Handle ecash network errors differently (#5378 )

Update Cargo.toml
bugfix: only consider pre-existing peers for wg bytes metric (#5357 )
2025-01-23 10:48:03 +01:00 · 2025-01-16 12:51:53 +01:00 · 2025-01-16 11:50:26 +00:00 · 2025-01-15 10:27:39 +01:00 · 2025-01-14 15:00:49 +01:00 · 2025-01-14 13:41:30 +01:00
758 changed files with 23879 additions and 15392 deletions
@@ -4,4 +4,3 @@
 **/node_modules
 **/target
 dist
-documentation
@@ -30,10 +30,11 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        os: [ arc-ubuntu-20.04, custom-runner-mac-m1 ]
+        os: [ arc-ubuntu-20.04, custom-windows-11, custom-runner-mac-m1 ]
    runs-on: ${{ matrix.os }}
    env:
      CARGO_TERM_COLOR: always
+      IPINFO_API_TOKEN: ${{ secrets.IPINFO_API_TOKEN }}
    steps:
      - name: Install Dependencies (Linux)
        run: sudo apt-get update && sudo apt-get -y install libwebkit2gtk-4.0-dev build-essential curl wget libssl-dev libgtk-3-dev libudev-dev squashfs-tools protobuf-compiler
@@ -56,14 +56,6 @@ jobs:
          rustup target add aarch64-linux-android \
            x86_64-linux-android

-      - name: Build lib nym-socks5-listener
-        working-directory: sdk/lib/socks5-listener/
-        env:
-          RELEASE: true
-          RUSTFLAGS: "-C link-args=-Wl,--hash-style=gnu"
-        # build for arm64 and x86_64
-        run: ./build-android.sh aarch64 x86_64
-
      - name: Build APKs (unsigned)
        working-directory: nym-connect/native/android
        env:
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.44.5
+        uses: mikefarah/yq@v4.44.6
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/nym-credential-proxy/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.44.5
+        uses: mikefarah/yq@v4.44.6
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.44.5
+        uses: mikefarah/yq@v4.44.6
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/nym-network-monitor/Cargo.toml
@@ -8,7 +8,7 @@ on:
        description: Which gateway probe git ref to build the image with

 env:
-  WORKING_DIRECTORY: "nym-node-status-agent"
+  WORKING_DIRECTORY: "nym-node-status-api/nym-node-status-agent"
  CONTAINER_NAME: "node-status-agent"

 jobs:
@@ -31,7 +31,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.44.5
+        uses: mikefarah/yq@v4.44.6
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -58,4 +58,4 @@ jobs:
      - name: BuildAndPushImageOnHarbor
        run: |
          docker build --build-arg GIT_REF=${{ github.event.inputs.gateway_probe_git_ref }} -f ${{ env.WORKING_DIRECTORY }}/Dockerfile . -t harbor.nymte.ch/nym/${{ env.CONTAINER_NAME }}:${{ steps.get_version.outputs.result }}-${{ steps.cleanup_gateway_probe_ref.outputs.git_ref }}
-          docker push harbor.nymte.ch/nym/${{ env.CONTAINER_NAME }} --all-tags
+          docker push harbor.nymte.ch/nym/${{ env.CONTAINER_NAME }} --all-tags
@@ -3,7 +3,7 @@ on:
  workflow_dispatch:

 env:
-  WORKING_DIRECTORY: "nym-node-status-api"
+  WORKING_DIRECTORY: "nym-node-status-api/nym-node-status-api"
  CONTAINER_NAME: "node-status-api"

 jobs:
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.44.5
+        uses: mikefarah/yq@v4.44.6
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.44.5
+        uses: mikefarah/yq@v4.44.6
        id: get_version
        with:
          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
@@ -0,0 +1,55 @@
+name: Build and upload Nyx Chain Watcher container to harbor.nymte.ch
+on:
+  workflow_dispatch:
+
+env:
+  WORKING_DIRECTORY: "nyx-chain-watcher"
+  CONTAINER_NAME: "nyx-chain-watcher"
+
+jobs:
+  build-container:
+    runs-on: arc-ubuntu-22.04-dind
+    steps:
+      - name: Login to Harbor
+        uses: docker/login-action@v3
+        with:
+          registry: harbor.nymte.ch
+          username: ${{ secrets.HARBOR_ROBOT_USERNAME }}
+          password: ${{ secrets.HARBOR_ROBOT_SECRET }}
+
+      - name: Checkout repo
+        uses: actions/checkout@v4
+
+      - name: Configure git identity
+        run: |
+          git config --global user.email "lawrence@nymtech.net"
+          git config --global user.name "Lawrence Stalder"
+
+      - name: Get version from cargo.toml
+        uses: mikefarah/yq@v4.44.6
+        id: get_version
+        with:
+          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml
+
+      - name: Check if tag exists
+        run: |
+          if git rev-parse ${{ steps.get_version.outputs.value }} >/dev/null 2>&1; then
+            echo "Tag ${{ steps.get_version.outputs.value }} already exists"
+          fi
+
+      - name: Remove existing tag if exists
+        run: |
+          if git rev-parse ${{ env.WORKING_DIRECTORY }}-${{ steps.get_version.outputs.result }} >/dev/null 2>&1; then
+            git push --delete origin ${{ env.WORKING_DIRECTORY }}-${{ steps.get_version.outputs.result }}
+            git tag -d ${{ env.WORKING_DIRECTORY }}-${{ steps.get_version.outputs.result }}
+          fi
+
+      - name: Create tag
+        run: |
+          git tag -a ${{ env.WORKING_DIRECTORY }}-${{ steps.get_version.outputs.result }} -m "Version ${{ steps.get_version.outputs.result }}"
+          git push origin ${{ env.WORKING_DIRECTORY }}-${{ steps.get_version.outputs.result }}
+
+      - name: BuildAndPushImageOnHarbor
+        run: |
+          docker build -f ${{ env.WORKING_DIRECTORY }}/Dockerfile . -t harbor.nymte.ch/nym/${{ env.CONTAINER_NAME }}:${{ steps.get_version.outputs.result }} -t harbor.nymte.ch/nym/${{ env.CONTAINER_NAME }}:latest
+          docker push harbor.nymte.ch/nym/${{ env.CONTAINER_NAME }} --all-tags
@@ -26,10 +26,10 @@ jobs:
          git config --global user.name "Lawrence Stalder"

      - name: Get version from cargo.toml
-        uses: mikefarah/yq@v4.44.5
+        uses: mikefarah/yq@v4.44.6
        id: get_version
        with:
-          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/nym-credential-proxy/Cargo.toml
+          cmd: yq -oy '.package.version' ${{ env.WORKING_DIRECTORY }}/Cargo.toml

      - name: Remove existing tag if exists
        run: |
@@ -51,4 +51,6 @@ ppa-private-key.b64
 ppa-private-key.asc
 nym-network-monitor/topology.json
 nym-network-monitor/__pycache__
-nym-network-monitor/*.key
+nym-network-monitor/*.key
+nym-network-monitor/.envrc
+nym-network-monitor/.envrc
@@ -4,6 +4,233 @@ Post 1.0.0 release, the changelog format is based on [Keep a Changelog](https://

 ## [Unreleased]

+## [2025.1-reeses] (2025-01-15)
+
+- Feture/legacy alert ([#5346])
+- chore: readjusted --mode behaviour to fix the regression ([#5331])
+- chore: apply 1.84 linter suggestions ([#5330])
+- bugfix: make sure refresh data key matches bond info ([#5329])
+- reduce log severity for number of packets being delayed ([#5321])
+- feat: warn users if node is run in exit mode only ([#5320])
+- Bugfix/contract version assignment ([#5318])
+- fixed client session histogram buckets ([#5316])
+- amend 250gb limit ([#5313])
+- feature: expand nym-node prometheus metrics ([#5298])
+- Cherry picked #5286 ([#5287])
+- Add close to credential storage ([#5283])
+- feature: wireguard metrics ([#5278])
+- Add PATCH support to nym-http-api-client ([#5260])
+- chore: removed legacy socks5 listener ([#5259])
+- bugfix: make sure to apply gateway score filtering when choosing initial node ([#5256])
+- Update TS bindings ([#5255])
+- Add conversion unit tests for auth msg ([#5251])
+- Add control messages to GatewayTransciver ([#5247])
+- Remove unneeded async function annotation ([#5246])
+- bugfix: make sure to update timestamp of last batch verification to prevent double redemption ([#5239])
+- Add FromStr impl for UserAgent ([#5236])
+- Extend swagger docs ([#5235])
+- TicketType derive Hash and Eq ([#5233])
+- Add fd callback to client core ([#5230])
+- Extend raw ws fd for gateway client ([#5218])
+- Shipping raw metrics to PG ([#5216])
+- Change sqlite journal mode to WAL ([#5213])
+- Derive serialize for UserAgent ([#5210])
+- Restore Location fields ([#5208])
+- better date serialization ([#5207])
+- Fix overflow ([#5204])
+- feature: hopefully final steps of the smoosh™️ ([#5201])
+- Fix overflow ([#5184])
+- NS API - Gateway stats scraping ([#5180])
+- introduced initial internal commands for nym-cli: ecash key and request generation ([#5174])
+- Move NS client to separate package under NS API ([#5171])
+- build(deps): bump micromatch from 4.0.4 to 4.0.8 in /testnet-faucet ([#4813])
+
+[#5346]: https://github.com/nymtech/nym/pull/5346
+[#5331]: https://github.com/nymtech/nym/pull/5331
+[#5330]: https://github.com/nymtech/nym/pull/5330
+[#5329]: https://github.com/nymtech/nym/pull/5329
+[#5321]: https://github.com/nymtech/nym/pull/5321
+[#5320]: https://github.com/nymtech/nym/pull/5320
+[#5318]: https://github.com/nymtech/nym/pull/5318
+[#5316]: https://github.com/nymtech/nym/pull/5316
+[#5313]: https://github.com/nymtech/nym/pull/5313
+[#5298]: https://github.com/nymtech/nym/pull/5298
+[#5287]: https://github.com/nymtech/nym/pull/5287
+[#5283]: https://github.com/nymtech/nym/pull/5283
+[#5278]: https://github.com/nymtech/nym/pull/5278
+[#5260]: https://github.com/nymtech/nym/pull/5260
+[#5259]: https://github.com/nymtech/nym/pull/5259
+[#5256]: https://github.com/nymtech/nym/pull/5256
+[#5255]: https://github.com/nymtech/nym/pull/5255
+[#5251]: https://github.com/nymtech/nym/pull/5251
+[#5247]: https://github.com/nymtech/nym/pull/5247
+[#5246]: https://github.com/nymtech/nym/pull/5246
+[#5239]: https://github.com/nymtech/nym/pull/5239
+[#5236]: https://github.com/nymtech/nym/pull/5236
+[#5235]: https://github.com/nymtech/nym/pull/5235
+[#5233]: https://github.com/nymtech/nym/pull/5233
+[#5230]: https://github.com/nymtech/nym/pull/5230
+[#5218]: https://github.com/nymtech/nym/pull/5218
+[#5216]: https://github.com/nymtech/nym/pull/5216
+[#5213]: https://github.com/nymtech/nym/pull/5213
+[#5210]: https://github.com/nymtech/nym/pull/5210
+[#5208]: https://github.com/nymtech/nym/pull/5208
+[#5207]: https://github.com/nymtech/nym/pull/5207
+[#5204]: https://github.com/nymtech/nym/pull/5204
+[#5201]: https://github.com/nymtech/nym/pull/5201
+[#5184]: https://github.com/nymtech/nym/pull/5184
+[#5180]: https://github.com/nymtech/nym/pull/5180
+[#5174]: https://github.com/nymtech/nym/pull/5174
+[#5171]: https://github.com/nymtech/nym/pull/5171
+[#4813]: https://github.com/nymtech/nym/pull/4813
+
+## [2024.14-crunch-patched] (2024-12-17)
+
+- Fixes an issue to allow previously registred clients to connect to latest nym-nodes
+- Fixes compatibility issues between nym-nodes and older clients
+
+## [2024.14-crunch] (2024-12-11)
+
+- Merge/release/2024.14-crunch ([#5242])
+- bugfix: added explicit openapi servers to account for route prefixes ([#5237])
+- Further config score adjustments ([#5225])
+- feature: remve any filtering on node semver ([#5224])
+- Backport #5218 ([#5220])
+- Derive serialize for UserAgent (#5210) ([#5217])
+- dont consider legacy nodes for rewarded set selection ([#5215])
+- introduce UNSTABLE endpoints for returning network monitor run details ([#5214])
+- Nmv2 add debug config ([#5212])
+- nym-api NMv1 adjustments ([#5209])
+- adjusted config score penalty calculation ([#5206])
+- Fix backwards compat mac generation ([#5202])
+- merge crunch into develop ([#5199])
+- Update Security disclosure email, public key and policy ([#5195])
+- Guard storage access with cache ([#5193])
+- chore: apply 1.84 linter suggestions ([#5192])
+- improvement: make internal gateway clients use the same topology cache ([#5191])
+- Bugfix/credential proxy sequencing ([#5187])
+- Add monitor_run and testing_route indexes ([#5182])
+- Add indexes to monitor run and testing route ([#5181])
+- bugfix: fixed nym-node config migrations (again) ([#5179])
+- bugfix: use default value for verloc config when deserialising missing values ([#5177])
+- Remove peers with no allowed ip from storage ([#5175])
+- Move two minor jobs to free tier github hosted runners ([#5169])
+- Add support for DELETE to nym-http-api-client ([#5166])
+- Fix env var name ([#5165])
+- Add strum::EnumIter for TicketType ([#5164])
+- Add export_to_env to NymNetworkDetails ([#5162])
+- bugfix: correctly expose ecash-related data on nym-api ([#5155])
+- fix: validator-rewarder GH job ([#5151])
+- build(deps): bump cross-spawn from 7.0.3 to 7.0.6 in /testnet-faucet ([#5150])
+- build(deps): bump mikefarah/yq from 4.44.3 to 4.44.5 ([#5149])
+- start session collection for exit gateways ([#5148])
+- add version to clientStatsReport ([#5147])
+- update serde_json_path due to compilation issue ([#5144])
+- chore: remove standalone legacy mixnode/gateway binaries ([#5135])
+- [Product Data] Set up country reporting from vpn-client ([#5134])
+- removed ci-nym-api-tests.yml which was running outdated (and broken) tests ([#5133])
+- CI: reduce jobs running on cluster ([#5132])
+- [DOCS/operators]: Release changes v2024.13-magura & Tokenomics pages v1.0 ([#5128])
+- NS Agent auth with NS API ([#5127])
+- [Product Data] Config deserialization bug fix ([#5126])
+- bugfix: don't send empty BankMsg in ecash contract ([#5121])
+- [Product data] Data consumption with ecash ticket ([#5120])
+- feat: add GH workflow for nym-validator-rewarder ([#5119])
+- feat: add Dockerfile and add env vars for clap arguments ([#5118])
+- feature: config score ([#5117])
+- [Product Data] Add stats reporting configuration in client config  ([#5115])
+- Correct IPv6 address generation ([#5113])
+- feature: rewarding for ticketbook issuance ([#5112])
+- Add granular log on nym-node ([#5111])
+- Send mixnet packet stats using task client ([#5109])
+- Expose time range ([#5108])
+- [Product Data] Client-side stats collection  ([#5107])
+- chore: ecash contract migration to remove unused 'redemption_gateway_share' ([#5104])
+- [Product Data] Better unique user count on gateways ([#5084])
+- feat: add nym node GH workflow ([#5080])
+- IPv6 support for wireguard ([#5059])
+- Node Status API ([#5050])
+- Authenticator CLI client mode ([#5044])
+- Integrate nym-credential-proxy into workspace ([#5027])
+- [Product Data] Introduce data persistence on gateways ([#5022])
+- Bump the patch-updates group across 1 directory with 10 updates ([#5011])
+- build(deps): bump once_cell from 1.19.0 to 1.20.2 ([#4952])
+- Create TaskStatusEvent trait instead of piggybacking on Error ([#4919])
+- build(deps): bump lazy_static from 1.4.0 to 1.5.0 ([#4913])
+- Sync code with .env in build.rs ([#4876])
+- build(deps): bump axios from 1.6.0 to 1.7.5 in /nym-api/tests ([#4790])
+- Bump elliptic from 6.5.4 to 6.5.7 in /testnet-faucet ([#4768])
+
+[#5242]: https://github.com/nymtech/nym/pull/5242
+[#5237]: https://github.com/nymtech/nym/pull/5237
+[#5225]: https://github.com/nymtech/nym/pull/5225
+[#5224]: https://github.com/nymtech/nym/pull/5224
+[#5220]: https://github.com/nymtech/nym/pull/5220
+[#5217]: https://github.com/nymtech/nym/pull/5217
+[#5215]: https://github.com/nymtech/nym/pull/5215
+[#5214]: https://github.com/nymtech/nym/pull/5214
+[#5212]: https://github.com/nymtech/nym/pull/5212
+[#5209]: https://github.com/nymtech/nym/pull/5209
+[#5206]: https://github.com/nymtech/nym/pull/5206
+[#5202]: https://github.com/nymtech/nym/pull/5202
+[#5199]: https://github.com/nymtech/nym/pull/5199
+[#5195]: https://github.com/nymtech/nym/pull/5195
+[#5193]: https://github.com/nymtech/nym/pull/5193
+[#5192]: https://github.com/nymtech/nym/pull/5192
+[#5191]: https://github.com/nymtech/nym/pull/5191
+[#5187]: https://github.com/nymtech/nym/pull/5187
+[#5182]: https://github.com/nymtech/nym/pull/5182
+[#5181]: https://github.com/nymtech/nym/pull/5181
+[#5179]: https://github.com/nymtech/nym/pull/5179
+[#5177]: https://github.com/nymtech/nym/pull/5177
+[#5175]: https://github.com/nymtech/nym/pull/5175
+[#5169]: https://github.com/nymtech/nym/pull/5169
+[#5166]: https://github.com/nymtech/nym/pull/5166
+[#5165]: https://github.com/nymtech/nym/pull/5165
+[#5164]: https://github.com/nymtech/nym/pull/5164
+[#5162]: https://github.com/nymtech/nym/pull/5162
+[#5155]: https://github.com/nymtech/nym/pull/5155
+[#5151]: https://github.com/nymtech/nym/pull/5151
+[#5150]: https://github.com/nymtech/nym/pull/5150
+[#5149]: https://github.com/nymtech/nym/pull/5149
+[#5148]: https://github.com/nymtech/nym/pull/5148
+[#5147]: https://github.com/nymtech/nym/pull/5147
+[#5144]: https://github.com/nymtech/nym/pull/5144
+[#5135]: https://github.com/nymtech/nym/pull/5135
+[#5134]: https://github.com/nymtech/nym/pull/5134
+[#5133]: https://github.com/nymtech/nym/pull/5133
+[#5132]: https://github.com/nymtech/nym/pull/5132
+[#5128]: https://github.com/nymtech/nym/pull/5128
+[#5127]: https://github.com/nymtech/nym/pull/5127
+[#5126]: https://github.com/nymtech/nym/pull/5126
+[#5121]: https://github.com/nymtech/nym/pull/5121
+[#5120]: https://github.com/nymtech/nym/pull/5120
+[#5119]: https://github.com/nymtech/nym/pull/5119
+[#5118]: https://github.com/nymtech/nym/pull/5118
+[#5117]: https://github.com/nymtech/nym/pull/5117
+[#5115]: https://github.com/nymtech/nym/pull/5115
+[#5113]: https://github.com/nymtech/nym/pull/5113
+[#5112]: https://github.com/nymtech/nym/pull/5112
+[#5111]: https://github.com/nymtech/nym/pull/5111
+[#5109]: https://github.com/nymtech/nym/pull/5109
+[#5108]: https://github.com/nymtech/nym/pull/5108
+[#5107]: https://github.com/nymtech/nym/pull/5107
+[#5104]: https://github.com/nymtech/nym/pull/5104
+[#5084]: https://github.com/nymtech/nym/pull/5084
+[#5080]: https://github.com/nymtech/nym/pull/5080
+[#5059]: https://github.com/nymtech/nym/pull/5059
+[#5050]: https://github.com/nymtech/nym/pull/5050
+[#5044]: https://github.com/nymtech/nym/pull/5044
+[#5027]: https://github.com/nymtech/nym/pull/5027
+[#5022]: https://github.com/nymtech/nym/pull/5022
+[#5011]: https://github.com/nymtech/nym/pull/5011
+[#4952]: https://github.com/nymtech/nym/pull/4952
+[#4919]: https://github.com/nymtech/nym/pull/4919
+[#4913]: https://github.com/nymtech/nym/pull/4913
+[#4876]: https://github.com/nymtech/nym/pull/4876
+[#4790]: https://github.com/nymtech/nym/pull/4790
+[#4768]: https://github.com/nymtech/nym/pull/4768
+
 ## [2024.13-magura-drift] (2024-11-29)

 - Optimised syncing bandwidth information to storage
@@ -61,7 +61,6 @@ members = [
    "common/ip-packet-requests",
    "common/ledger",
    "common/mixnode-common",
-    "common/models",
    "common/network-defaults",
    "common/node-tester-utils",
    "common/nonexhaustive-delayqueue",
@@ -99,17 +98,15 @@ members = [
    "common/wasm/utils",
    "common/wireguard",
    "common/wireguard-types",
-    # "documentation/autodoc",
+    "documentation/autodoc",
    "explorer-api",
    "explorer-api/explorer-api-requests",
    "explorer-api/explorer-client",
    "gateway",
    "integrations/bity",
-    "mixnode",
    "sdk/ffi/cpp",
    "sdk/ffi/go",
    "sdk/ffi/shared",
-    "sdk/lib/socks5-listener",
    "sdk/rust/nym-sdk",
    "service-providers/authenticator",
    "service-providers/common",
@@ -124,10 +121,11 @@ members = [
    "nym-data-observatory",
    "nym-network-monitor",
    "nym-node",
-    "nym-node/nym-node-http-api",
    "nym-node/nym-node-requests",
-    "nym-node-status-api",
-    "nym-node-status-agent",
+    "nym-node/nym-node-metrics",
+    "nym-node-status-api/nym-node-status-agent",
+    "nym-node-status-api/nym-node-status-api",
+    "nym-node-status-api/nym-node-status-client",
    "nym-outfox",
    "nym-validator-rewarder",
    "tools/echo-server",
@@ -149,23 +147,20 @@ members = [
    "tools/internal/contract-state-importer/importer-cli",
    "tools/internal/contract-state-importer/importer-contract",
    "tools/internal/testnet-manager",
-    "tools/internal/testnet-manager/dkg-bypass-contract",
+    "tools/internal/testnet-manager/dkg-bypass-contract", "common/verloc", "tools/internal/mixnet-connectivity-check",
 ]

 default-members = [
    "clients/native",
    "clients/socks5",
-    "common/models",
    "explorer-api",
-    "gateway",
-    "mixnode",
    "nym-api",
    "nym-credential-proxy/nym-credential-proxy",
    "nym-data-observatory",
    "nym-node",
-    "nym-node-status-api",
+    "nym-node-status-api/nym-node-status-agent",
+    "nym-node-status-api/nym-node-status-api",
    "nym-validator-rewarder",
-    "nym-node-status-api",
    "service-providers/authenticator",
    "service-providers/ip-packet-router",
    "service-providers/network-requester",
@@ -264,6 +259,7 @@ http-body-util = "0.1"
 httpcodec = "0.2.3"
 humantime = "2.1.0"
 humantime-serde = "1.1.1"
+human-repr = "1.1.0"
 hyper = "1.4.1"
 hyper-util = "0.1"
 indicatif = "0.17.8"
@@ -398,19 +394,17 @@ prost = { version = "0.12", default-features = false }

 # wasm-related dependencies
 gloo-utils = "0.2.0"
-gloo-net = "0.5.0"
+gloo-net = "0.6.0"

-# use a separate branch due to feature unification failures
-# this is blocked until the upstream removes outdates `wasm_bindgen` feature usage
-# indexed_db_futures = "0.4.1"
-indexed_db_futures = { git = "https://github.com/TiemenSch/rust-indexed-db", branch = "update-uuid" }
-js-sys = "0.3.70"
+# TODO: migrate to 0.6+
+indexed_db_futures = "0.4.2"
+js-sys = "0.3.76"
 serde-wasm-bindgen = "0.6.5"
 tsify = "0.4.5"
-wasm-bindgen = "0.2.95"
-wasm-bindgen-futures = "0.4.45"
-wasmtimer = "0.2.0"
-web-sys = "0.3.72"
+wasm-bindgen = "0.2.99"
+wasm-bindgen-futures = "0.4.49"
+wasmtimer = "0.4.1"
+web-sys = "0.3.76"

 # Profile settings for individual crates

@@ -420,10 +414,6 @@ web-sys = "0.3.72"
 [profile.dev.package.sqlx-macros]
 opt-level = 3

-[profile.release.package.nym-socks5-listener]
-strip = true
-codegen-units = 1
-
 [profile.release.package.nym-client-wasm]
 # lto = true
 opt-level = 'z'
@@ -14,6 +14,7 @@ The platform is composed of multiple Rust crates. Top-level executable binary cr
 * `nym-socks5-client` - a Socks5 proxy you can run on your machine and use with existing applications.
 * `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-cli` - a tool for interacting with the network from the CLI. 
 <!-- coming soon
 * `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").
 -->
@@ -35,24 +36,20 @@ client ───► Gateway ──┘  mix  │  mix  ┌─►mix ───►
 ### Building

 * Platform build instructions are available on Nym [Operators Guide documentation](https://nymtech.net/operators/binaries/building-nym.html).
-* Wallet build instructions are available on Nym [Technical docs](https://nymtech.net/docs/wallet/desktop-wallet.html).
+* Wallet build instructions are available [here](https://github.com/nymtech/nym/tree/master/nym-wallet#installation-prerequisites---linux--mac).

