-      mixnetContractAddress,
-      {
-        bond_mixnode: {
-          mix_node: mixNode,
-          owner_signature: ownerSignature,
-        },
-      },
-      fee,
-      memo,
-      [pledge],
-    );
-  }
-
-  unbondMixNode(
-    mixnetContractAddress: string,
-    fee: StdFee | 'auto' | number = 'auto',
-    memo = 'Default MixNode Unbonding from Typescript',
-  ): Promise<ExecuteResult> {
-    return this.execute(
-      this.clientAddress,
-      mixnetContractAddress,
-      {
-        unbond_mixnode: {},
-      },
-      fee,
-      memo,
-    );
-  }
-
-  bondGateway(
-    mixnetContractAddress: string,
-    gateway: Gateway,
-    ownerSignature: string,
-    pledge: Coin,
-    fee: StdFee | 'auto' | number = 'auto',
-    memo = 'Default Gateway Bonding from Typescript',
-  ): Promise<ExecuteResult> {
-    return this.execute(
-      this.clientAddress,
-      mixnetContractAddress,
-      {
-        bond_gateway: {
-          gateway,
-          owner_signature: ownerSignature,
-        },
-      },
-      fee,
-      memo,
-      [pledge],
-    );
-  }
-
-  unbondGateway(
-    mixnetContractAddress: string,
-    fee: StdFee | 'auto' | number = 'auto',
-    memo = 'Default Gateway Unbonding from Typescript',
-  ): Promise<ExecuteResult> {
-    return this.execute(
-      this.clientAddress,
-      mixnetContractAddress,
-      {
-        unbond_gateway: {},
-      },
-      fee,
-      memo,
-    );
-  }
-
-  delegateToMixNode(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    amount: Coin,
-    fee: StdFee | 'auto' | number = 'auto',
-    memo = 'Default MixNode Delegation from Typescript',
-  ): Promise<ExecuteResult> {
-    return this.execute(
-      this.clientAddress,
-      mixnetContractAddress,
-      {
-        delegate_to_mixnode: {
-          mix_identity: mixIdentity,
-        },
-      },
-      fee,
-      memo,
-      [amount],
-    );
-  }
-
-  undelegateFromMixNode(
-    mixnetContractAddress: string,
-    mixIdentity: string,
-    fee: StdFee | 'auto' | number = 'auto',
-    memo = 'Default MixNode Undelegation from Typescript',
-  ): Promise<ExecuteResult> {
-    return this.execute(
-      this.clientAddress,
-      mixnetContractAddress,
-      {
-        undelegate_from_mixnode: {
-          mix_identity: mixIdentity,
-        },
-      },
-      fee,
-      memo,
-    );
-  }
-
-  updateContractStateParams(
-    mixnetContractAddress: string,
-    newParams: ContractStateParams,
-    fee: StdFee | 'auto' | number = 'auto',
-    memo = 'Default Contract State Params Update from Typescript',
-  ): Promise<ExecuteResult> {
-    return this.execute(
-      this.clientAddress,
-      mixnetContractAddress,
-      {
-        update_contract_state_params: newParams,
-      },
-      fee,
-      memo,
-    );
-  }
-}
@@ -1,14 +1,26 @@
-import axios from 'axios';
-import { GasPrice } from '@cosmjs/stargate';
+import axios from "axios";
+import { GasLimits, GasPrice } from "@cosmjs/stargate";
+import { CosmWasmFeeTable, defaultGasLimits } from "@cosmjs/cosmwasm-stargate";
+
+export const nymGasLimits: GasLimits<CosmWasmFeeTable> = {
+    ...defaultGasLimits,
+    upload: 2_500_000,
+    init: 500_000,
+    migrate: 200_000,
+    exec: 250_000,
+    send: 80_000,
+    changeAdmin: 80_000,
+};

 export function nymGasPrice(prefix: string): GasPrice {
-  return GasPrice.fromString(`0.025u${prefix}`); // TODO: ideally this ugly conversion shouldn't be hardcoded here.
+    return GasPrice.fromString(`0.025u${prefix}`); // TODO: ideally this ugly conversion shouldn't be hardcoded here.
 }

 export const downloadWasm = async (url: string): Promise<Uint8Array> => {
-  const r = await axios.get(url, { responseType: 'arraybuffer' });
-  if (r.status !== 200) {
-    throw new Error(`Download error: ${r.status}`);
-  }
-  return r.data;
+    const r = await axios.get(url, {responseType: "arraybuffer"});
+    if (r.status !== 200) {
+        throw new Error(`Download error: ${r.status}`);
+    }
+    return r.data;
 };
+
@@ -1,162 +1,125 @@
-import { Coin } from '@cosmjs/stargate';
+import { Coin } from "@cosmjs/stargate";

-// TODO: ideally we'd have re-exported those using that fancy crate that builds ts types from rust
-
-export type MixnetContractVersion = {
-  build_timestamp: string;
-  build_version: string;
-  commit_sha: string;
-  commit_timestamp: string;
-  commit_branch: string;
-  rustc_version: string;
-};

+/// One page of a possible multi-page set of mixnodes. The paging interface is quite
+/// inconvenient, as we don't have the two pieces of information we need to know
+/// in order to do paging nicely (namely `currentPage` and `totalPages` parameters).
+///
+/// Instead, we have only `start_next_page_after`, i.e. the key of the last record
+/// on this page. In order to get the *next* page, CosmWasm looks at that value,
+/// finds the next record, and builds the next page starting there. This happens
+/// **in series** rather than **in parallel** (!).
+///
+/// So we have some consistency problems:
+///
+/// * we can't make requests at a given block height, so the result set
+///    which we assemble over time may change while requests are being made.
+/// * at some point we will make a request for a `start_next_page_after` key
+///   which has just been deleted from the database.
+///
+/// TODO: more robust error handling on the "deleted key" case.
 export type PagedMixnodeResponse = {
-  nodes: MixNodeBond[];
-  per_page: number;
-  start_next_after?: string;
-};
-
-export type PagedGatewayResponse = {
-  nodes: GatewayBond[];
-  per_page: number;
-  start_next_after?: string;
-};
-
-export type MixOwnershipResponse = {
-  address: string;
-  mixnode?: MixNodeBond;
-};
-
-export type GatewayOwnershipResponse = {
-  address: string;
-  gateway?: GatewayBond;
-};
-
-export type ContractStateParams = {
-  // ideally I'd want to define those as `number` rather than `string`, but
-  // rust-side they are defined as Uint128 and that don't have
-  // native javascript representations and therefore are interpreted as strings after deserialization
-  minimum_mixnode_pledge: string;
-  minimum_gateway_pledge: string;
-  mixnode_rewarded_set_size: number;
-  mixnode_active_set_size: number;
-};
-
-export type RewardingIntervalResponse = {
-  current_rewarding_interval_starting_block: number;
-  current_rewarding_interval_nonce: number;
-  rewarding_in_progress: boolean;
-};
-
-export type LayerDistribution = {
-  gateways: number;
-  layer1: number;
-  layer2: number;
-  layer3: number;
-};
-
-export type Delegation = {
-  owner: string;
-  node_identity: string;
-  amount: Coin;
-  block_height: number;
-  proxy?: string;
-};
-
-export type PagedMixDelegationsResponse = {
-  delegations: Delegation[];
-  start_next_after?: string;
-};
-
-export type PagedDelegatorDelegationsResponse = {
-  delegations: Delegation[];
-  start_next_after?: string;
-};
-
-export type PagedAllDelegationsResponse = {
-  delegations: Delegation[];
-  start_next_after?: [string, string];
-};
-
-export type RewardingResult = {
-  operator_reward: string;
-  total_delegator_reward: string;
-};
-
-export type NodeRewardParams = {
-  period_reward_pool: string;
-  k: string;
-  reward_blockstamp: number;
-  circulating_supply: string;
-  uptime: string;
-  sybil_resistance_percent: number;
-};
-
-export type DelegatorRewardParams = {
-  node_reward_params: NodeRewardParams;
-  sigma: number;
-  profit_margin: number;
-  node_profit: number;
-};
-
-export type PendingDelegatorRewarding = {
-  running_results: RewardingResult;
-  next_start: string;
-  rewarding_params: DelegatorRewardParams;
-};
-
-export type RewardingStatus = { Complete: RewardingResult } | { PendingNextDelegatorPage: PendingDelegatorRewarding };
-
-export type MixnodeRewardingStatusResponse = {
-  status?: RewardingStatus;
-};
-
-export enum Layer {
-  Gateway,
-  One,
-  Two,
-  Three,
+    nodes: MixNodeBond[],
+    per_page: number, // TODO: camelCase
+    start_next_after: string, // TODO: camelCase
 }

-export type MixNodeBond = {
-  owner: string;
-  mix_node: MixNode;
-  layer: Layer;
-  bond_amount: Coin;
-  total_delegation: Coin;
-};
+// a temporary way of achieving the same paging behaviour for the gateways
+// the same points made for `PagedResponse` stand here.
+export type PagedGatewayResponse = {
+    nodes: GatewayBond[],
+    per_page: number, // TODO: camelCase
+    start_next_after: string, // TODO: camelCase
+}
+
+export type MixOwnershipResponse = {
+    address: string,
+    has_node: boolean,
+}
+
+export type GatewayOwnershipResponse = {
+    address: string,
+    has_gateway: boolean,
+}
+
+export type StateParams = {
+    epoch_length: number,
+    // ideally I'd want to define those as `number` rather than `string`, but
+    // rust-side they are defined as Uint128 and Decimal that don't have
+    // native javascript representations and therefore are interpreted as strings after deserialization
+    minimum_mixnode_bond: string,
+    minimum_gateway_bond: string,
+    mixnode_bond_reward_rate: string,
+    gateway_bond_reward_rate: string,
+    mixnode_delegation_reward_rate: string,
+    gateway_delegation_reward_rate: string,
+    mixnode_active_set_size: number,
+    gateway_active_set_size: number,
+}
+
+export type Delegation = {
+    owner: string,
+    amount: Coin,
+}
+
+export type PagedMixDelegationsResponse = {
+    node_owner: string,
+    delegations: Delegation[],
+    start_next_after: string
+}
+
+export type PagedGatewayDelegationsResponse = {
+    node_owner: string,
+    delegations: Delegation[],
+    start_next_after: string
+}
+
+
+export enum Layer {
+    Gateway,
+    One,
+    Two,
+    Three,
+}
+
+export type MixNodeBond = { // TODO: change name to MixNodeBond
+    owner: string,
+    mix_node: MixNode,    // TODO: camelCase this later once everything else works
+    layer: Layer,
+    bond_amount: Coin,
+    total_delegation: Coin,
+}

 export type MixNode = {
-  host: string;
-  mix_port: number;
-  verloc_port: number;
-  http_api_port: number;
-  sphinx_key: string;
-  identity_key: string;
-  version: string;
-};
+    host: string,
+    mix_port: number,
+    verloc_port: number,
+    http_api_port: number,
+    sphinx_key: string, // TODO: camelCase this later once everything else works
+    identity_key: string,
+    version: string,
+}

 export type GatewayBond = {
-  owner: string;
-  gateway: Gateway;
-
-  bond_amount: Coin;
-  total_delegation: Coin;
-};
+    owner: string
+    gateway: Gateway,
+    
+    bond_amount: Coin,
+    total_delegation: Coin,
+}

 export type Gateway = {
-  host: string;
-  mix_port: number;
-  clients_port: number;
-  location: string;
-  sphinx_key: string;
-  identity_key: string;
-  version: string;
-};
+    host: string,
+    mix_port: number,
+    clients_port: number,
+    location: string,
+    sphinx_key: string,
+    identity_key: string,
+    version: string
+}

 export type SendRequest = {
-  senderAddress: string;
-  recipientAddress: string;
-  transferAmount: readonly Coin[];
-};
+    senderAddress: string,
+    recipientAddress: string,
+    transferAmount: readonly Coin[]
+}
@@ -1,18 +1,14 @@
 // eslint-disable-next-line @typescript-eslint/no-explicit-any,@typescript-eslint/explicit-module-boundary-types
-import { Coin } from '@cosmjs/stargate';
-import { EncodeObject } from '@cosmjs/proto-signing';
+import { Coin } from "@cosmjs/stargate";
+import { EncodeObject } from "@cosmjs/proto-signing";