 ### Developing

-There's a [`sandbox.env`](https://github.com/nymtech/nym/envs/sandbox.env) file provided which you can rename to `.env` if you want convenient testing environment. Read more about sandbox environment in our [Operators Guide page](https://nymtech.net/operators/sandbox.html).
-
 References for developers:

-* [Developers Portal](https://nymtech.net/developers)
-* [Typescript SDKs](https://sdk.nymtech.net/)
-* [Technical Documentation - Nym network overview](https://nymtech.net/docs/)
-* [Release Cycle - git flow](https://nymtech.net/operators/release-cycle.html)
+* [Dev Docs](https://nymtech.net/docs/developers)
+* [SDKs](https://nymtech.net/docs/developers/rust)
+* [Network Docs](https://nymtech.net/docs/network)
+* [Release Cycle - git flow](https://nymtech.net/docs/operators/release-cycle)

 ### Developer chat

-You can chat to us in two places:
-* The #dev channel on [Matrix](https://matrix.to/#/#dev:nymtech.chat)
-* The various developer channels on [Discord](https://nymtech.net/go/discord)
+You can chat to us in the #dev channel on [Matrix](https://matrix.to/#/#dev:nymtech.chat) or on the [Nym Forum](https://forum.nymtech.net).

 ### Tokenomics & Rewards

@@ -3,37 +3,23 @@ Critical bug or security issue 💥
 If you're here because you're trying to figure out how to notify us of a security issue, send us a PGP encrypted email to:

 ```
-security@nymte.ch
+security@nym.com
 ```

 Encrypted with our public key which is available below in plain text and also on keyservers:

 ```
-pub   rsa4096 2023-10-30 [SC] [expire : 2026-10-29]
+sec   rsa4096/7C3C727F05090550 2023-10-30 [SC] [expire : 2026-10-29]
      24B2592E801A5AAA8666C8BA7C3C727F05090550
-uid          [  ultime ] Security Nym Technologies <security@nymte.ch>
-sub   rsa4096 2023-10-30 [E] [expire : 2026-10-29]
+uid                [  ultime ] Security Nym Technologies <security@nym.com>
+ssb   rsa4096/ACD0FBD79DC70ACC 2023-10-30 [E] [expire : 2026-10-29]

 ```

 The fingerprint of the key is on the second line above.

-If you need to chat __urgently__ to our team for a __critical__ security issue:
-
-go to Matrix, and alert the core engineers with a private direct message:
-
-    Jedrzej Stuczynski @jstuczyn:nymtech.chat
-    Mark Sinclair @mark:nymtech.chat
-    Raphaël Walther @raphael:nymtech.chat
-
 Please avoid opening public issues on GitHub that contain information about a potential security vulnerability as this makes it difficult to reduce the impact and harm of valid security issues.

-If you don't know what Matrix is, you can follow this documentation to create an account on this federation of instant messaging servers:
-
-[Matrix for Instant Messaging](https://matrix.org/docs/chat_basics/matrix-for-im/)
-
-
-
 ```
 -----BEGIN PGP PUBLIC KEY BLOCK-----

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 -----END PGP PUBLIC KEY BLOCK-----
+
 ```
@@ -1,6 +1,6 @@
 [package]
 name = "nym-client"
-version = "1.1.45"
+version = "1.1.46"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>", "Jędrzej Stuczyński <andrew@nymtech.net>"]
 description = "Implementation of the Nym Client"
 edition = "2021"
@@ -3,13 +3,10 @@

 use crate::commands::try_load_current_config;
 use crate::{
-    client::{config::Config, SocketClient},
+    client::SocketClient,
    commands::{override_config, OverrideConfig},
-    error::ClientError,
 };
 use clap::Args;
-use log::*;
-use nym_bin_common::version_checker::is_minor_version_compatible;
 use nym_client_core::cli_helpers::client_run::CommonClientRunArgs;
 use std::error::Error;
 use std::net::IpAddr;
@@ -48,36 +45,12 @@ impl From<Run> for OverrideConfig {
    }
 }

-// this only checks compatibility between config the binary. It does not take into consideration
-// network version. It might do so in the future.
-fn version_check(cfg: &Config) -> bool {
-    let binary_version = env!("CARGO_PKG_VERSION");
-    let config_version = &cfg.base.client.version;
-    if binary_version == config_version {
-        true
-    } else {
-        warn!("The native-client binary has different version than what is specified in config file! {} and {}", binary_version, config_version);
-        if is_minor_version_compatible(binary_version, config_version) {
-            info!("but they are still semver compatible. However, consider running the `upgrade` command");
-            true
-        } else {
-            error!("and they are semver incompatible! - please run the `upgrade` command before attempting `run` again");
-            false
-        }
-    }
-}
-
 pub(crate) async fn execute(args: Run) -> Result<(), Box<dyn Error + Send + Sync>> {
    eprintln!("Starting client {}...", args.common_args.id);

    let mut config = try_load_current_config(&args.common_args.id).await?;
    config = override_config(config, OverrideConfig::from(args.clone()));

-    if !version_check(&config) {
-        error!("failed the local version check");
-        return Err(Box::new(ClientError::FailedLocalVersionCheck));
-    }
-
    SocketClient::new(config, args.common_args.custom_mixnet)
        .run_socket_forever()
        .await
@@ -17,9 +17,6 @@ pub enum ClientError {
    #[error("Failed to validate the loaded config")]
    ConfigValidationFailure,

-    #[error("Failed local version check, client and config mismatch")]
-    FailedLocalVersionCheck,
-
    #[error("Attempted to start the client in invalid socket mode")]
    InvalidSocketMode,

@@ -1,6 +1,6 @@
 [package]
 name = "nym-socks5-client"
-version = "1.1.45"
+version = "1.1.46"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>"]
 description = "A SOCKS5 localhost proxy that converts incoming messages to Sphinx and sends them to a Nym address"
 edition = "2021"
@@ -2,14 +2,8 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::commands::try_load_current_config;
-use crate::config::Config;
-use crate::{
-    commands::{override_config, OverrideConfig},
-    error::Socks5ClientError,
-};
+use crate::commands::{override_config, OverrideConfig};
 use clap::Args;
-use log::*;
-use nym_bin_common::version_checker::is_minor_version_compatible;
 use nym_client_core::cli_helpers::client_run::CommonClientRunArgs;
 use nym_client_core::client::base_client::storage::OnDiskPersistent;
 use nym_client_core::client::topology_control::geo_aware_provider::CountryGroup;
@@ -82,38 +76,12 @@ fn validate_country_group(s: &str) -> Result<CountryGroup, String> {
    }
 }

-// this only checks compatibility between config the binary. It does not take into consideration
-// network version. It might do so in the future.
-fn version_check(cfg: &Config) -> bool {
-    let binary_version = env!("CARGO_PKG_VERSION");
-    let config_version = &cfg.core.base.client.version;
-    if binary_version == config_version {
-        true
-    } else {
-        warn!(
-            "The socks5-client binary has different version than what is specified in config file! {binary_version} and {config_version}",
-        );
-        if is_minor_version_compatible(binary_version, config_version) {
-            info!("but they are still semver compatible. However, consider running the `upgrade` command");
-            true
-        } else {
-            error!("and they are semver incompatible! - please run the `upgrade` command before attempting `run` again");
-            false
-        }
-    }
-}
-
 pub(crate) async fn execute(args: Run) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    eprintln!("Starting client {}...", args.common_args.id);

    let mut config = try_load_current_config(&args.common_args.id).await?;
    config = override_config(config, OverrideConfig::from(args.clone()));

-    if !version_check(&config) {
-        error!("failed the local version check");
-        return Err(Box::new(Socks5ClientError::FailedLocalVersionCheck));
-    }
-
    let storage =
        OnDiskPersistent::from_paths(config.storage_paths.common_paths, &config.core.base.debug)
            .await?;
@@ -14,9 +14,6 @@ pub enum Socks5ClientError {
    #[error("Failed to validate the loaded config")]
    ConfigValidationFailure,

-    #[error("Failed local version check, client and config mismatch")]
-    FailedLocalVersionCheck,
-
    #[error("Fail to bind address")]
    FailToBindAddress,

@@ -8,6 +8,7 @@ pub mod v3;
 pub mod v4;

 mod error;
+mod util;

 pub use error::Error;
 pub use v4 as latest;
@@ -0,0 +1,71 @@
+// Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+#[cfg(test)]
+pub(crate) mod tests {
+    pub(crate) const CREDENTIAL_BYTES: [u8; 1245] = [
+        0, 0, 4, 133, 96, 179, 223, 185, 136, 23, 213, 166, 59, 203, 66, 69, 209, 181, 227, 254,
+        16, 102, 98, 237, 59, 119, 170, 111, 31, 194, 51, 59, 120, 17, 115, 229, 79, 91, 11, 139,
+        154, 2, 212, 23, 68, 70, 167, 3, 240, 54, 224, 171, 221, 1, 69, 48, 60, 118, 119, 249, 123,
+        35, 172, 227, 131, 96, 232, 209, 187, 123, 4, 197, 102, 90, 96, 45, 125, 135, 140, 99, 1,
+        151, 17, 131, 143, 157, 97, 107, 139, 232, 212, 87, 14, 115, 253, 255, 166, 167, 186, 43,
+        90, 96, 173, 105, 120, 40, 10, 163, 250, 224, 214, 200, 178, 4, 160, 16, 130, 59, 76, 193,
+        39, 240, 3, 101, 141, 209, 183, 226, 186, 207, 56, 210, 187, 7, 164, 240, 164, 205, 37, 81,
+        184, 214, 193, 195, 90, 205, 238, 225, 195, 104, 12, 123, 203, 57, 233, 243, 215, 145, 195,
+        196, 57, 38, 125, 172, 18, 47, 63, 165, 110, 219, 180, 40, 58, 116, 92, 254, 160, 98, 48,
+        92, 254, 232, 107, 184, 80, 234, 60, 160, 235, 249, 76, 41, 38, 165, 28, 40, 136, 74, 48,
+        166, 50, 245, 23, 201, 140, 101, 79, 93, 235, 128, 186, 146, 126, 180, 134, 43, 13, 186,
+        19, 195, 48, 168, 201, 29, 216, 95, 176, 198, 132, 188, 64, 39, 212, 150, 32, 52, 53, 38,
+        228, 199, 122, 226, 217, 75, 40, 191, 151, 48, 164, 242, 177, 79, 14, 122, 105, 151, 85,
+        88, 199, 162, 17, 96, 103, 83, 178, 128, 9, 24, 30, 74, 108, 241, 85, 240, 166, 97, 241,
+        85, 199, 11, 198, 226, 234, 70, 107, 145, 28, 208, 114, 51, 12, 234, 108, 101, 202, 112,
+        48, 185, 22, 159, 67, 109, 49, 27, 149, 90, 109, 32, 226, 112, 7, 201, 208, 209, 104, 31,
+        97, 134, 204, 145, 27, 181, 206, 181, 106, 32, 110, 136, 115, 249, 201, 111, 5, 245, 203,
+        71, 121, 169, 126, 151, 178, 236, 59, 221, 195, 48, 135, 115, 6, 50, 227, 74, 97, 107, 107,
+        213, 90, 2, 203, 154, 138, 47, 128, 52, 134, 128, 224, 51, 65, 240, 90, 8, 55, 175, 180,
+        178, 204, 206, 168, 110, 51, 57, 189, 169, 48, 169, 136, 121, 99, 51, 170, 178, 214, 74, 1,
+        96, 151, 167, 25, 173, 180, 171, 155, 10, 55, 142, 234, 190, 113, 90, 79, 80, 244, 71, 166,
+        30, 235, 113, 150, 133, 1, 218, 17, 109, 111, 223, 24, 216, 177, 41, 2, 204, 65, 221, 212,
+        207, 236, 144, 6, 65, 224, 55, 42, 1, 1, 161, 134, 118, 127, 111, 220, 110, 127, 240, 71,
+        223, 129, 12, 93, 20, 220, 60, 56, 71, 146, 184, 95, 132, 69, 28, 56, 53, 192, 213, 22,
+        119, 230, 152, 225, 182, 188, 163, 219, 37, 175, 247, 73, 14, 247, 38, 72, 243, 1, 48, 131,
+        59, 8, 13, 96, 143, 185, 127, 241, 161, 217, 24, 149, 193, 40, 16, 30, 202, 151, 28, 119,
+        240, 153, 101, 156, 61, 193, 72, 245, 199, 181, 12, 231, 65, 166, 67, 142, 121, 207, 202,
+        58, 197, 113, 188, 248, 42, 124, 105, 48, 161, 241, 55, 209, 36, 194, 27, 63, 233, 144,
+        189, 85, 117, 234, 9, 139, 46, 31, 206, 114, 95, 131, 29, 240, 13, 81, 142, 140, 133, 33,
+        30, 41, 141, 37, 80, 217, 95, 221, 76, 115, 86, 201, 165, 51, 252, 9, 28, 209, 1, 48, 150,
+        74, 248, 212, 187, 222, 66, 210, 3, 200, 19, 217, 171, 184, 42, 148, 53, 150, 57, 50, 6,
+        227, 227, 62, 49, 42, 148, 148, 157, 82, 191, 58, 24, 34, 56, 98, 120, 89, 105, 176, 85,
+        15, 253, 241, 41, 153, 195, 136, 1, 48, 142, 126, 213, 101, 223, 79, 133, 230, 105, 38,
+        161, 149, 2, 21, 136, 150, 42, 72, 218, 85, 146, 63, 223, 58, 108, 186, 183, 248, 62, 20,
+        47, 34, 113, 160, 177, 204, 181, 16, 24, 212, 224, 35, 84, 51, 168, 56, 136, 11, 1, 48,
+        135, 242, 62, 149, 230, 178, 32, 224, 119, 26, 234, 163, 237, 224, 114, 95, 112, 140, 170,
+        150, 96, 125, 136, 221, 180, 78, 18, 11, 12, 184, 2, 198, 217, 119, 43, 69, 4, 172, 109,
+        55, 183, 40, 131, 172, 161, 88, 183, 101, 1, 48, 173, 216, 22, 73, 42, 255, 211, 93, 249,
+        87, 159, 115, 61, 91, 55, 130, 17, 216, 60, 34, 122, 55, 8, 244, 244, 153, 151, 57, 5, 144,
+        178, 55, 249, 64, 211, 168, 34, 148, 56, 89, 92, 203, 70, 124, 219, 152, 253, 165, 0, 32,
+        203, 116, 63, 7, 240, 222, 82, 86, 11, 149, 167, 72, 224, 55, 190, 66, 201, 65, 168, 184,
+        96, 47, 194, 241, 168, 124, 7, 74, 214, 250, 37, 76, 32, 218, 69, 122, 103, 215, 145, 169,
+        24, 212, 229, 168, 106, 10, 144, 31, 13, 25, 178, 242, 250, 106, 159, 40, 48, 163, 165, 61,
+        130, 57, 146, 4, 73, 32, 254, 233, 125, 135, 212, 29, 111, 4, 177, 114, 15, 210, 170, 82,
+        108, 110, 62, 166, 81, 209, 106, 176, 156, 14, 133, 242, 60, 127, 120, 242, 28, 97, 0, 1,
+        32, 103, 93, 109, 89, 240, 91, 1, 84, 150, 50, 206, 157, 203, 49, 220, 120, 234, 175, 234,
+        150, 126, 225, 94, 163, 164, 199, 138, 114, 62, 99, 106, 112, 1, 32, 171, 40, 220, 82, 241,
+        203, 76, 146, 111, 139, 182, 179, 237, 182, 115, 75, 128, 201, 107, 43, 214, 0, 135, 217,
+        160, 68, 150, 232, 144, 114, 237, 98, 32, 30, 134, 232, 59, 93, 163, 253, 244, 13, 202, 52,
+        147, 168, 83, 121, 123, 95, 21, 210, 209, 225, 223, 143, 49, 10, 205, 238, 1, 22, 83, 81,
+        70, 1, 32, 26, 76, 6, 234, 160, 50, 139, 102, 161, 232, 155, 106, 130, 171, 226, 210, 233,
+        178, 85, 247, 71, 123, 55, 53, 46, 67, 148, 137, 156, 207, 208, 107, 1, 32, 102, 31, 4, 98,
+        110, 156, 144, 61, 229, 140, 198, 84, 196, 238, 128, 35, 131, 182, 137, 125, 241, 95, 69,
+        131, 170, 27, 2, 144, 75, 72, 242, 102, 3, 32, 121, 80, 45, 173, 56, 65, 218, 27, 40, 251,
+        197, 32, 169, 104, 123, 110, 90, 78, 153, 166, 38, 9, 129, 228, 99, 8, 1, 116, 142, 233,
+        162, 69, 32, 216, 169, 159, 116, 95, 12, 63, 176, 195, 6, 183, 123, 135, 75, 61, 112, 106,
+        83, 235, 176, 41, 27, 248, 48, 71, 165, 170, 12, 92, 103, 103, 81, 32, 58, 74, 75, 145,
+        192, 94, 153, 69, 80, 128, 241, 3, 16, 117, 192, 86, 161, 103, 44, 174, 211, 196, 182, 124,
+        55, 11, 107, 142, 49, 88, 6, 41, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+        6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+        6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 0, 37, 139, 240, 0, 0,
+        0, 0, 0, 0, 0, 1,
+    ];
+    pub(crate) const RECIPIENT: &str = "CytBseW6yFXUMzz4SGAKdNLGR7q3sJLLYxyBGvutNEQV.4QXYyEVc5fUDjmmi8PrHN9tdUFV4PCvSJE1278cHyvoe@4sBbL1ngf1vtNqykydQKTFh26sQCw888GpUqvPvyNB4f";
+}
@@ -29,7 +29,7 @@ pub type Taken = Option<SystemTime>;

 pub const BANDWIDTH_CAP_PER_DAY: u64 = 1024 * 1024 * 1024; // 1 GB

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct InitMessage {
    /// Base64 encoded x25519 public key
    pub pub_key: PeerPublicKey,
@@ -41,7 +41,7 @@ impl InitMessage {
    }
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct FinalMessage {
    /// Gateway client data
    pub gateway_client: GatewayClient,
@@ -50,28 +50,28 @@ pub struct FinalMessage {
    pub credential: Option<CredentialSpendingData>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct RegistrationData {
    pub nonce: u64,
    pub gateway_data: GatewayClient,
    pub wg_port: u16,
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct RegistredData {
    pub pub_key: PeerPublicKey,
    pub private_ip: IpAddr,
    pub wg_port: u16,
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct RemainingBandwidthData {
    pub available_bandwidth: i64,
 }

 /// Client that wants to register sends its PublicKey bytes mac digest encrypted with a DH shared secret.
 /// Gateway/Nym node can then verify pub_key payload using the same process
-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct GatewayClient {
    /// Base64 encoded x25519 public key
    pub pub_key: PeerPublicKey,
@@ -147,7 +147,7 @@ impl GatewayClient {

 // TODO: change the inner type into generic array of size HmacSha256::OutputSize
 // TODO2: rely on our internal crypto/hmac
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct ClientMac(Vec<u8>);

 impl fmt::Display for ClientMac {
@@ -87,7 +87,7 @@ impl AuthenticatorRequest {
    }
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub enum AuthenticatorRequestData {
    Initial(InitMessage),
    Final(Box<FinalMessage>),
@@ -100,28 +100,28 @@ impl AuthenticatorResponse {
    }
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub enum AuthenticatorResponseData {
    PendingRegistration(PendingRegistrationResponse),
    Registered(RegisteredResponse),
    RemainingBandwidth(RemainingBandwidthResponse),
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct PendingRegistrationResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
    pub reply: RegistrationData,
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct RegisteredResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
    pub reply: RegistredData,
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct RemainingBandwidthResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
@@ -19,6 +19,24 @@ impl From<v2::request::AuthenticatorRequest> for v3::request::AuthenticatorReque
    }
 }

+impl TryFrom<v3::request::AuthenticatorRequest> for v2::request::AuthenticatorRequest {
+    type Error = crate::Error;
+
+    fn try_from(
+        authenticator_request: v3::request::AuthenticatorRequest,
+    ) -> Result<Self, Self::Error> {
+        Ok(Self {
+            protocol: Protocol {
+                version: 2,
+                service_provider_type: ServiceProviderType::Authenticator,
+            },
+            data: authenticator_request.data.try_into()?,
+            reply_to: authenticator_request.reply_to,
+            request_id: authenticator_request.request_id,
+        })
+    }
+}
+
 impl From<v2::request::AuthenticatorRequestData> for v3::request::AuthenticatorRequestData {
    fn from(authenticator_request_data: v2::request::AuthenticatorRequestData) -> Self {
        match authenticator_request_data {
@@ -35,6 +53,29 @@ impl From<v2::request::AuthenticatorRequestData> for v3::request::AuthenticatorR
    }
 }

+impl TryFrom<v3::request::AuthenticatorRequestData> for v2::request::AuthenticatorRequestData {
+    type Error = crate::Error;
+
+    fn try_from(
+        authenticator_request_data: v3::request::AuthenticatorRequestData,
+    ) -> Result<Self, Self::Error> {
+        match authenticator_request_data {
+            v3::request::AuthenticatorRequestData::Initial(init_msg) => Ok(
+                v2::request::AuthenticatorRequestData::Initial(init_msg.into()),
+            ),
+            v3::request::AuthenticatorRequestData::Final(gw_client) => Ok(
+                v2::request::AuthenticatorRequestData::Final(gw_client.into()),
+            ),
+            v3::request::AuthenticatorRequestData::QueryBandwidth(pub_key) => Ok(
+                v2::request::AuthenticatorRequestData::QueryBandwidth(pub_key),
+            ),
+            v3::request::AuthenticatorRequestData::TopUpBandwidth(_) => Err(
+                Self::Error::Conversion("no top up bandwidth variant in v2".to_string()),
+            ),
+        }
+    }
+}
+
 impl From<v2::registration::InitMessage> for v3::registration::InitMessage {
    fn from(init_msg: v2::registration::InitMessage) -> Self {
        Self {
@@ -43,6 +84,14 @@ impl From<v2::registration::InitMessage> for v3::registration::InitMessage {
    }
 }

+impl From<v3::registration::InitMessage> for v2::registration::InitMessage {
+    fn from(init_msg: v3::registration::InitMessage) -> Self {
+        Self {
+            pub_key: init_msg.pub_key,
+        }
+    }
+}
+
 impl From<Box<v2::registration::FinalMessage>> for Box<v3::registration::FinalMessage> {
    fn from(gw_client: Box<v2::registration::FinalMessage>) -> Self {
        Box::new(v3::registration::FinalMessage {
@@ -52,6 +101,15 @@ impl From<Box<v2::registration::FinalMessage>> for Box<v3::registration::FinalMe
    }
 }

+impl From<Box<v3::registration::FinalMessage>> for Box<v2::registration::FinalMessage> {
+    fn from(gw_client: Box<v3::registration::FinalMessage>) -> Self {
+        Box::new(v2::registration::FinalMessage {
+            gateway_client: gw_client.gateway_client.into(),
+            credential: gw_client.credential,
+        })
+    }
+}
+
 impl From<v2::registration::GatewayClient> for v3::registration::GatewayClient {
    fn from(gw_client: v2::registration::GatewayClient) -> Self {
        Self {
@@ -93,7 +151,10 @@ impl TryFrom<v3::response::AuthenticatorResponse> for v2::response::Authenticato
        Ok(Self {
            data: authenticator_response.data.try_into()?,
            reply_to: authenticator_response.reply_to,
-            protocol: authenticator_response.protocol,
+            protocol: Protocol {
+                version: 2,
+                service_provider_type: authenticator_response.protocol.service_provider_type,
+            },
        })
    }
 }
@@ -101,7 +162,10 @@ impl TryFrom<v3::response::AuthenticatorResponse> for v2::response::Authenticato
 impl From<v2::response::AuthenticatorResponse> for v3::response::AuthenticatorResponse {
    fn from(value: v2::response::AuthenticatorResponse) -> Self {
        Self {
-            protocol: value.protocol,
+            protocol: Protocol {
+                version: 3,
+                service_provider_type: value.protocol.service_provider_type,
+            },
            data: value.data.into(),
            reply_to: value.reply_to,
        }
@@ -270,3 +334,511 @@ impl From<v2::registration::RemainingBandwidthData> for v3::registration::Remain
        }
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use std::{net::IpAddr, str::FromStr};
+
+    use nym_credentials_interface::CredentialSpendingData;
+    use nym_crypto::asymmetric::encryption::PrivateKey;
+    use nym_sphinx::addressing::Recipient;
+    use nym_wireguard_types::PeerPublicKey;
+    use x25519_dalek::PublicKey;
+
+    use super::*;
+    use crate::util::tests::{CREDENTIAL_BYTES, RECIPIENT};
+
+    #[test]
+    fn upgrade_initial_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) = v2::request::AuthenticatorRequest::new_initial_request(
+            v2::registration::InitMessage::new(pub_key),
+            reply_to,
+        );
+        let upgraded_msg = v3::request::AuthenticatorRequest::from(msg);
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v3::request::AuthenticatorRequestData::Initial(v3::registration::InitMessage {
+                pub_key
+            })
+        );
+    }
+
+    #[test]
+    fn downgrade_initial_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) = v3::request::AuthenticatorRequest::new_initial_request(
+            v3::registration::InitMessage::new(pub_key),
+            reply_to,
+        );
+        let downgraded_msg = v2::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 2,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v2::request::AuthenticatorRequestData::Initial(v2::registration::InitMessage {
+                pub_key
+            })
+        );
+    }
+
+    #[test]
+    fn upgrade_final_req() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let private_ip = IpAddr::from_str("10.10.10.10").unwrap();
+        let nonce = 42;
+        let gateway_client = v2::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            private_ip,
+            nonce,
+        );
+        let credential = Some(CredentialSpendingData::try_from_bytes(&CREDENTIAL_BYTES).unwrap());
+        let final_message = v2::registration::FinalMessage {
+            gateway_client,
+            credential: credential.clone(),
+        };
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) =
+            v2::request::AuthenticatorRequest::new_final_request(final_message, reply_to);
+        let upgraded_msg = v3::request::AuthenticatorRequest::from(msg);
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v3::request::AuthenticatorRequestData::Final(Box::new(
+                v3::registration::FinalMessage {
+                    gateway_client: v3::registration::GatewayClient::new(
+                        &local_secret,
+                        (&remote_secret).into(),
+                        private_ip,
+                        nonce,
+                    ),
+                    credential
+                }
+            ))
+        );
+    }
+
+    #[test]
+    fn downgrade_final_req() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let private_ip = IpAddr::from_str("10.10.10.10").unwrap();
+        let nonce = 42;
+        let gateway_client = v3::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            private_ip,
+            nonce,
+        );
+        let credential = Some(CredentialSpendingData::try_from_bytes(&CREDENTIAL_BYTES).unwrap());
+        let final_message = v3::registration::FinalMessage {
+            gateway_client,
+            credential: credential.clone(),
+        };
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) =
+            v3::request::AuthenticatorRequest::new_final_request(final_message, reply_to);
+        let upgraded_msg = v2::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 2,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v2::request::AuthenticatorRequestData::Final(Box::new(
+                v2::registration::FinalMessage {
+                    gateway_client: v2::registration::GatewayClient::new(
+                        &local_secret,
+                        (&remote_secret).into(),
+                        private_ip,
+                        nonce,
+                    ),
+                    credential
+                }
+            ))
+        );
+    }
+
+    #[test]
+    fn upgrade_query_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) = v2::request::AuthenticatorRequest::new_query_request(pub_key, reply_to);
+        let upgraded_msg = v3::request::AuthenticatorRequest::from(msg);
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v3::request::AuthenticatorRequestData::QueryBandwidth(pub_key)
+        );
+    }
+
+    #[test]
+    fn downgrade_query_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) = v3::request::AuthenticatorRequest::new_query_request(pub_key, reply_to);
+        let downgraded_msg = v2::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 2,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v2::request::AuthenticatorRequestData::QueryBandwidth(pub_key)
+        );
+    }
+
+    #[test]
+    fn downgrade_topup_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let credential = CredentialSpendingData::try_from_bytes(&CREDENTIAL_BYTES).unwrap();
+        let top_up_message = v3::topup::TopUpMessage {
+            pub_key,
+            credential,
+        };
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) =
+            v3::request::AuthenticatorRequest::new_topup_request(top_up_message, reply_to);
+        assert!(v2::request::AuthenticatorRequest::try_from(msg).is_err());
+    }
+
+    #[test]
+    fn upgrade_pending_reg_resp() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let private_ip = IpAddr::from_str("10.10.10.10").unwrap();
+        let nonce = 42;
+        let wg_port = 51822;
+        let gateway_data = v2::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            private_ip,
+            nonce,
+        );
+        let registration_data = v2::registration::RegistrationData {
+            nonce,
+            gateway_data,
+            wg_port,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v2::response::AuthenticatorResponse::new_pending_registration_success(
+            registration_data,
+            request_id,
+            reply_to,
+        );
+        let upgraded_msg = v3::response::AuthenticatorResponse::from(msg);
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v3::response::AuthenticatorResponseData::PendingRegistration(
+                v3::response::PendingRegistrationResponse {
+                    request_id,
+                    reply_to,
+                    reply: v3::registration::RegistrationData {
+                        nonce,
+                        gateway_data: v3::registration::GatewayClient::new(
+                            &local_secret,
+                            (&remote_secret).into(),
+                            private_ip,
+                            nonce,
+                        ),
+                        wg_port,
+                    }
+                }
+            )
+        );
+    }
+
+    #[test]
+    fn downgrade_pending_reg_resp() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let private_ip = IpAddr::from_str("10.10.10.10").unwrap();
+        let nonce = 42;
+        let wg_port = 51822;
+        let gateway_data = v3::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            private_ip,
+            nonce,
+        );
+        let registration_data = v3::registration::RegistrationData {
+            nonce,
+            gateway_data,
+            wg_port,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v3::response::AuthenticatorResponse::new_pending_registration_success(
+            registration_data,
+            request_id,
+            reply_to,
+        );
+        let downgraded_msg = v2::response::AuthenticatorResponse::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 2,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v2::response::AuthenticatorResponseData::PendingRegistration(
+                v2::response::PendingRegistrationResponse {
+                    request_id,
+                    reply_to,
+                    reply: v2::registration::RegistrationData {
+                        nonce,
+                        gateway_data: v2::registration::GatewayClient::new(
+                            &local_secret,
+                            (&remote_secret).into(),
+                            private_ip,
+                            nonce,
+                        ),
+                        wg_port,
+                    }
+                }
+            )
+        );
+    }
+
+    #[test]
+    fn upgrade_registered_resp() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let private_ip = IpAddr::from_str("10.10.10.10").unwrap();
+        let wg_port = 51822;
+        let registred_data = v2::registration::RegistredData {
+            pub_key,
+            private_ip,
+            wg_port,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v2::response::AuthenticatorResponse::new_registered(
+            registred_data,
+            reply_to,
+            request_id,
+        );
+        let upgraded_msg = v3::response::AuthenticatorResponse::from(msg);
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v3::response::AuthenticatorResponseData::Registered(v3::response::RegisteredResponse {
+                request_id,
+                reply_to,
+                reply: v3::registration::RegistredData {
+                    wg_port,
+                    pub_key,
+                    private_ip
+                }
+            })
+        );
+    }
+
+    #[test]
+    fn downgrade_registered_resp() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let private_ip = IpAddr::from_str("10.10.10.10").unwrap();
+        let wg_port = 51822;
+        let registred_data = v3::registration::RegistredData {
+            pub_key,
+            private_ip,
+            wg_port,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v3::response::AuthenticatorResponse::new_registered(
+            registred_data,
+            reply_to,
+            request_id,
+        );
+        let downgraded_msg = v2::response::AuthenticatorResponse::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 2,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v2::response::AuthenticatorResponseData::Registered(v2::response::RegisteredResponse {
+                request_id,
+                reply_to,
+                reply: v2::registration::RegistredData {
+                    wg_port,
+                    pub_key,
+                    private_ip
+                }
+            })
+        );
+    }
+
+    #[test]
+    fn upgrade_remaining_bandwidth_resp() {
+        let available_bandwidth = 42;
+        let remaining_bandwidth_data = Some(v2::registration::RemainingBandwidthData {
+            available_bandwidth,
+        });
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v2::response::AuthenticatorResponse::new_remaining_bandwidth(
+            remaining_bandwidth_data,
+            reply_to,
+            request_id,
+        );
+        let upgraded_msg = v3::response::AuthenticatorResponse::from(msg);
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v3::response::AuthenticatorResponseData::RemainingBandwidth(
+                v3::response::RemainingBandwidthResponse {
+                    request_id,
+                    reply_to,
+                    reply: Some(v3::registration::RemainingBandwidthData {
+                        available_bandwidth,
+                    })
+                }
+            )
+        );
+    }
+
+    #[test]
+    fn downgrade_remaining_bandwidth_resp() {
+        let available_bandwidth = 42;
+        let remaining_bandwidth_data = Some(v3::registration::RemainingBandwidthData {
+            available_bandwidth,
+        });
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v3::response::AuthenticatorResponse::new_remaining_bandwidth(
+            remaining_bandwidth_data,
+            reply_to,
+            request_id,
+        );
+        let downgraded_msg = v2::response::AuthenticatorResponse::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 2,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v2::response::AuthenticatorResponseData::RemainingBandwidth(
+                v2::response::RemainingBandwidthResponse {
+                    request_id,
+                    reply_to,
+                    reply: Some(v2::registration::RemainingBandwidthData {
+                        available_bandwidth,
+                    })
+                }
+            )
+        );
+    }
+
+    #[test]
+    fn downgrade_topup_resp() {
+        let available_bandwidth = 42;
+        let remaining_bandwidth_data = v3::registration::RemainingBandwidthData {
+            available_bandwidth,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v3::response::AuthenticatorResponse::new_topup_bandwidth(
+            remaining_bandwidth_data,
+            reply_to,
+            request_id,
+        );
+        assert!(v2::response::AuthenticatorResponse::try_from(msg).is_err());
+    }
+}
@@ -29,7 +29,7 @@ pub type Taken = Option<SystemTime>;

 pub const BANDWIDTH_CAP_PER_DAY: u64 = 250 * 1024 * 1024 * 1024; // 250 GB

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct InitMessage {
    /// Base64 encoded x25519 public key
    pub pub_key: PeerPublicKey,
@@ -41,7 +41,7 @@ impl InitMessage {
    }
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct FinalMessage {
    /// Gateway client data
    pub gateway_client: GatewayClient,
@@ -50,28 +50,28 @@ pub struct FinalMessage {
    pub credential: Option<CredentialSpendingData>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct RegistrationData {
    pub nonce: u64,
    pub gateway_data: GatewayClient,
    pub wg_port: u16,
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct RegistredData {
    pub pub_key: PeerPublicKey,
    pub private_ip: IpAddr,
    pub wg_port: u16,
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct RemainingBandwidthData {
    pub available_bandwidth: i64,
 }

 /// Client that wants to register sends its PublicKey bytes mac digest encrypted with a DH shared secret.
 /// Gateway/Nym node can then verify pub_key payload using the same process
-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct GatewayClient {
    /// Base64 encoded x25519 public key
    pub pub_key: PeerPublicKey,
@@ -147,7 +147,7 @@ impl GatewayClient {

 // TODO: change the inner type into generic array of size HmacSha256::OutputSize
 // TODO2: rely on our internal crypto/hmac
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct ClientMac(Vec<u8>);

 impl fmt::Display for ClientMac {
@@ -106,7 +106,7 @@ impl AuthenticatorRequest {
    }
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub enum AuthenticatorRequestData {
    Initial(InitMessage),
    Final(Box<FinalMessage>),
@@ -120,7 +120,7 @@ impl AuthenticatorResponse {
    }
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub enum AuthenticatorResponseData {
    PendingRegistration(PendingRegistrationResponse),
    Registered(RegisteredResponse),
@@ -128,28 +128,28 @@ pub enum AuthenticatorResponseData {
    TopUpBandwidth(TopUpBandwidthResponse),
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct PendingRegistrationResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
    pub reply: RegistrationData,
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct RegisteredResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
    pub reply: RegistredData,
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct RemainingBandwidthResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
    pub reply: Option<RemainingBandwidthData>,
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct TopUpBandwidthResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
@@ -5,7 +5,7 @@ use nym_credentials_interface::CredentialSpendingData;
 use nym_wireguard_types::PeerPublicKey;
 use serde::{Deserialize, Serialize};

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct TopUpMessage {
    /// Base64 encoded x25519 public key
    pub pub_key: PeerPublicKey,
@@ -3,37 +3,82 @@

 use nym_service_provider_requests_common::{Protocol, ServiceProviderType};

-use crate::{v2, v3, v4};
+use crate::{v3, v4};

-impl From<v3::request::AuthenticatorRequest> for v4::request::AuthenticatorRequest {
-    fn from(authenticator_request: v3::request::AuthenticatorRequest) -> Self {
-        Self {
+impl TryFrom<v3::request::AuthenticatorRequest> for v4::request::AuthenticatorRequest {
+    type Error = crate::Error;
+    fn try_from(
+        authenticator_request: v3::request::AuthenticatorRequest,
+    ) -> Result<Self, Self::Error> {
+        Ok(Self {
            protocol: Protocol {
                version: 4,
                service_provider_type: ServiceProviderType::Authenticator,
            },
-            data: authenticator_request.data.into(),
+            data: authenticator_request.data.try_into()?,
            reply_to: authenticator_request.reply_to,
            request_id: authenticator_request.request_id,
+        })
+    }
+}
+
+impl TryFrom<v4::request::AuthenticatorRequest> for v3::request::AuthenticatorRequest {
+    type Error = crate::Error;
+    fn try_from(
+        authenticator_request: v4::request::AuthenticatorRequest,
+    ) -> Result<Self, Self::Error> {
+        Ok(Self {
+            protocol: Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator,
+            },
+            data: authenticator_request.data.try_into()?,
+            reply_to: authenticator_request.reply_to,
+            request_id: authenticator_request.request_id,
+        })
+    }
+}
+
+impl TryFrom<v3::request::AuthenticatorRequestData> for v4::request::AuthenticatorRequestData {
+    type Error = crate::Error;
+    fn try_from(
+        authenticator_request_data: v3::request::AuthenticatorRequestData,
+    ) -> Result<Self, Self::Error> {
+        match authenticator_request_data {
+            v3::request::AuthenticatorRequestData::Initial(init_msg) => Ok(
+                v4::request::AuthenticatorRequestData::Initial(init_msg.into()),
+            ),
+            v3::request::AuthenticatorRequestData::Final(_) => Err(Self::Error::Conversion(
+                "mac hash breaking change".to_string(),
+            )),
+            v3::request::AuthenticatorRequestData::QueryBandwidth(pub_key) => Ok(
+                v4::request::AuthenticatorRequestData::QueryBandwidth(pub_key),
+            ),
+            v3::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message) => Ok(
+                v4::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message.into()),
+            ),
        }
    }
 }

-impl From<v3::request::AuthenticatorRequestData> for v4::request::AuthenticatorRequestData {
-    fn from(authenticator_request_data: v3::request::AuthenticatorRequestData) -> Self {
+impl TryFrom<v4::request::AuthenticatorRequestData> for v3::request::AuthenticatorRequestData {
+    type Error = crate::Error;
+    fn try_from(
+        authenticator_request_data: v4::request::AuthenticatorRequestData,
+    ) -> Result<Self, Self::Error> {
        match authenticator_request_data {
-            v3::request::AuthenticatorRequestData::Initial(init_msg) => {
-                v4::request::AuthenticatorRequestData::Initial(init_msg.into())
-            }
-            v3::request::AuthenticatorRequestData::Final(gw_client) => {
-                v4::request::AuthenticatorRequestData::Final(gw_client.into())
-            }
-            v3::request::AuthenticatorRequestData::QueryBandwidth(pub_key) => {
-                v4::request::AuthenticatorRequestData::QueryBandwidth(pub_key)
-            }
-            v3::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message) => {
-                v4::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message.into())
-            }
+            v4::request::AuthenticatorRequestData::Initial(init_msg) => Ok(
+                v3::request::AuthenticatorRequestData::Initial(init_msg.into()),
+            ),
+            v4::request::AuthenticatorRequestData::Final(_) => Err(Self::Error::Conversion(
+                "mac hash breaking change".to_string(),
+            )),
+            v4::request::AuthenticatorRequestData::QueryBandwidth(pub_key) => Ok(
+                v3::request::AuthenticatorRequestData::QueryBandwidth(pub_key),
+            ),
+            v4::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message) => Ok(
+                v3::request::AuthenticatorRequestData::TopUpBandwidth(top_up_message.into()),
+            ),
        }
    }
 }
@@ -46,12 +91,11 @@ impl From<v3::registration::InitMessage> for v4::registration::InitMessage {
    }
 }

-impl From<Box<v3::registration::FinalMessage>> for Box<v4::registration::FinalMessage> {
-    fn from(gw_client: Box<v3::registration::FinalMessage>) -> Self {
-        Box::new(v4::registration::FinalMessage {
-            gateway_client: gw_client.gateway_client.into(),
-            credential: gw_client.credential,
-        })
+impl From<v4::registration::InitMessage> for v3::registration::InitMessage {
+    fn from(init_msg: v4::registration::InitMessage) -> Self {
+        Self {
+            pub_key: init_msg.pub_key,
+        }
    }
 }

@@ -64,67 +108,26 @@ impl From<Box<v3::topup::TopUpMessage>> for Box<v4::topup::TopUpMessage> {
    }
 }

-impl From<v2::registration::GatewayClient> for v4::registration::GatewayClient {
-    fn from(gw_client: v2::registration::GatewayClient) -> Self {
-        Self {
-            pub_key: gw_client.pub_key,
-            private_ips: gw_client.private_ip.into(),
-            mac: gw_client.mac.into(),
-        }
+impl From<Box<v4::topup::TopUpMessage>> for Box<v3::topup::TopUpMessage> {
+    fn from(top_up_message: Box<v4::topup::TopUpMessage>) -> Self {
+        Box::new(v3::topup::TopUpMessage {
+            pub_key: top_up_message.pub_key,
+            credential: top_up_message.credential,
+        })
    }
 }

-impl From<v3::registration::GatewayClient> for v4::registration::GatewayClient {
-    fn from(gw_client: v3::registration::GatewayClient) -> Self {
-        Self {
-            pub_key: gw_client.pub_key,
-            private_ips: gw_client.private_ip.into(),
-            mac: gw_client.mac.into(),
-        }
-    }
-}
-
-impl From<v4::registration::GatewayClient> for v3::registration::GatewayClient {
-    fn from(gw_client: v4::registration::GatewayClient) -> Self {
-        Self {
-            pub_key: gw_client.pub_key,
-            private_ip: gw_client.private_ips.ipv4.into(),
-            mac: gw_client.mac.into(),
-        }
-    }
-}
-
-impl From<v4::registration::GatewayClient> for v2::registration::GatewayClient {
-    fn from(gw_client: v4::registration::GatewayClient) -> Self {
-        Self {
-            pub_key: gw_client.pub_key,
-            private_ip: gw_client.private_ips.ipv4.into(),
-            mac: gw_client.mac.into(),
-        }
-    }
-}
-
-impl From<v2::registration::ClientMac> for v4::registration::ClientMac {
-    fn from(mac: v2::registration::ClientMac) -> Self {
-        Self::new(mac.to_vec())
-    }
-}
-
-impl From<v3::registration::ClientMac> for v4::registration::ClientMac {
-    fn from(mac: v3::registration::ClientMac) -> Self {
-        Self::new(mac.to_vec())
-    }
-}
-
-impl From<v4::registration::ClientMac> for v3::registration::ClientMac {
-    fn from(mac: v4::registration::ClientMac) -> Self {
-        Self::new(mac.to_vec())
-    }
-}
-
-impl From<v4::registration::ClientMac> for v2::registration::ClientMac {
-    fn from(mac: v4::registration::ClientMac) -> Self {
-        Self::new(mac.to_vec())
+impl TryFrom<v3::response::AuthenticatorResponse> for v4::response::AuthenticatorResponse {
+    type Error = crate::Error;
+    fn try_from(value: v3::response::AuthenticatorResponse) -> Result<Self, Self::Error> {
+        Ok(Self {
+            protocol: Protocol {
+                version: 4,
+                service_provider_type: value.protocol.service_provider_type,
+            },
+            data: value.data.try_into()?,
+            reply_to: value.reply_to,
+        })
    }
 }

@@ -137,11 +140,40 @@ impl TryFrom<v4::response::AuthenticatorResponse> for v3::response::Authenticato
        Ok(Self {
            data: authenticator_response.data.try_into()?,
            reply_to: authenticator_response.reply_to,
-            protocol: authenticator_response.protocol,
+            protocol: Protocol {
+                version: 3,
+                service_provider_type: authenticator_response.protocol.service_provider_type,
+            },
        })
    }
 }

+impl TryFrom<v3::response::AuthenticatorResponseData> for v4::response::AuthenticatorResponseData {
+    type Error = crate::Error;
+    fn try_from(
+        authenticator_response_data: v3::response::AuthenticatorResponseData,
+    ) -> Result<Self, Self::Error> {
+        match authenticator_response_data {
+            v3::response::AuthenticatorResponseData::PendingRegistration(_) => Err(
+                Self::Error::Conversion("mac hash breaking change".to_string()),
+            ),
+
+            v3::response::AuthenticatorResponseData::Registered(registered_response) => Ok(
+                v4::response::AuthenticatorResponseData::Registered(registered_response.into()),
+            ),
+
+            v3::response::AuthenticatorResponseData::RemainingBandwidth(
+                remaining_bandwidth_response,
+            ) => Ok(v4::response::AuthenticatorResponseData::RemainingBandwidth(
+                remaining_bandwidth_response.into(),
+            )),
+            v3::response::AuthenticatorResponseData::TopUpBandwidth(top_up_response) => Ok(
+                v4::response::AuthenticatorResponseData::TopUpBandwidth(top_up_response.into()),
+            ),
+        }
+    }
+}
+
 impl TryFrom<v4::response::AuthenticatorResponseData> for v3::response::AuthenticatorResponseData {
    type Error = crate::Error;

@@ -149,13 +181,10 @@ impl TryFrom<v4::response::AuthenticatorResponseData> for v3::response::Authenti
        authenticator_response_data: v4::response::AuthenticatorResponseData,
    ) -> Result<Self, Self::Error> {
        match authenticator_response_data {
-            v4::response::AuthenticatorResponseData::PendingRegistration(
-                pending_registration_response,
-            ) => Ok(
-                v3::response::AuthenticatorResponseData::PendingRegistration(
-                    pending_registration_response.into(),
-                ),
+            v4::response::AuthenticatorResponseData::PendingRegistration(_) => Err(
+                Self::Error::Conversion("mac hash breaking change".to_string()),
            ),
+
            v4::response::AuthenticatorResponseData::Registered(registered_response) => Ok(
                v3::response::AuthenticatorResponseData::Registered(registered_response.into()),
            ),
@@ -173,8 +202,8 @@ impl TryFrom<v4::response::AuthenticatorResponseData> for v3::response::Authenti
    }
 }

-impl From<v4::response::PendingRegistrationResponse> for v3::response::PendingRegistrationResponse {
-    fn from(value: v4::response::PendingRegistrationResponse) -> Self {
+impl From<v4::response::RegisteredResponse> for v3::response::RegisteredResponse {
+    fn from(value: v4::response::RegisteredResponse) -> Self {
        Self {
            request_id: value.request_id,
            reply_to: value.reply_to,
@@ -183,8 +212,8 @@ impl From<v4::response::PendingRegistrationResponse> for v3::response::PendingRe
    }
 }

-impl From<v4::response::RegisteredResponse> for v3::response::RegisteredResponse {
-    fn from(value: v4::response::RegisteredResponse) -> Self {
+impl From<v3::response::RegisteredResponse> for v4::response::RegisteredResponse {
+    fn from(value: v3::response::RegisteredResponse) -> Self {
        Self {
            request_id: value.request_id,
            reply_to: value.reply_to,
@@ -193,6 +222,16 @@ impl From<v4::response::RegisteredResponse> for v3::response::RegisteredResponse
    }
 }

+impl From<v3::response::RemainingBandwidthResponse> for v4::response::RemainingBandwidthResponse {
+    fn from(value: v3::response::RemainingBandwidthResponse) -> Self {
+        Self {
+            request_id: value.request_id,
+            reply_to: value.reply_to,
+            reply: value.reply.map(Into::into),
+        }
+    }
+}
+
 impl From<v4::response::RemainingBandwidthResponse> for v3::response::RemainingBandwidthResponse {
    fn from(value: v4::response::RemainingBandwidthResponse) -> Self {
        Self {
@@ -203,11 +242,31 @@ impl From<v4::response::RemainingBandwidthResponse> for v3::response::RemainingB
    }
 }

-impl From<v4::registration::RegistrationData> for v3::registration::RegistrationData {
-    fn from(value: v4::registration::RegistrationData) -> Self {
+impl From<v3::response::TopUpBandwidthResponse> for v4::response::TopUpBandwidthResponse {
+    fn from(value: v3::response::TopUpBandwidthResponse) -> Self {
        Self {
-            nonce: value.nonce,
-            gateway_data: value.gateway_data.into(),
+            request_id: value.request_id,
+            reply_to: value.reply_to,
+            reply: value.reply.into(),
+        }
+    }
+}
+
+impl From<v4::response::TopUpBandwidthResponse> for v3::response::TopUpBandwidthResponse {
+    fn from(value: v4::response::TopUpBandwidthResponse) -> Self {
+        Self {
+            request_id: value.request_id,
+            reply_to: value.reply_to,
+            reply: value.reply.into(),
+        }
+    }
+}
+
+impl From<v3::registration::RegistredData> for v4::registration::RegistredData {
+    fn from(value: v3::registration::RegistredData) -> Self {
+        Self {
+            pub_key: value.pub_key,
+            private_ips: value.private_ip.into(),
            wg_port: value.wg_port,
        }
    }
@@ -223,6 +282,14 @@ impl From<v4::registration::RegistredData> for v3::registration::RegistredData {
    }
 }