-export function makeBankMsgSend(
-  senderAddress: string,
-  recipientAddress: string,
-  transferAmount: readonly Coin[],
-): EncodeObject {
-  return {
-    typeUrl: '/cosmos.bank.v1beta1.MsgSend',
-    value: {
-      fromAddress: senderAddress,
-      toAddress: recipientAddress,
-      amount: transferAmount,
-    },
-  };
-}
+export function makeBankMsgSend(senderAddress: string, recipientAddress: string, transferAmount: readonly Coin[]): EncodeObject {
+    return {
+        typeUrl: "/cosmos.bank.v1beta1.MsgSend",
+        value: {
+            fromAddress: senderAddress,
+            toAddress: recipientAddress,
+            amount: transferAmount,
+        },
+    };
+}
@@ -1,75 +0,0 @@
-/*
- * Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import axios from 'axios';
-import { GatewayBond, MixNodeBond } from './types';
-
-export const VALIDATOR_API_VERSION = '/v1';
-export const VALIDATOR_API_GATEWAYS_PATH = `${VALIDATOR_API_VERSION}/gateways`;
-export const VALIDATOR_API_MIXNODES_PATH = `${VALIDATOR_API_VERSION}/mixnodes`;
-export const VALIDATOR_API_ACTIVE_MIXNODES_PATH = `${VALIDATOR_API_VERSION}/mixnodes/active`;
-export const VALIDATOR_API_REWARDED_MIXNODES_PATH = `${VALIDATOR_API_VERSION}/mixnodes/rewarded`;
-
-export interface IValidatorApiQuery {
-  getCachedMixnodes(): Promise<MixNodeBond[]>;
-
-  getCachedGateways(): Promise<GatewayBond[]>;
-
-  getActiveMixnodes(): Promise<MixNodeBond[]>;
-
-  getRewardedMixnodes(): Promise<MixNodeBond[]>;
-}
-
-export default class ValidatorApiQuerier implements IValidatorApiQuery {
-  validatorApiUrl: string;
-
-  constructor(validatorApiUrl: string) {
-    this.validatorApiUrl = validatorApiUrl;
-  }
-
-  async getCachedMixnodes(): Promise<MixNodeBond[]> {
-    const url = new URL(this.validatorApiUrl);
-    url.pathname += VALIDATOR_API_MIXNODES_PATH;
-
-    const response = await axios.get(url.toString());
-    if (response.status === 200) {
-      return response.data;
-    }
-    throw new Error('None of the provided validator APIs seem to be alive');
-  }
-
-  async getCachedGateways(): Promise<GatewayBond[]> {
-    const url = new URL(this.validatorApiUrl);
-    url.pathname += VALIDATOR_API_GATEWAYS_PATH;
-
-    const response = await axios.get(url.toString());
-    if (response.status === 200) {
-      return response.data;
-    }
-    throw new Error('None of the provided validator APIs seem to be alive');
-  }
-
-  async getActiveMixnodes(): Promise<MixNodeBond[]> {
-    const url = new URL(this.validatorApiUrl);
-    url.pathname += VALIDATOR_API_ACTIVE_MIXNODES_PATH;
-
-    const response = await axios.get(url.toString());
-    if (response.status === 200) {
-      return response.data;
-    }
-    throw new Error('None of the provided validator APIs seem to be alive');
-  }
-
-  async getRewardedMixnodes(): Promise<MixNodeBond[]> {
-    const url = new URL(this.validatorApiUrl);
-    url.pathname += VALIDATOR_API_REWARDED_MIXNODES_PATH;
-
-    const response = await axios.get(url.toString());
-    if (response.status === 200) {
-      return response.data;
-    }
-    throw new Error('None of the provided validator APIs seem to be alive');
-  }
-}
@@ -0,0 +1,100 @@
+import { assert } from "chai";
+import INetClient from "../../src/net-client";
+import { Fixtures } from "../fixtures"
+import { Mock, Times } from "moq.ts";
+import GatewaysCache from "../../src/caches/gateways";
+
+describe("Caching gateways: when the validator returns", () => {
+    context("an empty list", () => {
+        it("Should return an empty list", async () => {
+            const perPage = 100;
+            const contractAddress = "mockContractAddress";
+            const emptyPromise = Promise.resolve(Fixtures.GatewaysResp.empty());
+            const mockClient = new Mock<INetClient>().setup(netClient => netClient.getGateways(contractAddress, perPage, undefined)).returns(emptyPromise);
+            const cache = new GatewaysCache(mockClient.object(), perPage);
+
+            await cache.refreshGateways(contractAddress);
+
+            mockClient.verify(netClient => netClient.getGateways(contractAddress, perPage, undefined), Times.Exactly(1));
+            assert.deepEqual([], cache.gateways);
+        });
+    })
+
+    context("a list of gatways that fits in a page", () => {
+        it("Should return that one page list", async () => {
+            const perPage = 2;
+            const contractAddress = "mockContractAddress";
+            const onePagePromise = Promise.resolve(Fixtures.GatewaysResp.onePage());
+            const mockClient = new Mock<INetClient>().setup(netClient => netClient.getGateways(contractAddress, perPage, undefined)).returns(onePagePromise);
+            const cache = new GatewaysCache(mockClient.object(), perPage);
+
+            await cache.refreshGateways(contractAddress);
+
+            mockClient.verify(netClient => netClient.getGateways(contractAddress, perPage, undefined), Times.Exactly(1));
+            assert.deepEqual(Fixtures.Gateways.list2(), cache.gateways);
+        })
+    })
+
+    context("a list of gateways that is longer than one page", () => {
+        it("Should return the full list assembled from all pages", async () => {
+            const perPage = 2; // we get back 2 per page
+            const contractAddress = "mockContractAddress";
+            const fullPageResult = Fixtures.GatewaysResp.page1of2();
+            const halfPageResult = Fixtures.GatewaysResp.halfPage2of2();
+            const mockClient = new Mock<INetClient>()
+            mockClient.setup(instance => instance.getGateways(contractAddress, perPage, undefined)).returns(Promise.resolve(fullPageResult));
+            mockClient.setup(instance => instance.getGateways(contractAddress, perPage, fullPageResult.start_next_after)).returns(Promise.resolve(halfPageResult));
+            const cache = new GatewaysCache(mockClient.object(), perPage);
+
+            await cache.refreshGateways(contractAddress); // should make multiple paginated requests because there are two pages in the response fixture
+            mockClient.verify(instance => instance.getGateways(contractAddress, perPage, undefined), Times.Exactly(1));
+            mockClient.verify(instance => instance.getGateways(contractAddress, perPage, fullPageResult.start_next_after), Times.Exactly(1));
+
+            assert.deepEqual(Fixtures.Gateways.list3(), cache.gateways); // there are a total of 3 nodes in the validator lists, we get them all back
+        })
+    })
+
+    context("a list of gateways that is two filled pages", () => {
+        it("Should return the full list assembled from all pages", async () => {
+            const perPage = 2; // we get back 2 per page
+            const contractAddress = "mockContractAddress";
+            const fullPageResult1 = Fixtures.GatewaysResp.page1of2();
+            const fullPageResult2 = Fixtures.GatewaysResp.fullPage2of2();
+            const mockClient = new Mock<INetClient>()
+            mockClient.setup(netClient => netClient.getGateways(contractAddress, perPage, undefined)).returns(Promise.resolve(fullPageResult1));
+            mockClient.setup(netClient => netClient.getGateways(contractAddress, perPage, fullPageResult1.start_next_after)).returns(Promise.resolve(fullPageResult2));
+
+            const cache = new GatewaysCache(mockClient.object(), perPage);
+
+            await cache.refreshGateways(contractAddress); // should make multiple paginated requests because there are two pages in the response fixture
+            mockClient.verify(netClient => netClient.getGateways(contractAddress, perPage, undefined), Times.Exactly(1));
+            mockClient.verify(netClient => netClient.getGateways(contractAddress, perPage, fullPageResult1.start_next_after), Times.Exactly(1));
+
+            assert.deepEqual(Fixtures.Gateways.list4(), cache.gateways); // there are a total of 3 nodes in the validator lists, we get them all back
+        })
+    })
+
+    context("refreshing the cache twice", () => {
+        it("returns one full list assembled from all pages", async () => {
+            const perPage = 2; // we get back 2 per page
+            const contractAddress = "mockContractAddress";
+            const fullPageResult1 = Fixtures.GatewaysResp.page1of2();
+            const fullPageResult2 = Fixtures.GatewaysResp.fullPage2of2();
+            const mockClient = new Mock<INetClient>()
+            mockClient.setup(netClient => netClient.getGateways(contractAddress, perPage, undefined)).returns(Promise.resolve(fullPageResult1));
+            mockClient.setup(netClient => netClient.getGateways(contractAddress, perPage, fullPageResult1.start_next_after)).returns(Promise.resolve(fullPageResult2));
+
+            const cache = new GatewaysCache(mockClient.object(), perPage);
+
+            await cache.refreshGateways(contractAddress); // should make multiple paginated requests because there are two pages in the response fixture
+            mockClient.verify(netClient => netClient.getGateways(contractAddress, perPage, undefined), Times.Exactly(1));
+            mockClient.verify(netClient => netClient.getGateways(contractAddress, perPage, fullPageResult1.start_next_after), Times.Exactly(1));
+
+            await cache.refreshGateways(contractAddress);
+            mockClient.verify(netClient => netClient.getGateways(contractAddress, perPage, undefined), Times.Exactly(2));
+            mockClient.verify(netClient => netClient.getGateways(contractAddress, perPage, fullPageResult1.start_next_after), Times.Exactly(2));
+
+            assert.deepEqual(Fixtures.Gateways.list4(), cache.gateways); // there are a total of 3 nodes in the validator lists, we get them all back
+        })
+    })
+});
@@ -0,0 +1,96 @@
+import { assert } from "chai";
+import INetClient from "../../src/net-client";
+import { Fixtures } from "../fixtures"
+import { Mock, Times } from "moq.ts";
+import { MixnodesCache } from "../../src/caches/mixnodes"
+
+describe("Caching mixnodes: when the validator returns", () => {
+    context("an empty list", () => {
+        it("Should return an empty list", async () => {
+            const perPage = 100;
+            const contractAddress = "mockContractAddress";
+            const emptyPromise = Promise.resolve(Fixtures.MixNodesResp.empty());
+            const mockClient = new Mock<INetClient>().setup(netClient => netClient.getMixNodes(contractAddress, perPage, undefined)).returns(emptyPromise);
+            const cache = new MixnodesCache(mockClient.object(), perPage);
+
+            await cache.refreshMixNodes(contractAddress);
+
+            mockClient.verify(netClient => netClient.getMixNodes(contractAddress, perPage, undefined), Times.Exactly(1));
+            assert.deepEqual([], cache.mixNodes);
+        });
+    })
+    context("a list of nodes that fits in a page", () => {
+        it("Should return that one page list", async () => {
+            const perPage = 2;
+            const contractAddress = "mockContractAddress";
+            const onePagePromise = Promise.resolve(Fixtures.MixNodesResp.onePage());
+            const mockClient = new Mock<INetClient>().setup(netClient => netClient.getMixNodes(contractAddress, perPage, undefined)).returns(onePagePromise);
+            const cache = new MixnodesCache(mockClient.object(), perPage);
+
+            await cache.refreshMixNodes(contractAddress);
+
+            mockClient.verify(netClient => netClient.getMixNodes(contractAddress, perPage, undefined), Times.Exactly(1));
+            assert.deepEqual(Fixtures.MixNodes.list2(), cache.mixNodes);
+        })
+    })
+
+    context("a list of nodes that is longer than one page", () => {
+        it("Should return the full list assembled from all pages", async () => {
+            const perPage = 2; // we get back 2 per page
+            const contractAddress = "mockContractAddress";
+            const fullPageResult = Fixtures.MixNodesResp.page1of2();
+            const halfPageResult = Fixtures.MixNodesResp.halfPage2of2();
+            const mockClient = new Mock<INetClient>()
+            mockClient.setup(instance => instance.getMixNodes(contractAddress, perPage, undefined)).returns(Promise.resolve(fullPageResult));
+            mockClient.setup(instance => instance.getMixNodes(contractAddress, perPage, fullPageResult.start_next_after)).returns(Promise.resolve(halfPageResult));
+            const cache = new MixnodesCache(mockClient.object(), perPage);
+
+            await cache.refreshMixNodes(contractAddress); // should make multiple paginated requests because there are two pages in the response fixture
+            mockClient.verify(instance => instance.getMixNodes(contractAddress, perPage, undefined), Times.Exactly(1));
+            mockClient.verify(instance => instance.getMixNodes(contractAddress, perPage, fullPageResult.start_next_after), Times.Exactly(1));
+
+            assert.deepEqual(Fixtures.MixNodes.list3(), cache.mixNodes); // there are a total of 3 nodes in the validator lists, we get them all back
+        })
+    })
+
+    context("a list of nodes that is two filled pages", () => {
+        it("Should return the full list assembled from all pages", async () => {
+            const perPage = 2; // we get back 2 per page
+            const contractAddress = "mockContractAddress";
+            const fullPageResult1 = Fixtures.MixNodesResp.page1of2();
+            const fullPageResult2 = Fixtures.MixNodesResp.fullPage2of2();
+            const mockClient = new Mock<INetClient>()
+            mockClient.setup(netClient => netClient.getMixNodes(contractAddress, perPage, undefined)).returns(Promise.resolve(fullPageResult1));
+            mockClient.setup(netClient => netClient.getMixNodes(contractAddress, perPage, fullPageResult1.start_next_after)).returns(Promise.resolve(fullPageResult2));
+
+            const cache = new MixnodesCache(mockClient.object(), perPage);
+
+            await cache.refreshMixNodes(contractAddress); // should make multiple paginated requests because there are two pages in the response fixture
+            mockClient.verify(netClient => netClient.getMixNodes(contractAddress, perPage, undefined), Times.Exactly(1));
+            mockClient.verify(netClient => netClient.getMixNodes(contractAddress, perPage, fullPageResult1.start_next_after), Times.Exactly(1));
+
+            assert.deepEqual(Fixtures.MixNodes.list4(), cache.mixNodes); // there are a total of 3 nodes in the validator lists, we get them all back
+        })
+    })
+
+    context("refreshing the cache twice", () => {
+        it("returns one full list assembled from all pages", async () => {
+            const perPage = 2; // we get back 2 per page
+            const contractAddress = "mockContractAddress";
+            const fullPageResult1 = Fixtures.MixNodesResp.page1of2();
+            const fullPageResult2 = Fixtures.MixNodesResp.fullPage2of2();
+            const mockClient = new Mock<INetClient>()
+            mockClient.setup(netClient => netClient.getMixNodes(contractAddress, perPage, undefined)).returns(Promise.resolve(fullPageResult1));
+            mockClient.setup(netClient => netClient.getMixNodes(contractAddress, perPage, fullPageResult1.start_next_after)).returns(Promise.resolve(fullPageResult2));
+
+            const cache = new MixnodesCache(mockClient.object(), perPage);
+
+            await cache.refreshMixNodes(contractAddress); // should make multiple paginated requests because there are two pages in the response fixture
+            await cache.refreshMixNodes(contractAddress);
+            // mockClient.verify(netClient => netClient.getMixNodes(contractAddress, perPage, undefined), Times.Exactly(1));
+            // mockClient.verify(netClient => netClient.getMixNodes(contractAddress, perPage, fullPageResult1.start_next_after), Times.Exactly(1));
+
+            assert.deepEqual(Fixtures.MixNodes.list4(), cache.mixNodes); // there are a total of 3 nodes in the validator lists, we get them all back
+        })
+    })
+});
@@ -0,0 +1,156 @@
+import { coins } from "@cosmjs/launchpad";
+import {PagedGatewayResponse, PagedMixnodeResponse} from "../src/net-client";
+import {GatewayBond, MixNodeBond} from "../src/types"
+
+export namespace Fixtures {
+    export class MixNodes {
+        static single(): MixNodeBond {
+            return {
+                amount: coins(666, "unym"),
+                owner: "bob",
+                mix_node: {
+                    host: "1.1.1.1",
+                    layer: 1,
+                    location: "London, UK",
+                    sphinx_key: "foo",
+                    version: "0.10.0",
+                }
+            };
+        }
+
+        static list1(): MixNodeBond[] {
+            return [MixNodes.single()]
+        }
+
+        static list2(): MixNodeBond[] {
+            return [MixNodes.single(), MixNodes.single()]
+        }
+
+        static list3(): MixNodeBond[] {
+            return [MixNodes.single(), MixNodes.single(), MixNodes.single()]
+        }
+
+        static list4(): MixNodeBond[] {
+            return [MixNodes.single(), MixNodes.single(), MixNodes.single(), MixNodes.single()]
+        }
+    }
+
+    export class MixNodesResp {
+        static empty(): PagedResponse {
+            return {
+                nodes: [],
+                per_page: 2,
+                start_next_after: null,
+            }
+        }
+
+        static onePage(): PagedResponse {
+            return {
+                nodes: MixNodes.list2(),
+                per_page: 2,
+                start_next_after: null
+            }
+        }
+
+        static page1of2(): PagedResponse {
+            return {
+                nodes: MixNodes.list2(),
+                per_page: 2,
+                start_next_after: "2"
+            }
+        }
+
+        static halfPage2of2(): PagedResponse {
+            return {
+                nodes: MixNodes.list1(),
+                per_page: 2,
+                start_next_after: null
+
+            }
+        }
+
+        static fullPage2of2(): PagedResponse {
+            return {
+                nodes: MixNodes.list2(),
+                per_page: 2,
+                start_next_after: null,
+            }
+        }
+    }
+
+    export class Gateways {
+        static single(): GatewayBond {
+            return {
+                amount: coins(666, "unym"),
+                owner: "bob",
+                gateway: {
+                    mix_host: "1.1.1.1:1234",
+                    clients_host: "ws://1.1.1.1:1235",
+                    location: "London, UK",
+                    identity_key: "bar",
+                    sphinx_key: "foo",
+                    version: "0.10.0",
+                }
+            };
+        }
+
+        static list1(): GatewayBond[] {
+            return [Gateways.single()]
+        }
+
+        static list2(): GatewayBond[] {
+            return [Gateways.single(), Gateways.single()]
+        }
+
+        static list3(): GatewayBond[] {
+            return [Gateways.single(), Gateways.single(), Gateways.single()]
+        }
+
+        static list4(): GatewayBond[] {
+            return [Gateways.single(), Gateways.single(), Gateways.single(), Gateways.single()]
+        }
+    }
+
+    export class GatewaysResp {
+        static empty(): PagedGatewayResponse {
+            return {
+                nodes: [],
+                per_page: 2,
+                start_next_after: "",
+            }
+        }
+
+        static onePage(): PagedGatewayResponse {
+            return {
+                nodes: Gateways.list2(),
+                per_page: 2,
+                start_next_after: "",
+            }
+        }
+
+        static page1of2(): PagedGatewayResponse {
+            return {
+                nodes: Gateways.list2(),
+                per_page: 2,
+                start_next_after: "2"
+            }
+        }
+
+        static halfPage2of2(): PagedGatewayResponse {
+            return {
+                nodes: Gateways.list1(),
+                per_page: 2,
+                start_next_after: "",
+
+            }
+        }
+
+        static fullPage2of2(): PagedGatewayResponse {
+            return {
+                nodes: Gateways.list2(),
+                per_page: 2,
+                start_next_after: "",
+            }
+        }
+    }
+}
@@ -3,7 +3,6 @@

 use crypto::asymmetric::{encryption, identity};
 use futures::channel::mpsc;
-use gateway_client::bandwidth::BandwidthController;
 use gateway_client::GatewayClient;
 use nymsphinx::acknowledgements::AckKey;
 use nymsphinx::addressing::clients::Recipient;
@@ -18,6 +17,11 @@ use wasm_bindgen::prelude::*;
 use wasm_bindgen_futures::spawn_local;
 use wasm_utils::{console_log, console_warn};

+#[cfg(feature = "coconut")]
+use coconut_interface::Credential;
+#[cfg(feature = "coconut")]
+use credentials::{bandwidth::prepare_for_spending, obtain_aggregate_verification_key};
+
 pub(crate) mod received_processor;

 const DEFAULT_AVERAGE_PACKET_DELAY: Duration = Duration::from_millis(200);
@@ -99,15 +103,35 @@ impl NymClient {
        self.self_recipient().to_string()
    }

+    #[cfg(feature = "coconut")]
+    async fn prepare_coconut_credential(validators: &[Url], identity_bytes: &[u8]) -> Credential {
+        let verification_key = obtain_aggregate_verification_key(validators)
+            .await
+            .expect("could not obtain aggregate verification key of validators");
+
+        let bandwidth_credential =
+            credentials::bandwidth::obtain_signature(identity_bytes, validators)
+                .await
+                .expect("could not obtain bandwidth credential");
+        // the above would presumably be loaded from a file
+
+        // the below would only be executed once we know where we want to spend it (i.e. which gateway and stuff)
+        prepare_for_spending(identity_bytes, &bandwidth_credential, &verification_key)
+            .expect("could not prepare out bandwidth credential for spending")
+    }
+
    // Right now it's impossible to have async exported functions to take `&self` rather than self
    pub async fn initial_setup(self) -> Self {
        #[cfg(feature = "coconut")]
-        let bandwidth_controller = Some(BandwidthController::new(
-            vec![self.validator_server.clone()],
-            *self.identity.public_key(),
-        ));
-        #[cfg(not(feature = "coconut"))]
-        let bandwidth_controller = None;
+        let coconut_credential = {
+            let validator_server = self.validator_server.clone();
+            let identity_public_key = self.identity.public_key().clone();
+            Self::prepare_coconut_credential(
+                &vec![validator_server],
+                &identity_public_key.to_bytes(),
+            )
+            .await
+        };

        let mut client = self.get_and_update_topology().await;
        let gateway = client.choose_gateway();
@@ -123,11 +147,13 @@ impl NymClient {
            mixnet_messages_sender,
            ack_sender,
            DEFAULT_GATEWAY_RESPONSE_TIMEOUT,
-            bandwidth_controller,
        );

        gateway_client
-            .authenticate_and_start()
+            .authenticate_and_start(
+                #[cfg(feature = "coconut")]
+                Some(coconut_credential),
+            )
            .await
            .expect("could not authenticate and start up the gateway connection");

@@ -249,7 +275,7 @@ impl NymClient {
        let validator_client = validator_client::ApiClient::new(self.validator_server.clone());

        let mixnodes = match validator_client.get_cached_active_mixnodes().await {
-            Err(err) => panic!("{:?}", err),
+            Err(err) => panic!("{}", err),
            Ok(mixes) => mixes,
        };

@@ -10,19 +10,14 @@ edition = "2018"
 # TODO: (for this and other crates), similarly to 'tokio', import only required "futures" modules rather than
 # the entire crate
 futures = "0.3"
-json = "0.12.4"
 log = "0.4"
-thiserror = "1.0"
-url = "2.2"
 rand = { version = "0.7.3", features = ["wasm-bindgen"] }

 # internal
-credentials = { path = "../../credentials" }
 crypto = { path = "../../crypto" }
 gateway-requests = { path = "../../../gateway/gateway-requests" }
 nymsphinx = { path = "../../nymsphinx" }
 coconut-interface = { path = "../../coconut-interface", optional = true }
-network-defaults = { path = "../../network-defaults" }

 [dependencies.tungstenite]
 version = "0.13"
@@ -36,12 +31,6 @@ features = ["macros", "rt", "net", "sync", "time"]
 [target."cfg(not(target_arch = \"wasm32\"))".dependencies.tokio-tungstenite]
 version = "0.14"