+impl From<v3::registration::RemainingBandwidthData> for v4::registration::RemainingBandwidthData {
+    fn from(value: v3::registration::RemainingBandwidthData) -> Self {
+        Self {
+            available_bandwidth: value.available_bandwidth,
+        }
+    }
+}
+
 impl From<v4::registration::RemainingBandwidthData> for v3::registration::RemainingBandwidthData {
    fn from(value: v4::registration::RemainingBandwidthData) -> Self {
        Self {
@@ -230,3 +297,441 @@ impl From<v4::registration::RemainingBandwidthData> for v3::registration::Remain
        }
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use std::{
+        net::{Ipv4Addr, Ipv6Addr},
+        str::FromStr,
+    };
+
+    use nym_credentials_interface::CredentialSpendingData;
+    use nym_crypto::asymmetric::encryption::PrivateKey;
+    use nym_sphinx::addressing::Recipient;
+    use nym_wireguard_types::PeerPublicKey;
+    use x25519_dalek::PublicKey;
+
+    use super::*;
+    use crate::util::tests::{CREDENTIAL_BYTES, RECIPIENT};
+
+    #[test]
+    fn upgrade_initial_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) = v3::request::AuthenticatorRequest::new_initial_request(
+            v3::registration::InitMessage::new(pub_key),
+            reply_to,
+        );
+        let upgraded_msg = v4::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 4,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v4::request::AuthenticatorRequestData::Initial(v4::registration::InitMessage {
+                pub_key
+            })
+        );
+    }
+
+    #[test]
+    fn downgrade_initial_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) = v4::request::AuthenticatorRequest::new_initial_request(
+            v4::registration::InitMessage::new(pub_key),
+            reply_to,
+        );
+        let downgraded_msg = v3::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v3::request::AuthenticatorRequestData::Initial(v3::registration::InitMessage {
+                pub_key
+            })
+        );
+    }
+
+    #[test]
+    fn upgrade_final_req() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let ipv4 = Ipv4Addr::from_str("10.10.10.10").unwrap();
+        let nonce = 42;
+        let gateway_client = v3::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            ipv4.into(),
+            nonce,
+        );
+        let credential = Some(CredentialSpendingData::try_from_bytes(&CREDENTIAL_BYTES).unwrap());
+        let final_message = v3::registration::FinalMessage {
+            gateway_client,
+            credential: credential.clone(),
+        };
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) =
+            v3::request::AuthenticatorRequest::new_final_request(final_message, reply_to);
+        assert!(v4::request::AuthenticatorRequest::try_from(msg).is_err());
+    }
+
+    #[test]
+    fn downgrade_final_req() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let ipv4 = Ipv4Addr::from_str("10.10.10.10").unwrap();
+        let private_ips =
+            v4::registration::IpPair::new(ipv4, Ipv6Addr::from_str("fc01::10").unwrap());
+        let nonce = 42;
+        let gateway_client = v4::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            private_ips,
+            nonce,
+        );
+        let credential = Some(CredentialSpendingData::try_from_bytes(&CREDENTIAL_BYTES).unwrap());
+        let final_message = v4::registration::FinalMessage {
+            gateway_client,
+            credential: credential.clone(),
+        };
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) =
+            v4::request::AuthenticatorRequest::new_final_request(final_message, reply_to);
+        assert!(v3::request::AuthenticatorRequest::try_from(msg).is_err());
+    }
+
+    #[test]
+    fn upgrade_query_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) = v3::request::AuthenticatorRequest::new_query_request(pub_key, reply_to);
+        let upgraded_msg = v4::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 4,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v4::request::AuthenticatorRequestData::QueryBandwidth(pub_key)
+        );
+    }
+
+    #[test]
+    fn downgrade_query_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) = v4::request::AuthenticatorRequest::new_query_request(pub_key, reply_to);
+        let downgraded_msg = v3::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v3::request::AuthenticatorRequestData::QueryBandwidth(pub_key)
+        );
+    }
+
+    #[test]
+    fn downgrade_topup_req() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let credential = CredentialSpendingData::try_from_bytes(&CREDENTIAL_BYTES).unwrap();
+        let top_up_message = v4::topup::TopUpMessage {
+            pub_key,
+            credential: credential.clone(),
+        };
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let (msg, _) =
+            v4::request::AuthenticatorRequest::new_topup_request(top_up_message, reply_to);
+        let downgraded_msg = v3::request::AuthenticatorRequest::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v3::request::AuthenticatorRequestData::TopUpBandwidth(Box::new(
+                v3::topup::TopUpMessage {
+                    pub_key,
+                    credential
+                }
+            ))
+        );
+    }
+
+    #[test]
+    fn upgrade_pending_reg_resp() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let ipv4 = Ipv4Addr::from_str("10.10.10.10").unwrap();
+        let nonce = 42;
+        let wg_port = 51822;
+        let gateway_data = v3::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            ipv4.into(),
+            nonce,
+        );
+        let registration_data = v3::registration::RegistrationData {
+            nonce,
+            gateway_data,
+            wg_port,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v3::response::AuthenticatorResponse::new_pending_registration_success(
+            registration_data,
+            request_id,
+            reply_to,
+        );
+        assert!(v4::response::AuthenticatorResponse::try_from(msg).is_err());
+    }
+
+    #[test]
+    fn downgrade_pending_reg_resp() {
+        let mut rng = rand::thread_rng();
+
+        let local_secret = PrivateKey::new(&mut rng);
+        let remote_secret = x25519_dalek::StaticSecret::random_from_rng(&mut rng);
+        let ipv4 = Ipv4Addr::from_str("10.10.10.10").unwrap();
+        let private_ips =
+            v4::registration::IpPair::new(ipv4, Ipv6Addr::from_str("fc01::10").unwrap());
+        let nonce = 42;
+        let wg_port = 51822;
+        let gateway_data = v4::registration::GatewayClient::new(
+            &local_secret,
+            (&remote_secret).into(),
+            private_ips,
+            nonce,
+        );
+        let registration_data = v4::registration::RegistrationData {
+            nonce,
+            gateway_data,
+            wg_port,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v4::response::AuthenticatorResponse::new_pending_registration_success(
+            registration_data,
+            request_id,
+            reply_to,
+        );
+        assert!(v3::response::AuthenticatorResponse::try_from(msg).is_err());
+    }
+
+    #[test]
+    fn upgrade_registered_resp() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let ipv4 = Ipv4Addr::from_str("10.1.10.10").unwrap();
+        let private_ips =
+            v4::registration::IpPair::new(ipv4, Ipv6Addr::from_str("fc01::a0a").unwrap());
+        let wg_port = 51822;
+        let registred_data = v3::registration::RegistredData {
+            pub_key,
+            private_ip: ipv4.into(),
+            wg_port,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v3::response::AuthenticatorResponse::new_registered(
+            registred_data,
+            reply_to,
+            request_id,
+        );
+        let upgraded_msg = v4::response::AuthenticatorResponse::try_from(msg).unwrap();
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 4,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v4::response::AuthenticatorResponseData::Registered(v4::response::RegisteredResponse {
+                request_id,
+                reply_to,
+                reply: v4::registration::RegistredData {
+                    wg_port,
+                    pub_key,
+                    private_ips
+                }
+            })
+        );
+    }
+
+    #[test]
+    fn downgrade_registered_resp() {
+        let pub_key = PeerPublicKey::new(PublicKey::from([0; 32]));
+        let ipv4 = Ipv4Addr::from_str("10.10.10.10").unwrap();
+        let private_ips =
+            v4::registration::IpPair::new(ipv4, Ipv6Addr::from_str("fc01::10").unwrap());
+        let wg_port = 51822;
+        let registred_data = v4::registration::RegistredData {
+            pub_key,
+            private_ips,
+            wg_port,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v4::response::AuthenticatorResponse::new_registered(
+            registred_data,
+            reply_to,
+            request_id,
+        );
+        let downgraded_msg = v3::response::AuthenticatorResponse::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v3::response::AuthenticatorResponseData::Registered(v3::response::RegisteredResponse {
+                request_id,
+                reply_to,
+                reply: v3::registration::RegistredData {
+                    wg_port,
+                    pub_key,
+                    private_ip: ipv4.into()
+                }
+            })
+        );
+    }
+
+    #[test]
+    fn upgrade_remaining_bandwidth_resp() {
+        let available_bandwidth = 42;
+        let remaining_bandwidth_data = Some(v3::registration::RemainingBandwidthData {
+            available_bandwidth,
+        });
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v3::response::AuthenticatorResponse::new_remaining_bandwidth(
+            remaining_bandwidth_data,
+            reply_to,
+            request_id,
+        );
+        let upgraded_msg = v4::response::AuthenticatorResponse::try_from(msg).unwrap();
+
+        assert_eq!(
+            upgraded_msg.protocol,
+            Protocol {
+                version: 4,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            upgraded_msg.data,
+            v4::response::AuthenticatorResponseData::RemainingBandwidth(
+                v4::response::RemainingBandwidthResponse {
+                    request_id,
+                    reply_to,
+                    reply: Some(v4::registration::RemainingBandwidthData {
+                        available_bandwidth,
+                    })
+                }
+            )
+        );
+    }
+
+    #[test]
+    fn downgrade_remaining_bandwidth_resp() {
+        let available_bandwidth = 42;
+        let remaining_bandwidth_data = Some(v4::registration::RemainingBandwidthData {
+            available_bandwidth,
+        });
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v4::response::AuthenticatorResponse::new_remaining_bandwidth(
+            remaining_bandwidth_data,
+            reply_to,
+            request_id,
+        );
+        let downgraded_msg = v3::response::AuthenticatorResponse::try_from(msg).unwrap();
+
+        assert_eq!(
+            downgraded_msg.protocol,
+            Protocol {
+                version: 3,
+                service_provider_type: ServiceProviderType::Authenticator
+            }
+        );
+        assert_eq!(
+            downgraded_msg.data,
+            v3::response::AuthenticatorResponseData::RemainingBandwidth(
+                v3::response::RemainingBandwidthResponse {
+                    request_id,
+                    reply_to,
+                    reply: Some(v3::registration::RemainingBandwidthData {
+                        available_bandwidth,
+                    })
+                }
+            )
+        );
+    }
+
+    #[test]
+    fn downgrade_topup_resp() {
+        let available_bandwidth = 42;
+        let remaining_bandwidth_data = v4::registration::RemainingBandwidthData {
+            available_bandwidth,
+        };
+        let request_id = 123;
+        let reply_to = Recipient::try_from_base58_string(RECIPIENT).unwrap();
+
+        let msg = v4::response::AuthenticatorResponse::new_topup_bandwidth(
+            remaining_bandwidth_data,
+            reply_to,
+            request_id,
+        );
+        assert!(v3::response::AuthenticatorResponse::try_from(msg).is_err());
+    }
+}
@@ -28,7 +28,7 @@ pub type HmacSha256 = Hmac<Sha256>;
 pub type Nonce = u64;
 pub type Taken = Option<SystemTime>;

-pub const BANDWIDTH_CAP_PER_DAY: u64 = 1024 * 1024 * 1024; // 1 GB
+pub const BANDWIDTH_CAP_PER_DAY: u64 = 250 * 1024 * 1024 * 1024; // 250 GB

 #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
 pub struct IpPair {
@@ -81,7 +81,7 @@ impl From<IpAddr> for IpPair {
    }
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct InitMessage {
    /// Base64 encoded x25519 public key
    pub pub_key: PeerPublicKey,
@@ -93,7 +93,7 @@ impl InitMessage {
    }
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct FinalMessage {
    /// Gateway client data
    pub gateway_client: GatewayClient,
@@ -102,28 +102,28 @@ pub struct FinalMessage {
    pub credential: Option<CredentialSpendingData>,
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct RegistrationData {
    pub nonce: u64,
    pub gateway_data: GatewayClient,
    pub wg_port: u16,
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct RegistredData {
    pub pub_key: PeerPublicKey,
    pub private_ips: IpPair,
    pub wg_port: u16,
 }

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct RemainingBandwidthData {
    pub available_bandwidth: i64,
 }

 /// Client that wants to register sends its PublicKey bytes mac digest encrypted with a DH shared secret.
 /// Gateway/Nym node can then verify pub_key payload using the same process
-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct GatewayClient {
    /// Base64 encoded x25519 public key
    pub pub_key: PeerPublicKey,
@@ -199,7 +199,7 @@ impl GatewayClient {

 // TODO: change the inner type into generic array of size HmacSha256::OutputSize
 // TODO2: rely on our internal crypto/hmac
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct ClientMac(Vec<u8>);

 impl fmt::Display for ClientMac {
@@ -20,7 +20,7 @@ fn generate_random() -> u64 {
    rng.next_u64()
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct AuthenticatorRequest {
    pub protocol: Protocol,
    pub data: AuthenticatorRequestData,
@@ -106,7 +106,7 @@ impl AuthenticatorRequest {
    }
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub enum AuthenticatorRequestData {
    Initial(InitMessage),
    Final(Box<FinalMessage>),
@@ -10,7 +10,7 @@ use crate::make_bincode_serializer;

 use super::VERSION;

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct AuthenticatorResponse {
    pub protocol: Protocol,
    pub data: AuthenticatorResponseData,
@@ -120,7 +120,7 @@ impl AuthenticatorResponse {
    }
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub enum AuthenticatorResponseData {
    PendingRegistration(PendingRegistrationResponse),
    Registered(RegisteredResponse),
@@ -128,28 +128,28 @@ pub enum AuthenticatorResponseData {
    TopUpBandwidth(TopUpBandwidthResponse),
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct PendingRegistrationResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
    pub reply: RegistrationData,
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct RegisteredResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
    pub reply: RegistredData,
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct RemainingBandwidthResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
    pub reply: Option<RemainingBandwidthData>,
 }

-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct TopUpBandwidthResponse {
    pub request_id: u64,
    pub reply_to: Recipient,
@@ -5,7 +5,7 @@ use nym_credentials_interface::CredentialSpendingData;
 use nym_wireguard_types::PeerPublicKey;
 use serde::{Deserialize, Serialize};

-#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct TopUpMessage {
    /// Base64 encoded x25519 public key
    pub pub_key: PeerPublicKey,
@@ -15,7 +15,6 @@ const-str = { workspace = true }
 log = { workspace = true }
 pretty_env_logger = { workspace = true }
 schemars = { workspace = true, features = ["preserve_order"], optional = true }
-semver.workspace = true
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true, optional = true }

@@ -44,5 +43,5 @@ tracing = [
    "tracing-opentelemetry",
    "opentelemetry",
 ]
-clap = [ "dep:clap", "dep:clap_complete", "dep:clap_complete_fig" ]
+clap = ["dep:clap", "dep:clap_complete", "dep:clap_complete_fig"]
 models = []
@@ -3,7 +3,6 @@

 pub mod build_information;
 pub mod logging;
-pub mod version_checker;

 #[cfg(feature = "clap")]
 pub mod completions;
@@ -1,78 +0,0 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
-// SPDX-License-Identifier: Apache-2.0
-
-pub use semver::Version;
-
-/// Checks if the version is minor version compatible.
-///
-/// Checks whether given `version` is compatible with a given semantic version requirement `req`
-/// according to major-minor semver rules. The semantic version requirement can be passed as a full,
-/// concrete version number, because that's what we'll have in our Cargo.toml files (e.g. 0.3.2).
-/// The patch number in the requirement gets dropped and replaced with a wildcard (0.3.*) as all
-/// minor versions should be compatible with each other.
-pub fn is_minor_version_compatible(version: &str, req: &str) -> bool {
-    let expected_version = match Version::parse(version) {
-        Ok(v) => v,
-        Err(_) => return false,
-    };
-    let req_version = match Version::parse(req) {
-        Ok(v) => v,
-        Err(_) => return false,
-    };
-
-    expected_version.major == req_version.major && expected_version.minor == req_version.minor
-}
-
-pub fn parse_version(raw_version: &str) -> Result<Version, semver::Error> {
-    Version::parse(raw_version)
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn version_0_3_0_is_compatible_with_requirement_0_3_x() {
-        assert!(is_minor_version_compatible("0.3.0", "0.3.2"));
-    }
-
-    #[test]
-    fn version_0_3_1_is_compatible_with_minimum_requirement_0_3_x() {
-        assert!(is_minor_version_compatible("0.3.1", "0.3.2"));
-    }
-
-    #[test]
-    fn version_0_3_2_is_compatible_with_minimum_requirement_0_3_x() {
-        assert!(is_minor_version_compatible("0.3.2", "0.3.0"));
-    }
-
-    #[test]
-    fn version_0_2_0_is_not_compatible_with_requirement_0_3_x() {
-        assert!(!is_minor_version_compatible("0.2.0", "0.3.2"));
-    }
-
-    #[test]
-    fn version_0_4_0_is_not_compatible_with_requirement_0_3_x() {
-        assert!(!is_minor_version_compatible("0.4.0", "0.3.2"));
-    }
-
-    #[test]
-    fn version_1_3_2_is_not_compatible_with_requirement_0_3_x() {
-        assert!(!is_minor_version_compatible("1.3.2", "0.3.2"));
-    }
-
-    #[test]
-    fn version_0_4_0_rc_1_is_compatible_with_version_0_4_0_rc_1() {
-        assert!(is_minor_version_compatible("0.4.0-rc.1", "0.4.0-rc.1"));
-    }
-
-    #[test]
-    fn returns_false_on_foo_version() {
-        assert!(!is_minor_version_compatible("foo", "0.3.2"));
-    }
-
-    #[test]
-    fn returns_false_on_bar_version() {
-        assert!(!is_minor_version_compatible("0.3.2", "bar"));
-    }
-}
@@ -46,6 +46,7 @@ nym-sphinx = { path = "../nymsphinx" }
 nym-statistics-common = { path = "../statistics" }
 nym-pemstore = { path = "../pemstore" }
 nym-topology = { path = "../topology", features = ["serializable"] }
+nym-mixnet-client = { path = "../client-libs/mixnet-client", default-features = false }
 nym-validator-client = { path = "../client-libs/validator-client", default-features = false }
 nym-task = { path = "../task" }
 nym-credentials-interface = { path = "../credentials-interface" }
@@ -8,7 +8,10 @@ use crate::{
    },
 };
 use log::{debug, error};
-use sqlx::ConnectOptions;
+use sqlx::{
+    sqlite::{SqliteAutoVacuum, SqliteSynchronous},
+    ConnectOptions,
+};
 use std::path::Path;

 #[derive(Debug, Clone)]
@@ -30,6 +33,9 @@ impl StorageManager {
        }

        let opts = sqlx::sqlite::SqliteConnectOptions::new()
+            .journal_mode(sqlx::sqlite::SqliteJournalMode::Wal)
+            .synchronous(SqliteSynchronous::Normal)
+            .auto_vacuum(SqliteAutoVacuum::Incremental)
            .filename(database_path)
            .create_if_missing(true)
            .disable_statement_logging();
@@ -110,7 +116,7 @@ impl StorageManager {
    ) -> Result<(), sqlx::Error> {
        sqlx::query!(
            r#"
-                INSERT INTO registered_gateway(gateway_id_bs58, registration_timestamp, gateway_type) 
+                INSERT INTO registered_gateway(gateway_id_bs58, registration_timestamp, gateway_type)
                VALUES (?, ?, ?)
            "#,
            registered_gateway.gateway_id_bs58,
@@ -224,7 +230,7 @@ impl StorageManager {
    ) -> Result<(), sqlx::Error> {
        sqlx::query!(
            r#"
-                INSERT INTO custom_gateway_details(gateway_id_bs58, data) 
+                INSERT INTO custom_gateway_details(gateway_id_bs58, data)
                VALUES (?, ?)
            "#,
            custom.gateway_id_bs58,
@@ -115,8 +115,13 @@ where
        hardcoded_topology.get_gateways()
    } else {
        let mut rng = rand::thread_rng();
-        crate::init::helpers::current_gateways(&mut rng, &core.client.nym_api_urls, user_agent)
-            .await?
+        crate::init::helpers::current_gateways(
+            &mut rng,
+            &core.client.nym_api_urls,
+            user_agent,
+            core.debug.topology.minimum_gateway_performance,
+        )
+        .await?
    };

    // since we're registering with a brand new gateway,
@@ -170,8 +170,13 @@ where
        hardcoded_topology.get_gateways()
    } else {
        let mut rng = rand::thread_rng();
-        crate::init::helpers::current_gateways(&mut rng, &core.client.nym_api_urls, user_agent)
-            .await?
+        crate::init::helpers::current_gateways(
+            &mut rng,
+            &core.client.nym_api_urls,
+            user_agent,
+            core.debug.topology.minimum_gateway_performance,
+        )
+        .await?
    };

    let gateway_setup = GatewaySetup::New {
@@ -32,7 +32,7 @@ use crate::init::{
    setup_gateway,
    types::{GatewaySetup, InitialisationResult},
 };
-use crate::{config, spawn_future};
+use crate::{config, spawn_future, ForgetMe};
 use futures::channel::mpsc;
 use log::*;
 use nym_bandwidth_controller::BandwidthController;
@@ -188,6 +188,11 @@ pub struct BaseClientBuilder<'a, C, S: MixnetClientStorage> {
    user_agent: Option<UserAgent>,

    setup_method: GatewaySetup,
+
+    #[cfg(unix)]
+    connection_fd_callback: Option<Arc<dyn Fn(RawFd) + Send + Sync>>,
+
+    forget_me: ForgetMe,
 }

 impl<'a, C, S> BaseClientBuilder<'a, C, S>
@@ -210,9 +215,18 @@ where
            shutdown: None,
            user_agent: None,
            setup_method: GatewaySetup::MustLoad { gateway_id: None },
+            #[cfg(unix)]
+            connection_fd_callback: None,
+            forget_me: Default::default(),
        }
    }

+    #[must_use]
+    pub fn with_forget_me(mut self, forget_me: &ForgetMe) -> Self {
+        self.forget_me = forget_me.clone();
+        self
+    }
+
    #[must_use]
    pub fn with_gateway_setup(mut self, setup: GatewaySetup) -> Self {
        self.setup_method = setup;
@@ -261,6 +275,15 @@ where
        Ok(self)
    }

+    #[cfg(unix)]
+    pub fn with_connection_fd_callback(
+        mut self,
+        callback: Arc<dyn Fn(RawFd) + Send + Sync>,
+    ) -> Self {
+        self.connection_fd_callback = Some(callback);
+        self
+    }
+
    // note: do **NOT** make this method public as its only valid usage is from within `start_base`
    // because it relies on the crypto keys being already loaded
    fn mix_address(details: &InitialisationResult) -> Recipient {
@@ -352,6 +375,7 @@ where
        controller.start_with_shutdown(shutdown)
    }

+    #[allow(clippy::too_many_arguments)]
    async fn start_gateway_client(
        config: &Config,
        initialisation_result: InitialisationResult,
@@ -359,6 +383,7 @@ where
        details_store: &S::GatewaysDetailsStore,
        packet_router: PacketRouter,
        stats_reporter: ClientStatsSender,
+        #[cfg(unix)] connection_fd_callback: Option<Arc<dyn Fn(RawFd) + Send + Sync>>,
        shutdown: TaskClient,
    ) -> Result<GatewayClient<C, S::CredentialStore>, ClientCoreError>
    where
@@ -401,6 +426,8 @@ where
                    packet_router,
                    bandwidth_controller,
                    stats_reporter,
+                    #[cfg(unix)]
+                    connection_fd_callback,
                    shutdown,
                )
            };
@@ -462,6 +489,7 @@ where
        details_store: &S::GatewaysDetailsStore,
        packet_router: PacketRouter,
        stats_reporter: ClientStatsSender,
+        #[cfg(unix)] connection_fd_callback: Option<Arc<dyn Fn(RawFd) + Send + Sync>>,
        mut shutdown: TaskClient,
    ) -> Result<Box<dyn GatewayTransceiver + Send>, ClientCoreError>
    where
@@ -493,6 +521,8 @@ where
            details_store,
            packet_router,
            stats_reporter,
+            #[cfg(unix)]
+            connection_fd_callback,
            shutdown,
        )
        .await?;
@@ -514,15 +544,10 @@ where
                    min_gateway_performance: config_topology.minimum_gateway_performance,
                },
                nym_api_urls,
-                env!("CARGO_PKG_VERSION").to_string(),
                user_agent,
            )),
            config::TopologyStructure::GeoAware(group_by) => {
-                Box::new(GeoAwareTopologyProvider::new(
-                    nym_api_urls,
-                    env!("CARGO_PKG_VERSION").to_string(),
-                    group_by,
-                ))
+                Box::new(GeoAwareTopologyProvider::new(nym_api_urls, group_by))
            }
        })
    }
@@ -620,9 +645,11 @@ where
    fn start_mix_traffic_controller(
        gateway_transceiver: Box<dyn GatewayTransceiver + Send>,
        shutdown: TaskClient,
+        forget_me: ForgetMe,
    ) -> BatchMixMessageSender {
        info!("Starting mix traffic controller...");
-        let (mix_traffic_controller, mix_tx) = MixTrafficController::new(gateway_transceiver);
+        let (mix_traffic_controller, mix_tx) =
+            MixTrafficController::new(gateway_transceiver, forget_me);
        mix_traffic_controller.start_with_shutdown(shutdown);
        mix_tx
    }
@@ -777,6 +804,8 @@ where
            &details_store,
            gateway_packet_router,
            stats_reporter.clone(),
+            #[cfg(unix)]
+            self.connection_fd_callback,
            shutdown.fork("gateway_transceiver"),
        )
        .await?;
@@ -802,9 +831,11 @@ where
        // that are to be sent to the mixnet. They are used by cover traffic stream and real
        // traffic stream.
        // The MixTrafficController then sends the actual traffic
+
        let message_sender = Self::start_mix_traffic_controller(
            gateway_transceiver,
            shutdown.fork("mix_traffic_controller"),
+            self.forget_me,
        );

        // Channels that the websocket listener can use to signal downstream to the real traffic
@@ -2,8 +2,9 @@
 // SPDX-License-Identifier: Apache-2.0

 use crate::client::mix_traffic::transceiver::GatewayTransceiver;
-use crate::spawn_future;
+use crate::{spawn_future, ForgetMe};
 use log::*;
+use nym_gateway_requests::ClientRequest;
 use nym_sphinx::forwarding::packet::MixPacket;

 pub type BatchMixMessageSender = tokio::sync::mpsc::Sender<Vec<MixPacket>>;
@@ -26,10 +27,14 @@ pub struct MixTrafficController {
    // TODO: this is temporary work-around.
    // in long run `gateway_client` will be moved away from `MixTrafficController` anyway.
    consecutive_gateway_failure_count: usize,
+    forget_me: ForgetMe,
 }

 impl MixTrafficController {
-    pub fn new<T>(gateway_transceiver: T) -> (MixTrafficController, BatchMixMessageSender)
+    pub fn new<T>(
+        gateway_transceiver: T,
+        forget_me: ForgetMe,
+    ) -> (MixTrafficController, BatchMixMessageSender)
    where
        T: GatewayTransceiver + Send + 'static,
    {
@@ -40,6 +45,7 @@ impl MixTrafficController {
                gateway_transceiver: Box::new(gateway_transceiver),
                mix_rx: message_receiver,
                consecutive_gateway_failure_count: 0,
+                forget_me,
            },
            message_sender,
        )
@@ -47,6 +53,7 @@ impl MixTrafficController {

    pub fn new_dynamic(
        gateway_transceiver: Box<dyn GatewayTransceiver + Send>,
+        forget_me: ForgetMe,
    ) -> (MixTrafficController, BatchMixMessageSender) {
        let (message_sender, message_receiver) =
            tokio::sync::mpsc::channel(MIX_MESSAGE_RECEIVER_BUFFER_SIZE);
@@ -55,6 +62,7 @@ impl MixTrafficController {
                gateway_transceiver,
                mix_rx: message_receiver,
                consecutive_gateway_failure_count: 0,
+                forget_me,
            },
            message_sender,
        )
@@ -111,7 +119,27 @@ impl MixTrafficController {
                }
            }
            shutdown.recv_timeout().await;
+
+            if self.forget_me.any() {
+                log::info!("Sending forget me request to the gateway");
+                match self
+                    .gateway_transceiver
+                    .send_client_request(ClientRequest::ForgetMe {
+                        client: self.forget_me.client(),
+                        stats: self.forget_me.stats(),
+                    })
+                    .await
+                {
+                    Ok(_) => {
+                        log::info!("Successfully sent forget me request to the gateway");
+                    }
+                    Err(err) => {
+                        log::error!("Failed to send forget me request to the gateway: {err}");
+                    }
+                }
+            }
+
            log::debug!("MixTrafficController: Exiting");
-        })
+        });
    }
 }
@@ -5,8 +5,10 @@ use async_trait::async_trait;
 use log::{debug, error};
 use nym_credential_storage::storage::Storage as CredentialStorage;
 use nym_crypto::asymmetric::identity;
+use nym_gateway_client::error::GatewayClientError;
 use nym_gateway_client::GatewayClient;
 pub use nym_gateway_client::{GatewayPacketRouter, PacketRouter};
+use nym_gateway_requests::ClientRequest;
 use nym_sphinx::forwarding::packet::MixPacket;
 use nym_validator_client::nyxd::contract_traits::DkgQueryClient;
 use std::fmt::Debug;
@@ -14,7 +16,7 @@ use std::os::raw::c_int as RawFd;
 use thiserror::Error;

 #[cfg(not(target_arch = "wasm32"))]
-use futures::channel::{mpsc, oneshot};
+use futures::channel::oneshot;

 // we need to type erase the error type since we can't have dynamic associated types alongside dynamic dispatch
 #[derive(Debug, Error)]
@@ -26,9 +28,14 @@ fn erase_err<E: std::error::Error + Send + Sync + 'static>(err: E) -> ErasedGate
 }

 /// This combines combines the functionalities of being able to send and receive mix packets.
+#[async_trait]
 pub trait GatewayTransceiver: GatewaySender + GatewayReceiver {
    fn gateway_identity(&self) -> identity::PublicKey;
    fn ws_fd(&self) -> Option<RawFd>;
+    async fn send_client_request(
+        &mut self,
+        message: ClientRequest,
+    ) -> Result<(), GatewayClientError>;
 }

 /// This trait defines the functionality of sending `MixPacket` into the mixnet,
@@ -65,6 +72,7 @@ pub trait GatewayReceiver {
 }

 // to allow for dynamic dispatch
+#[async_trait]
 impl<G: GatewayTransceiver + ?Sized + Send> GatewayTransceiver for Box<G> {
    #[inline]
    fn gateway_identity(&self) -> identity::PublicKey {
@@ -73,6 +81,13 @@ impl<G: GatewayTransceiver + ?Sized + Send> GatewayTransceiver for Box<G> {
    fn ws_fd(&self) -> Option<RawFd> {
        (**self).ws_fd()
    }
+
+    async fn send_client_request(
+        &mut self,
+        message: ClientRequest,
+    ) -> Result<(), GatewayClientError> {
+        (**self).send_client_request(message).await
+    }
 }

 #[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
@@ -91,7 +106,6 @@ impl<G: GatewaySender + ?Sized + Send> GatewaySender for Box<G> {
        (**self).batch_send_mix_packets(packets).await
    }
 }
-
 impl<G: GatewayReceiver + ?Sized> GatewayReceiver for Box<G> {
    #[inline]
    fn set_packet_router(&mut self, packet_router: PacketRouter) -> Result<(), ErasedGatewayError> {
@@ -111,6 +125,7 @@ impl<C, St> RemoteGateway<C, St> {
    }
 }

+#[async_trait]
 impl<C, St> GatewayTransceiver for RemoteGateway<C, St>
 where
    C: DkgQueryClient + Send + Sync,
@@ -123,6 +138,20 @@ where
    fn ws_fd(&self) -> Option<RawFd> {
        self.gateway_client.ws_fd()
    }
+
+    async fn send_client_request(
+        &mut self,
+        message: ClientRequest,
+    ) -> Result<(), GatewayClientError> {
+        if let Some(shared_key) = self.gateway_client.shared_key() {
+            self.gateway_client
+                .send_websocket_message(message.encrypt(&*shared_key)?)
+                .await?;
+            Ok(())
+        } else {
+            Err(GatewayClientError::ConnectionInInvalidState)
+        }
+    }
 }

 #[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
@@ -170,7 +199,7 @@ pub struct LocalGateway {

    // 'sender' part
    /// Channel responsible for taking mix packets and forwarding them further into the further mixnet layers.
-    packet_forwarder: mpsc::UnboundedSender<MixPacket>,
+    packet_forwarder: nym_mixnet_client::forwarder::MixForwardingSender,

    // 'receiver' part
    packet_router_tx: Option<oneshot::Sender<PacketRouter>>,
@@ -180,7 +209,7 @@ pub struct LocalGateway {
 impl LocalGateway {
    pub fn new(
        local_identity: identity::PublicKey,
-        packet_forwarder: mpsc::UnboundedSender<MixPacket>,
+        packet_forwarder: nym_mixnet_client::forwarder::MixForwardingSender,
        packet_router_tx: oneshot::Sender<PacketRouter>,
    ) -> Self {
        LocalGateway {
@@ -195,6 +224,7 @@ impl LocalGateway {
 mod nonwasm_sealed {
    use super::*;

+    #[async_trait]
    impl GatewayTransceiver for LocalGateway {
        fn gateway_identity(&self) -> identity::PublicKey {
            self.local_identity
@@ -202,14 +232,20 @@ mod nonwasm_sealed {
        fn ws_fd(&self) -> Option<RawFd> {
            None
        }
+
+        async fn send_client_request(
+            &mut self,
+            _message: ClientRequest,
+        ) -> Result<(), GatewayClientError> {
+            Ok(())
+        }
    }

    #[async_trait]
    impl GatewaySender for LocalGateway {
        async fn send_mix_packet(&mut self, packet: MixPacket) -> Result<(), ErasedGatewayError> {
            self.packet_forwarder
-                .unbounded_send(packet)
-                .map_err(|err| err.into_send_error())
+                .forward_packet(packet)
                .map_err(erase_err)
        }
    }
@@ -270,6 +306,7 @@ impl GatewaySender for MockGateway {
    }
 }

+#[async_trait]
 impl GatewayTransceiver for MockGateway {
    fn gateway_identity(&self) -> identity::PublicKey {
        self.dummy_identity
@@ -277,4 +314,11 @@ impl GatewayTransceiver for MockGateway {
    fn ws_fd(&self) -> Option<RawFd> {
        None
    }
+
+    async fn send_client_request(
+        &mut self,
+        _message: ClientRequest,
+    ) -> Result<(), GatewayClientError> {
+        Ok(())
+    }
 }
@@ -85,15 +85,10 @@ fn check_layer_integrity(topology: NymTopology) -> Result<(), ()> {
 pub struct GeoAwareTopologyProvider {
    validator_client: nym_validator_client::client::NymApiClient,
    filter_on: GroupBy,
-    client_version: String,
 }

 impl GeoAwareTopologyProvider {
-    pub fn new(
-        mut nym_api_urls: Vec<Url>,
-        client_version: String,
-        filter_on: GroupBy,
-    ) -> GeoAwareTopologyProvider {
+    pub fn new(mut nym_api_urls: Vec<Url>, filter_on: GroupBy) -> GeoAwareTopologyProvider {
        log::info!(
            "Creating geo-aware topology provider with filter on {}",
            filter_on
@@ -105,14 +100,13 @@ impl GeoAwareTopologyProvider {
                nym_api_urls[0].clone(),
            ),
            filter_on,
-            client_version,
        }
    }

    async fn get_topology(&self) -> Option<NymTopology> {
        let mixnodes = match self
            .validator_client
-            .get_all_basic_active_mixing_assigned_nodes(Some(self.client_version.clone()))
+            .get_all_basic_active_mixing_assigned_nodes()
            .await
        {
            Err(err) => {
@@ -124,7 +118,7 @@ impl GeoAwareTopologyProvider {

        let gateways = match self
            .validator_client
-            .get_all_basic_entry_assigned_nodes(Some(self.client_version.clone()))
+            .get_all_basic_entry_assigned_nodes()
            .await
        {
            Err(err) => {
@@ -35,18 +35,11 @@ pub struct NymApiTopologyProvider {

    validator_client: nym_validator_client::client::NymApiClient,
    nym_api_urls: Vec<Url>,
-
-    client_version: String,
    currently_used_api: usize,
 }

 impl NymApiTopologyProvider {
-    pub fn new(
-        config: Config,
-        mut nym_api_urls: Vec<Url>,
-        client_version: String,
-        user_agent: Option<UserAgent>,
-    ) -> Self {
+    pub fn new(config: Config, mut nym_api_urls: Vec<Url>, user_agent: Option<UserAgent>) -> Self {
        nym_api_urls.shuffle(&mut thread_rng());

        let validator_client = if let Some(user_agent) = user_agent {
@@ -62,7 +55,6 @@ impl NymApiTopologyProvider {
            config,
            validator_client,
            nym_api_urls,
-            client_version,
            currently_used_api: 0,
        }
    }
@@ -99,7 +91,7 @@ impl NymApiTopologyProvider {
    async fn get_current_compatible_topology(&mut self) -> Option<NymTopology> {
        let mixnodes = match self
            .validator_client
-            .get_all_basic_active_mixing_assigned_nodes(Some(self.client_version.clone()))
+            .get_all_basic_active_mixing_assigned_nodes()
            .await
        {
            Err(err) => {
@@ -111,7 +103,7 @@ impl NymApiTopologyProvider {

        let gateways = match self
            .validator_client
-            .get_all_basic_entry_assigned_nodes(Some(self.client_version.clone()))
+            .get_all_basic_entry_assigned_nodes()
            .await
        {
            Err(err) => {
@@ -7,7 +7,7 @@ use futures::{SinkExt, StreamExt};
 use log::{debug, info, trace, warn};
 use nym_crypto::asymmetric::identity;
 use nym_gateway_client::GatewayClient;
-use nym_topology::{gateway, mix};
+use nym_topology::gateway;
 use nym_validator_client::client::IdentityKeyRef;
 use nym_validator_client::UserAgent;
 use rand::{seq::SliceRandom, Rng};
@@ -82,6 +82,7 @@ pub async fn current_gateways<R: Rng>(
    rng: &mut R,
    nym_apis: &[Url],
    user_agent: Option<UserAgent>,
+    minimum_performance: u8,
 ) -> Result<Vec<gateway::LegacyNode>, ClientCoreError> {
    let nym_api = nym_apis
        .choose(rng)
@@ -94,44 +95,27 @@ pub async fn current_gateways<R: Rng>(

    log::debug!("Fetching list of gateways from: {nym_api}");

-    let gateways = client.get_all_basic_entry_assigned_nodes(None).await?;
-    log::debug!("Found {} gateways", gateways.len());
+    let gateways = client.get_all_basic_entry_assigned_nodes().await?;
+    info!("nym api reports {} gateways", gateways.len());
+
    log::trace!("Gateways: {:#?}", gateways);

    let valid_gateways = gateways
        .iter()
+        .filter(|g| g.performance.round_to_integer() >= minimum_performance)
        .filter_map(|gateway| gateway.try_into().ok())
        .collect::<Vec<gateway::LegacyNode>>();
    log::debug!("After checking validity: {}", valid_gateways.len());
    log::trace!("Valid gateways: {:#?}", valid_gateways);

-    log::info!("nym-api reports {} valid gateways", valid_gateways.len());
+    log::info!(
+        "and {} after validity and performance filtering",
+        valid_gateways.len()
+    );

    Ok(valid_gateways)
 }

-pub async fn current_mixnodes<R: Rng>(
-    rng: &mut R,
-    nym_apis: &[Url],
-) -> Result<Vec<mix::LegacyNode>, ClientCoreError> {
-    let nym_api = nym_apis
-        .choose(rng)
-        .ok_or(ClientCoreError::ListOfNymApisIsEmpty)?;
-    let client = nym_validator_client::client::NymApiClient::new(nym_api.clone());
-
-    log::trace!("Fetching list of mixnodes from: {nym_api}");
-
-    let mixnodes = client
-        .get_all_basic_active_mixing_assigned_nodes(None)
-        .await?;
-    let valid_mixnodes = mixnodes
-        .iter()
-        .filter_map(|mixnode| mixnode.try_into().ok())
-        .collect::<Vec<mix::LegacyNode>>();
-
-    Ok(valid_mixnodes)
-}
-
 #[cfg(not(target_arch = "wasm32"))]
 async fn connect(endpoint: &str) -> Result<WsConn, ClientCoreError> {
    match tokio::time::timeout(CONN_TIMEOUT, connect_async(endpoint)).await {
@@ -206,7 +190,7 @@ where
    Ok(GatewayWithLatency::new(gateway, avg))
 }

-pub async fn choose_gateway_by_latency<'a, R: Rng, G: ConnectableGateway + Clone>(
+pub async fn choose_gateway_by_latency<R: Rng, G: ConnectableGateway + Clone>(
    rng: &mut R,
    gateways: &[G],
    must_use_tls: bool,
@@ -34,3 +34,48 @@ where
 {
    tokio::spawn(future);
 }
+
+#[derive(Clone, Default, Debug)]
+pub struct ForgetMe {
+    client: bool,
+    stats: bool,
+}
+
+impl ForgetMe {
+    pub fn new_all() -> Self {
+        Self {
+            client: true,
+            stats: true,
+        }
+    }
+
+    pub fn new_client() -> Self {
+        Self {
+            client: true,
+            stats: false,
+        }
+    }
+
+    pub fn new_stats() -> Self {
+        Self {
+            client: false,
+            stats: true,
+        }
+    }
+
+    pub fn new(client: bool, stats: bool) -> Self {
+        Self { client, stats }
+    }
+
+    pub fn any(&self) -> bool {
+        self.client || self.stats
+    }
+
+    pub fn client(&self) -> bool {
+        self.client
+    }
+
+    pub fn stats(&self) -> bool {
+        self.stats
+    }
+}
@@ -9,7 +9,10 @@ use crate::backend::fs_backend::{
    },
 };
 use log::{error, info};
-use sqlx::ConnectOptions;
+use sqlx::{
+    sqlite::{SqliteAutoVacuum, SqliteSynchronous},
+    ConnectOptions,
+};
 use std::path::Path;

 #[derive(Debug, Clone)]
@@ -31,6 +34,9 @@ impl StorageManager {
        }

        let opts = sqlx::sqlite::SqliteConnectOptions::new()
+            .journal_mode(sqlx::sqlite::SqliteJournalMode::Wal)
+            .synchronous(SqliteSynchronous::Normal)
+            .auto_vacuum(SqliteAutoVacuum::Incremental)
            .filename(database_path)
            .create_if_missing(fresh)
            .disable_statement_logging();
@@ -87,8 +87,10 @@ impl ClientBandwidth {

        if remaining < 0 {
            tracing::warn!("OUT OF BANDWIDTH. remaining: {remaining_bi2}");
-        } else {
+        } else if remaining < 1_000_000 {
            tracing::info!("remaining bandwidth: {remaining_bi2}");
+        } else {
+            tracing::debug!("remaining bandwidth: {remaining_bi2}");
        }

        self.inner
@@ -101,6 +101,10 @@ pub struct GatewayClient<C, St = EphemeralCredentialStorage> {
    // currently unused (but populated)
    negotiated_protocol: Option<u8>,

+    // Callback on the fd as soon as the connection has been established
+    #[cfg(unix)]
+    connection_fd_callback: Option<Arc<dyn Fn(RawFd) + Send + Sync>>,
+
    /// Listen to shutdown messages and send notifications back to the task manager
    task_client: TaskClient,
 }
@@ -116,6 +120,7 @@ impl<C, St> GatewayClient<C, St> {
        packet_router: PacketRouter,
        bandwidth_controller: Option<BandwidthController<C, St>>,
        stats_reporter: ClientStatsSender,
+        #[cfg(unix)] connection_fd_callback: Option<Arc<dyn Fn(RawFd) + Send + Sync>>,
        task_client: TaskClient,
    ) -> Self {
        GatewayClient {
@@ -131,6 +136,8 @@ impl<C, St> GatewayClient<C, St> {
            bandwidth_controller,
            stats_reporter,
            negotiated_protocol: None,
+            #[cfg(unix)]
+            connection_fd_callback,
            task_client,
        }
    }
@@ -139,6 +146,10 @@ impl<C, St> GatewayClient<C, St> {
        self.gateway_identity
    }

+    pub fn shared_key(&self) -> Option<Arc<SharedGatewayKey>> {
+        self.shared_key.clone()
+    }
+
    pub fn ws_fd(&self) -> Option<RawFd> {
        match &self.connection {
            SocketState::Available(conn) => ws_fd(conn.as_ref()),
@@ -201,6 +212,12 @@ impl<C, St> GatewayClient<C, St> {
        };

        self.connection = SocketState::Available(Box::new(ws_stream));
+
+        #[cfg(unix)]
+        if let (Some(callback), Some(fd)) = (self.connection_fd_callback.as_ref(), self.ws_fd()) {
+            callback.as_ref()(fd);
+        }
+
        Ok(())
    }

@@ -307,7 +324,7 @@ impl<C, St> GatewayClient<C, St> {

    // If we want to send a message (with response), we need to have a full control over the socket,
    // as we need to be able to write the request and read the subsequent response
-    async fn send_websocket_message(
+    pub async fn send_websocket_message(
        &mut self,
        msg: impl Into<Message>,
    ) -> Result<ServerResponse, GatewayClientError> {
@@ -408,7 +425,7 @@ impl<C, St> GatewayClient<C, St> {
            }

            Some(_) => {
-                info!("the gateway is using exactly the same (or older) protocol version as we are. We're good to continue!");
+                debug!("the gateway is using exactly the same (or older) protocol version as we are. We're good to continue!");
                Ok(())
            }
        }
@@ -992,24 +1009,6 @@ impl<C, St> GatewayClient<C, St> {
        }
        Ok(())
    }
-
-    #[deprecated(note = "this method does not deal with upgraded keys for legacy clients")]
-    pub async fn authenticate_and_start(
-        &mut self,
-    ) -> Result<AuthenticationResponse, GatewayClientError>
-    where
-        C: DkgQueryClient + Send + Sync,
-        St: CredentialStorage,
-        <St as CredentialStorage>::StorageError: Send + Sync + 'static,
-    {
-        let shared_key = self.perform_initial_authentication().await?;
-        self.claim_initial_bandwidth().await?;
-
-        // this call is NON-blocking
-        self.start_listening_for_mixnet_messages()?;
-
-        Ok(shared_key)
-    }
 }

 // type alias for an ease of use
@@ -1048,6 +1047,8 @@ impl GatewayClient<InitOnly, EphemeralCredentialStorage> {
            bandwidth_controller: None,
            stats_reporter: ClientStatsSender::new(None),
            negotiated_protocol: None,
+            #[cfg(unix)]
+            connection_fd_callback: None,
            task_client,
        }
    }
@@ -1078,6 +1079,8 @@ impl GatewayClient<InitOnly, EphemeralCredentialStorage> {
            bandwidth_controller,
            stats_reporter,
            negotiated_protocol: self.negotiated_protocol,
+            #[cfg(unix)]
+            connection_fd_callback: self.connection_fd_callback,
            task_client,
        }
    }
@@ -46,7 +46,8 @@ pub(crate) fn ws_fd(_conn: &WsConn) -> Option<RawFd> {
    #[cfg(unix)]
    match _conn.get_ref() {
        MaybeTlsStream::Plain(stream) => Some(stream.as_raw_fd()),
-        &_ => None,
+        MaybeTlsStream::Rustls(tls_stream) => Some(tls_stream.as_raw_fd()),
+        _ => None,
    }
    #[cfg(not(unix))]
    None
@@ -110,6 +111,11 @@ impl PartiallyDelegatedRouter {
            }
        };

+        if self.stream_return.is_canceled() {
+            // nothing to do, receiver has been dropped
+            return;
+        }
+
        let return_res = match ret {
            Err(err) => self.stream_return.send(Err(err)),
            Ok(_) => {
@@ -8,11 +8,17 @@ license.workspace = true
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

 [dependencies]
+dashmap = { workspace = true }
 futures = { workspace = true }
-log = { workspace = true }
-tokio = { workspace = true, features = ["time", "net", "rt"] }
-tokio-util = { workspace = true, features = ["codec"] }
+tracing = { workspace = true }
+tokio = { workspace = true, features = ["time", "sync"] }
+tokio-util = { workspace = true, features = ["codec"], optional = true }
+tokio-stream = { workspace = true }

 # internal
 nym-sphinx = { path = "../../nymsphinx" }
-nym-task = { path = "../../task" }
+nym-task = { path = "../../task", optional = true }
+
+[features]
+default = ["client"]
+client = ["tokio-util", "nym-task", "tokio/net", "tokio/rt"]
@@ -1,30 +1,33 @@
-// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
+// Copyright 2021-2024 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use futures::channel::mpsc;
+use dashmap::DashMap;
 use futures::StreamExt;
-use log::*;
 use nym_sphinx::addressing::nodes::NymNodeRoutingAddress;
 use nym_sphinx::framing::codec::NymCodec;
 use nym_sphinx::framing::packet::FramedNymPacket;
 use nym_sphinx::params::PacketType;
 use nym_sphinx::NymPacket;
-use std::collections::HashMap;
 use std::io;
 use std::net::SocketAddr;
-use std::sync::atomic::{AtomicU32, Ordering};
+use std::ops::Deref;
+use std::sync::atomic::{AtomicU32, AtomicUsize, Ordering};
 use std::sync::Arc;
 use std::time::Duration;
 use tokio::net::TcpStream;
+use tokio::sync::mpsc;
+use tokio::sync::mpsc::error::TrySendError;
 use tokio::time::sleep;
+use tokio_stream::wrappers::ReceiverStream;
 use tokio_util::codec::Framed;
+use tracing::*;

+#[derive(Clone, Copy)]
 pub struct Config {
    initial_reconnection_backoff: Duration,
    maximum_reconnection_backoff: Duration,
    initial_connection_timeout: Duration,
    maximum_connection_buffer_size: usize,
-    use_legacy_version: bool,
 }

 impl Config {
@@ -33,14 +36,12 @@ impl Config {
        maximum_reconnection_backoff: Duration,
        initial_connection_timeout: Duration,
        maximum_connection_buffer_size: usize,
-        use_legacy_version: bool,
    ) -> Self {
        Config {
            initial_reconnection_backoff,
            maximum_reconnection_backoff,
            initial_connection_timeout,
            maximum_connection_buffer_size,
-            use_legacy_version,
        }
    }
 }
@@ -57,11 +58,37 @@ pub trait SendWithoutResponse {
 }

 pub struct Client {
-    conn_new: HashMap<NymNodeRoutingAddress, ConnectionSender>,
+    active_connections: ActiveConnections,
+    connections_count: Arc<AtomicUsize>,
    config: Config,
 }

-struct ConnectionSender {
+#[derive(Default, Clone)]
+pub struct ActiveConnections {
+    inner: Arc<DashMap<NymNodeRoutingAddress, ConnectionSender>>,
+}
+
+impl ActiveConnections {
+    pub fn pending_packets(&self) -> usize {
+        self.inner
+            .iter()
+            .map(|sender| {
+                let max_capacity = sender.channel.max_capacity();
+                let capacity = sender.channel.capacity();
+                max_capacity - capacity
+            })
+            .sum()
+    }
+}
+
+impl Deref for ActiveConnections {
+    type Target = DashMap<NymNodeRoutingAddress, ConnectionSender>;
+    fn deref(&self) -> &Self::Target {
+        &self.inner
+    }
+}
+
+pub struct ConnectionSender {
    channel: mpsc::Sender<FramedNymPacket>,
    current_reconnection_attempt: Arc<AtomicU32>,
 }
@@ -75,46 +102,53 @@ impl ConnectionSender {
    }
 }

-impl Client {
-    pub fn new(config: Config) -> Client {
-        Client {
-            conn_new: HashMap::new(),
-            config,
+struct ManagedConnection {
+    address: SocketAddr,
+    message_receiver: ReceiverStream<FramedNymPacket>,
+    connection_timeout: Duration,
+    current_reconnection: Arc<AtomicU32>,
+}
+
+impl ManagedConnection {
+    fn new(
+        address: SocketAddr,
+        message_receiver: mpsc::Receiver<FramedNymPacket>,
+        connection_timeout: Duration,
+        current_reconnection: Arc<AtomicU32>,
+    ) -> Self {
+        ManagedConnection {
+            address,
+            message_receiver: ReceiverStream::new(message_receiver),
+            connection_timeout,
+            current_reconnection,
        }
    }

-    async fn manage_connection(
-        address: SocketAddr,
-        receiver: mpsc::Receiver<FramedNymPacket>,
-        connection_timeout: Duration,
-        current_reconnection: &AtomicU32,
-    ) {
+    async fn run(self) {
+        let address = self.address;
        let connection_fut = TcpStream::connect(address);

-        let conn = match tokio::time::timeout(connection_timeout, connection_fut).await {
+        let conn = match tokio::time::timeout(self.connection_timeout, connection_fut).await {
            Ok(stream_res) => match stream_res {
                Ok(stream) => {
-                    debug!("Managed to establish connection to {}", address);
+                    debug!("Managed to establish connection to {}", self.address);
                    // if we managed to connect, reset the reconnection count (whatever it might have been)
-                    current_reconnection.store(0, Ordering::Release);
+                    self.current_reconnection.store(0, Ordering::Release);
                    Framed::new(stream, NymCodec)
                }
                Err(err) => {
-                    debug!(
-                        "failed to establish connection to {} (err: {})",
-                        address, err
-                    );
+                    debug!("failed to establish connection to {address} (err: {err})",);
                    return;
                }
            },
            Err(_) => {
                debug!(
-                    "failed to connect to {} within {:?}",
-                    address, connection_timeout
+                    "failed to connect to {address} within {:?}",
+                    self.connection_timeout
                );

                // we failed to connect - increase reconnection attempt
-                current_reconnection.fetch_add(1, Ordering::SeqCst);
+                self.current_reconnection.fetch_add(1, Ordering::SeqCst);
                return;
            }
        };
@@ -122,15 +156,28 @@ impl Client {
        // Take whatever the receiver channel produces and put it on the connection.
        // We could have as well used conn.send_all(receiver.map(Ok)), but considering we don't care
        // about neither receiver nor the connection, it doesn't matter which one gets consumed
-        if let Err(err) = receiver.map(Ok).forward(conn).await {
-            warn!("Failed to forward packets to {} - {err}", address);
+        if let Err(err) = self.message_receiver.map(Ok).forward(conn).await {
+            warn!("Failed to forward packets to {address}: {err}");
        }

        debug!(
-            "connection manager to {} is finished. Either the connection failed or mixnet client got dropped",
-            address
+            "connection manager to {address} is finished. Either the connection failed or mixnet client got dropped",
        );
    }
+}
+
+impl Client {
+    pub fn new(config: Config, connections_count: Arc<AtomicUsize>) -> Client {
+        Client {
+            active_connections: Default::default(),
+            connections_count,
+            config,
+        }
+    }
+
+    pub fn active_connections(&self) -> ActiveConnections {
+        self.active_connections.clone()
+    }

    /// If we're trying to reconnect, determine how long we should wait.
    fn determine_backoff(&self, current_attempt: u32) -> Option<Duration> {
@@ -150,7 +197,7 @@ impl Client {
    }

    fn make_connection(&mut self, address: NymNodeRoutingAddress, pending_packet: FramedNymPacket) {
-        let (mut sender, receiver) = mpsc::channel(self.config.maximum_connection_buffer_size);
+        let (sender, receiver) = mpsc::channel(self.config.maximum_connection_buffer_size);