-[target."cfg(not(target_arch = \"wasm32\"))".dependencies.secp256k1]
-version = "0.20.3"
-
-[target."cfg(not(target_arch = \"wasm32\"))".dependencies.web3]
-version = "0.17.0"
-
 # wasm-only dependencies
 [target."cfg(target_arch = \"wasm32\")".dependencies.wasm-bindgen]
 version = "0.2"
@@ -1,247 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-#[cfg(feature = "coconut")]
-use credentials::coconut::{
-    bandwidth::{
-        obtain_signature, prepare_for_spending, BandwidthVoucherAttributes, TOTAL_ATTRIBUTES,
-    },
-    utils::obtain_aggregate_verification_key,
-};
-#[cfg(not(feature = "coconut"))]
-use credentials::token::bandwidth::TokenCredential;
-#[cfg(not(feature = "coconut"))]
-use crypto::asymmetric::identity;
-use crypto::asymmetric::identity::PublicKey;
-use network_defaults::BANDWIDTH_VALUE;
-#[cfg(not(feature = "coconut"))]
-use network_defaults::{
-    eth_contract::ETH_JSON_ABI, ETH_BURN_FUNCTION_NAME, ETH_CONTRACT_ADDRESS, ETH_MIN_BLOCK_DEPTH,
-    TOKENS_TO_BURN,
-};
-#[cfg(not(feature = "coconut"))]
-use rand::rngs::OsRng;
-#[cfg(not(feature = "coconut"))]
-use secp256k1::SecretKey;
-#[cfg(not(feature = "coconut"))]
-use std::io::Write;
-#[cfg(not(feature = "coconut"))]
-use std::str::FromStr;
-#[cfg(not(feature = "coconut"))]
-use web3::{
-    contract::{Contract, Options},
-    transports::Http,
-    types::{Address, Bytes, U256, U64},
-    Web3,
-};
-
-use crate::error::GatewayClientError;
-
-#[cfg(not(feature = "coconut"))]
-pub fn eth_contract(web3: Web3<Http>) -> Contract<Http> {
-    Contract::from_json(
-        web3.eth(),
-        Address::from(ETH_CONTRACT_ADDRESS),
-        json::parse(ETH_JSON_ABI)
-            .expect("Invalid json abi")
-            .dump()
-            .as_bytes(),
-    )
-    .expect("Invalid json abi")
-}
-
-#[derive(Clone)]
-pub struct BandwidthController {
-    #[cfg(feature = "coconut")]
-    validator_endpoints: Vec<url::Url>,
-    #[cfg(feature = "coconut")]
-    identity: PublicKey,
-    #[cfg(not(feature = "coconut"))]
-    contract: Contract<Http>,
-    #[cfg(not(feature = "coconut"))]
-    eth_private_key: SecretKey,
-    #[cfg(not(feature = "coconut"))]
-    backup_bandwidth_token_keys_dir: std::path::PathBuf,
-}
-
-impl BandwidthController {
-    #[cfg(feature = "coconut")]
-    pub fn new(validator_endpoints: Vec<url::Url>, identity: PublicKey) -> Self {
-        BandwidthController {
-            validator_endpoints,
-            identity,
-        }
-    }
-
-    #[cfg(not(feature = "coconut"))]
-    pub fn new(
-        eth_endpoint: String,
-        eth_private_key: String,
-        backup_bandwidth_token_keys_dir: std::path::PathBuf,
-    ) -> Result<Self, GatewayClientError> {
-        // Fail early, on invalid url
-        let transport =
-            Http::new(&eth_endpoint).map_err(|_| GatewayClientError::InvalidURL(eth_endpoint))?;
-        let web3 = web3::Web3::new(transport);
-        // Fail early, on invalid abi
-        let contract = eth_contract(web3);
-        let eth_private_key = secp256k1::SecretKey::from_str(&eth_private_key)
-            .map_err(|_| GatewayClientError::InvalidEthereumPrivateKey)?;
-
-        Ok(BandwidthController {
-            contract,
-            eth_private_key,
-            backup_bandwidth_token_keys_dir,
-        })
-    }
-
-    #[cfg(not(feature = "coconut"))]
-    fn backup_keypair(&self, keypair: &identity::KeyPair) -> Result<(), GatewayClientError> {
-        std::fs::create_dir_all(&self.backup_bandwidth_token_keys_dir)?;
-        let file_path = self
-            .backup_bandwidth_token_keys_dir
-            .join(keypair.public_key().to_base58_string());
-        let mut file = std::fs::File::create(file_path)?;
-        file.write_all(&keypair.private_key().to_bytes())?;
-
-        Ok(())
-    }
-
-    #[cfg(feature = "coconut")]
-    pub async fn prepare_coconut_credential(
-        &self,
-    ) -> Result<coconut_interface::Credential, GatewayClientError> {
-        let verification_key = obtain_aggregate_verification_key(&self.validator_endpoints).await?;
-        let params = coconut_interface::Parameters::new(TOTAL_ATTRIBUTES).unwrap();
-
-        // TODO: Decide what is the value and additional info associated with the bandwidth voucher
-        let bandwidth_credential_attributes = BandwidthVoucherAttributes {
-            serial_number: params.random_scalar(),
-            binding_number: params.random_scalar(),
-            voucher_value: coconut_interface::hash_to_scalar(BANDWIDTH_VALUE.to_be_bytes()),
-            voucher_info: coconut_interface::hash_to_scalar(
-                String::from("BandwidthVoucher").as_bytes(),
-            ),
-        };
-
-        let bandwidth_credential = obtain_signature(
-            &params,
-            &bandwidth_credential_attributes,
-            &self.validator_endpoints,
-        )
-        .await?;
-        // the above would presumably be loaded from a file
-
-        // the below would only be executed once we know where we want to spend it (i.e. which gateway and stuff)
-        Ok(prepare_for_spending(
-            &self.identity.to_bytes(),
-            &bandwidth_credential,
-            &bandwidth_credential_attributes,
-            &verification_key,
-        )?)
-    }
-
-    #[cfg(not(feature = "coconut"))]
-    pub async fn prepare_token_credential(
-        &self,
-        gateway_identity: PublicKey,
-    ) -> Result<TokenCredential, GatewayClientError> {
-        let mut rng = OsRng;
-
-        let kp = identity::KeyPair::new(&mut rng);
-        self.backup_keypair(&kp)?;
-
-        let verification_key = *kp.public_key();
-        let signed_verification_key = kp.private_key().sign(&verification_key.to_bytes());
-        self.buy_token_credential(verification_key, signed_verification_key)
-            .await?;
-
-        let message: Vec<u8> = verification_key
-            .to_bytes()
-            .iter()
-            .chain(gateway_identity.to_bytes().iter())
-            .copied()
-            .collect();
-        let signature = kp.private_key().sign(&message);
-
-        Ok(TokenCredential::new(
-            verification_key,
-            gateway_identity,
-            BANDWIDTH_VALUE,
-            signature,
-        ))
-    }
-
-    #[cfg(not(feature = "coconut"))]
-    pub async fn buy_token_credential(
-        &self,
-        verification_key: PublicKey,
-        signed_verification_key: identity::Signature,
-    ) -> Result<(), GatewayClientError> {
-        // 0 means a transaction failure, 1 means success
-        let confirmations = if cfg!(debug_assertions) {
-            1
-        } else {
-            ETH_MIN_BLOCK_DEPTH
-        };
-        // 15 seconds per confirmation block + 10 seconds of network overhead
-        log::info!(
-            "Waiting for Ethereum transaction. This should take about {} seconds",
-            confirmations * 15 + 10
-        );
-        let recipt = self
-            .contract
-            .signed_call_with_confirmations(
-                ETH_BURN_FUNCTION_NAME,
-                (
-                    U256::from(TOKENS_TO_BURN),
-                    U256::from(&verification_key.to_bytes()),
-                    Bytes(signed_verification_key.to_bytes().to_vec()),
-                ),
-                Options::default(),
-                confirmations,
-                &self.eth_private_key,
-            )
-            .await?;
-        if Some(U64::from(0)) == recipt.status {
-            Err(GatewayClientError::BurnTokenError(
-                web3::Error::InvalidResponse(format!(
-                    "Transaction status is 0 (failure): {:?}",
-                    recipt.logs,
-                )),
-            ))
-        } else {
-            log::info!(
-                "Bought bandwidth on Ethereum: {} MB",
-                BANDWIDTH_VALUE / 1024 / 1024
-            );
-            Ok(())
-        }
-    }
-}
-
-#[cfg(not(feature = "coconut"))]
-#[cfg(test)]
-mod tests {
-    use network_defaults::ETH_EVENT_NAME;
-
-    use super::*;
-
-    #[test]
-    fn parse_contract() {
-        let transport =
-            Http::new("https://rinkeby.infura.io/v3/00000000000000000000000000000000").unwrap();
-        let web3 = web3::Web3::new(transport);
-        // test no panic occurs
-        eth_contract(web3);
-    }
-
-    #[test]
-    fn check_event_name_constant_against_abi() {
-        let transport =
-            Http::new("https://rinkeby.infura.io/v3/00000000000000000000000000000000").unwrap();
-        let web3 = web3::Web3::new(transport);
-        let contract = eth_contract(web3);
-        assert!(contract.abi().event(ETH_EVENT_NAME).is_ok());
-    }
-}
@@ -1,7 +1,6 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::bandwidth::BandwidthController;
 use crate::cleanup_socket_message;
 use crate::error::GatewayClientError;
 use crate::packet_router::PacketRouter;
@@ -9,10 +8,6 @@ pub use crate::packet_router::{
    AcknowledgementReceiver, AcknowledgementSender, MixnetMessageReceiver, MixnetMessageSender,
 };
 use crate::socket_state::{PartiallyDelegated, SocketState};
-#[cfg(feature = "coconut")]
-use coconut_interface::Credential;
-#[cfg(not(feature = "coconut"))]
-use credentials::token::bandwidth::TokenCredential;
 use crypto::asymmetric::identity;
 use futures::{FutureExt, SinkExt, StreamExt};
 use gateway_requests::authentication::encrypted_address::EncryptedAddressBytes;
@@ -35,11 +30,15 @@ use fluvio_wasm_timer as wasm_timer;
 #[cfg(target_arch = "wasm32")]
 use wasm_utils::websocket::JSWebsocket;

+#[cfg(feature = "coconut")]
+use coconut_interface::Credential;
+
 const DEFAULT_RECONNECTION_ATTEMPTS: usize = 10;
 const DEFAULT_RECONNECTION_BACKOFF: Duration = Duration::from_secs(5);

 pub struct GatewayClient {
    authenticated: bool,
+    #[cfg(feature = "coconut")]
    bandwidth_remaining: i64,
    gateway_address: String,
    gateway_identity: identity::PublicKey,
@@ -48,7 +47,6 @@ pub struct GatewayClient {
    connection: SocketState,
    packet_router: PacketRouter,
    response_timeout_duration: Duration,
-    bandwidth_controller: Option<BandwidthController>,

    // reconnection related variables
    /// Specifies whether client should try to reconnect to gateway on connection failure.
@@ -71,19 +69,20 @@ impl GatewayClient {
        mixnet_message_sender: MixnetMessageSender,
        ack_sender: AcknowledgementSender,
        response_timeout_duration: Duration,
-        bandwidth_controller: Option<BandwidthController>,
    ) -> Self {
        GatewayClient {
            authenticated: false,
+
+            #[cfg(feature = "coconut")]
            bandwidth_remaining: 0,
            gateway_address,
+
            gateway_identity,
            local_identity,
            shared_key,
            connection: SocketState::NotConnected,
            packet_router: PacketRouter::new(ack_sender, mixnet_message_sender),
            response_timeout_duration,
-            bandwidth_controller,
            should_reconnect_on_failure: true,
            reconnection_attempts: DEFAULT_RECONNECTION_ATTEMPTS,
            reconnection_backoff: DEFAULT_RECONNECTION_BACKOFF,
@@ -119,7 +118,10 @@ impl GatewayClient {

        GatewayClient {
            authenticated: false,
+
+            #[cfg(feature = "coconut")]
            bandwidth_remaining: 0,
+
            gateway_address,
            gateway_identity,
            local_identity,
@@ -127,7 +129,6 @@ impl GatewayClient {
            connection: SocketState::NotConnected,
            packet_router,
            response_timeout_duration,
-            bandwidth_controller: None,
            should_reconnect_on_failure: false,
            reconnection_attempts: DEFAULT_RECONNECTION_ATTEMPTS,
            reconnection_backoff: DEFAULT_RECONNECTION_BACKOFF,
@@ -138,6 +139,7 @@ impl GatewayClient {
        self.gateway_identity
    }

+    #[cfg(feature = "coconut")]
    pub fn remaining_bandwidth(&self) -> i64 {
        self.bandwidth_remaining
    }
@@ -206,7 +208,14 @@ impl GatewayClient {

        for i in 1..self.reconnection_attempts {
            info!("attempt {}...", i);
-            if self.authenticate_and_start().await.is_ok() {
+            if self
+                .authenticate_and_start(
+                    #[cfg(feature = "coconut")]
+                    None,
+                )
+                .await
+                .is_ok()
+            {
                info!("managed to reconnect!");
                return Ok(());
            }
@@ -225,7 +234,13 @@ impl GatewayClient {

        // final attempt (done separately to be able to return a proper error)
        info!("attempt {}", self.reconnection_attempts);
-        match self.authenticate_and_start().await {
+        match self
+            .authenticate_and_start(
+                #[cfg(feature = "coconut")]
+                None,
+            )
+            .await
+        {
            Ok(_) => {
                info!("managed to reconnect!");
                Ok(())
@@ -436,12 +451,8 @@ impl GatewayClient {
            ClientControlRequest::new_authenticate(self_address, encrypted_address, iv).into();

        match self.send_websocket_message(msg).await? {
-            ServerResponse::Authenticate {
-                status,
-                bandwidth_remaining,
-            } => {
+            ServerResponse::Authenticate { status } => {
                self.authenticated = status;
-                self.bandwidth_remaining = bandwidth_remaining;
                Ok(())
            }
            ServerResponse::Error { message } => Err(GatewayClientError::GatewayError(message)),
@@ -467,15 +478,22 @@ impl GatewayClient {
    }

    #[cfg(feature = "coconut")]
-    async fn claim_coconut_bandwidth(
+    pub async fn claim_coconut_bandwidth(
        &mut self,
-        credential: Credential,
+        coconut_credential: Credential,
    ) -> Result<(), GatewayClientError> {
+        if !self.authenticated {
+            return Err(GatewayClientError::NotAuthenticated);
+        }
+        if self.shared_key.is_none() {
+            return Err(GatewayClientError::NoSharedKeyAvailable);
+        }
+
        let mut rng = OsRng;
        let iv = IV::new_random(&mut rng);

        let msg = ClientControlRequest::new_enc_coconut_bandwidth_credential(
-            &credential,
+            &coconut_credential,
            self.shared_key.as_ref().unwrap(),
            iv,
        )
@@ -489,64 +507,7 @@ impl GatewayClient {
        Ok(())
    }

-    #[cfg(not(feature = "coconut"))]
-    async fn claim_token_bandwidth(
-        &mut self,
-        credential: TokenCredential,
-    ) -> Result<(), GatewayClientError> {
-        let mut rng = OsRng;
-
-        let iv = IV::new_random(&mut rng);
-
-        let msg = ClientControlRequest::new_enc_token_bandwidth_credential(
-            &credential,
-            self.shared_key.as_ref().unwrap(),
-            iv,
-        )
-        .into();
-        self.bandwidth_remaining = match self.send_websocket_message(msg).await? {
-            ServerResponse::Bandwidth { available_total } => Ok(available_total),
-            ServerResponse::Error { message } => Err(GatewayClientError::GatewayError(message)),
-            _ => Err(GatewayClientError::UnexpectedResponse),
-        }?;
-
-        Ok(())
-    }
-
-    pub async fn claim_bandwidth(&mut self) -> Result<(), GatewayClientError> {
-        if !self.authenticated {
-            return Err(GatewayClientError::NotAuthenticated);
-        }
-        if self.shared_key.is_none() {
-            return Err(GatewayClientError::NoSharedKeyAvailable);
-        }
-        if self.bandwidth_controller.is_none() {
-            return Err(GatewayClientError::NoBandwidthControllerAvailable);
-        }
-
-        warn!("Not enough bandwidth. Trying to get more bandwidth, this might take a while");
-
-        #[cfg(feature = "coconut")]
-        let credential = self
-            .bandwidth_controller
-            .as_ref()
-            .unwrap()
-            .prepare_coconut_credential()
-            .await?;
-        #[cfg(not(feature = "coconut"))]
-        let credential = self
-            .bandwidth_controller
-            .as_ref()
-            .unwrap()
-            .prepare_token_credential(self.gateway_identity)
-            .await?;
-
-        #[cfg(feature = "coconut")]
-        return self.claim_coconut_bandwidth(credential).await;
-        #[cfg(not(feature = "coconut"))]
-        return self.claim_token_bandwidth(credential).await;
-    }
-
+    #[cfg(feature = "coconut")]
    fn estimate_required_bandwidth(&self, packets: &[MixPacket]) -> i64 {
        packets
            .iter()
@@ -561,16 +522,9 @@ impl GatewayClient {
        if !self.authenticated {
            return Err(GatewayClientError::NotAuthenticated);
        }
-        if self.estimate_required_bandwidth(&packets) > self.bandwidth_remaining {
-            // Try to claim more bandwidth first, and return an error only if that is still not
-            // enough (the current granularity for bandwidth should be sufficient)
-            self.claim_bandwidth().await?;
-            if self.estimate_required_bandwidth(&packets) > self.bandwidth_remaining {
-                return Err(GatewayClientError::NotEnoughBandwidth(
-                    self.estimate_required_bandwidth(&packets),
-                    self.bandwidth_remaining,
-                ));
-            }
+        #[cfg(feature = "coconut")]
+        if self.estimate_required_bandwidth(&packets) < self.bandwidth_remaining {
+            return Err(GatewayClientError::NotEnoughBandwidth);
        }
        if !self.connection.is_established() {
            return Err(GatewayClientError::ConnectionNotEstablished);
@@ -636,16 +590,9 @@ impl GatewayClient {
        if !self.authenticated {
            return Err(GatewayClientError::NotAuthenticated);
        }
+        #[cfg(feature = "coconut")]
        if (mix_packet.sphinx_packet().len() as i64) > self.bandwidth_remaining {
-            // Try to claim more bandwidth first, and return an error only if that is still not
-            // enough
-            self.claim_bandwidth().await?;
-            if (mix_packet.sphinx_packet().len() as i64) > self.bandwidth_remaining {
-                return Err(GatewayClientError::NotEnoughBandwidth(
-                    mix_packet.sphinx_packet().len() as i64,
-                    self.bandwidth_remaining,
-                ));
-            }
+            return Err(GatewayClientError::NotEnoughBandwidth);
        }
        if !self.connection.is_established() {
            return Err(GatewayClientError::ConnectionNotEstablished);
@@ -682,6 +629,10 @@ impl GatewayClient {
        if !self.authenticated {
            return Err(GatewayClientError::NotAuthenticated);
        }
+        #[cfg(feature = "coconut")]
+        if self.bandwidth_remaining <= 0 {
+            return Err(GatewayClientError::NotEnoughBandwidth);
+        }
        if self.connection.is_partially_delegated() {
            return Ok(());
        }
@@ -709,12 +660,22 @@ impl GatewayClient {
        Ok(())
    }

-    pub async fn authenticate_and_start(&mut self) -> Result<Arc<SharedKeys>, GatewayClientError> {
+    pub async fn authenticate_and_start(
+        &mut self,
+        #[cfg(feature = "coconut")] coconut_credential: Option<Credential>,
+    ) -> Result<Arc<SharedKeys>, GatewayClientError> {
        if !self.connection.is_established() {
            self.establish_connection().await?;
        }
        let shared_key = self.perform_initial_authentication().await?;

+        #[cfg(feature = "coconut")]
+        {
+            if let Some(coconut_credential) = coconut_credential {
+                self.claim_coconut_bandwidth(coconut_credential).await?;
+            }
+        }
+
        // this call is NON-blocking
        self.start_listening_for_mixnet_messages()?;

@@ -2,85 +2,41 @@
 // SPDX-License-Identifier: Apache-2.0

 use gateway_requests::registration::handshake::error::HandshakeError;
+use std::fmt::{self, Error, Formatter};
 use std::io;
-use thiserror::Error;
 use tungstenite::Error as WsError;
 #[cfg(target_arch = "wasm32")]
 use wasm_bindgen::JsValue;
-#[cfg(not(feature = "coconut"))]
-use web3::Error as Web3Error;

-#[derive(Debug, Error)]
+#[derive(Debug)]
 pub enum GatewayClientError {
-    #[error("Connection to the gateway is not established")]
    ConnectionNotEstablished,
-
-    #[error("Gateway returned an error response - {0}")]
    GatewayError(String),
-
-    #[error("There was a network error - {0}")]
-    NetworkError(#[from] WsError),
+    NetworkError(WsError),

    // TODO: see if `JsValue` is a reasonable type for this
    #[cfg(target_arch = "wasm32")]
-    #[error("There was a network error")]
    NetworkErrorWasm(JsValue),

-    #[cfg(not(feature = "coconut"))]
-    #[error("Could not backup keypair - {0}")]
-    IOError(#[from] std::io::Error),
-
-    #[cfg(not(feature = "coconut"))]
-    #[error("Could not burn ERC20 token in Ethereum smart contract - {0}")]
-    BurnTokenError(#[from] Web3Error),
-
-    #[cfg(not(feature = "coconut"))]
-    #[error("Invalid Ethereum private key")]
-    InvalidEthereumPrivateKey,
-
-    #[error("Invalid URL - {0}")]
-    InvalidURL(String),
-
-    #[error("No shared key was provided or obtained")]
    NoSharedKeyAvailable,
-
-    #[error("No bandwidth controller provided")]
-    NoBandwidthControllerAvailable,
-
-    #[error("Credential error - {0}")]
-    CredentialError(#[from] credentials::error::Error),
-
-    #[error("Connection was abruptly closed")]
    ConnectionAbruptlyClosed,
-
-    #[error("Received response was malformed")]
    MalformedResponse,
-
-    #[error("Credential could not be serialized")]
    SerializeCredential,
-
-    #[error("Client is not authenticated")]
    NotAuthenticated,
-
-    #[error("Client does not have enough bandwidth: estimated {0}, remaining: {1}")]
-    NotEnoughBandwidth(i64, i64),
-
-    #[error("Received an unexpected response")]
+    NotEnoughBandwidth,
    UnexpectedResponse,
-
-    #[error("Connection is in an invalid state - please send a bug report")]
    ConnectionInInvalidState,
-
-    #[error("Failed to finish registration handshake - {0}")]
    RegistrationFailure(HandshakeError),
-
-    #[error("Authentication failure")]
    AuthenticationFailure,
-
-    #[error("Timed out")]
    Timeout,
 }