        // this CAN'T fail because we just created the channel which has a non-zero capacity
        if self.config.maximum_connection_buffer_size > 0 {
@@ -158,15 +205,16 @@ impl Client {
        }

        // if we already tried to connect to `address` before, grab the current attempt count
-        let current_reconnection_attempt = if let Some(existing) = self.conn_new.get_mut(&address) {
-            existing.channel = sender;
-            Arc::clone(&existing.current_reconnection_attempt)
-        } else {
-            let new_entry = ConnectionSender::new(sender);
-            let current_attempt = Arc::clone(&new_entry.current_reconnection_attempt);
-            self.conn_new.insert(address, new_entry);
-            current_attempt
-        };
+        let current_reconnection_attempt =
+            if let Some(mut existing) = self.active_connections.get_mut(&address) {
+                existing.channel = sender;
+                Arc::clone(&existing.current_reconnection_attempt)
+            } else {
+                let new_entry = ConnectionSender::new(sender);
+                let current_attempt = Arc::clone(&new_entry.current_reconnection_attempt);
+                self.active_connections.insert(address, new_entry);
+                current_attempt
+            };

        // load the actual value.
        let reconnection_attempt = current_reconnection_attempt.load(Ordering::Acquire);
@@ -175,6 +223,7 @@ impl Client {
        // copy the value before moving into another task
        let initial_connection_timeout = self.config.initial_connection_timeout;

+        let connections_count = self.connections_count.clone();
        tokio::spawn(async move {
            // before executing the manager, wait for what was specified, if anything
            if let Some(backoff) = backoff {
@@ -182,13 +231,16 @@ impl Client {
                sleep(backoff).await;
            }

-            Self::manage_connection(
+            connections_count.fetch_add(1, Ordering::SeqCst);
+            ManagedConnection::new(
                address.into(),
                receiver,
                initial_connection_timeout,
-                &current_reconnection_attempt,
+                current_reconnection_attempt,
            )
-            .await
+            .run()
+            .await;
+            connections_count.fetch_sub(1, Ordering::SeqCst);
        });
    }
 }
@@ -200,53 +252,50 @@ impl SendWithoutResponse for Client {
        packet: NymPacket,
        packet_type: PacketType,
    ) -> io::Result<()> {
-        trace!("Sending packet to {:?}", address);
-        let framed_packet =
-            FramedNymPacket::new(packet, packet_type, self.config.use_legacy_version);
+        trace!("Sending packet to {address:?}");
+        let framed_packet = FramedNymPacket::new(packet, packet_type);

-        if let Some(sender) = self.conn_new.get_mut(&address) {
-            if let Err(err) = sender.channel.try_send(framed_packet) {
-                if err.is_full() {
-                    debug!("Connection to {} seems to not be able to handle all the traffic - dropping the current packet", address);
-                    // it's not a 'big' error, but we did not manage to send the packet
-                    // if the queue is full, we can't really do anything but to drop the packet
-                    Err(io::Error::new(
-                        io::ErrorKind::WouldBlock,
-                        "connection queue is full",
-                    ))
-                } else if err.is_disconnected() {
-                    debug!(
-                        "Connection to {} seems to be dead. attempting to re-establish it...",
-                        address
-                    );
-                    // it's not a 'big' error, but we did not manage to send the packet, but queue
-                    // it up to send it as soon as the connection is re-established
-                    self.make_connection(address, err.into_inner());
-                    Err(io::Error::new(
-                        io::ErrorKind::ConnectionAborted,
-                        "reconnection attempt is in progress",
-                    ))
-                } else {
-                    // this can't really happen, but let's safe-guard against it in case something changes in futures library
-                    Err(io::Error::new(
-                        io::ErrorKind::Other,
-                        "unknown connection buffer error",
-                    ))
-                }
-            } else {
-                Ok(())
-            }
-        } else {
+        let Some(sender) = self.active_connections.get_mut(&address) else {
            // there was never a connection to begin with
            debug!("establishing initial connection to {}", address);
            // it's not a 'big' error, but we did not manage to send the packet, but queue the packet
            // for sending for as soon as the connection is created
            self.make_connection(address, framed_packet);
-            Err(io::Error::new(
+            return Err(io::Error::new(
                io::ErrorKind::NotConnected,
                "connection is in progress",
-            ))
-        }
+            ));
+        };
+
+        let sending_res = sender.channel.try_send(framed_packet);
+        drop(sender);
+
+        sending_res.map_err(|err| {
+            match err {
+                TrySendError::Full(_) => {
+                    debug!("Connection to {address} seems to not be able to handle all the traffic - dropping the current packet");
+                    // it's not a 'big' error, but we did not manage to send the packet
+                    // if the queue is full, we can't really do anything but to drop the packet
+                    io::Error::new(
+                        io::ErrorKind::WouldBlock,
+                        "connection queue is full",
+                    )
+                }
+                TrySendError::Closed(dropped) => {
+                    debug!(
+                        "Connection to {address} seems to be dead. attempting to re-establish it...",
+                    );
+
+                    // it's not a 'big' error, but we did not manage to send the packet, but queue
+                    // it up to send it as soon as the connection is re-established
+                    self.make_connection(address, dropped);
+                    io::Error::new(
+                        io::ErrorKind::ConnectionAborted,
+                        "reconnection attempt is in progress",
+                    )
+                }
+            }
+        } )
    }
 }

@@ -255,13 +304,15 @@ mod tests {
    use super::*;

    fn dummy_client() -> Client {
-        Client::new(Config {
-            initial_reconnection_backoff: Duration::from_millis(10_000),
-            maximum_reconnection_backoff: Duration::from_millis(300_000),
-            initial_connection_timeout: Duration::from_millis(1_500),
-            maximum_connection_buffer_size: 128,
-            use_legacy_version: false,
-        })
+        Client::new(
+            Config {
+                initial_reconnection_backoff: Duration::from_millis(10_000),
+                maximum_reconnection_backoff: Duration::from_millis(300_000),
+                initial_connection_timeout: Duration::from_millis(1_500),
+                maximum_connection_buffer_size: 128,
+            },
+            Default::default(),
+        )
    }

    #[test]
@@ -1,77 +1,72 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

-use crate::client::{Client, Config, SendWithoutResponse};
 use futures::channel::mpsc;
-use futures::StreamExt;
-use log::*;
+use futures::channel::mpsc::SendError;
 use nym_sphinx::forwarding::packet::MixPacket;
-use std::time::Duration;
+use tokio::time::Instant;

-pub type MixForwardingSender = mpsc::UnboundedSender<MixPacket>;
-type MixForwardingReceiver = mpsc::UnboundedReceiver<MixPacket>;
-
-/// A specialisation of client such that it forwards any received packets on the channel into the
-/// mix network immediately, i.e. will not try to listen for any responses.
-pub struct PacketForwarder {
-    mixnet_client: Client,
-    packet_receiver: MixForwardingReceiver,
-    shutdown: nym_task::TaskClient,
+pub fn mix_forwarding_channels() -> (MixForwardingSender, MixForwardingReceiver) {
+    let (tx, rx) = mpsc::unbounded();
+    (tx.into(), rx)
 }

-impl PacketForwarder {
-    pub fn new(
-        initial_reconnection_backoff: Duration,
-        maximum_reconnection_backoff: Duration,
-        initial_connection_timeout: Duration,
-        maximum_connection_buffer_size: usize,
-        use_legacy_version: bool,
-        shutdown: nym_task::TaskClient,
-    ) -> (PacketForwarder, MixForwardingSender) {
-        let client_config = Config::new(
-            initial_reconnection_backoff,
-            maximum_reconnection_backoff,
-            initial_connection_timeout,
-            maximum_connection_buffer_size,
-            use_legacy_version,
-        );
+#[derive(Clone)]
+pub struct MixForwardingSender(mpsc::UnboundedSender<PacketToForward>);

-        let (packet_sender, packet_receiver) = mpsc::unbounded();
+impl From<mpsc::UnboundedSender<PacketToForward>> for MixForwardingSender {
+    fn from(tx: mpsc::UnboundedSender<PacketToForward>) -> Self {
+        MixForwardingSender(tx)
+    }
+}

-        (
-            PacketForwarder {
-                mixnet_client: Client::new(client_config),
-                packet_receiver,
-                shutdown,
-            },
-            packet_sender,
-        )
+impl MixForwardingSender {
+    pub fn forward_packet(&self, packet: impl Into<PacketToForward>) -> Result<(), SendError> {
+        self.0
+            .unbounded_send(packet.into())
+            .map_err(|err| err.into_send_error())
    }

-    pub async fn run(&mut self) {
-        while !self.shutdown.is_shutdown() {
-            tokio::select! {
-                biased;
-                _ = self.shutdown.recv() => {
-                    log::trace!("PacketForwarder: Received shutdown");
-                }
-                Some(mix_packet) = self.packet_receiver.next() => {
-                     trace!("Going to forward packet to {}", mix_packet.next_hop());
+    #[allow(clippy::len_without_is_empty)]
+    pub fn len(&self) -> usize {
+        self.0.len()
+    }
+}

-                    let next_hop = mix_packet.next_hop();
-                    let packet_type = mix_packet.packet_type();
-                    let packet = mix_packet.into_packet();
-                    // we don't care about responses, we just want to fire packets
-                    // as quickly as possible
+pub type MixForwardingReceiver = mpsc::UnboundedReceiver<PacketToForward>;

-                    if let Err(err) =
-                        self.mixnet_client
-                            .send_without_response(next_hop, packet, packet_type)
-                    {
-                        debug!("failed to forward the packet - {err}")
-                    }
-                }
-            }
+pub struct PacketToForward {
+    pub packet: MixPacket,
+    pub forward_delay_target: Option<Instant>,
+}
+
+impl From<MixPacket> for PacketToForward {
+    fn from(packet: MixPacket) -> Self {
+        PacketToForward::new_no_delay(packet)
+    }
+}
+
+impl From<(MixPacket, Option<Instant>)> for PacketToForward {
+    fn from((packet, delay_until): (MixPacket, Option<Instant>)) -> Self {
+        PacketToForward::new(packet, delay_until)
+    }
+}
+
+impl From<(MixPacket, Instant)> for PacketToForward {
+    fn from((packet, delay_until): (MixPacket, Instant)) -> Self {
+        PacketToForward::new(packet, Some(delay_until))
+    }
+}
+
+impl PacketToForward {
+    pub fn new(packet: MixPacket, forward_delay_target: Option<Instant>) -> Self {
+        PacketToForward {
+            packet,
+            forward_delay_target,
        }
    }
+
+    pub fn new_no_delay(packet: MixPacket) -> Self {
+        Self::new(packet, None)
+    }
 }
@@ -1,7 +1,9 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+#[cfg(feature = "client")]
 pub mod client;
 pub mod forwarder;

+#[cfg(feature = "client")]
 pub use client::{Client, Config, SendWithoutResponse};
@@ -19,8 +19,8 @@ use nym_api_requests::ecash::{
    PartialExpirationDateSignatureResponse, VerificationKeyResponse,
 };
 use nym_api_requests::models::{
-    ApiHealthResponse, GatewayCoreStatusResponse, MixnodeCoreStatusResponse, MixnodeStatusResponse,
-    NymNodeDescription, RewardEstimationResponse, StakeSaturationResponse,
+    ApiHealthResponse, GatewayBondAnnotated, GatewayCoreStatusResponse, MixnodeCoreStatusResponse,
+    MixnodeStatusResponse, NymNodeDescription, RewardEstimationResponse, StakeSaturationResponse,
 };
 use nym_api_requests::models::{LegacyDescribedGateway, MixNodeBondAnnotated};
 use nym_api_requests::nym_nodes::SkimmedNode;
@@ -257,6 +257,13 @@ impl<C, S> Client<C, S> {
        Ok(self.nym_api.get_gateways().await?)
    }

+    #[deprecated]
+    pub async fn get_cached_gateways_detailed_unfiltered(
+        &self,
+    ) -> Result<Vec<GatewayBondAnnotated>, ValidatorClientError> {
+        Ok(self.nym_api.get_gateways_detailed_unfiltered().await?)
+    }
+
    // TODO: combine with NymApiClient...
    pub async fn get_all_cached_described_nodes(
        &self,
@@ -351,34 +358,19 @@ impl NymApiClient {
    }

    #[deprecated(note = "use get_all_basic_active_mixing_assigned_nodes instead")]
-    pub async fn get_basic_mixnodes(
-        &self,
-        semver_compatibility: Option<String>,
-    ) -> Result<Vec<SkimmedNode>, ValidatorClientError> {
-        Ok(self
-            .nym_api
-            .get_basic_mixnodes(semver_compatibility)
-            .await?
-            .nodes)
+    pub async fn get_basic_mixnodes(&self) -> Result<Vec<SkimmedNode>, ValidatorClientError> {
+        Ok(self.nym_api.get_basic_mixnodes().await?.nodes)
    }

    #[deprecated(note = "use get_all_basic_entry_assigned_nodes instead")]
-    pub async fn get_basic_gateways(
-        &self,
-        semver_compatibility: Option<String>,
-    ) -> Result<Vec<SkimmedNode>, ValidatorClientError> {
-        Ok(self
-            .nym_api
-            .get_basic_gateways(semver_compatibility)
-            .await?
-            .nodes)
+    pub async fn get_basic_gateways(&self) -> Result<Vec<SkimmedNode>, ValidatorClientError> {
+        Ok(self.nym_api.get_basic_gateways().await?.nodes)
    }

    /// retrieve basic information for nodes are capable of operating as an entry gateway
    /// this includes legacy gateways and nym-nodes
    pub async fn get_all_basic_entry_assigned_nodes(
        &self,
-        semver_compatibility: Option<String>,
    ) -> Result<Vec<SkimmedNode>, ValidatorClientError> {
        // TODO: deal with paging in macro or some helper function or something, because it's the same pattern everywhere
        let mut page = 0;
@@ -387,12 +379,7 @@ impl NymApiClient {
        loop {
            let mut res = self
                .nym_api
-                .get_basic_entry_assigned_nodes(
-                    semver_compatibility.clone(),
-                    false,
-                    Some(page),
-                    None,
-                )
+                .get_basic_entry_assigned_nodes(false, Some(page), None)
                .await?;

            nodes.append(&mut res.nodes.data);
@@ -410,7 +397,6 @@ impl NymApiClient {
    /// this includes legacy mixnodes and nym-nodes
    pub async fn get_all_basic_active_mixing_assigned_nodes(
        &self,
-        semver_compatibility: Option<String>,
    ) -> Result<Vec<SkimmedNode>, ValidatorClientError> {
        // TODO: deal with paging in macro or some helper function or something, because it's the same pattern everywhere
        let mut page = 0;
@@ -419,12 +405,7 @@ impl NymApiClient {
        loop {
            let mut res = self
                .nym_api
-                .get_basic_active_mixing_assigned_nodes(
-                    semver_compatibility.clone(),
-                    false,
-                    Some(page),
-                    None,
-                )
+                .get_basic_active_mixing_assigned_nodes(false, Some(page), None)
                .await?;

            nodes.append(&mut res.nodes.data);
@@ -442,7 +423,6 @@ impl NymApiClient {
    /// this includes legacy mixnodes and nym-nodes
    pub async fn get_all_basic_mixing_capable_nodes(
        &self,
-        semver_compatibility: Option<String>,
    ) -> Result<Vec<SkimmedNode>, ValidatorClientError> {
        // TODO: deal with paging in macro or some helper function or something, because it's the same pattern everywhere
        let mut page = 0;
@@ -451,12 +431,7 @@ impl NymApiClient {
        loop {
            let mut res = self
                .nym_api
-                .get_basic_mixing_capable_nodes(
-                    semver_compatibility.clone(),
-                    false,
-                    Some(page),
-                    None,
-                )
+                .get_basic_mixing_capable_nodes(false, Some(page), None)
                .await?;

            nodes.append(&mut res.nodes.data);
@@ -471,10 +446,7 @@ impl NymApiClient {
    }

    /// retrieve basic information for all bonded nodes on the network
-    pub async fn get_all_basic_nodes(
-        &self,
-        semver_compatibility: Option<String>,
-    ) -> Result<Vec<SkimmedNode>, ValidatorClientError> {
+    pub async fn get_all_basic_nodes(&self) -> Result<Vec<SkimmedNode>, ValidatorClientError> {
        // TODO: deal with paging in macro or some helper function or something, because it's the same pattern everywhere
        let mut page = 0;
        let mut nodes = Vec::new();
@@ -482,7 +454,7 @@ impl NymApiClient {
        loop {
            let mut res = self
                .nym_api
-                .get_basic_nodes(semver_compatibility.clone(), false, Some(page), None)
+                .get_basic_nodes(false, Some(page), None)
                .await?;

            nodes.append(&mut res.nodes.data);
@@ -65,6 +65,12 @@ pub enum EcashApiError {
        #[from]
        source: cosmrs::ErrorReport,
    },
+
+    #[error("nym api error")]
+    NymApi {
+        #[from]
+        source: crate::ValidatorClientError,
+    },
 }

 impl TryFrom<ContractVKShare> for EcashApiClient {
@@ -102,6 +102,23 @@ pub trait NymApiClientExt: ApiClient {
        .await
    }

+    #[deprecated]
+    #[instrument(level = "debug", skip(self))]
+    async fn get_gateways_detailed_unfiltered(
+        &self,
+    ) -> Result<Vec<GatewayBondAnnotated>, NymAPIError> {
+        self.get_json(
+            &[
+                routes::API_VERSION,
+                routes::STATUS,
+                routes::GATEWAYS,
+                routes::DETAILED_UNFILTERED,
+            ],
+            NO_PARAMS,
+        )
+        .await
+    }
+
    #[deprecated]
    #[instrument(level = "debug", skip(self))]
    async fn get_mixnodes_detailed_unfiltered(
@@ -188,16 +205,7 @@ pub trait NymApiClientExt: ApiClient {

    #[deprecated]
    #[tracing::instrument(level = "debug", skip_all)]
-    async fn get_basic_mixnodes(
-        &self,
-        semver_compatibility: Option<String>,
-    ) -> Result<CachedNodesResponse<SkimmedNode>, NymAPIError> {
-        let params = if let Some(semver_compatibility) = &semver_compatibility {
-            vec![("semver_compatibility", semver_compatibility.as_str())]
-        } else {
-            vec![]
-        };
-
+    async fn get_basic_mixnodes(&self) -> Result<CachedNodesResponse<SkimmedNode>, NymAPIError> {
        self.get_json(
            &[
                routes::API_VERSION,
@@ -206,23 +214,14 @@ pub trait NymApiClientExt: ApiClient {
                "mixnodes",
                "skimmed",
            ],
-            &params,
+            NO_PARAMS,
        )
        .await
    }

    #[deprecated]
    #[instrument(level = "debug", skip(self))]
-    async fn get_basic_gateways(
-        &self,
-        semver_compatibility: Option<String>,
-    ) -> Result<CachedNodesResponse<SkimmedNode>, NymAPIError> {
-        let params = if let Some(semver_compatibility) = &semver_compatibility {
-            vec![("semver_compatibility", semver_compatibility.as_str())]
-        } else {
-            vec![]
-        };
-
+    async fn get_basic_gateways(&self) -> Result<CachedNodesResponse<SkimmedNode>, NymAPIError> {
        self.get_json(
            &[
                routes::API_VERSION,
@@ -231,7 +230,7 @@ pub trait NymApiClientExt: ApiClient {
                "gateways",
                "skimmed",
            ],
-            &params,
+            NO_PARAMS,
        )
        .await
    }
@@ -241,17 +240,12 @@ pub trait NymApiClientExt: ApiClient {
    #[instrument(level = "debug", skip(self))]
    async fn get_basic_entry_assigned_nodes(
        &self,
-        semver_compatibility: Option<String>,
        no_legacy: bool,
        page: Option<u32>,
        per_page: Option<u32>,
    ) -> Result<PaginatedCachedNodesResponse<SkimmedNode>, NymAPIError> {
        let mut params = Vec::new();

-        if let Some(arg) = &semver_compatibility {
-            params.push(("semver_compatibility", arg.clone()))
-        }
-
        if no_legacy {
            params.push(("no_legacy", "true".to_string()))
        }
@@ -283,17 +277,12 @@ pub trait NymApiClientExt: ApiClient {
    #[instrument(level = "debug", skip(self))]
    async fn get_basic_active_mixing_assigned_nodes(
        &self,
-        semver_compatibility: Option<String>,
        no_legacy: bool,
        page: Option<u32>,
        per_page: Option<u32>,
    ) -> Result<PaginatedCachedNodesResponse<SkimmedNode>, NymAPIError> {
        let mut params = Vec::new();

-        if let Some(arg) = &semver_compatibility {
-            params.push(("semver_compatibility", arg.clone()))
-        }
-
        if no_legacy {
            params.push(("no_legacy", "true".to_string()))
        }
@@ -325,17 +314,12 @@ pub trait NymApiClientExt: ApiClient {
    #[instrument(level = "debug", skip(self))]
    async fn get_basic_mixing_capable_nodes(
        &self,
-        semver_compatibility: Option<String>,
        no_legacy: bool,
        page: Option<u32>,
        per_page: Option<u32>,
    ) -> Result<PaginatedCachedNodesResponse<SkimmedNode>, NymAPIError> {
        let mut params = Vec::new();

-        if let Some(arg) = &semver_compatibility {
-            params.push(("semver_compatibility", arg.clone()))
-        }
-
        if no_legacy {
            params.push(("no_legacy", "true".to_string()))
        }
@@ -365,17 +349,12 @@ pub trait NymApiClientExt: ApiClient {
    #[instrument(level = "debug", skip(self))]
    async fn get_basic_nodes(
        &self,
-        semver_compatibility: Option<String>,
        no_legacy: bool,
        page: Option<u32>,
        per_page: Option<u32>,
    ) -> Result<PaginatedCachedNodesResponse<SkimmedNode>, NymAPIError> {
        let mut params = Vec::new();

-        if let Some(arg) = &semver_compatibility {
-            params.push(("semver_compatibility", arg.clone()))
-        }
-
        if no_legacy {
            params.push(("no_legacy", "true".to_string()))
        }
@@ -26,10 +26,11 @@ use nym_mixnet_contract_common::{
    reward_params::{Performance, RewardingParams},
    rewarding::{EstimatedCurrentEpochRewardResponse, PendingRewardResponse},
    ContractBuildInformation, ContractState, ContractStateParams, CurrentIntervalResponse,
-    Delegation, EpochEventId, EpochStatus, GatewayBond, GatewayBondResponse,
-    GatewayOwnershipResponse, IdentityKey, IdentityKeyRef, IntervalEventId, MixNodeBond,
-    MixNodeDetails, MixOwnershipResponse, MixnodeDetailsByIdentityResponse, MixnodeDetailsResponse,
-    NodeId, NumberOfPendingEventsResponse, NymNodeBond, NymNodeDetails,
+    CurrentNymNodeVersionResponse, Delegation, EpochEventId, EpochStatus, GatewayBond,
+    GatewayBondResponse, GatewayOwnershipResponse, HistoricalNymNodeVersionEntry, IdentityKey,
+    IdentityKeyRef, IntervalEventId, MixNodeBond, MixNodeDetails, MixOwnershipResponse,
+    MixnodeDetailsByIdentityResponse, MixnodeDetailsResponse, NodeId,
+    NumberOfPendingEventsResponse, NymNodeBond, NymNodeDetails, NymNodeVersionHistoryResponse,
    PagedAllDelegationsResponse, PagedDelegatorDelegationsResponse, PagedGatewayResponse,
    PagedMixnodeBondsResponse, PagedNodeDelegationsResponse, PendingEpochEvent,
    PendingEpochEventResponse, PendingEpochEventsResponse, PendingIntervalEvent,
@@ -71,6 +72,22 @@ pub trait MixnetQueryClient {
            .await
    }

+    async fn get_nym_node_version_history_paged(
+        &self,
+        start_after: Option<u32>,
+        limit: Option<u32>,
+    ) -> Result<NymNodeVersionHistoryResponse, NyxdError> {
+        self.query_mixnet_contract(MixnetQueryMsg::GetNymNodeVersionHistory { limit, start_after })
+            .await
+    }
+
+    async fn get_current_nym_node_version(
+        &self,
+    ) -> Result<CurrentNymNodeVersionResponse, NyxdError> {
+        self.query_mixnet_contract(MixnetQueryMsg::GetCurrentNymNodeVersion {})
+            .await
+    }
+
    async fn get_mixnet_contract_state(&self) -> Result<ContractState, NyxdError> {
        self.query_mixnet_contract(MixnetQueryMsg::GetState {})
            .await
@@ -638,6 +655,12 @@ pub trait PagedMixnetQueryClient: MixnetQueryClient {
    ) -> Result<Vec<PendingIntervalEvent>, NyxdError> {
        collect_paged!(self, get_pending_interval_events_paged, events)
    }
+
+    async fn get_full_nym_node_version_history(
+        &self,
+    ) -> Result<Vec<HistoricalNymNodeVersionEntry>, NyxdError> {
+        collect_paged!(self, get_nym_node_version_history_paged, history)
+    }
 }

 #[async_trait]
@@ -724,6 +747,7 @@ where
 mod tests {
    use super::*;
    use crate::nyxd::contract_traits::tests::IgnoreValue;
+    use nym_mixnet_contract_common::QueryMsg;

    // it's enough that this compiles and clippy is happy about it
    #[allow(dead_code)]
@@ -924,6 +948,10 @@ mod tests {
            MixnetQueryMsg::GetRewardedSetMetadata {} => {
                client.get_rewarded_set_metadata().ignore()
            }
+            QueryMsg::GetCurrentNymNodeVersion {} => client.get_current_nym_node_version().ignore(),
+            QueryMsg::GetNymNodeVersionHistory { limit, start_after } => client
+                .get_nym_node_version_history_paged(start_after, limit)
+                .ignore(),
        }
    }
 }
@@ -48,6 +48,7 @@ nym-vesting-contract-common = { path = "../cosmwasm-smart-contracts/vesting-cont
 nym-coconut-dkg-common = { path = "../cosmwasm-smart-contracts/coconut-dkg" }
 nym-multisig-contract-common = { path = "../cosmwasm-smart-contracts/multisig-contract" }
 nym-ecash-contract-common = { path = "../cosmwasm-smart-contracts/ecash-contract" }
+nym-ecash-time = { path = "../../common/ecash-time" }
 nym-sphinx = { path = "../../common/nymsphinx" }
 nym-client-core = { path = "../../common/client-core" }
 nym-config = { path = "../../common/config" }
@@ -56,6 +57,7 @@ nym-credentials-interface = { path = "../../common/credentials-interface" }
 nym-credential-storage = { path = "../../common/credential-storage" }
 nym-credential-utils = { path = "../../common/credential-utils" }
 nym-id = { path = "../nym-id" }
+nym-credential-proxy-requests = { path = "../../nym-credential-proxy/nym-credential-proxy-requests" }

 nym-pemstore = { path = "../../common/pemstore", version = "0.3.0" }
 nym-types = { path = "../../common/types" }
@@ -0,0 +1,41 @@
+// Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use clap::Parser;
+use log::trace;
+use nym_credentials_interface::{generate_keypair_user, generate_keypair_user_from_seed, Base58};
+use serde::{Deserialize, Serialize};
+use std::io::stdout;
+
+#[derive(Serialize, Deserialize)]
+pub struct Bs58EncodedKeys {
+    pub secret_key: String,
+    pub public_key: String,
+}
+
+#[derive(Debug, Parser)]
+pub struct Args {
+    /// Secret value that's used for deriving underlying ecash keypair
+    #[clap(long)]
+    pub(crate) bs58_encoded_client_secret: Option<String>,
+}
+
+pub fn generate_ecash_keypair(args: Args) -> anyhow::Result<()> {
+    trace!("args: {args:?}");
+
+    let keypair = if let Some(secret) = args.bs58_encoded_client_secret {
+        let seed = bs58::decode(&secret).into_vec()?;
+        generate_keypair_user_from_seed(&seed)
+    } else {
+        generate_keypair_user()
+    };
+
+    let encoded = Bs58EncodedKeys {
+        secret_key: keypair.secret_key().to_bs58(),
+        public_key: keypair.public_key().to_bs58(),
+    };
+
+    serde_json::to_writer_pretty(stdout(), &encoded)?;
+
+    Ok(())
+}
@@ -0,0 +1,23 @@
+// Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use clap::{Args, Subcommand};
+
+pub mod generate_keypair;
+pub mod withdrawal_request;
+
+#[derive(Debug, Args)]
+#[clap(args_conflicts_with_subcommands = true, subcommand_required = true)]
+pub struct InternalEcash {
+    #[clap(subcommand)]
+    pub command: InternalEcashCommands,
+}
+
+#[derive(Debug, Subcommand)]
+pub enum InternalEcashCommands {
+    /// Generate a dummy withdrawal request
+    GenerateWithdrawalRequest(withdrawal_request::Args),
+
+    /// Generate dummy ecash keypair
+    GenerateKeypair(generate_keypair::Args),
+}
@@ -0,0 +1,78 @@
+// Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use clap::Parser;
+use log::trace;
+use nym_credential_proxy_requests::api::v1::ticketbook::models::TicketbookRequest;
+use nym_credentials_interface::{
+    generate_keypair_user, withdrawal_request, Base58, SecretKeyUser, TicketType,
+};
+use nym_ecash_time::{ecash_default_expiration_date, EcashTime};
+use serde::{Deserialize, Serialize};
+use std::io::stdout;
+use time::macros::format_description;
+use time::Date;
+use zeroize::Zeroizing;
+
+fn parse_date(raw: &str) -> Result<Date, time::error::Parse> {
+    let format = format_description!("[year]-[month]-[day]");
+    Date::parse(raw, &format)
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct Bs58EncodedOutput {
+    pub ecash_proxy_request: TicketbookRequest,
+    pub ecash_secret: String,
+
+    /// Needed to later unblind shares
+    pub ecash_request_info_bs58: String,
+}
+
+#[derive(Debug, Parser)]
+pub struct Args {
+    /// Specify which type of ticketbook
+    #[clap(long, default_value_t = TicketType::V1MixnetEntry)]
+    pub(crate) ticketbook_type: TicketType,
+
+    /// Set expiration date for the ticketbook
+    #[clap(long, value_parser = parse_date, default_value_t = ecash_default_expiration_date())]
+    pub(crate) expiration_date: Date,
+
+    /// Provide ecash secret key (or generate a fresh one)
+    #[clap(long)]
+    pub(crate) ecash_secret_key_bs58: Option<String>,
+}
+
+pub async fn generate_withdrawal_request(args: Args) -> anyhow::Result<()> {
+    trace!("args: {args:?}");
+
+    let ecash_keypair = if let Some(secret_key) = args.ecash_secret_key_bs58 {
+        let secret_key = Zeroizing::new(bs58::decode(Zeroizing::new(secret_key)).into_vec()?);
+        let sk = SecretKeyUser::from_bytes(&secret_key)?;
+        sk.into()
+    } else {
+        generate_keypair_user()
+    };
+
+    let (withdrawal_request, request_info) = withdrawal_request(
+        ecash_keypair.secret_key(),
+        args.expiration_date.ecash_unix_timestamp(),
+        args.ticketbook_type.encode(),
+    )?;
+
+    let encoded = Bs58EncodedOutput {
+        ecash_proxy_request: TicketbookRequest {
+            withdrawal_request: withdrawal_request.into(),
+            ecash_pubkey: ecash_keypair.public_key(),
+            expiration_date: args.expiration_date,
+            ticketbook_type: args.ticketbook_type,
+            is_freepass_request: false,
+        },
+        ecash_secret: ecash_keypair.secret_key().to_bs58(),
+        ecash_request_info_bs58: request_info.to_bs58(),
+    };
+
+    serde_json::to_writer_pretty(stdout(), &encoded)?;
+
+    Ok(())
+}
@@ -0,0 +1,19 @@
+// Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use clap::{Args, Subcommand};
+
+pub mod ecash;
+
+#[derive(Debug, Args)]
+#[clap(args_conflicts_with_subcommands = true, subcommand_required = true)]
+pub struct Internal {
+    #[clap(subcommand)]
+    pub command: InternalCommands,
+}
+
+#[derive(Debug, Subcommand)]
+pub enum InternalCommands {
+    /// Ecash related internal commands
+    Ecash(ecash::InternalEcash),
+}
@@ -3,5 +3,6 @@

 pub mod context;
 pub mod ecash;
+pub mod internal;
 pub mod utils;
 pub mod validator;
@@ -0,0 +1,18 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+/**
+ * Specification on how the active set should be updated.
+ */
+export type ActiveSetUpdate = { 
+/**
+ * The expected number of nodes assigned entry gateway role (i.e. [`Role::EntryGateway`])
+ */
+entry_gateways: number, 
+/**
+ * The expected number of nodes assigned exit gateway role (i.e. [`Role::ExitGateway`])
+ */
+exit_gateways: number, 
+/**
+ * The expected number of nodes assigned the 'mixnode' role, i.e. total of [`Role::Layer1`], [`Role::Layer2`] and [`Role::Layer3`].
+ */
+mixnodes: number, };
@@ -0,0 +1,3 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type GatewayConfigUpdate = { host: string, mix_port: number, clients_port: number, location: string, version: string, };
@@ -0,0 +1,30 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+/**
+ * Specification of a rewarding interval.
+ */
+export type Interval = { 
+/**
+ * Monotonously increasing id of this interval.
+ */
+id: number, 
+/**
+ * Number of epochs in this interval.
+ */
+epochs_in_interval: number, 
+/**
+ * The timestamp indicating the start of the current rewarding epoch.
+ */
+current_epoch_start: string, 
+/**
+ * Monotonously increasing id of the current epoch in this interval.
+ */
+current_epoch_id: number, 
+/**
+ * The duration of all epochs in this interval.
+ */
+epoch_length: { secs: number; nanos: number; }, 
+/**
+ * The total amount of elapsed epochs since the first epoch of the first interval.
+ */
+total_elapsed_epochs: number, };
@@ -0,0 +1,51 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+/**
+ * Parameters required by the mix-mining reward distribution that do not change during an interval.
+ */
+export type IntervalRewardParams = { 
+/**
+ * Current value of the rewarding pool.
+ * It is expected to be constant throughout the interval.
+ */
+reward_pool: string, 
+/**
+ * Current value of the staking supply.
+ * It is expected to be constant throughout the interval.
+ */
+staking_supply: string, 
+/**
+ * Defines the percentage of stake needed to reach saturation for all of the nodes in the rewarded set.
+ * Also known as `beta`.
+ */
+staking_supply_scale_factor: string, 
+/**
+ * Current value of the computed reward budget per epoch, per node.
+ * It is expected to be constant throughout the interval.
+ */
+epoch_reward_budget: string, 
+/**
+ * Current value of the stake saturation point.
+ * It is expected to be constant throughout the interval.
+ */
+stake_saturation_point: string, 
+/**
+ * Current value of the sybil resistance percent (`alpha`).
+ * It is not really expected to be changing very often.
+ * As a matter of fact, unless there's a very specific reason, it should remain constant.
+ */
+sybil_resistance: string, 
+/**
+ * Current active set work factor.
+ * It is not really expected to be changing very often.
+ * As a matter of fact, unless there's a very specific reason, it should remain constant.
+ */
+active_set_work_factor: string, 
+/**
+ * Current maximum interval pool emission.
+ * Assuming all nodes in the rewarded set are fully saturated and have 100% performance,
+ * this % of the reward pool would get distributed in rewards to all operators and its delegators.
+ * It is not really expected to be changing very often.
+ * As a matter of fact, unless there's a very specific reason, it should remain constant.
+ */
+interval_pool_emission: string, };
@@ -0,0 +1,35 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+import type { RewardedSetParams } from "./RewardedSetParams";
+
+/**
+ * Specification on how the rewarding params should be updated.
+ */
+export type IntervalRewardingParamsUpdate = { 
+/**
+ * Defines the new value of the reward pool.
+ */
+reward_pool: string | null, 
+/**
+ * Defines the new value of the staking supply.
+ */
+staking_supply: string | null, 
+/**
+ * Defines the new value of the staking supply scale factor.
+ */
+staking_supply_scale_factor: string | null, 
+/**
+ * Defines the new value of the sybil resistance percent.
+ */
+sybil_resistance_percent: string | null, 
+/**
+ * Defines the new value of the active set work factor.
+ */
+active_set_work_factor: string | null, 
+/**
+ * Defines the new value of the interval pool emission rate.
+ */
+interval_pool_emission: string | null, 
+/**
+ * Defines the parameters of the rewarded set.
+ */
+rewarded_set_params: RewardedSetParams | null, };
@@ -0,0 +1,3 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type MixNodeConfigUpdate = { host: string, mix_port: number, verloc_port: number, http_api_port: number, version: string, };
@@ -0,0 +1,34 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+/**
+ * Information provided by the node operator during bonding that are used to allow other entities to use the services of this node.
+ */
+export type MixNode = { 
+/**
+ * Network address of this mixnode, for example 1.1.1.1 or foo.mixnode.com
+ */
+host: string, 
+/**
+ * Port used by this mixnode for listening for mix packets.
+ */
+mix_port: number, 
+/**
+ * Port used by this mixnode for listening for verloc requests.
+ */
+verloc_port: number, 
+/**
+ * Port used by this mixnode for its http(s) API
+ */
+http_api_port: number, 
+/**
+ * Base58-encoded x25519 public key used for sphinx key derivation.
+ */
+sphinx_key: string, 
+/**
+ * Base58-encoded ed25519 EdDSA public key.
+ */
+identity_key: string, 
+/**
+ * The self-reported semver version of this mixnode.
+ */
+version: string, };
@@ -0,0 +1,3 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type NodeConfigUpdate = { host: string | null, custom_http_port: number | null, restore_default_http_port: boolean, };
@@ -0,0 +1,15 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+/**
+ * Parameters used for rewarding particular node.
+ */
+export type NodeRewardingParameters = { 
+/**
+ * Performance of the particular node in the current epoch.
+ */
+performance: string, 
+/**
+ * Amount of work performed by this node in the current epoch
+ * also known as 'omega' in the paper
+ */
+work_factor: string, };
@@ -0,0 +1,20 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+/**
+ * Information provided by the node operator during bonding that are used to allow other entities to use the services of this node.
+ */
+export type NymNode = { 
+/**
+ * Network address of this nym-node, for example 1.1.1.1 or foo.mixnode.com
+ * that is used to discover other capabilities of this node.
+ */
+host: string, 
+/**
+ * Allow specifying custom port for accessing the http, and thus self-described, api
+ * of this node for the capabilities discovery.
+ */
+custom_http_port: number | null, 
+/**
+ * Base58-encoded ed25519 EdDSA public key.
+ */
+identity_key: string, };
@@ -0,0 +1,3 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type PendingMixNodeChanges = { pledge_change: number | null, cost_params_change: number | null, };
@@ -0,0 +1,3 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type PendingNodeChanges = { pledge_change: number | null, cost_params_change: number | null, };
@@ -0,0 +1,20 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type RewardEstimate = { 
+/**
+ * The amount of **decimal** coins that are going to get distributed to the node,
+ * i.e. the operator and all its delegators.
+ */
+total_node_reward: string, 
+/**
+ * The share of the reward that is going to get distributed to the node operator.
+ */
+operator: string, 
+/**
+ * The share of the reward that is going to get distributed among the node delegators.
+ */
+delegates: string, 
+/**
+ * The operating cost of this node. Note: it's already included in the operator reward.
+ */
+operating_cost: string, };
@@ -0,0 +1,19 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type RewardedSetParams = { 
+/**
+ * The expected number of nodes assigned entry gateway role (i.e. [`Role::EntryGateway`])
+ */
+entry_gateways: number, 
+/**
+ * The expected number of nodes assigned exit gateway role (i.e. [`Role::ExitGateway`])
+ */
+exit_gateways: number, 
+/**
+ * The expected number of nodes assigned the 'mixnode' role, i.e. total of [`Role::Layer1`], [`Role::Layer2`] and [`Role::Layer3`].
+ */
+mixnodes: number, 
+/**
+ * Number of nodes in the 'standby' set. (i.e. [`Role::Standby`])
+ */
+standby: number, };
@@ -0,0 +1,12 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+import type { IntervalRewardParams } from "./IntervalRewardParams";
+import type { RewardedSetParams } from "./RewardedSetParams";
+
+/**
+ * Parameters used for reward calculation.
+ */
+export type RewardingParams = { 
+/**
+ * Parameters that should remain unchanged throughout an interval.
+ */
+interval: IntervalRewardParams, rewarded_set: RewardedSetParams, };
@@ -0,0 +1,3 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type Role = "EntryGateway" | "Layer1" | "Layer2" | "Layer3" | "ExitGateway" | "Standby";
@@ -0,0 +1,23 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+/**
+ * Basic information of a node that used to be part of the mix network but has already unbonded.
+ */
+export type UnbondedMixnode = { 
+/**
+ * Base58-encoded ed25519 EdDSA public key.
+ */
+identity_key: string, 
+/**
+ * Address of the owner of this mixnode.
+ */
+owner: string, 
+/**
+ * Entity who bonded this mixnode on behalf of the owner.
+ * If exists, it's most likely the address of the vesting contract.
+ */
+proxy: string | null, 
+/**
+ * Block height at which this mixnode has unbonded.
+ */
+unbonding_height: number, };
@@ -0,0 +1,673 @@
+// Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+use cosmwasm_schema::cw_serde;
+use cosmwasm_std::Decimal;
+use std::cmp::Ordering;
+use std::ops::{Add, Sub};
+
+#[cw_serde]
+pub struct HistoricalNymNodeVersion {
+    /// Version of the nym node that is going to be used for determining the version score of a node.
+    /// note: value stored here is pre-validated `semver::Version`
+    pub semver: String,
+
+    /// Block height of when this version has been added to the contract
+    pub introduced_at_height: u64,
+
+    /// The absolute version difference as compared against the first version introduced into the contract.
+    pub difference_since_genesis: TotalVersionDifference,
+}
+
+impl HistoricalNymNodeVersion {
+    pub fn genesis(semver: String, height: u64) -> HistoricalNymNodeVersion {
+        HistoricalNymNodeVersion {
+            semver,
+            introduced_at_height: height,
+            difference_since_genesis: Default::default(),
+        }
+    }
+
+    // SAFETY: the value stored in the contract is always valid
+    // if you manually construct that struct with invalid value, it's on you.
+    #[allow(clippy::unwrap_used)]
+    pub fn semver_unchecked(&self) -> semver::Version {
+        self.semver.parse().unwrap()
+    }
+
+    /// Return [`TotalVersionDifference`] for a new release version that is going to be pushed right after this one
+    /// this function cannot be called against 2 arbitrary versions
+    #[inline]
+    pub fn cumulative_difference_since_genesis(
+        &self,
+        new_version: &semver::Version,
+    ) -> TotalVersionDifference {
+        let self_semver = self.semver_unchecked();
+        let mut new_absolute = self.difference_since_genesis;
+        if new_version.major > self_semver.major {
+            new_absolute.major += (new_version.major - self_semver.major) as u32
+        } else if new_version.minor > self_semver.minor {
+            new_absolute.minor += (new_version.minor - self_semver.minor) as u32
+        } else if new_version.patch > self_semver.patch {
+            new_absolute.patch += (new_version.patch - self_semver.patch) as u32
+        } else if new_version.pre != self_semver.pre {
+            new_absolute.prerelease += 1
+        }
+        new_absolute
+    }
+
+    pub fn relative_difference(&self, other: &Self) -> TotalVersionDifference {
+        if self.difference_since_genesis > other.difference_since_genesis {
+            self.difference_since_genesis - other.difference_since_genesis
+        } else {
+            other.difference_since_genesis - self.difference_since_genesis
+        }
+    }
+
+    pub fn difference_against_legacy(
+        &self,
+        legacy_version: &semver::Version,
+    ) -> TotalVersionDifference {
+        let current = self.semver_unchecked();
+        let major_diff = (current.major as i64 - legacy_version.major as i64).unsigned_abs() as u32;
+        let minor_diff = (current.minor as i64 - legacy_version.minor as i64).unsigned_abs() as u32;
+        let patch_diff = (current.patch as i64 - legacy_version.patch as i64).unsigned_abs() as u32;
+        let prerelease_diff = if current.pre == legacy_version.pre {
+            0
+        } else {
+            1
+        };
+
+        let mut diff = TotalVersionDifference::default();
+        // if there's a major increase, ignore minor and patch and treat it as 0
+        if major_diff != 0 {
+            diff.major += major_diff;
+            return diff;
+        }
+
+        // if there's a minor increase, ignore patch and treat is as 0
+        if minor_diff != 0 {
+            diff.minor += minor_diff;
+            return diff;
+        }
+
+        diff.patch = patch_diff;
+        diff.prerelease = prerelease_diff;
+        diff
+    }
+}
+
+#[cw_serde]
+#[derive(Default, Copy, PartialOrd, Ord, Eq)]
+pub struct TotalVersionDifference {
+    pub major: u32,
+    pub minor: u32,
+    pub patch: u32,
+    pub prerelease: u32,
+}
+
+impl Add for TotalVersionDifference {
+    type Output = TotalVersionDifference;
+    fn add(self, rhs: TotalVersionDifference) -> Self::Output {
+        TotalVersionDifference {
+            major: self.major.add(rhs.major),
+            minor: self.minor.add(rhs.minor),
+            patch: self.patch.add(rhs.patch),
+            prerelease: self.prerelease.add(rhs.prerelease),
+        }
+    }
+}
+
+impl Sub for TotalVersionDifference {
+    type Output = TotalVersionDifference;
+    fn sub(self, rhs: TotalVersionDifference) -> Self::Output {
+        TotalVersionDifference {
+            major: self.major.saturating_sub(rhs.major),
+            minor: self.minor.saturating_sub(rhs.minor),
+            patch: self.patch.saturating_sub(rhs.patch),
+            prerelease: self.prerelease.saturating_sub(rhs.prerelease),
+        }
+    }
+}
+
+#[cw_serde]
+pub struct HistoricalNymNodeVersionEntry {
+    /// The unique, ordered, id of this particular entry
+    pub id: u32,
+
+    /// Data associated with this particular version
+    pub version_information: HistoricalNymNodeVersion,
+}
+
+impl From<(u32, HistoricalNymNodeVersion)> for HistoricalNymNodeVersionEntry {
+    fn from((id, version_information): (u32, HistoricalNymNodeVersion)) -> Self {
+        HistoricalNymNodeVersionEntry {
+            id,
+            version_information,
+        }
+    }
+}
+
+impl PartialOrd for HistoricalNymNodeVersionEntry {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        // we only care about id for the purposes of ordering as they should have unique data
+        self.id.partial_cmp(&other.id)
+    }
+}
+
+#[cw_serde]
+pub struct NymNodeVersionHistoryResponse {
+    pub history: Vec<HistoricalNymNodeVersionEntry>,
+
+    /// Field indicating paging information for the following queries if the caller wishes to get further entries.
+    pub start_next_after: Option<u32>,
+}
+
+#[cw_serde]
+pub struct CurrentNymNodeVersionResponse {
+    pub version: Option<HistoricalNymNodeVersionEntry>,
+}
+
+#[cw_serde]
+pub struct ConfigScoreParams {
+    /// Defines weights for calculating numbers of versions behind the current release.
+    pub version_weights: OutdatedVersionWeights,
+
+    /// Defines the parameters of the formula for calculating the version score
+    pub version_score_formula_params: VersionScoreFormulaParams,
+}
+
+/// Defines weights for calculating numbers of versions behind the current release.
+#[cw_serde]
+#[derive(Copy)]
+pub struct OutdatedVersionWeights {
+    pub major: u32,
+    pub minor: u32,
+    pub patch: u32,
+    pub prerelease: u32,
+}
+
+fn is_one_semver_difference(this: &semver::Version, other: &semver::Version) -> bool {
+    let major_diff = (this.major as i64 - other.major as i64).unsigned_abs() as u32;
+    let minor_diff = (this.minor as i64 - other.minor as i64).unsigned_abs() as u32;
+    let patch_diff = (this.patch as i64 - other.patch as i64).unsigned_abs() as u32;
+    let prerelease_diff = if this.pre == other.pre { 0 } else { 1 };
+
+    if major_diff == 1 {
+        return true;
+    }
+
+    if major_diff == 0 && minor_diff == 1 {
+        return true;
+    }
+
+    if major_diff == 0 && minor_diff == 0 && patch_diff == 1 {
+        return true;
+    }
+
+    prerelease_diff == 1
+}
+
+impl OutdatedVersionWeights {
+    pub fn difference_to_versions_behind_factor(&self, diff: TotalVersionDifference) -> u32 {
+        diff.major * self.major
+            + diff.minor * self.minor
+            + diff.patch * self.patch
+            + diff.prerelease * self.prerelease
+    }
+
+    // INVARIANT: release chain is sorted
+    // do NOT call this method directly from inside the contract. it's too inefficient
+    // it relies on some external caching.
+    pub fn versions_behind_factor(
+        &self,
+        node_version: &semver::Version,
+        release_chain: &[HistoricalNymNodeVersionEntry],
+    ) -> u32 {
+        let Some(latest) = release_chain.last() else {
+            return 0;
+        };
+
+        let latest_semver = latest.version_information.semver_unchecked();
+
+        // if you're more recent than the latest, you get the benefit of the doubt, the release might have not yet been commited to the chain
+        // but only if you're only a single semver ahead, otherwise you get penalty equivalent of being major version behind for cheating
+        if node_version > &latest_semver {
+            return if is_one_semver_difference(node_version, &latest_semver) {
+                0
+            } else {
+                self.major
+            };
+        }
+
+        // find your position in the release chain, if we fail, we assume that the node comes from before the changes were introduced
+        // in which case we simply calculate the absolute difference between the genesis entry and add up the total difference
+        let version_diff = match release_chain
+            .iter()
+            .rfind(|h| &h.version_information.semver_unchecked() <= node_version)
+        {
+            Some(h) => {
+                // first chain entry that is smaller (or equal) to the provided node version
+                // now, calculate the difference to the genesis version and ultimately against the current head
+                let diff_since_genesis = if h.version_information.semver == node_version.to_string()
+                {
+                    h.version_information.difference_since_genesis
+                } else {
+                    h.version_information
+                        .cumulative_difference_since_genesis(node_version)
+                };
+                latest.version_information.difference_since_genesis - diff_since_genesis
+            }
+            None => {
+                // SAFETY: since we managed to get 'last' entry, it means the release chain is not empty,
+                // so we must be able to obtain the first entry
+                #[allow(clippy::unwrap_used)]
+                let genesis = release_chain.first().unwrap();
+
+                let difference_from_genesis = genesis
+                    .version_information
+                    .difference_against_legacy(node_version);
+                difference_from_genesis + latest.version_information.difference_since_genesis
+            }
+        };
+
+        self.difference_to_versions_behind_factor(version_diff)
+    }
+}
+
+impl Default for OutdatedVersionWeights {
+    fn default() -> Self {
+        OutdatedVersionWeights {
+            major: 100,
+            minor: 10,
+            patch: 1,
+            prerelease: 1,
+        }
+    }
+}
+
+/// Given the formula of version_score = penalty ^ (versions_behind_factor ^ penalty_scaling)
+/// define the relevant parameters
+#[cw_serde]
+#[derive(Copy)]
+pub struct VersionScoreFormulaParams {
+    pub penalty: Decimal,
+    pub penalty_scaling: Decimal,
+}
+
+impl Default for VersionScoreFormulaParams {
+    fn default() -> Self {
+        #[allow(clippy::unwrap_used)]
+        VersionScoreFormulaParams {
+            penalty: "0.995".parse().unwrap(),
+            penalty_scaling: "1.65".parse().unwrap(),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::ops::Deref;
+
+    // simple wrapper for tests
+    struct ReleaseChain {
+        inner: Vec<HistoricalNymNodeVersionEntry>,
+    }
+
+    impl Deref for ReleaseChain {
+        type Target = [HistoricalNymNodeVersionEntry];
+        fn deref(&self) -> &Self::Target {
+            self.inner.deref()
+        }
+    }
+
+    impl ReleaseChain {
+        fn new(initial: &str) -> Self {
+            ReleaseChain {
+                inner: vec![HistoricalNymNodeVersionEntry {
+                    id: 0,
+                    version_information: HistoricalNymNodeVersion {
+                        semver: initial.to_string(),
+                        introduced_at_height: 123,
+                        difference_since_genesis: TotalVersionDifference::default(),
+                    },
+                }],
+            }
+        }
+
+        fn with_release(mut self, raw: &str) -> Self {
+            self.push_new(raw);
+            self
+        }
+
+        fn push_new(&mut self, raw: &str) {
+            let latest = self.inner.last().unwrap();
+            let new_version: semver::Version = raw.parse().unwrap();
+
+            let new_absolute = latest
+                .version_information
+                .cumulative_difference_since_genesis(&new_version);
+
+            self.inner.push(HistoricalNymNodeVersionEntry {
+                id: latest.id + 1,
+                version_information: HistoricalNymNodeVersion {
+                    semver: new_version.to_string(),
+                    introduced_at_height: latest.version_information.introduced_at_height + 1,
+                    difference_since_genesis: new_absolute,
+                },
+            })
+        }
+    }
+
+    #[test]
+    fn versions_behind_factor() {
+        // helper to compact the parsing
+        fn s(raw: &str) -> semver::Version {
+            raw.parse().unwrap()
+        }
+
+        let weights = OutdatedVersionWeights::default();
+
+        // no releases:
+        let res = weights.versions_behind_factor(&s("1.1.13"), &[]);
+        assert_eq!(0, res);
+
+        // ###############################
+        // single released version (1.1.13)
+        // ###############################
+        let mut release_chain = ReleaseChain::new("1.1.13");
+
+        // "legacy" versions
+        let res = weights.versions_behind_factor(&s("1.0.12"), &release_chain);
+        assert_eq!(10, res);
+        let res = weights.versions_behind_factor(&s("1.0.4"), &release_chain);
+        assert_eq!(10, res);
+        let res = weights.versions_behind_factor(&s("1.0.1"), &release_chain);
+        assert_eq!(10, res);
+        let res = weights.versions_behind_factor(&s("0.1.12"), &release_chain);
+        assert_eq!(100, res);
+
+        let res = weights.versions_behind_factor(&s("1.1.12"), &release_chain);
+        assert_eq!(1, res);
+        let res = weights.versions_behind_factor(&s("1.1.11"), &release_chain);
+        assert_eq!(2, res);
+        let res = weights.versions_behind_factor(&s("1.1.9"), &release_chain);
+        assert_eq!(4, res);
+
+        // current version
+        let res = weights.versions_behind_factor(&s("1.1.13"), &release_chain);
+        assert_eq!(0, res);
+
+        // "ahead" versions
+        let res = weights.versions_behind_factor(&s("1.1.14"), &release_chain);
+        assert_eq!(0, res);
+        let res = weights.versions_behind_factor(&s("1.2.0"), &release_chain);
+        assert_eq!(0, res);
+        let res = weights.versions_behind_factor(&s("2.0.0"), &release_chain);
+        assert_eq!(0, res);
+
+        // cheating ahead:
+        let res = weights.versions_behind_factor(&s("1.1.15"), &release_chain);
+        assert_eq!(100, res);
+        let res = weights.versions_behind_factor(&s("1.3.0"), &release_chain);
+        assert_eq!(100, res);
+        let res = weights.versions_behind_factor(&s("3.0.0"), &release_chain);
+        assert_eq!(100, res);
+
+        // ###############################
+        // small patch release chain (1.1.13 => 1.1.14 => 1.1.15 => 1.1.16)
+        // ###############################
+        release_chain.push_new("1.1.14");
+        release_chain.push_new("1.1.15");
+        release_chain.push_new("1.1.16");
+
+        // "legacy" versions
+        let res = weights.versions_behind_factor(&s("1.0.12"), &release_chain);
+        assert_eq!(13, res);
+        let res = weights.versions_behind_factor(&s("1.0.4"), &release_chain);
+        assert_eq!(13, res);
+        let res = weights.versions_behind_factor(&s("1.0.1"), &release_chain);
+        assert_eq!(13, res);
+        let res = weights.versions_behind_factor(&s("0.1.12"), &release_chain);
+        assert_eq!(103, res);
+
+        let res = weights.versions_behind_factor(&s("1.1.12"), &release_chain);
+        assert_eq!(4, res);
+        let res = weights.versions_behind_factor(&s("1.1.11"), &release_chain);
+        assert_eq!(5, res);
+        let res = weights.versions_behind_factor(&s("1.1.9"), &release_chain);
+        assert_eq!(7, res);
+
+        // current version
+        let res = weights.versions_behind_factor(&s("1.1.16"), &release_chain);
+        assert_eq!(0, res);
+
+        // present in the chain
+        let res = weights.versions_behind_factor(&s("1.1.15"), &release_chain);
+        assert_eq!(1, res);
+        let res = weights.versions_behind_factor(&s("1.1.14"), &release_chain);
+        assert_eq!(2, res);
+        let res = weights.versions_behind_factor(&s("1.1.13"), &release_chain);
+        assert_eq!(3, res);
+
+        // "ahead" versions
+        let res = weights.versions_behind_factor(&s("1.1.17"), &release_chain);
+        assert_eq!(0, res);
+        let res = weights.versions_behind_factor(&s("1.2.0"), &release_chain);
+        assert_eq!(0, res);
+        let res = weights.versions_behind_factor(&s("2.0.0"), &release_chain);
+        assert_eq!(0, res);
+
+        // cheating ahead:
+        let res = weights.versions_behind_factor(&s("1.1.18"), &release_chain);
+        assert_eq!(100, res);
+        let res = weights.versions_behind_factor(&s("1.3.0"), &release_chain);
+        assert_eq!(100, res);
+        let res = weights.versions_behind_factor(&s("3.0.0"), &release_chain);
+        assert_eq!(100, res);
+
+        // ###############################
+        // small minor release chain (1.2.0 => 1.3.0 => 1.4.0)
+        // ###############################
+        let release_chain = ReleaseChain::new("1.2.0")
+            .with_release("1.3.0")
+            .with_release("1.4.0");
+
+        // "legacy" versions
+        let res = weights.versions_behind_factor(&s("1.0.12"), &release_chain);
+        assert_eq!(40, res);
+        let res = weights.versions_behind_factor(&s("1.0.4"), &release_chain);
+        assert_eq!(40, res);
+        let res = weights.versions_behind_factor(&s("1.0.1"), &release_chain);
+        assert_eq!(40, res);
+        let res = weights.versions_behind_factor(&s("0.1.12"), &release_chain);
+        assert_eq!(120, res);
+
+        let res = weights.versions_behind_factor(&s("1.1.12"), &release_chain);
+        assert_eq!(30, res);
+        let res = weights.versions_behind_factor(&s("1.1.11"), &release_chain);
+        assert_eq!(30, res);
+        let res = weights.versions_behind_factor(&s("1.1.9"), &release_chain);
+        assert_eq!(30, res);
+
+        // current version
+        let res = weights.versions_behind_factor(&s("1.4.0"), &release_chain);
+        assert_eq!(0, res);
+
+        // present in the chain
+        let res = weights.versions_behind_factor(&s("1.2.0"), &release_chain);
+        assert_eq!(20, res);
+        let res = weights.versions_behind_factor(&s("1.3.0"), &release_chain);
+        assert_eq!(10, res);
+
+        // weird in between
+        let res = weights.versions_behind_factor(&s("1.2.1"), &release_chain);
+        assert_eq!(20, res);
+        let res = weights.versions_behind_factor(&s("1.3.3"), &release_chain);
+        assert_eq!(10, res);
+
+        // "ahead" versions
+        let res = weights.versions_behind_factor(&s("1.4.1"), &release_chain);
+        assert_eq!(0, res);
+        let res = weights.versions_behind_factor(&s("1.5.0"), &release_chain);
+        assert_eq!(0, res);
+        let res = weights.versions_behind_factor(&s("2.0.0"), &release_chain);
+        assert_eq!(0, res);
+
+        // cheating ahead:
+        let res = weights.versions_behind_factor(&s("1.4.2"), &release_chain);
+        assert_eq!(100, res);
+        let res = weights.versions_behind_factor(&s("1.6.0"), &release_chain);
+        assert_eq!(100, res);
+        let res = weights.versions_behind_factor(&s("3.0.0"), &release_chain);
+        assert_eq!(100, res);
+
+        // ###############################
+        // mixed release chain (1.1.13 => 1.2.0 => 1.2.1 => 1.3.0 => 1.3.1 => 1.3.2 => 1.4.0)
+        // ###############################
+        let release_chain = ReleaseChain::new("1.1.13")
+            .with_release("1.2.0")
+            .with_release("1.2.1")
+            .with_release("1.3.0")
+            .with_release("1.3.1-importantpre")
+            .with_release("1.3.1")
+            .with_release("1.3.2")
+            .with_release("1.4.0");
+
+        // "legacy" versions
+        let res = weights.versions_behind_factor(&s("1.0.12"), &release_chain);
+        assert_eq!(44, res);
+        let res = weights.versions_behind_factor(&s("1.0.4"), &release_chain);
+        assert_eq!(44, res);
+        let res = weights.versions_behind_factor(&s("1.0.1"), &release_chain);
+        assert_eq!(44, res);
+        let res = weights.versions_behind_factor(&s("0.1.12"), &release_chain);
+        assert_eq!(134, res);
+
+        let res = weights.versions_behind_factor(&s("1.1.12"), &release_chain);
+        assert_eq!(35, res);
+        let res = weights.versions_behind_factor(&s("1.1.11"), &release_chain);
+        assert_eq!(36, res);
+        let res = weights.versions_behind_factor(&s("1.1.9"), &release_chain);
+        assert_eq!(38, res);
+
+        // current version
+        let res = weights.versions_behind_factor(&s("1.4.0"), &release_chain);
+        assert_eq!(0, res);
+
+        // present in the chain
+        let res = weights.versions_behind_factor(&s("1.1.13"), &release_chain);
+        assert_eq!(34, res);
+        let res = weights.versions_behind_factor(&s("1.2.0"), &release_chain);
+        assert_eq!(24, res);
+        let res = weights.versions_behind_factor(&s("1.2.1"), &release_chain);
+        assert_eq!(23, res);
+        let res = weights.versions_behind_factor(&s("1.3.0"), &release_chain);
+        assert_eq!(13, res);
+        let res = weights.versions_behind_factor(&s("1.3.1-importantpre"), &release_chain);
+        assert_eq!(12, res);
+        let res = weights.versions_behind_factor(&s("1.3.1"), &release_chain);
+        assert_eq!(11, res);
+        let res = weights.versions_behind_factor(&s("1.3.2"), &release_chain);
+        assert_eq!(10, res);
+
+        // weird in between
+        let res = weights.versions_behind_factor(&s("1.2.3"), &release_chain);
+        assert_eq!(21, res);
+        let res = weights.versions_behind_factor(&s("1.3.69"), &release_chain);
+        assert_eq!(10, res);
+
+        // "ahead" versions
+        let res = weights.versions_behind_factor(&s("1.4.1"), &release_chain);
+        assert_eq!(0, res);
+        let res = weights.versions_behind_factor(&s("1.5.0"), &release_chain);
+        assert_eq!(0, res);
+        let res = weights.versions_behind_factor(&s("2.0.0"), &release_chain);
+        assert_eq!(0, res);
+
+        // cheating ahead:
+        let res = weights.versions_behind_factor(&s("1.4.2"), &release_chain);
+        assert_eq!(100, res);
+        let res = weights.versions_behind_factor(&s("1.6.0"), &release_chain);
+        assert_eq!(100, res);
+        let res = weights.versions_behind_factor(&s("3.0.0"), &release_chain);
+        assert_eq!(100, res);
+
+        // ###############################
+        // skipped patch chain (1.1.13 => 1.2.0 => 1.2.1 => 1.2.4 => [1.3.0])
+        // ###############################
+        let mut release_chain = ReleaseChain::new("1.1.13")
+            .with_release("1.2.0")
+            .with_release("1.2.1")
+            .with_release("1.2.4");
+
+        // current
+        let res = weights.versions_behind_factor(&s("1.2.4"), &release_chain);
+        assert_eq!(0, res);
+
+        // on 'skipped' version
+        let res = weights.versions_behind_factor(&s("1.2.2"), &release_chain);
+        assert_eq!(2, res);
+
+        // on version before the skip
+        let res = weights.versions_behind_factor(&s("1.2.1"), &release_chain);
+        assert_eq!(3, res);
+
+        release_chain.push_new("1.3.0");
+        // current
+        let res = weights.versions_behind_factor(&s("1.3.0"), &release_chain);
+        assert_eq!(0, res);
+
+        // on 'skipped' version
+        let res = weights.versions_behind_factor(&s("1.2.2"), &release_chain);
+        assert_eq!(12, res);
+
+        // on version before the skip
+        let res = weights.versions_behind_factor(&s("1.2.1"), &release_chain);
+        assert_eq!(13, res);
+
+        // ###############################
+        // skipped minor chain (1.1.13 => 1.2.0 => 1.2.1 => 1.4.0 => [1.5.0])
+        // ###############################
+        let mut release_chain = ReleaseChain::new("1.1.13")
+            .with_release("1.2.0")
+            .with_release("1.2.1")
+            .with_release("1.4.0");
+
+        // current
+        let res = weights.versions_behind_factor(&s("1.4.0"), &release_chain);
+        assert_eq!(0, res);
+
+        // on 'skipped' version
+        let res = weights.versions_behind_factor(&s("1.3.0"), &release_chain);
+        assert_eq!(10, res);
+
+        // on version before the skip
+        let res = weights.versions_behind_factor(&s("1.2.1"), &release_chain);
+        assert_eq!(20, res);
+
+        let res = weights.versions_behind_factor(&s("1.2.0"), &release_chain);
+        assert_eq!(21, res);
+
+        release_chain.push_new("1.5.0");
+
+        // current
+        let res = weights.versions_behind_factor(&s("1.5.0"), &release_chain);
+        assert_eq!(0, res);
+
+        let res = weights.versions_behind_factor(&s("1.4.0"), &release_chain);
+        assert_eq!(10, res);
+
+        // on 'skipped' version
+        let res = weights.versions_behind_factor(&s("1.3.0"), &release_chain);
+        assert_eq!(20, res);
+
+        // on version before the skip
+        let res = weights.versions_behind_factor(&s("1.2.1"), &release_chain);
+        assert_eq!(30, res);
+
+        let res = weights.versions_behind_factor(&s("1.2.0"), &release_chain);
+        assert_eq!(31, res);
+    }
+}
@@ -275,6 +275,9 @@ pub enum MixnetContractError {