+impl From<WsError> for GatewayClientError {
+    fn from(err: WsError) -> Self {
+        GatewayClientError::NetworkError(err)
+    }
+}
+
 impl GatewayClientError {
    pub fn is_closed_connection(&self) -> bool {
        match self {
@@ -98,3 +54,60 @@ impl GatewayClientError {
        }
    }
 }
+
+#[cfg(target_arch = "wasm32")]
+impl From<JsValue> for GatewayClientError {
+    fn from(err: JsValue) -> Self {
+        GatewayClientError::NetworkErrorWasm(err)
+    }
+}
+
+// better human readable representation of the error, mostly so that GatewayClientError
+// would implement std::error::Error
+impl fmt::Display for GatewayClientError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error> {
+        match self {
+            GatewayClientError::ConnectionNotEstablished => {
+                write!(f, "connection to the gateway is not established")
+            }
+            GatewayClientError::NoSharedKeyAvailable => {
+                write!(f, "no shared key was provided or obtained")
+            }
+            GatewayClientError::NotAuthenticated => write!(f, "client is not authenticated"),
+
+            GatewayClientError::NetworkError(err) => {
+                write!(f, "there was a network error - {}", err)
+            }
+            #[cfg(target_arch = "wasm32")]
+            GatewayClientError::NetworkErrorWasm(err) => {
+                write!(f, "there was a network error - {:?}", err)
+            }
+
+            GatewayClientError::ConnectionAbruptlyClosed => {
+                write!(f, "connection was abruptly closed")
+            }
+            GatewayClientError::Timeout => write!(f, "timed out"),
+            GatewayClientError::MalformedResponse => write!(f, "received response was malformed"),
+            GatewayClientError::ConnectionInInvalidState => write!(
+                f,
+                "connection is in an invalid state - please send a bug report"
+            ),
+            GatewayClientError::RegistrationFailure(handshake_err) => write!(
+                f,
+                "failed to finish registration handshake - {}",
+                handshake_err
+            ),
+            GatewayClientError::AuthenticationFailure => write!(f, "authentication failure"),
+            GatewayClientError::GatewayError(err) => {
+                write!(f, "gateway returned an error response - {}", err)
+            }
+            GatewayClientError::UnexpectedResponse => write!(f, "received an unexpected response"),
+            GatewayClientError::NotEnoughBandwidth => {
+                write!(f, "client does not have enough bandwidth")
+            }
+            GatewayClientError::SerializeCredential => {
+                write!(f, "credential could not be serialized")
+            }
+        }
+    }
+}
@@ -8,7 +8,6 @@ pub use packet_router::{
 };
 use tungstenite::{protocol::Message, Error as WsError};

-pub mod bandwidth;
 pub mod client;
 pub mod error;
 pub mod packet_router;
@@ -119,7 +119,7 @@ impl PartiallyDelegated {
            }
            .is_err()
            {
-                warn!("failed to send back `mixnet_receiver_future` result on the oneshot channel")
+                panic!("failed to send back `mixnet_receiver_future` result on the oneshot channel")
            }
        };

@@ -10,7 +10,6 @@ rust-version = "1.56"
 [dependencies]
 base64 = "0.13"
 mixnet-contract = { path="../../../common/mixnet-contract" }
-vesting-contract = { path="../../../contracts/vesting" }
 serde = { version="1", features=["derive"] }
 serde_json = "1"
 reqwest = { version="0.11", features=["json"] }
@@ -27,14 +26,13 @@ network-defaults = { path = "../../network-defaults" }
 async-trait = { version = "0.1.51", optional = true }
 bip39 = { version = "1", features = ["rand"], optional = true }
 config = { path = "../../config", optional = true }
-#cosmrs = { version = "0.3", features = ["rpc", "bip32", "cosmwasm"], optional = true }
-cosmrs = { git = "https://github.com/cosmos/cosmos-rust", rev="e5a1872083abb3d88fa62dda966e7f5408deba58", features = ["rpc", "bip32", "cosmwasm"], optional = true }
+cosmrs = { version = "0.3", features = ["rpc", "bip32", "cosmwasm"], optional = true }
 prost = { version = "0.9", default-features = false, optional = true }
 flate2 = { version = "1.0.20", optional = true }
 sha2 = { version = "0.9.5", optional = true }
 itertools = { version = "0.10", optional = true }
-cosmwasm-std = { version = "1.0.0-beta2", optional = true }
-ts-rs = {version = "5.1", optional = true}
+cosmwasm-std = { git = "https://github.com/jstuczyn/cosmwasm", branch="0.14.1-updatedk256", optional = true }
+ts-rs = "3.0"

 [features]
 nymd-client = ["async-trait", "bip39", "config", "cosmrs", "prost", "flate2", "sha2", "itertools", "cosmwasm-std"]
@@ -6,18 +6,13 @@ use crate::nymd::{
    error::NymdError, CosmWasmClient, NymdClient, QueryNymdClient, SigningNymdClient,
 };
 #[cfg(feature = "nymd-client")]
-use mixnet_contract::ContractStateParams;
+use mixnet_contract::StateParams;

 use crate::{validator_api, ValidatorClientError};
 use coconut_interface::{BlindSignRequestBody, BlindedSignatureResponse, VerificationKeyResponse};
 #[cfg(feature = "nymd-client")]
-use mixnet_contract::{
-    Delegation, MixnetContractVersion, MixnodeRewardingStatusResponse, RewardingIntervalResponse,
-};
+use mixnet_contract::RawDelegationData;
 use mixnet_contract::{GatewayBond, MixNodeBond};
-
-#[cfg(feature = "nymd-client")]
-use std::str::FromStr;
 use url::Url;

 #[cfg(feature = "nymd-client")]
@@ -25,7 +20,6 @@ pub struct Config {
    api_url: Url,
    nymd_url: Url,
    mixnet_contract_address: Option<cosmrs::AccountId>,
-    vesting_contract_address: Option<cosmrs::AccountId>,

    mixnode_page_limit: Option<u32>,
    gateway_page_limit: Option<u32>,
@@ -38,12 +32,10 @@ impl Config {
        nymd_url: Url,
        api_url: Url,
        mixnet_contract_address: Option<cosmrs::AccountId>,
-        vesting_contract_address: Option<cosmrs::AccountId>,
    ) -> Self {
        Config {
            nymd_url,
            mixnet_contract_address,
-            vesting_contract_address,
            api_url,
            mixnode_page_limit: None,
            gateway_page_limit: None,
@@ -70,7 +62,6 @@ impl Config {
 #[cfg(feature = "nymd-client")]
 pub struct Client<C> {
    mixnet_contract_address: Option<cosmrs::AccountId>,
-    vesting_contract_address: Option<cosmrs::AccountId>,
    mnemonic: Option<bip39::Mnemonic>,

    mixnode_page_limit: Option<u32>,
@@ -92,14 +83,11 @@ impl Client<SigningNymdClient> {
        let nymd_client = NymdClient::connect_with_mnemonic(
            config.nymd_url.as_str(),
            config.mixnet_contract_address.clone(),
-            config.vesting_contract_address.clone(),
            mnemonic.clone(),
-            None,
        )?;

        Ok(Client {
            mixnet_contract_address: config.mixnet_contract_address,
-            vesting_contract_address: config.vesting_contract_address,
            mnemonic: Some(mnemonic),
            mixnode_page_limit: config.mixnode_page_limit,
            gateway_page_limit: config.gateway_page_limit,
@@ -113,9 +101,7 @@ impl Client<SigningNymdClient> {
        self.nymd = NymdClient::connect_with_mnemonic(
            new_endpoint.as_ref(),
            self.mixnet_contract_address.clone(),
-            self.vesting_contract_address.clone(),
            self.mnemonic.clone().unwrap(),
-            None,
        )?;
        Ok(())
    }
@@ -127,19 +113,16 @@ impl Client<QueryNymdClient> {
        let validator_api_client = validator_api::Client::new(config.api_url.clone());
        let nymd_client = NymdClient::connect(
            config.nymd_url.as_str(),
-            config.mixnet_contract_address.clone().unwrap_or_else(|| {
-                cosmrs::AccountId::from_str(network_defaults::DEFAULT_MIXNET_CONTRACT_ADDRESS)
-                    .unwrap()
-            }),
-            config.vesting_contract_address.clone().unwrap_or_else(|| {
-                cosmrs::AccountId::from_str(network_defaults::DEFAULT_VESTING_CONTRACT_ADDRESS)
-                    .unwrap()
-            }),
+            config
+                .mixnet_contract_address
+                .clone()
+                .ok_or(ValidatorClientError::NymdError(
+                    NymdError::NoContractAddressAvailable,
+                ))?,
        )?;

        Ok(Client {
            mixnet_contract_address: config.mixnet_contract_address,
-            vesting_contract_address: config.vesting_contract_address,
            mnemonic: None,
            mixnode_page_limit: config.mixnode_page_limit,
            gateway_page_limit: config.gateway_page_limit,
@@ -153,7 +136,6 @@ impl Client<QueryNymdClient> {
        self.nymd = NymdClient::connect(
            new_endpoint.as_ref(),
            self.mixnet_contract_address.clone().unwrap(),
-            self.vesting_contract_address.clone().unwrap(),
        )?;
        Ok(())
    }
@@ -183,69 +165,11 @@ impl<C> Client<C> {
        Ok(self.validator_api.get_gateways().await?)
    }

-    pub async fn get_contract_settings(&self) -> Result<ContractStateParams, ValidatorClientError>
+    pub async fn get_state_params(&self) -> Result<StateParams, ValidatorClientError>
    where
        C: CosmWasmClient + Sync,
    {
-        Ok(self.nymd.get_contract_settings().await?)
-    }
-
-    pub async fn get_mixnet_contract_version(&self) -> Result<MixnetContractVersion, NymdError>
-    where
-        C: CosmWasmClient + Sync,
-    {
-        Ok(self.nymd.get_mixnet_contract_version().await?)
-    }
-
-    pub async fn get_current_rewarding_interval(
-        &self,
-    ) -> Result<RewardingIntervalResponse, ValidatorClientError>
-    where
-        C: CosmWasmClient + Sync,
-    {
-        Ok(self.nymd.get_current_rewarding_interval().await?)
-    }
-
-    pub async fn get_rewarding_status(
-        &self,
-        mix_identity: mixnet_contract::IdentityKey,
-        rewarding_interval_nonce: u32,
-    ) -> Result<MixnodeRewardingStatusResponse, ValidatorClientError>
-    where
-        C: CosmWasmClient + Sync,
-    {
-        Ok(self
-            .nymd
-            .get_rewarding_status(mix_identity, rewarding_interval_nonce)
-            .await?)
-    }
-
-    pub async fn get_reward_pool(&self) -> Result<u128, ValidatorClientError>
-    where
-        C: CosmWasmClient + Sync,
-    {
-        Ok(self.nymd.get_reward_pool().await?.u128())
-    }
-
-    pub async fn get_circulating_supply(&self) -> Result<u128, ValidatorClientError>
-    where
-        C: CosmWasmClient + Sync,
-    {
-        Ok(self.nymd.get_circulating_supply().await?.u128())
-    }
-
-    pub async fn get_sybil_resistance_percent(&self) -> Result<u8, ValidatorClientError>
-    where
-        C: CosmWasmClient + Sync,
-    {
-        Ok(self.nymd.get_sybil_resistance_percent().await?)
-    }
-
-    pub async fn get_epoch_reward_percent(&self) -> Result<u8, ValidatorClientError>
-    where
-        C: CosmWasmClient + Sync,
-    {
-        Ok(self.nymd.get_epoch_reward_percent().await?)
+        Ok(self.nymd.get_state_params().await?)
    }

    // basically handles paging for us
@@ -325,7 +249,9 @@ impl<C> Client<C> {
        Ok(delegations)
    }

-    pub async fn get_all_network_delegations(&self) -> Result<Vec<Delegation>, ValidatorClientError>
+    pub async fn get_all_nymd_mixnode_delegations(
+        &self,
+    ) -> Result<Vec<mixnet_contract::UnpackedDelegation<RawDelegationData>>, ValidatorClientError>
    where
        C: CosmWasmClient + Sync,
    {
@@ -334,7 +260,7 @@ impl<C> Client<C> {
        loop {
            let mut paged_response = self
                .nymd
-                .get_all_network_delegations_paged(
+                .get_all_mix_delegations_paged(
                    start_after.take(),
                    self.mixnode_delegations_page_limit,
                )
@@ -351,10 +277,10 @@ impl<C> Client<C> {
        Ok(delegations)
    }

-    pub async fn get_all_delegator_delegations(
+    pub async fn get_all_nymd_reverse_mixnode_delegations(
        &self,
        delegation_owner: &cosmrs::AccountId,
-    ) -> Result<Vec<Delegation>, ValidatorClientError>
+    ) -> Result<Vec<mixnet_contract::IdentityKey>, ValidatorClientError>
    where
        C: CosmWasmClient + Sync,
    {
@@ -363,13 +289,13 @@ impl<C> Client<C> {
        loop {
            let mut paged_response = self
                .nymd
-                .get_delegator_delegations_paged(
-                    delegation_owner.to_string(),
+                .get_reverse_mix_delegations_paged(
+                    mixnet_contract::Addr::unchecked(delegation_owner.as_ref()),
                    start_after.take(),
                    self.mixnode_delegations_page_limit,
                )
                .await?;
-            delegations.append(&mut paged_response.delegations);
+            delegations.append(&mut paged_response.delegated_nodes);

            if let Some(start_after_res) = paged_response.start_next_after {
                start_after = Some(start_after_res)
@@ -381,6 +307,28 @@ impl<C> Client<C> {
        Ok(delegations)
    }

+    pub async fn get_all_nymd_mixnode_delegations_of_owner(
+        &self,
+        delegation_owner: &cosmrs::AccountId,
+    ) -> Result<Vec<mixnet_contract::Delegation>, ValidatorClientError>
+    where
+        C: CosmWasmClient + Sync,
+    {
+        let mut delegations = Vec::new();
+        for node_identity in self
+            .get_all_nymd_reverse_mixnode_delegations(delegation_owner)
+            .await?
+        {
+            let delegation = self
+                .nymd
+                .get_mix_delegation(node_identity, delegation_owner)
+                .await?;
+            delegations.push(delegation);
+        }
+
+        Ok(delegations)
+    }
+
    pub async fn blind_sign(
        &self,
        request_body: &BlindSignRequestBody,
@@ -4,7 +4,7 @@
 use crate::nymd::cosmwasm_client::helpers::create_pagination;
 use crate::nymd::cosmwasm_client::types::{
    Account, Code, CodeDetails, Contract, ContractCodeHistoryEntry, ContractCodeId,
-    SequenceResponse, SimulateResponse,
+    SequenceResponse,
 };
 use crate::nymd::error::NymdError;
 use async_trait::async_trait;
@@ -14,19 +14,15 @@ use cosmrs::proto::cosmos::auth::v1beta1::{
 use cosmrs::proto::cosmos::bank::v1beta1::{
    QueryAllBalancesRequest, QueryAllBalancesResponse, QueryBalanceRequest, QueryBalanceResponse,
 };
-use cosmrs::proto::cosmos::tx::v1beta1::{
-    SimulateRequest, SimulateResponse as ProtoSimulateResponse,
-};
-use cosmrs::proto::cosmwasm::wasm::v1::*;
+use cosmrs::proto::cosmwasm::wasm::v1beta1::*;
 use cosmrs::rpc::endpoint::block::Response as BlockResponse;
 use cosmrs::rpc::endpoint::broadcast;
 use cosmrs::rpc::endpoint::tx::Response as TxResponse;
 use cosmrs::rpc::query::Query;
 use cosmrs::rpc::{self, HttpClient, Order};
-use cosmrs::tendermint::abci::Code as AbciCode;
 use cosmrs::tendermint::abci::Transaction;
 use cosmrs::tendermint::{abci, block, chain};
-use cosmrs::{tx, AccountId, Coin, Denom, Tx};
+use cosmrs::{tx, AccountId, Coin, Denom};
 use prost::Message;
 use serde::{Deserialize, Serialize};
 use std::convert::{TryFrom, TryInto};
@@ -53,11 +49,6 @@ pub trait CosmWasmClient: rpc::Client {

        let res = self.abci_query(path, buf, None, false).await?;

-        match res.code {
-            AbciCode::Err(code) => return Err(NymdError::AbciError(code, res.log)),
-            AbciCode::Ok => (),
-        }
-
        Ok(Res::decode(res.value.as_ref())?)
    }

@@ -222,7 +213,7 @@ pub trait CosmWasmClient: rpc::Client {
    }

    async fn get_codes(&self) -> Result<Vec<Code>, NymdError> {
-        let path = Some("/cosmwasm.wasm.v1.Query/Codes".parse().unwrap());
+        let path = Some("/cosmwasm.wasm.v1beta1.Query/Codes".parse().unwrap());

        let mut raw_codes = Vec::new();
        let mut pagination = None;
@@ -249,7 +240,7 @@ pub trait CosmWasmClient: rpc::Client {
    }

    async fn get_code_details(&self, code_id: ContractCodeId) -> Result<CodeDetails, NymdError> {
-        let path = Some("/cosmwasm.wasm.v1.Query/Code".parse().unwrap());
+        let path = Some("/cosmwasm.wasm.v1beta1.Query/Code".parse().unwrap());

        let req = QueryCodeRequest { code_id };

@@ -264,7 +255,11 @@ pub trait CosmWasmClient: rpc::Client {
        }
    }
    async fn get_contracts(&self, code_id: ContractCodeId) -> Result<Vec<AccountId>, NymdError> {
-        let path = Some("/cosmwasm.wasm.v1.Query/ContractsByCode".parse().unwrap());
+        let path = Some(
+            "/cosmwasm.wasm.v1beta1.Query/ContractsByCode"
+                .parse()
+                .unwrap(),
+        );

        let mut raw_contracts = Vec::new();
        let mut pagination = None;
@@ -295,7 +290,7 @@ pub trait CosmWasmClient: rpc::Client {
    }

    async fn get_contract(&self, address: &AccountId) -> Result<Contract, NymdError> {
-        let path = Some("/cosmwasm.wasm.v1.Query/ContractInfo".parse().unwrap());
+        let path = Some("/cosmwasm.wasm.v1beta1.Query/ContractInfo".parse().unwrap());

        let req = QueryContractInfoRequest {
            address: address.to_string(),
@@ -320,7 +315,11 @@ pub trait CosmWasmClient: rpc::Client {
        &self,
        address: &AccountId,
    ) -> Result<Vec<ContractCodeHistoryEntry>, NymdError> {
-        let path = Some("/cosmwasm.wasm.v1.Query/ContractHistory".parse().unwrap());
+        let path = Some(
+            "/cosmwasm.wasm.v1beta1.Query/ContractHistory"
+                .parse()
+                .unwrap(),
+        );

        let mut raw_entries = Vec::new();
        let mut pagination = None;
@@ -354,7 +353,11 @@ pub trait CosmWasmClient: rpc::Client {
        address: &AccountId,
        query_data: Vec<u8>,
    ) -> Result<Vec<u8>, NymdError> {
-        let path = Some("/cosmwasm.wasm.v1.Query/RawContractState".parse().unwrap());
+        let path = Some(
+            "/cosmwasm.wasm.v1beta1.Query/RawContractState"
+                .parse()
+                .unwrap(),
+        );

        let req = QueryRawContractStateRequest {
            address: address.to_string(),
@@ -378,7 +381,7 @@ pub trait CosmWasmClient: rpc::Client {
        for<'a> T: Deserialize<'a>,
    {
        let path = Some(
-            "/cosmwasm.wasm.v1.Query/SmartContractState"
+            "/cosmwasm.wasm.v1beta1.Query/SmartContractState"
                .parse()
                .unwrap(),
        );
@@ -397,27 +400,4 @@ pub trait CosmWasmClient: rpc::Client {

        Ok(serde_json::from_slice(&res.data)?)
    }
-
-    // deprecation warning is due to the fact the protobuf files built were based on cosmos-sdk 0.44,
-    // where they prefer using tx_bytes directly. However, in 0.42, which we are using at the time
-    // of writing this, the option does not work
-    #[allow(deprecated)]
-    async fn query_simulate(
-        &self,
-        tx: Option<Tx>,
-        tx_bytes: Vec<u8>,
-    ) -> Result<SimulateResponse, NymdError> {
-        let path = Some("/cosmos.tx.v1beta1.Service/Simulate".parse().unwrap());
-
-        let req = SimulateRequest {
-            tx: tx.map(Into::into),
-            tx_bytes,
-        };
-
-        let res = self
-            .make_abci_query::<_, ProtoSimulateResponse>(path, req)
-            .await?;
-
-        res.try_into()
-    }
 }
@@ -29,7 +29,7 @@ pub(crate) fn find_attribute<'a>(
 ) -> Option<&'a cosmwasm_std::Attribute> {
    logs.iter()
        .flat_map(|log| log.events.iter())
-        .find(|event| event.ty == event_type)?
+        .find(|event| event.kind == event_type)?
        .attributes
        .iter()
        .find(|attr| attr.key == attribute_key)
@@ -61,7 +61,7 @@ mod tests {
        assert_eq!(parsed.len(), 1);
        assert_eq!(parsed[0].msg_index, 0);
        assert_eq!(parsed[0].events.len(), 1);
-        assert_eq!(parsed[0].events[0].ty, "message");
+        assert_eq!(parsed[0].events[0].kind, "message");
        assert_eq!(parsed[0].events[0].attributes[3].key, "code_id");
        assert_eq!(parsed[0].events[0].attributes[3].value, "1");
    }
@@ -76,12 +76,12 @@ mod tests {
        assert_eq!(parsed[2].msg_index, 2);

        assert_eq!(parsed[0].events.len(), 1);
-        assert_eq!(parsed[0].events[0].ty, "message");
+        assert_eq!(parsed[0].events[0].kind, "message");
        assert_eq!(parsed[0].events[0].attributes[3].key, "code_id");
        assert_eq!(parsed[0].events[0].attributes[3].value, "9");

        assert_eq!(parsed[2].events.len(), 1);
-        assert_eq!(parsed[2].events[0].ty, "message");
+        assert_eq!(parsed[2].events[0].kind, "message");
        assert_eq!(parsed[2].events[0].attributes[2].key, "signer");
        assert_eq!(
            parsed[2].events[0].attributes[2].value,
@@ -3,7 +3,6 @@

 use crate::nymd::error::NymdError;
 use crate::nymd::wallet::DirectSecp256k1HdWallet;
-use crate::nymd::GasPrice;
 use cosmrs::rpc::{Error as TendermintRpcError, HttpClient, HttpClientUrl};
 use std::convert::TryInto;

@@ -24,10 +23,9 @@ where
 pub fn connect_with_signer<U>(
    endpoint: U,
    signer: DirectSecp256k1HdWallet,
-    gas_price: Option<GasPrice>,
 ) -> Result<signing_client::Client, NymdError>
 where
    U: TryInto<HttpClientUrl, Error = TendermintRpcError>,
 {
-    signing_client::Client::connect_with_signer(endpoint, signer, gas_price)
+    signing_client::Client::connect_with_signer(endpoint, signer)
 }
@@ -1,100 +1,37 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use std::convert::TryInto;
-
-use async_trait::async_trait;
-use cosmrs::bank::MsgSend;
-use cosmrs::distribution::MsgWithdrawDelegatorReward;
-use cosmrs::proto::cosmos::tx::signing::v1beta1::SignMode;
-use cosmrs::rpc::endpoint::broadcast;
-use cosmrs::rpc::{Error as TendermintRpcError, HttpClient, HttpClientUrl, SimpleRequest};
-use cosmrs::staking::{MsgDelegate, MsgUndelegate};
-use cosmrs::tx::{self, Msg, SignDoc, SignerInfo};
-use cosmrs::{cosmwasm, rpc, AccountId, Any, Coin, Tx};
-use log::debug;
-use serde::Serialize;
-use sha2::Digest;
-use sha2::Sha256;
-
 use crate::nymd::cosmwasm_client::client::CosmWasmClient;
 use crate::nymd::cosmwasm_client::helpers::{compress_wasm_code, CheckResponse};
 use crate::nymd::cosmwasm_client::logs::{self, parse_raw_logs};
 use crate::nymd::cosmwasm_client::types::*;
 use crate::nymd::error::NymdError;
-use crate::nymd::fee::{Fee, DEFAULT_SIMULATED_GAS_MULTIPLIER};
 use crate::nymd::wallet::DirectSecp256k1HdWallet;
-use crate::nymd::{CosmosCoin, GasPrice};
-
-// we need to have **a** valid secp256k1 signature for simulation purposes.
-// it doesn't matter what it is as long as it parses correctly
-const DUMMY_SECP256K1_SIGNATURE: &[u8] = &[
-    54, 167, 169, 61, 100, 173, 231, 87, 1, 113, 179, 49, 102, 141, 67, 22, 170, 153, 52, 88, 178,
-    159, 200, 11, 37, 138, 76, 221, 187, 70, 104, 123, 98, 216, 190, 249, 149, 81, 1, 158, 0, 220,
-    32, 147, 101, 60, 64, 77, 44, 83, 221, 119, 170, 124, 109, 177, 73, 116, 46, 57, 102, 181, 98,
-    91,
-];
+use async_trait::async_trait;
+use cosmrs::bank::MsgSend;
+use cosmrs::distribution::MsgWithdrawDelegatorReward;
+use cosmrs::rpc::endpoint::broadcast;
+use cosmrs::rpc::{Error as TendermintRpcError, HttpClient, HttpClientUrl, SimpleRequest};
+use cosmrs::staking::{MsgDelegate, MsgUndelegate};
+use cosmrs::tx::{Fee, Msg, SignDoc, SignerInfo};
+use cosmrs::{cosmwasm, rpc, tx, AccountId, Any, Coin};
+use log::debug;
+use serde::Serialize;
+use sha2::Digest;
+use sha2::Sha256;
+use std::convert::TryInto;

 #[async_trait]
 pub trait SigningCosmWasmClient: CosmWasmClient {
    fn signer(&self) -> &DirectSecp256k1HdWallet;

-    fn gas_price(&self) -> &GasPrice;
-
-    fn signer_public_key(&self, signer_address: &AccountId) -> Option<tx::SignerPublicKey> {
-        let signer_accounts = self.signer().try_derive_accounts().ok()?;
-        let account_from_signer = signer_accounts
-            .iter()
-            .find(|account| &account.address == signer_address)?;
-        let public_key = account_from_signer.public_key;
-        Some(public_key.into())
-    }
-
-    async fn simulate(
-        &self,
-        signer_address: &AccountId,
-        messages: Vec<Any>,
-        memo: impl Into<String> + Send + 'static,
-    ) -> Result<SimulateResponse, NymdError> {
-        let public_key = self.signer_public_key(signer_address);
-        let sequence_response = self.get_sequence(signer_address).await?;
-
-        let partial_tx = Tx {
-            body: tx::Body {
-                messages,
-                memo: memo.into(),
-                timeout_height: 0u32.into(),
-                extension_options: vec![],
-                non_critical_extension_options: vec![],
-            },
-            auth_info: tx::AuthInfo {
-                signer_infos: vec![tx::SignerInfo {
-                    public_key,
-                    mode_info: tx::ModeInfo::Single(tx::mode_info::Single {
-                        mode: SignMode::Unspecified,
-                    }),
-                    sequence: sequence_response.sequence,
-                }],
-                fee: tx::Fee::from_amount_and_gas(
-                    CosmosCoin {
-                        denom: "".parse().unwrap(),
-                        amount: 0u64.into(),
-                    },
-                    0,
-                ),
-            },
-            signatures: vec![DUMMY_SECP256K1_SIGNATURE.try_into().unwrap()],
-        };
-
-        self.query_simulate(Some(partial_tx), Vec::new()).await
-    }
-
    async fn upload(
        &self,
        sender_address: &AccountId,
        wasm_code: Vec<u8>,
        fee: Fee,
        memo: impl Into<String> + Send + 'static,
+        mut meta: Option<UploadMeta>,
    ) -> Result<UploadResult, NymdError> {
        let compressed = compress_wasm_code(&wasm_code)?;
        let compressed_size = compressed.len();
@@ -105,6 +42,14 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        let upload_msg = cosmwasm::MsgStoreCode {
            sender: sender_address.clone(),
            wasm_byte_code: compressed,
+            source: meta
+                .as_mut()
+                .map(|meta| meta.source.take())
+                .unwrap_or_default(),
+            builder: meta
+                .as_mut()
+                .map(|meta| meta.builder.take())
+                .unwrap_or_default(),
            instantiate_permission: Default::default(),
        }
        .to_any()
@@ -116,13 +61,12 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            .check_response()?;

        let logs = parse_raw_logs(tx_res.deliver_tx.log)?;
-        let gas_info = GasInfo::new(tx_res.deliver_tx.gas_wanted, tx_res.deliver_tx.gas_used);

        // TODO: should those strings be extracted into some constants?
        // the reason I think unwrap here is fine is that if the transaction succeeded and those
        // fields do not exist or code_id is not a number, there's no way we can recover, we're probably connected
        // to wrong validator or something
-        let code_id = logs::find_attribute(&logs, "store_code", "code_id")
+        let code_id = logs::find_attribute(&logs, "message", "code_id")
            .unwrap()
            .value
            .parse()
@@ -136,7 +80,6 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            code_id,
            logs,
            transaction_hash: tx_res.hash,
-            gas_info,
        })
    }

@@ -168,7 +111,7 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            // now this is a weird one. the protobuf files say this field is optional,
            // but if you omit it, the initialisation will fail CheckTx
            label: Some(label),
-            msg: serde_json::to_vec(msg)?,
+            init_msg: serde_json::to_vec(msg)?,
            funds: options.map(|options| options.funds).unwrap_or_default(),
        }
        .to_any()
@@ -180,13 +123,12 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            .check_response()?;

        let logs = parse_raw_logs(tx_res.deliver_tx.log)?;
-        let gas_info = GasInfo::new(tx_res.deliver_tx.gas_wanted, tx_res.deliver_tx.gas_used);

        // TODO: should those strings be extracted into some constants?
        // the reason I think unwrap here is fine is that if the transaction succeeded and those
        // fields do not exist or address is malformed, there's no way we can recover, we're probably connected
        // to wrong validator or something
-        let contract_address = logs::find_attribute(&logs, "instantiate", "_contract_address")
+        let contract_address = logs::find_attribute(&logs, "message", "contract_address")
            .unwrap()
            .value
            .parse()
@@ -196,7 +138,6 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            contract_address,
            logs,
            transaction_hash: tx_res.hash,
-            gas_info,
        })
    }

@@ -221,12 +162,9 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            .await?
            .check_response()?;

-        let gas_info = GasInfo::new(tx_res.deliver_tx.gas_wanted, tx_res.deliver_tx.gas_used);
-
        Ok(ChangeAdminResult {
            logs: parse_raw_logs(tx_res.deliver_tx.log)?,
            transaction_hash: tx_res.hash,
-            gas_info,
        })
    }

@@ -249,12 +187,9 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            .await?
            .check_response()?;

-        let gas_info = GasInfo::new(tx_res.deliver_tx.gas_wanted, tx_res.deliver_tx.gas_used);
-
        Ok(ChangeAdminResult {
            logs: parse_raw_logs(tx_res.deliver_tx.log)?,
            transaction_hash: tx_res.hash,
-            gas_info,
        })
    }

@@ -274,7 +209,7 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            sender: sender_address.clone(),
            contract: contract_address.clone(),
            code_id,
-            msg: serde_json::to_vec(msg)?,
+            migrate_msg: serde_json::to_vec(msg)?,
        }
        .to_any()
        .map_err(|_| NymdError::SerializationError("MsgMigrateContract".to_owned()))?;
@@ -284,12 +219,9 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            .await?
            .check_response()?;

-        let gas_info = GasInfo::new(tx_res.deliver_tx.gas_wanted, tx_res.deliver_tx.gas_used);
-
        Ok(MigrateResult {
            logs: parse_raw_logs(tx_res.deliver_tx.log)?,
            transaction_hash: tx_res.hash,
-            gas_info,
        })
    }

@@ -319,12 +251,9 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            .await?
            .check_response()?;

-        let gas_info = GasInfo::new(tx_res.deliver_tx.gas_wanted, tx_res.deliver_tx.gas_used);
-
        Ok(ExecuteResult {
            logs: parse_raw_logs(tx_res.deliver_tx.log)?,
            transaction_hash: tx_res.hash,
-            gas_info,
        })
    }

@@ -359,12 +288,14 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
            .await?
            .check_response()?;

-        let gas_info = GasInfo::new(tx_res.deliver_tx.gas_wanted, tx_res.deliver_tx.gas_used);
+        debug!(
+            "gas wanted: {:?}, gas used: {:?}",
+            tx_res.deliver_tx.gas_wanted, tx_res.deliver_tx.gas_used
+        );

        Ok(ExecuteResult {
            logs: parse_raw_logs(tx_res.deliver_tx.log)?,
            transaction_hash: tx_res.hash,
-            gas_info,
        })
    }

@@ -385,36 +316,7 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        .map_err(|_| NymdError::SerializationError("MsgSend".to_owned()))?;

        self.sign_and_broadcast_commit(sender_address, vec![send_msg], fee, memo)
-            .await?
-            .check_response()
-    }
-
-    async fn send_tokens_multiple<I>(
-        &self,
-        sender_address: &AccountId,
-        msgs: I,
-        fee: Fee,
-        memo: impl Into<String> + Send + 'static,
-    ) -> Result<broadcast::tx_commit::Response, NymdError>
-    where
-        I: IntoIterator<Item = (AccountId, Vec<Coin>)> + Send,
-    {
-        let messages = msgs
-            .into_iter()
-            .map(|(to_address, amount)| {
-                MsgSend {
-                    from_address: sender_address.clone(),
-                    to_address,
-                    amount,
-                }
-                .to_any()
-                .map_err(|_| NymdError::SerializationError("MsgExecuteContract".to_owned()))
-            })
-            .collect::<Result<_, _>>()?;
-
-        self.sign_and_broadcast_commit(sender_address, messages, fee, memo)
-            .await?
-            .check_response()
+            .await
    }

    async fn delegate_tokens(
@@ -434,8 +336,7 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        .map_err(|_| NymdError::SerializationError("MsgDelegate".to_owned()))?;

        self.sign_and_broadcast_commit(delegator_address, vec![delegate_msg], fee, memo)
-            .await?
-            .check_response()
+            .await
    }

    async fn undelegate_tokens(
@@ -455,8 +356,7 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        .map_err(|_| NymdError::SerializationError("MsgUndelegate".to_owned()))?;

        self.sign_and_broadcast_commit(delegator_address, vec![undelegate_msg], fee, memo)
-            .await?
-            .check_response()
+            .await
    }

    async fn withdraw_rewards(
@@ -474,45 +374,7 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        .map_err(|_| NymdError::SerializationError("MsgWithdrawDelegatorReward".to_owned()))?;

        self.sign_and_broadcast_commit(delegator_address, vec![withdraw_msg], fee, memo)
-            .await?
-            .check_response()
-    }
-
-    // in this particular case we cannot generalise the argument to `&str` due to lifetime constraints
-    #[allow(clippy::ptr_arg)]
-    async fn determine_transaction_fee(
-        &self,
-        signer_address: &AccountId,
-        messages: &[Any],
-        fee: Fee,
-        memo: &String,
-    ) -> Result<tx::Fee, NymdError> {
-        let fee = match fee {
-            Fee::Manual(fee) => fee,
-            Fee::Auto(multiplier) => {
-                debug!("Trying to simulate gas costs...");
-                // from what I've seen in manual testing, gas estimation does not exist if transaction
-                // fails to get executed (for example if you send 'BondMixnode" with invalid signature)
-                let gas_estimation = self
-                    .simulate(signer_address, messages.to_vec(), memo.clone())
-                    .await?
-                    .gas_info
-                    .ok_or(NymdError::GasEstimationFailure)?
-                    .gas_used;
-
-                let multiplier = multiplier.unwrap_or(DEFAULT_SIMULATED_GAS_MULTIPLIER);
-                let gas = ((gas_estimation.value() as f32 * multiplier) as u64).into();
-
-                debug!("Gas estimation: {}", gas_estimation);
-                debug!("Multiplying the estimation by {}", multiplier);
-                debug!("Final gas limit used: {}", gas);
-
-                let fee = self.gas_price() * gas;
-                tx::Fee::from_amount_and_gas(fee, gas)
-            }
-        };
-        debug!("Fee used for the transaction: {:?}", fee);
-        Ok(fee)
+            .await
    }

    /// Broadcast a transaction, returning immediately.
@@ -523,10 +385,6 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        fee: Fee,
        memo: impl Into<String> + Send + 'static,
    ) -> Result<broadcast::tx_async::Response, NymdError> {
-        let memo = memo.into();
-        let fee = self
-            .determine_transaction_fee(signer_address, &messages, fee, &memo)
-            .await?;
        let tx_raw = self.sign(signer_address, messages, fee, memo).await?;
        let tx_bytes = tx_raw
            .to_bytes()
@@ -543,10 +401,6 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        fee: Fee,
        memo: impl Into<String> + Send + 'static,
    ) -> Result<broadcast::tx_sync::Response, NymdError> {
-        let memo = memo.into();
-        let fee = self
-            .determine_transaction_fee(signer_address, &messages, fee, &memo)
-            .await?;
        let tx_raw = self.sign(signer_address, messages, fee, memo).await?;
        let tx_bytes = tx_raw
            .to_bytes()
@@ -563,11 +417,6 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        fee: Fee,
        memo: impl Into<String> + Send + 'static,
    ) -> Result<broadcast::tx_commit::Response, NymdError> {
-        let memo = memo.into();
-        let fee = self
-            .determine_transaction_fee(signer_address, &messages, fee, &memo)
-            .await?;
-
        let tx_raw = self.sign(signer_address, messages, fee, memo).await?;
        let tx_bytes = tx_raw
            .to_bytes()
@@ -580,7 +429,7 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        &self,
        signer_address: &AccountId,
        messages: Vec<Any>,
-        fee: tx::Fee,
+        fee: Fee,
        memo: impl Into<String> + Send + 'static,
        signer_data: SignerData,
    ) -> Result<tx::Raw, NymdError> {
@@ -618,7 +467,7 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
        &self,
        signer_address: &AccountId,
        messages: Vec<Any>,
-        fee: tx::Fee,
+        fee: Fee,
        memo: impl Into<String> + Send + 'static,
    ) -> Result<tx::Raw, NymdError> {
        // TODO: Future optimisation: rather than grabbing current account_number and sequence
@@ -636,28 +485,22 @@ pub trait SigningCosmWasmClient: CosmWasmClient {
    }
 }

-#[derive(Debug, Clone)]
+#[derive(Debug)]
 pub struct Client {
    rpc_client: HttpClient,
    signer: DirectSecp256k1HdWallet,
-    gas_price: GasPrice,
 }

 impl Client {
    pub fn connect_with_signer<U>(
        endpoint: U,
        signer: DirectSecp256k1HdWallet,
-        gas_price: Option<GasPrice>,
    ) -> Result<Self, NymdError>
    where
        U: TryInto<HttpClientUrl, Error = TendermintRpcError>,
    {
        let rpc_client = HttpClient::new(endpoint)?;
-        Ok(Client {
-            rpc_client,
-            signer,
-            gas_price: gas_price.unwrap_or_default(),
-        })
+        Ok(Client { rpc_client, signer })
    }
 }

@@ -679,8 +522,4 @@ impl SigningCosmWasmClient for Client {
    fn signer(&self) -> &DirectSecp256k1HdWallet {
        &self.signer
    }
-
-    fn gas_price(&self) -> &GasPrice {
-        &self.gas_price
-    }
 }
@@ -7,19 +7,15 @@ use crate::nymd::cosmwasm_client::logs::Log;
 use crate::nymd::error::NymdError;
 use cosmrs::crypto::PublicKey;
 use cosmrs::proto::cosmos::auth::v1beta1::BaseAccount;
-use cosmrs::proto::cosmos::base::abci::v1beta1::{
-    GasInfo as ProtoGasInfo, Result as ProtoAbciResult,
-};
-use cosmrs::proto::cosmos::tx::v1beta1::SimulateResponse as ProtoSimulateResponse;
-use cosmrs::proto::cosmwasm::wasm::v1::{
+use cosmrs::proto::cosmwasm::wasm::v1beta1::{
    CodeInfoResponse, ContractCodeHistoryEntry as ProtoContractCodeHistoryEntry,
    ContractCodeHistoryOperationType, ContractInfo as ProtoContractInfo,
 };
-use cosmrs::tendermint::{abci, chain};
-use cosmrs::tx::{AccountNumber, Gas, SequenceNumber};
+use cosmrs::tendermint::chain;
+use cosmrs::tx::{AccountNumber, SequenceNumber};
 use cosmrs::{tx, AccountId, Coin};
 use serde::Serialize;
-use std::convert::{TryFrom, TryInto};
+use std::convert::TryFrom;

 pub type ContractCodeId = u64;

@@ -74,6 +70,18 @@ pub struct Code {

    /// sha256 hash of the code stored
    pub data_hash: Vec<u8>,
+
+    /// An URL to a .tar.gz archive of the source code of the contract,
+    /// which can be used to reproducibly build the Wasm bytecode.
+    ///
+    /// @see https://github.com/CosmWasm/cosmwasm-verify
+    pub source: Option<String>,
+
+    /// A docker image (including version) to reproducibly build the Wasm bytecode from the source code.
+    ///
+    /// @example ```cosmwasm/rust-optimizer:0.8.0```
+    /// @see https://github.com/CosmWasm/cosmwasm-verify
+    pub builder: Option<String>,
 }

 impl TryFrom<CodeInfoResponse> for Code {
@@ -84,16 +92,31 @@ impl TryFrom<CodeInfoResponse> for Code {
            code_id,
            creator,
            data_hash,
+            source,
+            builder,
        } = value;

        let creator = creator
            .parse()
            .map_err(|_| NymdError::MalformedAccountAddress(creator))?;

+        let source = if source.is_empty() {
+            None
+        } else {
+            Some(source)
+        };
+        let builder = if builder.is_empty() {
+            None
+        } else {
+            Some(builder)
+        };
+
        Ok(Code {
            code_id,
            creator,
            data_hash,
+            source,
+            builder,
        })
    }
 }
@@ -219,101 +242,6 @@ impl TryFrom<ProtoContractCodeHistoryEntry> for ContractCodeHistoryEntry {
    }
 }

-#[derive(Debug)]
-pub struct GasInfo {
-    /// GasWanted is the maximum units of work we allow this tx to perform.
-    pub gas_wanted: Gas,
-
-    /// GasUsed is the amount of gas actually consumed.
-    pub gas_used: Gas,
-}
-
-impl From<ProtoGasInfo> for GasInfo {
-    fn from(value: ProtoGasInfo) -> Self {
-        GasInfo {
-            gas_wanted: value.gas_wanted.into(),
-            gas_used: value.gas_used.into(),
-        }
-    }
-}
-
-impl GasInfo {
-    pub fn new(gas_wanted: Gas, gas_used: Gas) -> Self {
-        GasInfo {
-            gas_wanted,
-            gas_used,
-        }
-    }
-}
-
-#[derive(Debug)]
-pub struct AbciResult {
-    /// Data is any data returned from message or handler execution. It MUST be
-    /// length prefixed in order to separate data from multiple message executions.
-    pub data: Vec<u8>,
-
-    /// Log contains the log information from message or handler execution.
-    // todo: try to parse into Log?
-    pub log: String,
-
-    /// Events contains a slice of Event objects that were emitted during message
-    /// or handler execution.
-    pub events: Vec<abci::Event>,
-}
-
-impl TryFrom<ProtoAbciResult> for AbciResult {
-    type Error = NymdError;
-
-    fn try_from(value: ProtoAbciResult) -> Result<Self, Self::Error> {
-        let mut events = Vec::with_capacity(value.events.len());
-
-        for proto_event in value.events.into_iter() {
-            let type_str = proto_event.r#type;
-
-            let mut attributes = Vec::with_capacity(proto_event.attributes.len());
-            for proto_attribute in proto_event.attributes.into_iter() {
-                let stringified_ked = String::from_utf8(proto_attribute.key)
-                    .map_err(|_| NymdError::DeserializationError("EventAttributeKey".to_owned()))?;
-                let stringified_value = String::from_utf8(proto_attribute.value)
-                    .map_err(|_| NymdError::DeserializationError("EventAttributeKey".to_owned()))?;
-
-                attributes.push(abci::tag::Tag {
-                    key: stringified_ked.parse().unwrap(),
-                    value: stringified_value.parse().unwrap(),
-                })
-            }
-
-            events.push(abci::Event {
-                type_str,
-                attributes,
-            })
-        }
-
-        Ok(AbciResult {
-            data: value.data,
-            log: value.log,
-            events,
-        })
-    }
-}
-
-#[derive(Debug)]
-pub struct SimulateResponse {
-    pub gas_info: Option<GasInfo>,
-    pub result: Option<AbciResult>,
-}
-
-impl TryFrom<ProtoSimulateResponse> for SimulateResponse {
-    type Error = NymdError;
-
-    fn try_from(value: ProtoSimulateResponse) -> Result<Self, Self::Error> {
-        Ok(SimulateResponse {
-            gas_info: value.gas_info.map(|gas_info| gas_info.into()),
-            result: value.result.map(|result| result.try_into()).transpose()?,
-        })
-    }
-}
-
 // ##############################################################################
 // types specific to the signing client (perhaps they should go to separate file)
 // ##############################################################################
@@ -326,6 +254,21 @@ pub struct SignerData {
    pub chain_id: chain::Id,
 }

+#[derive(Debug)]
+pub struct UploadMeta {
+    /// An URL to a .tar.gz archive of the source code of the contract,
+    /// which can be used to reproducibly build the Wasm bytecode.
+    ///
+    /// @see https://github.com/CosmWasm/cosmwasm-verify
+    pub source: Option<String>,
+
+    /// A docker image (including version) to reproducibly build the Wasm bytecode from the source code.
+    ///
+    /// @example ```cosmwasm/rust-optimizer:0.8.0```
+    /// @see https://github.com/CosmWasm/cosmwasm-verify
+    pub builder: Option<String>,
+}
+
 #[derive(Debug)]
 pub struct UploadResult {
    /// Size of the original wasm code in bytes
@@ -347,8 +290,6 @@ pub struct UploadResult {

    /// Transaction hash (might be used as transaction ID)
    pub transaction_hash: tx::Hash,
-
-    pub gas_info: GasInfo,
 }

 #[derive(Debug)]
@@ -375,8 +316,6 @@ pub struct InstantiateResult {

    /// Transaction hash (might be used as transaction ID)
    pub transaction_hash: tx::Hash,
-
-    pub gas_info: GasInfo,
 }

 #[derive(Debug)]
@@ -385,8 +324,6 @@ pub struct ChangeAdminResult {

    /// Transaction hash (might be used as transaction ID)
    pub transaction_hash: tx::Hash,
-
-    pub gas_info: GasInfo,
 }

 #[derive(Debug)]
@@ -395,8 +332,6 @@ pub struct MigrateResult {

    /// Transaction hash (might be used as transaction ID)
    pub transaction_hash: tx::Hash,
-
-    pub gas_info: GasInfo,
 }

 #[derive(Debug)]
@@ -405,6 +340,4 @@ pub struct ExecuteResult {

    /// Transaction hash (might be used as transaction ID)
    pub transaction_hash: tx::Hash,
-
-    pub gas_info: GasInfo,
 }
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::nymd::cosmwasm_client::types::ContractCodeId;
-use cosmrs::tendermint::{abci, block};
+use cosmrs::tendermint::block;
 use cosmrs::{bip32, tx, AccountId};
 use std::io;
 use thiserror::Error;
@@ -102,12 +102,6 @@ pub enum NymdError {

    #[error("The provided gas price is malformed")]
    MalformedGasPrice,
-
-    #[error("Failed to estimate gas price for the transaction")]
-    GasEstimationFailure,
-
-    #[error("Abci query failed with code {0} - {1}")]
-    AbciError(u32, abci::Log),
 }

 impl NymdError {
@@ -1,33 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-use cosmrs::tx;
-
-pub mod gas_price;
-pub mod helpers;
-
-pub const DEFAULT_SIMULATED_GAS_MULTIPLIER: f32 = 1.3;
-
-#[derive(Debug, Clone)]
-pub enum Fee {
-    Manual(tx::Fee),
-    Auto(Option<f32>),
-}
-
-impl From<tx::Fee> for Fee {
-    fn from(fee: tx::Fee) -> Self {
-        Fee::Manual(fee)
-    }
-}
-
-impl From<f32> for Fee {
-    fn from(multiplier: f32) -> Self {
-        Fee::Auto(Some(multiplier))
-    }
-}
-
-impl Default for Fee {
-    fn default() -> Self {
-        Fee::Auto(Some(DEFAULT_SIMULATED_GAS_MULTIPLIER))
-    }
-}
@@ -6,9 +6,9 @@ use cosmrs::tx::{Fee, Gas};
 use cosmrs::Coin;
 use serde::{Deserialize, Serialize};
 use std::fmt;
+use ts_rs::TS;

-#[cfg_attr(feature = "ts-rs", derive(ts_rs::TS))]
-#[derive(Debug, Copy, Clone, Ord, PartialOrd, Eq, PartialEq, Hash, Serialize, Deserialize)]
+#[derive(Debug, Copy, Clone, Ord, PartialOrd, Eq, PartialEq, Hash, Serialize, Deserialize, TS)]
 pub enum Operation {
    Upload,
    Init,
@@ -17,29 +17,16 @@ pub enum Operation {
    Send,

    BondMixnode,
-    BondMixnodeOnBehalf,
    UnbondMixnode,
-    UnbondMixnodeOnBehalf,
    DelegateToMixnode,
-    DelegateToMixnodeOnBehalf,
    UndelegateFromMixnode,
-    UndelegateFromMixnodeOnBehalf,

    BondGateway,
-    BondGatewayOnBehalf,
    UnbondGateway,
-    UnbondGatewayOnBehalf,
+    DelegateToGateway,
+    UndelegateFromGateway,

-    UpdateContractSettings,
-
-    BeginMixnodeRewarding,
-    FinishMixnodeRewarding,
-
-    TrackUnbondGateway,
-    TrackUnbondMixnode,
-    WithdrawVestedCoins,
-    TrackUndelegation,
-    CreatePeriodicVestingAccount,
+    UpdateStateParams,
 }

 pub(crate) fn calculate_fee(gas_price: &GasPrice, gas_limit: Gas) -> Coin {
@@ -55,27 +42,14 @@ impl fmt::Display for Operation {
            Operation::ChangeAdmin => f.write_str("ChangeAdmin"),
            Operation::Send => f.write_str("Send"),
            Operation::BondMixnode => f.write_str("BondMixnode"),
-            Operation::BondMixnodeOnBehalf => f.write_str("BondMixnodeOnBehalf"),
            Operation::UnbondMixnode => f.write_str("UnbondMixnode"),
-            Operation::UnbondMixnodeOnBehalf => f.write_str("UnbondMixnodeOnBehalf"),
-            Operation::BondGateway => f.write_str("BondGateway"),
-            Operation::BondGatewayOnBehalf => f.write_str("BondGatewayOnBehalf"),
-            Operation::UnbondGateway => f.write_str("UnbondGateway"),
-            Operation::UnbondGatewayOnBehalf => f.write_str("UnbondGatewayOnBehalf"),
            Operation::DelegateToMixnode => f.write_str("DelegateToMixnode"),
-            Operation::DelegateToMixnodeOnBehalf => f.write_str("DelegateToMixnodeOnBehalf"),
            Operation::UndelegateFromMixnode => f.write_str("UndelegateFromMixnode"),
-            Operation::UndelegateFromMixnodeOnBehalf => {
-                f.write_str("UndelegateFromMixnodeOnBehalf")
-            }
-            Operation::UpdateContractSettings => f.write_str("UpdateContractSettings"),
-            Operation::BeginMixnodeRewarding => f.write_str("BeginMixnodeRewarding"),
-            Operation::FinishMixnodeRewarding => f.write_str("FinishMixnodeRewarding"),
-            Operation::TrackUnbondGateway => f.write_str("TrackUnbondGateway"),
-            Operation::TrackUnbondMixnode => f.write_str("TrackUnbondMixnode"),
-            Operation::WithdrawVestedCoins => f.write_str("WithdrawVestedCoins"),
-            Operation::TrackUndelegation => f.write_str("TrackUndelegation"),
-            Operation::CreatePeriodicVestingAccount => f.write_str("CreatePeriodicVestingAccount"),
+            Operation::BondGateway => f.write_str("BondGateway"),
+            Operation::UnbondGateway => f.write_str("UnbondGateway"),
+            Operation::DelegateToGateway => f.write_str("DelegateToGateway"),
+            Operation::UndelegateFromGateway => f.write_str("UndelegateFromGateway"),
+            Operation::UpdateStateParams => f.write_str("UpdateStateParams"),
        }
    }
 }
@@ -84,34 +58,23 @@ impl Operation {
    // TODO: some value tweaking
    pub fn default_gas_limit(&self) -> Gas {
        match self {
-            Operation::Upload => 3_000_000u64.into(),
+            Operation::Upload => 2_500_000u64.into(),
            Operation::Init => 500_000u64.into(),
            Operation::Migrate => 200_000u64.into(),
            Operation::ChangeAdmin => 80_000u64.into(),
            Operation::Send => 80_000u64.into(),

            Operation::BondMixnode => 175_000u64.into(),
-            Operation::BondMixnodeOnBehalf => 200_000u64.into(),
            Operation::UnbondMixnode => 175_000u64.into(),
-            Operation::UnbondMixnodeOnBehalf => 175_000u64.into(),
            Operation::DelegateToMixnode => 175_000u64.into(),
-            Operation::DelegateToMixnodeOnBehalf => 175_000u64.into(),
            Operation::UndelegateFromMixnode => 175_000u64.into(),
-            Operation::UndelegateFromMixnodeOnBehalf => 175_000u64.into(),

            Operation::BondGateway => 175_000u64.into(),
-            Operation::BondGatewayOnBehalf => 200_000u64.into(),
            Operation::UnbondGateway => 175_000u64.into(),
-            Operation::UnbondGatewayOnBehalf => 200_000u64.into(),
+            Operation::DelegateToGateway => 175_000u64.into(),
+            Operation::UndelegateFromGateway => 175_000u64.into(),

-            Operation::UpdateContractSettings => 175_000u64.into(),
-            Operation::BeginMixnodeRewarding => 175_000u64.into(),
-            Operation::FinishMixnodeRewarding => 175_000u64.into(),
-            Operation::TrackUnbondGateway => 175_000u64.into(),
-            Operation::TrackUnbondMixnode => 175_000u64.into(),
-            Operation::WithdrawVestedCoins => 175_000u64.into(),
-            Operation::TrackUndelegation => 175_000u64.into(),
-            Operation::CreatePeriodicVestingAccount => 175_000u64.into(),
+            Operation::UpdateStateParams => 175_000u64.into(),
        }
    }

@@ -125,8 +88,9 @@ impl Operation {
        Fee::from_amount_and_gas(fee, gas_limit)
    }

-    pub fn default_fee(&self, gas_price: &GasPrice) -> Fee {
-        Self::determine_custom_fee(gas_price, self.default_gas_limit())
+    pub(crate) fn determine_fee(&self, gas_price: &GasPrice, gas_limit: Option<Gas>) -> Fee {
+        let gas_limit = gas_limit.unwrap_or_else(|| self.default_gas_limit());
+        Self::determine_custom_fee(gas_price, gas_limit)
    }
 }

@@ -38,7 +38,7 @@ impl<'a> Mul<Gas> for &'a GasPrice {
        // however, realistically that is impossible to happen as the resultant value
        // would have to be way higher than our token limit of 10^15 (1 billion of tokens * 1 million for denomination)
        // and max value of u128 is approximately 10^38
-        if limit_uint128 * gas_price_numerator > amount * gas_price_denominator {
+        if limit_uint128.u128() * gas_price_numerator > amount.u128() * gas_price_denominator {
            amount += Uint128::new(1);
        }

@@ -1,8 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-mod vesting_query_client;
-mod vesting_signing_client;
-
-pub use vesting_query_client::VestingQueryClient;
-pub use vesting_signing_client::VestingSigningClient;
@@ -1,176 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-pub use crate::nymd::cosmwasm_client::client::CosmWasmClient;
-use crate::nymd::error::NymdError;
-use crate::nymd::NymdClient;
-use async_trait::async_trait;
-use cosmwasm_std::{Coin, Timestamp};
-use vesting_contract::messages::QueryMsg as VestingQueryMsg;
-
-#[async_trait]
-pub trait VestingQueryClient {
-    async fn locked_coins(
-        &self,
-        address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError>;
-
-    async fn spendable_coins(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError>;
-
-    async fn vested_coins(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError>;
-
-    async fn vesting_coins(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError>;
-
-    async fn vesting_start_time(
-        &self,
-        vesting_account_address: &str,
-    ) -> Result<Timestamp, NymdError>;
-
-    async fn vesting_end_time(&self, vesting_account_address: &str)
-        -> Result<Timestamp, NymdError>;
-
-    async fn original_vesting(&self, vesting_account_address: &str) -> Result<Coin, NymdError>;
-
-    async fn delegated_free(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError>;
-
-    async fn delegated_vesting(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError>;
-}
-
-#[async_trait]
-impl<C: CosmWasmClient + Sync + Send> VestingQueryClient for NymdClient<C> {
-    async fn locked_coins(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError> {
-        let request = VestingQueryMsg::LockedCoins {
-            vesting_account_address: vesting_account_address.to_string(),
-            block_time,
-        };
-        self.client
-            .query_contract_smart(self.vesting_contract_address()?, &request)
-            .await
-    }
-
-    async fn spendable_coins(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError> {
-        let request = VestingQueryMsg::SpendableCoins {
-            vesting_account_address: vesting_account_address.to_string(),
-            block_time,
-        };
-        self.client
-            .query_contract_smart(self.vesting_contract_address()?, &request)
-            .await
-    }
-    async fn vested_coins(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError> {
-        let request = VestingQueryMsg::GetVestedCoins {
-            vesting_account_address: vesting_account_address.to_string(),
-            block_time,
-        };
-        self.client
-            .query_contract_smart(self.vesting_contract_address()?, &request)
-            .await
-    }
-    async fn vesting_coins(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError> {
-        let request = VestingQueryMsg::GetVestingCoins {
-            vesting_account_address: vesting_account_address.to_string(),
-            block_time,
-        };
-        self.client
-            .query_contract_smart(self.vesting_contract_address()?, &request)
-            .await
-    }
-
-    async fn vesting_start_time(
-        &self,
-        vesting_account_address: &str,
-    ) -> Result<Timestamp, NymdError> {
-        let request = VestingQueryMsg::GetStartTime {
-            vesting_account_address: vesting_account_address.to_string(),
-        };
-        self.client
-            .query_contract_smart(self.vesting_contract_address()?, &request)
-            .await
-    }
-
-    async fn vesting_end_time(
-        &self,
-        vesting_account_address: &str,
-    ) -> Result<Timestamp, NymdError> {
-        let request = VestingQueryMsg::GetEndTime {
-            vesting_account_address: vesting_account_address.to_string(),
-        };
-        self.client
-            .query_contract_smart(self.vesting_contract_address()?, &request)
-            .await
-    }
-
-    async fn original_vesting(&self, vesting_account_address: &str) -> Result<Coin, NymdError> {
-        let request = VestingQueryMsg::GetOriginalVesting {
-            vesting_account_address: vesting_account_address.to_string(),
-        };
-        self.client
-            .query_contract_smart(self.vesting_contract_address()?, &request)
-            .await
-    }
-
-    async fn delegated_free(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError> {
-        let request = VestingQueryMsg::GetDelegatedFree {
-            vesting_account_address: vesting_account_address.to_string(),
-            block_time,
-        };
-        self.client
-            .query_contract_smart(self.vesting_contract_address()?, &request)
-            .await
-    }
-
-    async fn delegated_vesting(
-        &self,
-        vesting_account_address: &str,
-        block_time: Option<Timestamp>,
-    ) -> Result<Coin, NymdError> {
-        let request = VestingQueryMsg::GetDelegatedVesting {
-            vesting_account_address: vesting_account_address.to_string(),
-            block_time,
-        };
-        self.client
-            .query_contract_smart(self.vesting_contract_address()?, &request)
-            .await
-    }
-}
@@ -1,294 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-pub use crate::nymd::cosmwasm_client::signing_client::SigningCosmWasmClient;
-use crate::nymd::cosmwasm_client::types::ExecuteResult;
-use crate::nymd::error::NymdError;
-use crate::nymd::fee::helpers::Operation;
-use crate::nymd::{cosmwasm_coin_to_cosmos_coin, NymdClient};
-use async_trait::async_trait;
-use cosmwasm_std::Coin;
-use mixnet_contract::{Gateway, IdentityKey, IdentityKeyRef, MixNode};
-use vesting_contract::messages::ExecuteMsg as VestingExecuteMsg;
-
-#[async_trait]
-pub trait VestingSigningClient {
-    async fn vesting_bond_gateway(
-        &self,
-        gateway: Gateway,
-        owner_signature: &str,
-        pledge: Coin,
-    ) -> Result<ExecuteResult, NymdError>;
-
-    async fn vesting_unbond_gateway(&self) -> Result<ExecuteResult, NymdError>;
-
-    async fn vesting_track_unbond_gateway(
-        &self,
-        owner: &str,
-        amount: Coin,
-    ) -> Result<ExecuteResult, NymdError>;
-
-    async fn vesting_bond_mixnode(
-        &self,
-        mix_node: MixNode,
-        owner_signature: &str,
-        pledge: Coin,
-    ) -> Result<ExecuteResult, NymdError>;
-    async fn vesting_unbond_mixnode(&self) -> Result<ExecuteResult, NymdError>;
-
-    async fn vesting_track_unbond_mixnode(
-        &self,
-        owner: &str,
-        amount: Coin,
-    ) -> Result<ExecuteResult, NymdError>;
-
-    async fn withdraw_vested_coins(&self, amount: Coin) -> Result<ExecuteResult, NymdError>;
-
-    async fn vesting_track_undelegation(
-        &self,
-        address: &str,
-        mix_identity: IdentityKey,
-        amount: Coin,
-    ) -> Result<ExecuteResult, NymdError>;
-
-    async fn vesting_delegate_to_mixnode<'a>(
-        &self,
-        mix_identity: IdentityKeyRef<'a>,
-        amount: &Coin,
-    ) -> Result<ExecuteResult, NymdError>;
-
-    async fn vesting_undelegate_from_mixnode<'a>(
-        &self,
-        mix_identity: IdentityKeyRef<'a>,
-    ) -> Result<ExecuteResult, NymdError>;
-
-    async fn create_periodic_vesting_account(
-        &self,
-        address: &str,
-        start_time: Option<u64>,
-        amount: Coin,
-    ) -> Result<ExecuteResult, NymdError>;
-}
-
-#[async_trait]
-impl<C: SigningCosmWasmClient + Sync + Send> VestingSigningClient for NymdClient<C> {
-    async fn vesting_bond_gateway(
-        &self,
-        gateway: Gateway,
-        owner_signature: &str,
-        pledge: Coin,
-    ) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::BondGateway);
-        let req = VestingExecuteMsg::BondGateway {
-            gateway,
-            owner_signature: owner_signature.to_string(),
-        };
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::BondGateway",
-                vec![cosmwasm_coin_to_cosmos_coin(pledge)],
-            )
-            .await
-    }
-
-    async fn vesting_unbond_gateway(&self) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::UnbondGateway);
-        let req = VestingExecuteMsg::UnbondGateway {};
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::UnbondGateway",
-                vec![],
-            )
-            .await
-    }
-
-    async fn vesting_track_unbond_gateway(
-        &self,
-        owner: &str,
-        amount: Coin,
-    ) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::TrackUnbondGateway);
-        let req = VestingExecuteMsg::TrackUnbondGateway {
-            owner: owner.to_string(),
-            amount,
-        };
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::TrackUnbondGateway",
-                vec![],
-            )
-            .await
-    }
-
-    async fn vesting_bond_mixnode(
-        &self,
-        mix_node: MixNode,
-        owner_signature: &str,
-        pledge: Coin,
-    ) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::BondMixnode);
-        let req = VestingExecuteMsg::BondMixnode {
-            mix_node,
-            owner_signature: owner_signature.to_string(),
-        };
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::BondMixnode",
-                vec![cosmwasm_coin_to_cosmos_coin(pledge)],
-            )
-            .await
-    }
-
-    async fn vesting_unbond_mixnode(&self) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::UnbondMixnode);
-        let req = VestingExecuteMsg::UnbondMixnode {};
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::UnbondMixnode",
-                vec![],
-            )
-            .await
-    }
-
-    async fn vesting_track_unbond_mixnode(
-        &self,
-        owner: &str,
-        amount: Coin,
-    ) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::TrackUnbondMixnode);
-        let req = VestingExecuteMsg::TrackUnbondMixnode {
-            owner: owner.to_string(),
-            amount,
-        };
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::TrackUnbondMixnode",
-                vec![],
-            )
-            .await
-    }
-
-    async fn withdraw_vested_coins(&self, amount: Coin) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::WithdrawVestedCoins);
-        let req = VestingExecuteMsg::WithdrawVestedCoins { amount };
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::WithdrawVested",
-                vec![],
-            )
-            .await
-    }
-
-    async fn vesting_track_undelegation(
-        &self,
-        address: &str,
-        mix_identity: IdentityKey,
-        amount: Coin,
-    ) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::TrackUndelegation);
-        let req = VestingExecuteMsg::TrackUndelegation {
-            owner: address.to_string(),
-            mix_identity,
-            amount,
-        };
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::TrackUndelegation",
-                vec![],
-            )
-            .await
-    }
-    async fn vesting_delegate_to_mixnode<'a>(
-        &self,
-        mix_identity: IdentityKeyRef<'a>,
-        amount: &Coin,
-    ) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::DelegateToMixnode);
-        let req = VestingExecuteMsg::DelegateToMixnode {
-            mix_identity: mix_identity.into(),
-        };
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::DeledateToMixnode",
-                vec![cosmwasm_coin_to_cosmos_coin(amount.to_owned())],
-            )
-            .await
-    }
-    async fn vesting_undelegate_from_mixnode<'a>(
-        &self,
-        mix_identity: IdentityKeyRef<'a>,
-    ) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::UndelegateFromMixnode);
-        let req = VestingExecuteMsg::UndelegateFromMixnode {
-            mix_identity: mix_identity.into(),
-        };
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::UndelegateFromMixnode",
-                vec![],
-            )
-            .await
-    }
-    async fn create_periodic_vesting_account(
-        &self,
-        address: &str,
-        start_time: Option<u64>,
-        amount: Coin,
-    ) -> Result<ExecuteResult, NymdError> {
-        let fee = self.operation_fee(Operation::CreatePeriodicVestingAccount);
-        let req = VestingExecuteMsg::CreateAccount {
-            address: address.to_string(),
-            start_time,
-        };
-        self.client
-            .execute(
-                self.address(),
-                self.vesting_contract_address()?,
-                &req,
-                fee,
-                "VestingContract::CreatePeriodicVestingAccount",
-                vec![cosmwasm_coin_to_cosmos_coin(amount)],
-            )
-            .await
-    }
-}
@@ -10,7 +10,7 @@ use cosmrs::tx::SignDoc;
 use cosmrs::{tx, AccountId};

 /// Derivation information required to derive a keypair and an address from a mnemonic.
-#[derive(Debug, Clone)]
+#[derive(Debug)]
 struct Secp256k1Derivation {
    hd_path: DerivationPath,
    prefix: String,
@@ -40,7 +40,7 @@ impl AccountData {

 type Secp256k1Keypair = (SigningKey, PublicKey);

-#[derive(Debug, Clone)]
+#[derive(Debug)]
 pub struct DirectSecp256k1HdWallet {
    /// Base secret
    secret: bip39::Mnemonic,
@@ -207,9 +207,9 @@ mod tests {
    fn generating_account_addresses() {
        // test vectors produced from our js wallet
        let mnemonic_address = vec![
-            ("crush minute paddle tobacco message debate cabin peace bar jacket execute twenty winner view sure mask popular couch penalty fragile demise fresh pizza stove", "nymt1jw6mp7d5xqc7w6xm79lha27glmd0vdt339me94"),
-            ("acquire rebel spot skin gun such erupt pull swear must define ill chief turtle today flower chunk truth battle claw rigid detail gym feel", "nymt1h5hgn94nsq4kh99rjj794hr5h5q6yfm23rjshv"),
-            ("step income throw wheat mobile ship wave drink pool sudden upset jaguar bar globe rifle spice frost bless glimpse size regular carry aspect ball", "nymt17n9flp6jflljg6fp05dsy07wcprf2uuufgn4d4")
+            ("crush minute paddle tobacco message debate cabin peace bar jacket execute twenty winner view sure mask popular couch penalty fragile demise fresh pizza stove", "punk1jw6mp7d5xqc7w6xm79lha27glmd0vdt32a3fj2"),
+            ("acquire rebel spot skin gun such erupt pull swear must define ill chief turtle today flower chunk truth battle claw rigid detail gym feel", "punk1h5hgn94nsq4kh99rjj794hr5h5q6yfm22mcqqn"),
+            ("step income throw wheat mobile ship wave drink pool sudden upset jaguar bar globe rifle spice frost bless glimpse size regular carry aspect ball", "punk17n9flp6jflljg6fp05dsy07wcprf2uuujse962")
        ];

        for (mnemonic, address) in mnemonic_address.into_iter() {
@@ -1,4 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
@@ -8,4 +8,4 @@ description = "Crutch library until there is proper SerDe support for coconut st
 serde = { version = "1.0", features = ["derive"] }
 getset = "0.1.1"

-nymcoconut = {path = "../nymcoconut" }
+coconut-rs = { git = "https://github.com/nymtech/coconut.git", branch = "0.5.0" }
@@ -4,7 +4,7 @@
 use getset::{CopyGetters, Getters};
 use serde::{Deserialize, Serialize};

-pub use nymcoconut::*;
+pub use coconut_rs::*;

 #[derive(Serialize, Deserialize, Getters, CopyGetters, Clone)]
 pub struct Credential {
@@ -42,7 +42,7 @@ impl Credential {
            .iter()
            .map(hash_to_scalar)
            .collect::<Vec<Attribute>>();
-        nymcoconut::verify_credential(&params, verification_key, &self.theta, &public_attributes)
+        coconut_rs::verify_credential(&params, verification_key, &self.theta, &public_attributes)
    }
 }

@@ -84,7 +84,7 @@ pub struct BlindSignRequestBody {
    #[getset(get = "pub")]
    blind_sign_request: BlindSignRequest,
    #[getset(get = "pub")]
-    public_key: nymcoconut::PublicKey,
+    public_key: coconut_rs::PublicKey,
    public_attributes: Vec<String>,
    #[getset(get = "pub")]
    total_params: u32,
@@ -92,13 +92,13 @@ pub struct BlindSignRequestBody {

 impl BlindSignRequestBody {
    pub fn new(
-        blind_sign_request: &BlindSignRequest,
-        public_key: &nymcoconut::PublicKey,
+        blind_sign_request: BlindSignRequest,
+        public_key: &coconut_rs::PublicKey,
        public_attributes: &[Attribute],
        total_params: u32,
    ) -> BlindSignRequestBody {
        BlindSignRequestBody {
-            blind_sign_request: blind_sign_request.clone(),
+            blind_sign_request,
            public_key: public_key.clone(),
            public_attributes: public_attributes
                .iter()
@@ -11,6 +11,4 @@ url = "2.2"

 # I guess temporarily until we get serde support in coconut up and running
 coconut-interface = { path = "../coconut-interface" }
-crypto = { path = "../crypto" }
-network-defaults = { path = "../network-defaults" }
 validator-client = { path = "../client-libs/validator-client" }
@@ -0,0 +1,48 @@
+// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+// for time being assume the bandwidth credential consists of public identity of the requester
+// and private (though known... just go along with it) infinite bandwidth value
+// right now this has no double-spending protection, spender binding, etc
+// it's the simplest possible case
+
+use url::Url;
+
+use crate::error::Error;
+use crate::utils::{obtain_aggregate_signature, prepare_credential_for_spending};
+use coconut_interface::{hash_to_scalar, Credential, Parameters, Signature, VerificationKey};
+
+const BANDWIDTH_VALUE: u64 = 10 * 1024 * 1024 * 1024; // 10 GB
+
+pub const PUBLIC_ATTRIBUTES: u32 = 1;
+pub const PRIVATE_ATTRIBUTES: u32 = 1;
+pub const TOTAL_ATTRIBUTES: u32 = PUBLIC_ATTRIBUTES + PRIVATE_ATTRIBUTES;
+
+// TODO: this definitely has to be moved somewhere else. It's just a temporary solution
+pub async fn obtain_signature(raw_identity: &[u8], validators: &[Url]) -> Result<Signature, Error> {
+    let public_attributes = vec![hash_to_scalar(BANDWIDTH_VALUE.to_be_bytes())];
+    let private_attributes = vec![hash_to_scalar(raw_identity)];
+
+    let params = Parameters::new(TOTAL_ATTRIBUTES)?;
+
+    obtain_aggregate_signature(&params, &public_attributes, &private_attributes, validators).await
+}
+
+pub fn prepare_for_spending(
+    raw_identity: &[u8],
+    signature: &Signature,
+    verification_key: &VerificationKey,
+) -> Result<Credential, Error> {
+    let public_attributes = vec![BANDWIDTH_VALUE.to_be_bytes().to_vec()];
+    let private_attributes = vec![raw_identity.to_vec()];
+
+    let params = Parameters::new(TOTAL_ATTRIBUTES)?;
+
+    prepare_credential_for_spending(
+        &params,
+        public_attributes,
+        private_attributes,
+        signature,
+        verification_key,
+    )
+}
@@ -1,77 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-// for time being assume the bandwidth credential consists of public identity of the requester
-// and private (though known... just go along with it) infinite bandwidth value
-// right now this has no double-spending protection, spender binding, etc
-// it's the simplest possible case
-
-use coconut_interface::{
-    Credential, Parameters, PrivateAttribute, PublicAttribute, Signature, VerificationKey,
-};
-use network_defaults::BANDWIDTH_VALUE;
-use url::Url;
-
-use crate::error::Error;
-
-use super::utils::{obtain_aggregate_signature, prepare_credential_for_spending};
-
-pub const PUBLIC_ATTRIBUTES: u32 = 2;
-pub const PRIVATE_ATTRIBUTES: u32 = 2;
-pub const TOTAL_ATTRIBUTES: u32 = PUBLIC_ATTRIBUTES + PRIVATE_ATTRIBUTES;
-
-pub struct BandwidthVoucherAttributes {
-    // a random secret value generated by the client used for double-spending detection
-    pub serial_number: PrivateAttribute,
-    // a random secret value generated by the client used to bind multiple credentials together
-    pub binding_number: PrivateAttribute,
-    // the value (e.g., bandwidth) encoded in this voucher
-    pub voucher_value: PublicAttribute,
-    // a field with public information, e.g., type of voucher, epoch etc.
-    pub voucher_info: PublicAttribute,
-}
-
-impl BandwidthVoucherAttributes {
-    pub fn get_public_attributes(&self) -> Vec<PublicAttribute> {
-        vec![self.voucher_value, self.voucher_info]
-    }
-
-    pub fn get_private_attributes(&self) -> Vec<PrivateAttribute> {
-        vec![self.serial_number, self.binding_number]
-    }
-}
-
-// TODO: this definitely has to be moved somewhere else. It's just a temporary solution
-pub async fn obtain_signature(
-    params: &Parameters,
-    attributes: &BandwidthVoucherAttributes,
-    validators: &[Url],
-) -> Result<Signature, Error> {
-    let public_attributes = attributes.get_public_attributes();
-    let private_attributes = attributes.get_private_attributes();
-
-    obtain_aggregate_signature(params, &public_attributes, &private_attributes, validators).await
-}
-
-pub fn prepare_for_spending(
-    raw_identity: &[u8],
-    signature: &Signature,
-    attributes: &BandwidthVoucherAttributes,
-    verification_key: &VerificationKey,
-) -> Result<Credential, Error> {
-    let public_attributes = vec![
-        raw_identity.to_vec(),
-        BANDWIDTH_VALUE.to_be_bytes().to_vec(),
-    ];
-
-    let params = Parameters::new(TOTAL_ATTRIBUTES)?;
-
-    prepare_credential_for_spending(
-        &params,
-        public_attributes,
-        attributes.serial_number,
-        attributes.binding_number,
-        signature,
-        verification_key,
-    )
-}
@@ -1,5 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-pub mod bandwidth;
-pub mod utils;
@@ -1,8 +1,8 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-pub mod coconut;
+pub mod bandwidth;
 pub mod error;
-pub mod token;
+mod utils;

-pub use coconut::utils::{obtain_aggregate_signature, obtain_aggregate_verification_key};
+pub use utils::{obtain_aggregate_signature, obtain_aggregate_verification_key};
@@ -1,140 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-use crypto::asymmetric::identity::{PublicKey, Signature, PUBLIC_KEY_LENGTH, SIGNATURE_LENGTH};
-
-use crate::error::Error;
-use std::convert::TryInto;
-
-#[cfg(not(feature = "coconut"))]
-pub struct TokenCredential {
-    verification_key: PublicKey,
-    gateway_identity: PublicKey,
-    bandwidth: u64,
-    signature: Signature,
-}
-
-#[cfg(not(feature = "coconut"))]
-impl TokenCredential {
-    pub fn new(
-        verification_key: PublicKey,
-        gateway_identity: PublicKey,
-        bandwidth: u64,
-        signature: Signature,
-    ) -> Self {
-        TokenCredential {
-            verification_key,
-            gateway_identity,
-            bandwidth,
-            signature,
-        }
-    }
-
-    pub fn verification_key(&self) -> PublicKey {
-        self.verification_key
-    }
-
-    pub fn gateway_identity(&self) -> PublicKey {
-        self.gateway_identity
-    }
-
-    pub fn bandwidth(&self) -> u64 {
-        self.bandwidth
-    }
-
-    pub fn signature_bytes(&self) -> [u8; 64] {
-        self.signature.to_bytes()
-    }
-
-    pub fn verify_signature(&self) -> bool {
-        let message: Vec<u8> = self
-            .verification_key
-            .to_bytes()
-            .iter()
-            .chain(self.gateway_identity.to_bytes().iter())
-            .copied()
-            .collect();
-        self.verification_key
-            .verify(&message, &self.signature)
-            .is_ok()
-    }
-
-    pub fn to_bytes(&self) -> Vec<u8> {
-        self.verification_key
-            .to_bytes()
-            .iter()
-            .chain(self.gateway_identity.to_bytes().iter())
-            .chain(self.bandwidth.to_be_bytes().iter())
-            .chain(self.signature.to_bytes().iter())
-            .copied()
-            .collect()
-    }
-
-    pub fn from_bytes(b: &[u8]) -> Result<Self, Error> {
-        if b.len() != 2 * PUBLIC_KEY_LENGTH + 8 + SIGNATURE_LENGTH {
-            return Err(Error::BandwidthCredentialError);
-        }
-        let verification_key = PublicKey::from_bytes(&b[..PUBLIC_KEY_LENGTH])
-            .map_err(|_| Error::BandwidthCredentialError)?;
-        let gateway_identity = PublicKey::from_bytes(&b[PUBLIC_KEY_LENGTH..2 * PUBLIC_KEY_LENGTH])
-            .map_err(|_| Error::BandwidthCredentialError)?;
-        let bandwidth = u64::from_be_bytes(
-            b[2 * PUBLIC_KEY_LENGTH..2 * PUBLIC_KEY_LENGTH + 8]
-                .try_into()
-                // unwrapping is safe because we know we have 8 bytes
-                .unwrap(),
-        );
-        let signature = Signature::from_bytes(&b[2 * PUBLIC_KEY_LENGTH + 8..])
-            .map_err(|_| Error::BandwidthCredentialError)?;
-        Ok(TokenCredential {
-            verification_key,
-            gateway_identity,
-            bandwidth,
-            signature,
-        })
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[cfg(not(feature = "coconut"))]
-    #[test]
-    fn token_serde() {
-        // pre-generated, valid values
-        let verification_key = PublicKey::from_bytes(&[
-            103, 105, 71, 177, 149, 245, 26, 32, 73, 121, 76, 50, 94, 88, 119, 231, 91, 229, 167,
-            56, 39, 62, 185, 39, 83, 246, 153, 27, 17, 155, 109, 73,
-        ])
-        .unwrap();
-        let gateway_identity = PublicKey::from_bytes(&[
-            37, 113, 137, 189, 157, 82, 35, 2, 187, 136, 61, 119, 98, 5, 245, 82, 46, 124, 67, 45,
-            165, 255, 53, 222, 185, 252, 6, 148, 128, 15, 206, 19,
-        ])
-        .unwrap();
-        let signature = Signature::from_bytes(&[
-            117, 251, 162, 217, 57, 2, 50, 210, 206, 81, 236, 90, 74, 201, 69, 237, 240, 247, 214,
-            158, 220, 89, 235, 222, 85, 134, 73, 73, 8, 60, 25, 39, 183, 28, 83, 193, 31, 174, 25,
-            24, 38, 215, 205, 228, 159, 135, 35, 4, 171, 59, 100, 157, 12, 249, 77, 52, 143, 4, 32,
-            28, 147, 70, 182, 14,
-        ])
-        .unwrap();
-        let credential = TokenCredential::new(verification_key, gateway_identity, 1024, signature);
-        let serialized_credential = credential.to_bytes();
-        let deserialized_credential = TokenCredential::from_bytes(&serialized_credential).unwrap();
-        assert_eq!(
-            credential.verification_key,
-            deserialized_credential.verification_key
-        );
-        assert_eq!(
-            credential.gateway_identity,
-            deserialized_credential.gateway_identity
-        );
-        assert_eq!(credential.bandwidth, deserialized_credential.bandwidth);
-        assert_eq!(
-            credential.signature.to_bytes(),
-            deserialized_credential.signature.to_bytes()
-        );
-    }
-}
@@ -1,4 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-pub mod bandwidth;
@@ -1,16 +1,14 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use crate::error::Error;
 use coconut_interface::{
-    aggregate_signature_shares, aggregate_verification_keys, prepare_blind_sign,
-    prove_bandwidth_credential, Attribute, BlindSignRequestBody, Credential, Parameters, Signature,
+    aggregate_signature_shares, aggregate_verification_keys, hash_to_scalar, prepare_blind_sign,
+    prove_credential, Attribute, BlindSignRequestBody, Credential, Parameters, Signature,
    SignatureShare, VerificationKey,
 };
 use url::Url;

-use crate::coconut::bandwidth::PRIVATE_ATTRIBUTES;
-use crate::error::Error;
-
 /// Contacts all provided validators and then aggregate their verification keys.
 ///
 /// # Arguments
@@ -65,18 +63,17 @@ async fn obtain_partial_credential(
    public_attributes: &[Attribute],
    private_attributes: &[Attribute],
    client: &validator_client::ApiClient,
-    validator_vk: &VerificationKey,
 ) -> Result<Signature, Error> {
    let elgamal_keypair = coconut_interface::elgamal_keygen(params);
    let blind_sign_request = prepare_blind_sign(
        params,
-        &elgamal_keypair,
+        elgamal_keypair.public_key(),
        private_attributes,
        public_attributes,
    )?;

    let blind_sign_request_body = BlindSignRequestBody::new(
-        &blind_sign_request,
+        blind_sign_request,
        elgamal_keypair.public_key(),
        public_attributes,
        (public_attributes.len() + private_attributes.len()) as u32,
@@ -86,17 +83,7 @@ async fn obtain_partial_credential(
        .blind_sign(&blind_sign_request_body)
        .await?
        .blinded_signature;
-
-    let unblinded_signature = blinded_signature.unblind(
-        params,
-        elgamal_keypair.private_key(),
-        validator_vk,
-        private_attributes,
-        public_attributes,
-        &blind_sign_request.get_commitment_hash(),
-    )?;
-
-    Ok(unblinded_signature)
+    Ok(blinded_signature.unblind(elgamal_keypair.private_key()))
 }

 pub async fn obtain_aggregate_signature(
@@ -110,76 +97,40 @@ pub async fn obtain_aggregate_signature(
    }

    let mut shares = Vec::with_capacity(validators.len());
-    let mut validators_partial_vks: Vec<VerificationKey> = Vec::with_capacity(validators.len());

    let mut client = validator_client::ApiClient::new(validators[0].clone());
-    let validator_partial_vk = client.get_coconut_verification_key().await?;
-    validators_partial_vks.push(validator_partial_vk.key.clone());
-
-    let first = obtain_partial_credential(
-        params,
-        public_attributes,
-        private_attributes,
-        &client,
-        &validator_partial_vk.key,
-    )
-    .await?;
+    let first =
+        obtain_partial_credential(params, public_attributes, private_attributes, &client).await?;
    shares.push(SignatureShare::new(first, 0));

    for (id, validator_url) in validators.iter().enumerate().skip(1) {
        client.change_validator_api(validator_url.clone());
-        let validator_partial_vk = client.get_coconut_verification_key().await?;
-        validators_partial_vks.push(validator_partial_vk.key.clone());
-        let signature = obtain_partial_credential(
-            params,
-            public_attributes,
-            private_attributes,
-            &client,
-            &validator_partial_vk.key,
-        )
-        .await?;
+        let signature =
+            obtain_partial_credential(params, public_attributes, private_attributes, &client)
+                .await?;
        let share = SignatureShare::new(signature, id as u64);
        shares.push(share)
    }

-    let mut attributes = Vec::with_capacity(private_attributes.len() + public_attributes.len());
-    attributes.extend_from_slice(private_attributes);
-    attributes.extend_from_slice(public_attributes);
-
-    let mut indices: Vec<u64> = Vec::with_capacity(validators_partial_vks.len());
-    for i in 1..validators_partial_vks.len() {
-        indices.push(i as u64);
-    }
-    let verification_key =
-        aggregate_verification_keys(&validators_partial_vks, Some(indices.as_ref()))?;
-
-    Ok(aggregate_signature_shares(
-        params,
-        &verification_key,
-        &attributes,
-        &shares,
-    )?)
+    Ok(aggregate_signature_shares(&shares)?)
 }

 // TODO: better type flow
 pub fn prepare_credential_for_spending(
    params: &Parameters,
    public_attributes: Vec<Vec<u8>>,
-    serial_number: Attribute,
-    binding_number: Attribute,
+    private_attributes: Vec<Vec<u8>>,
    signature: &Signature,
    verification_key: &VerificationKey,
 ) -> Result<Credential, Error> {
-    let theta = prove_bandwidth_credential(
-        params,
-        verification_key,
-        signature,
-        serial_number,
-        binding_number,
-    )?;
+    let private_attributes = private_attributes
+        .iter()
+        .map(hash_to_scalar)
+        .collect::<Vec<Attribute>>();
+    let theta = prove_credential(params, verification_key, signature, &private_attributes)?;

    Ok(Credential::new(
-        (public_attributes.len() + PRIVATE_ATTRIBUTES as usize) as u32,
+        (public_attributes.len() + private_attributes.len()) as u32,
        theta,
        public_attributes,
        signature,
@@ -1,7 +1,7 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-pub use ed25519_dalek::ed25519::signature::Signature as SignatureTrait;
+use ed25519_dalek::ed25519::signature::Signature as SignatureTrait;
 pub use ed25519_dalek::SignatureError;
 pub use ed25519_dalek::{Verifier, PUBLIC_KEY_LENGTH, SECRET_KEY_LENGTH, SIGNATURE_LENGTH};
 use nymsphinx_types::{DestinationAddressBytes, DESTINATION_ADDRESS_LENGTH};
@@ -10,33 +10,33 @@ use rand::{CryptoRng, RngCore};
 use std::fmt::{self, Display, Formatter};

 #[derive(Debug)]
-pub enum Ed25519RecoveryError {
+pub enum KeyRecoveryError {
    MalformedBytes(SignatureError),
    MalformedString(bs58::decode::Error),
 }

-impl From<SignatureError> for Ed25519RecoveryError {
+impl From<SignatureError> for KeyRecoveryError {
    fn from(err: SignatureError) -> Self {
-        Ed25519RecoveryError::MalformedBytes(err)
+        KeyRecoveryError::MalformedBytes(err)
    }
 }

-impl From<bs58::decode::Error> for Ed25519RecoveryError {
+impl From<bs58::decode::Error> for KeyRecoveryError {
    fn from(err: bs58::decode::Error) -> Self {
-        Ed25519RecoveryError::MalformedString(err)
+        KeyRecoveryError::MalformedString(err)
    }
 }

-impl fmt::Display for Ed25519RecoveryError {
+impl fmt::Display for KeyRecoveryError {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        match self {
-            Ed25519RecoveryError::MalformedBytes(err) => write!(f, "malformed bytes - {}", err),
-            Ed25519RecoveryError::MalformedString(err) => write!(f, "malformed string - {}", err),
+            KeyRecoveryError::MalformedBytes(err) => write!(f, "malformed bytes - {}", err),
+            KeyRecoveryError::MalformedString(err) => write!(f, "malformed string - {}", err),
        }
    }
 }

-impl std::error::Error for Ed25519RecoveryError {}
+impl std::error::Error for KeyRecoveryError {}

 /// Keypair for usage in ed25519 EdDSA.
 pub struct KeyPair {
@@ -62,7 +62,7 @@ impl KeyPair {
        &self.public_key
    }

-    pub fn from_bytes(priv_bytes: &[u8], pub_bytes: &[u8]) -> Result<Self, Ed25519RecoveryError> {
+    pub fn from_bytes(priv_bytes: &[u8], pub_bytes: &[u8]) -> Result<Self, KeyRecoveryError> {
        Ok(KeyPair {
            private_key: PrivateKey::from_bytes(priv_bytes)?,
            public_key: PublicKey::from_bytes(pub_bytes)?,
@@ -115,7 +115,7 @@ impl PublicKey {
        self.0.to_bytes()
    }

-    pub fn from_bytes(b: &[u8]) -> Result<Self, Ed25519RecoveryError> {
+    pub fn from_bytes(b: &[u8]) -> Result<Self, KeyRecoveryError> {
        Ok(PublicKey(ed25519_dalek::PublicKey::from_bytes(b)?))
    }

@@ -123,7 +123,7 @@ impl PublicKey {
        bs58::encode(self.to_bytes()).into_string()
    }

-    pub fn from_base58_string<I: AsRef<[u8]>>(val: I) -> Result<Self, Ed25519RecoveryError> {
+    pub fn from_base58_string<I: AsRef<[u8]>>(val: I) -> Result<Self, KeyRecoveryError> {
        let bytes = bs58::decode(val).into_vec()?;
        Self::from_bytes(&bytes)
    }
@@ -134,7 +134,7 @@ impl PublicKey {
 }

 impl PemStorableKey for PublicKey {
-    type Error = Ed25519RecoveryError;
+    type Error = KeyRecoveryError;

    fn pem_type() -> &'static str {
        "ED25519 PUBLIC KEY"
@@ -170,7 +170,7 @@ impl PrivateKey {
        self.0.to_bytes()
    }

-    pub fn from_bytes(b: &[u8]) -> Result<Self, Ed25519RecoveryError> {
+    pub fn from_bytes(b: &[u8]) -> Result<Self, KeyRecoveryError> {
        Ok(PrivateKey(ed25519_dalek::SecretKey::from_bytes(b)?))
    }

@@ -178,7 +178,7 @@ impl PrivateKey {
        bs58::encode(&self.to_bytes()).into_string()
    }

-    pub fn from_base58_string<I: AsRef<[u8]>>(val: I) -> Result<Self, Ed25519RecoveryError> {
+    pub fn from_base58_string<I: AsRef<[u8]>>(val: I) -> Result<Self, KeyRecoveryError> {
        let bytes = bs58::decode(val).into_vec()?;
        Self::from_bytes(&bytes)
    }
@@ -192,7 +192,7 @@ impl PrivateKey {
 }

 impl PemStorableKey for PrivateKey {
-    type Error = Ed25519RecoveryError;
+    type Error = KeyRecoveryError;

    fn pem_type() -> &'static str {
        "ED25519 PRIVATE KEY"
@@ -211,20 +211,11 @@ impl PemStorableKey for PrivateKey {
 pub struct Signature(ed25519_dalek::Signature);

 impl Signature {
-    pub fn to_base58_string(&self) -> String {
-        bs58::encode(&self.to_bytes()).into_string()
-    }
-
-    pub fn from_base58_string<I: AsRef<[u8]>>(val: I) -> Result<Self, Ed25519RecoveryError> {
-        let bytes = bs58::decode(val).into_vec()?;
-        Self::from_bytes(&bytes)
-    }
-
    pub fn to_bytes(&self) -> [u8; SIGNATURE_LENGTH] {
        self.0.to_bytes()
    }

-    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Ed25519RecoveryError> {
+    pub fn from_bytes(bytes: &[u8]) -> Result<Self, SignatureError> {
        Ok(Signature(ed25519_dalek::Signature::from_bytes(bytes)?))
    }
 }
@@ -1,10 +0,0 @@
-[package]
-name = "erc20-bridge-contract"
-version = "0.1.0"
-edition = "2018"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-schemars = "0.8"
-serde = { version = "1.0.103", default-features = false, features = ["derive"] }
@@ -1,45 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-use schemars::JsonSchema;
-use serde::{Deserialize, Serialize};
-
-// Serializable structures for what we find in common/crypto
-#[derive(Serialize, Deserialize, Copy, Clone, Debug, PartialEq, JsonSchema)]
-pub struct PublicKey([u8; 32]);
-
-impl PublicKey {
-    pub fn new(bytes: [u8; 32]) -> Self {
-        PublicKey(bytes)
-    }
-    pub fn to_bytes(&self) -> [u8; 32] {
-        self.0
-    }
-}
-
-impl AsRef<[u8]> for PublicKey {
-    #[inline]
-    fn as_ref(&self) -> &[u8] {
-        &self.0
-    }
-}
-
-#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
-pub struct Signature([u8; 32], [u8; 32]);
-
-impl Signature {
-    pub fn new(bytes: [u8; 64]) -> Self {
-        let mut sig1 = [0u8; 32];
-        let mut sig2 = [0u8; 32];
-        sig1.copy_from_slice(&bytes[..32]);
-        sig2.copy_from_slice(&bytes[32..]);
-
-        Signature(sig1, sig2)
-    }
-    pub fn to_bytes(&self) -> [u8; 64] {
-        let mut res = [0u8; 64];
-        res[..32].copy_from_slice(&self.0);
-        res[32..].copy_from_slice(&self.1);
-        res
-    }
-}
@@ -1,3 +0,0 @@
-pub mod keys;
-pub mod msg;
-pub mod payment;
@@ -1,30 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-use schemars::JsonSchema;
-use serde::{Deserialize, Serialize};
-
-use crate::keys::PublicKey;
-use crate::payment::LinkPaymentData;
-
-#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
-pub struct InstantiateMsg {}
-
-#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
-#[serde(rename_all = "snake_case")]
-pub enum ExecuteMsg {
-    LinkPayment { data: LinkPaymentData },
-}
-
-#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
-#[serde(rename_all = "snake_case")]
-pub enum QueryMsg {
-    GetPayments {
-        limit: Option<u32>,
-        start_after: Option<PublicKey>,
-    },
-}
-
-#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
-#[serde(rename_all = "snake_case")]
-pub struct MigrateMsg {}
@@ -1,73 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-use schemars::JsonSchema;
-use serde::{Deserialize, Serialize};
-
-use crate::keys::{PublicKey, Signature};
-
-#[derive(Clone, Debug, Deserialize, PartialEq, Serialize, JsonSchema)]
-pub struct Payment {
-    verification_key: PublicKey,
-    gateway_identity: PublicKey,
-    bandwidth: u64,
-}
-
-impl Payment {
-    pub fn new(verification_key: PublicKey, gateway_identity: PublicKey, bandwidth: u64) -> Self {
-        Payment {
-            verification_key,
-            gateway_identity,
-            bandwidth,
-        }
-    }
-
-    pub fn verification_key(&self) -> PublicKey {
-        self.verification_key
-    }
-}
-
-#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
-pub struct LinkPaymentData {
-    pub verification_key: PublicKey,
-    pub gateway_identity: PublicKey,
-    pub bandwidth: u64,
-    pub signature: Signature,
-}
-
-impl LinkPaymentData {
-    pub fn new(
-        verification_key: [u8; 32],
-        gateway_identity: [u8; 32],
-        bandwidth: u64,
-        signature: [u8; 64],
-    ) -> Self {
-        LinkPaymentData {
-            verification_key: PublicKey::new(verification_key),
-            gateway_identity: PublicKey::new(gateway_identity),
-            bandwidth,
-            signature: Signature::new(signature),
-        }
-    }
-}
-
-#[derive(Clone, Debug, Deserialize, PartialEq, Serialize, JsonSchema)]
-pub struct PagedPaymentResponse {
-    pub payments: Vec<Payment>,
-    pub per_page: usize,
-    pub start_next_after: Option<PublicKey>,
-}
-
-impl PagedPaymentResponse {
-    pub fn new(
-        payments: Vec<Payment>,
-        per_page: usize,
-        start_next_after: Option<PublicKey>,
-    ) -> Self {
-        PagedPaymentResponse {
-            payments,
-            per_page,
-            start_next_after,
-        }
-    }
-}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Tommy Verrall	5bf36f1367	cargo update removed windows headings changed scripts for building	2021-11-10 11:44:20 +00:00
Mark Sinclair	5da1d89501	Update webview version - see https://github.com/tauri-apps/tauri/issues/2570#issuecomment-916780781 Ignore output in `dist`	2021-11-10 09:29:19 +00:00
Mark Sinclair	d7090ecb5a	Add webpack config for prod	2021-11-10 09:06:16 +00:00
Mark Sinclair	1a1a2a0355	Build nym wallet with GH Actions	2021-11-10 08:45:43 +00:00