    #[error("the provided nym-node version is not a valid semver. got: {provided}")]
    InvalidNymNodeSemver { provided: String },
+
+    #[error("the provided nym-node version is not greater than the current one. got: {provided}. current: {current}")]
+    NonIncreasingSemver { provided: String, current: String },
 }

 impl MixnetContractError {
@@ -141,6 +141,7 @@ pub const NEW_INTERVAL_OPERATING_COST_RANGE_KEY: &str = "new_interval_operating_
 pub const NEW_VERSION_WEIGHTS_RANGE_KEY: &str = "new_version_weights_range";
 pub const NEW_VERSION_SCORE_FORMULA_PARAMS_KEY: &str = "new_version_score_formula_params";
 pub const NYM_NODE_CURRENT_SEMVER_KEY: &str = "new_current_semver";
+pub const NYM_NODE_CURRENT_SEMVER_ID_KEY: &str = "new_current_semver_id";

 pub const OLD_REWARDING_VALIDATOR_ADDRESS_KEY: &str = "old_rewarding_validator_address";
 pub const NEW_REWARDING_VALIDATOR_ADDRESS_KEY: &str = "new_rewarding_validator_address";
@@ -481,12 +482,6 @@ pub fn new_settings_update_event(update: &ContractStateParamsUpdate) -> Event {

    // check for config score params updates
    if let Some(config_score_update) = &update.config_score_params {
-        if let Some(current_nym_node_semver) = &config_score_update.current_nym_node_semver {
-            event.attributes.push(attr(
-                NYM_NODE_CURRENT_SEMVER_KEY,
-                current_nym_node_semver.to_string(),
-            ))
-        }
        if let Some(version_weights) = &config_score_update.version_weights {
            event.attributes.push(attr(
                NEW_VERSION_WEIGHTS_RANGE_KEY,
@@ -506,9 +501,10 @@ pub fn new_settings_update_event(update: &ContractStateParamsUpdate) -> Event {
    event
 }

-pub fn new_update_nym_node_semver_event(new_version: &str) -> Event {
+pub fn new_update_nym_node_semver_event(new_version: &str, new_id: u32) -> Event {
    Event::new(MixnetEventType::NymNodeSemverUpdate)
        .add_attribute(NYM_NODE_CURRENT_SEMVER_KEY, new_version)
+        .add_attribute(NYM_NODE_CURRENT_SEMVER_ID_KEY, new_id.to_string())
 }

 pub fn new_not_found_node_operator_rewarding_event(interval: Interval, node_id: NodeId) -> Event {
@@ -5,6 +5,7 @@
 #![warn(clippy::unwrap_used)]
 #![warn(clippy::todo)]

+mod config_score;
 pub mod constants;
 pub mod delegation;
 pub mod error;
@@ -21,6 +22,7 @@ pub mod rewarding;
 pub mod signing_types;
 pub mod types;

+pub use config_score::*;
 pub use constants::*;
 pub use contracts_common::types::*;
 pub use cosmwasm_std::{Addr, Coin, Decimal, Fraction};
@@ -25,6 +25,7 @@ use std::time::Duration;

 #[cfg(feature = "schema")]
 use crate::{
+    config_score::{CurrentNymNodeVersionResponse, NymNodeVersionHistoryResponse},
    delegation::{
        NodeDelegationResponse, PagedAllDelegationsResponse, PagedDelegatorDelegationsResponse,
        PagedNodeDelegationsResponse,
@@ -423,6 +424,20 @@ pub enum QueryMsg {
    #[cfg_attr(feature = "schema", returns(ContractState))]
    GetState {},

+    /// Get the current expected version of a Nym Node.
+    #[cfg_attr(feature = "schema", returns(CurrentNymNodeVersionResponse))]
+    GetCurrentNymNodeVersion {},
+
+    /// Get the version history of Nym Node.
+    #[cfg_attr(feature = "schema", returns(NymNodeVersionHistoryResponse))]
+    GetNymNodeVersionHistory {
+        /// Controls the maximum number of entries returned by the query. Note that too large values will be overwritten by a saner default.
+        limit: Option<u32>,
+
+        /// Pagination control for the values returned by the query. Note that the provided value itself will **not** be used for the response.
+        start_after: Option<u32>,
+    },
+
    /// Gets the current parameters used for reward calculation.
    #[cfg_attr(feature = "schema", returns(RewardingParams))]
    GetRewardingParams {},
@@ -848,11 +863,4 @@ pub enum QueryMsg {
 pub struct MigrateMsg {
    pub unsafe_skip_state_updates: Option<bool>,
    pub vesting_contract_address: Option<String>,
-    pub current_nym_node_semver: String,
-
-    #[serde(default)]
-    pub version_score_weights: OutdatedVersionWeights,
-
-    #[serde(default)]
-    pub version_score_params: VersionScoreFormulaParams,
 }
@@ -1,11 +1,12 @@
 // Copyright 2021-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0

+use crate::config_score::{ConfigScoreParams, OutdatedVersionWeights, VersionScoreFormulaParams};
 use crate::nym_node::Role;
 use contracts_common::Percent;
 use cosmwasm_schema::cw_serde;
+use cosmwasm_std::Coin;
 use cosmwasm_std::{Addr, Uint128};
-use cosmwasm_std::{Coin, Decimal};
 use std::fmt::{Display, Formatter};

 // type aliases for better reasoning about available data
@@ -221,96 +222,14 @@ impl OperatorsParamsUpdate {
    }
 }

-#[cw_serde]
-pub struct ConfigScoreParams {
-    /// Current version of the nym node that is going to be used for determining the version score of a node.
-    /// note: value stored here is pre-validated `semver::Version`
-    pub current_nym_node_semver: String,
-
-    /// Defines weights for calculating numbers of versions behind the current release.
-    pub version_weights: OutdatedVersionWeights,
-
-    /// Defines the parameters of the formula for calculating the version score
-    pub version_score_formula_params: VersionScoreFormulaParams,
-}
-
-impl ConfigScoreParams {
-    // SAFETY: the value stored in the contract is always valid
-    #[allow(clippy::unwrap_used)]
-    pub fn unchecked_nym_node_version(&self) -> semver::Version {
-        self.current_nym_node_semver.parse().unwrap()
-    }
-
-    pub fn versions_behind(&self, node_semver: &semver::Version) -> u32 {
-        let expected = self.unchecked_nym_node_version();
-
-        let major_diff = (node_semver.major as i64 - expected.major as i64).unsigned_abs() as u32;
-        let minor_diff = (node_semver.minor as i64 - expected.minor as i64).unsigned_abs() as u32;
-        let patch_diff = (node_semver.patch as i64 - expected.patch as i64).unsigned_abs() as u32;
-        let prerelease_diff = if node_semver.pre == expected.pre {
-            0
-        } else {
-            1
-        };
-
-        major_diff * self.version_weights.major
-            + minor_diff * self.version_weights.minor
-            + patch_diff * self.version_weights.patch
-            + prerelease_diff * self.version_weights.prerelease
-    }
-}
-
-/// Defines weights for calculating numbers of versions behind the current release.
-#[cw_serde]
-#[derive(Copy)]
-pub struct OutdatedVersionWeights {
-    pub major: u32,
-    pub minor: u32,
-    pub patch: u32,
-    pub prerelease: u32,
-}
-
-impl Default for OutdatedVersionWeights {
-    fn default() -> Self {
-        OutdatedVersionWeights {
-            major: 100,
-            minor: 10,
-            patch: 1,
-            prerelease: 1,
-        }
-    }
-}
-
-/// Given the formula of version_score = penalty ^ (num_versions_behind ^ penalty_scaling)
-/// define the relevant parameters
-#[cw_serde]
-#[derive(Copy)]
-pub struct VersionScoreFormulaParams {
-    pub penalty: Decimal,
-    pub penalty_scaling: Decimal,
-}
-
-impl Default for VersionScoreFormulaParams {
-    fn default() -> Self {
-        #[allow(clippy::unwrap_used)]
-        VersionScoreFormulaParams {
-            penalty: "0.8".parse().unwrap(),
-            penalty_scaling: "2.0".parse().unwrap(),
-        }
-    }
-}
-
 #[cw_serde]
 pub struct ConfigScoreParamsUpdate {
-    pub current_nym_node_semver: Option<String>,
    pub version_weights: Option<OutdatedVersionWeights>,
    pub version_score_formula_params: Option<VersionScoreFormulaParams>,
 }

 impl ConfigScoreParamsUpdate {
    pub fn contains_updates(&self) -> bool {
-        self.current_nym_node_semver.is_some()
-            || self.version_weights.is_some()
-            || self.version_score_formula_params.is_some()
+        self.version_weights.is_some() || self.version_score_formula_params.is_some()
    }
 }
@@ -0,0 +1,6 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+/**
+ * The vesting period.
+ */
+export type Period = "Before" | { "In": number } | "After";
@@ -23,6 +23,11 @@ impl SqliteEcashTicketbookManager {
        SqliteEcashTicketbookManager { connection_pool }
    }

+    /// Closes the connection pool.
+    pub async fn close(&self) {
+        self.connection_pool.close().await
+    }
+
    pub(crate) async fn cleanup_expired(&self, deadline: Date) -> Result<(), sqlx::Error> {
        sqlx::query!(
            "DELETE FROM ecash_ticketbook WHERE expiration_date <= ?",
@@ -43,6 +43,10 @@ impl Debug for EphemeralStorage {
 impl Storage for EphemeralStorage {
    type StorageError = StorageError;

+    async fn close(&self) {
+        // nothing to do here
+    }
+
    async fn cleanup_expired(&self) -> Result<(), Self::StorageError> {
        self.storage_manager.cleanup_expired().await;
        Ok(())
@@ -33,7 +33,10 @@ use nym_credentials::{
    IssuanceTicketBook, IssuedTicketBook,
 };
 use nym_ecash_time::{ecash_today, Date, EcashTime};
-use sqlx::ConnectOptions;
+use sqlx::{
+    sqlite::{SqliteAutoVacuum, SqliteSynchronous},
+    ConnectOptions,
+};
 use std::path::Path;
 use zeroize::Zeroizing;

@@ -56,6 +59,9 @@ impl PersistentStorage {
        );

        let opts = sqlx::sqlite::SqliteConnectOptions::new()
+            .journal_mode(sqlx::sqlite::SqliteJournalMode::Wal)
+            .synchronous(SqliteSynchronous::Normal)
+            .auto_vacuum(SqliteAutoVacuum::Incremental)
            .filename(database_path)
            .create_if_missing(true)
            .disable_statement_logging();
@@ -83,6 +89,10 @@ impl PersistentStorage {
 impl Storage for PersistentStorage {
    type StorageError = StorageError;

+    async fn close(&self) {
+        self.storage_manager.close().await
+    }
+
    /// remove all expired ticketbooks and expiration date signatures
    async fn cleanup_expired(&self) -> Result<(), Self::StorageError> {
        let ecash_yesterday = ecash_today().date().previous_day().unwrap();
@@ -22,6 +22,8 @@ use std::error::Error;
 pub trait Storage: Send + Sync {
    type StorageError: Error;

+    async fn close(&self);
+
    /// remove all expired ticketbooks and expiration date signatures
    async fn cleanup_expired(&self) -> Result<(), Self::StorageError>;

@@ -7,7 +7,7 @@ use crate::ClientBandwidth;
 use nym_credentials::ecash::utils::ecash_today;
 use nym_credentials_interface::Bandwidth;
 use nym_gateway_requests::ServerResponse;
-use nym_gateway_storage::Storage;
+use nym_gateway_storage::GatewayStorage;
 use si_scale::helpers::bibytes2;
 use time::OffsetDateTime;
 use tracing::*;
@@ -15,17 +15,17 @@ use tracing::*;
 const FREE_TESTNET_BANDWIDTH_VALUE: Bandwidth = Bandwidth::new_unchecked(64 * 1024 * 1024 * 1024); // 64GB

 #[derive(Clone)]
-pub struct BandwidthStorageManager<S> {
-    pub(crate) storage: S,
+pub struct BandwidthStorageManager {
+    pub(crate) storage: GatewayStorage,
    pub(crate) client_bandwidth: ClientBandwidth,
    pub(crate) client_id: i64,
    pub(crate) bandwidth_cfg: BandwidthFlushingBehaviourConfig,
    pub(crate) only_coconut_credentials: bool,
 }

-impl<S: Storage + Clone + 'static> BandwidthStorageManager<S> {
+impl BandwidthStorageManager {
    pub fn new(
-        storage: S,
+        storage: GatewayStorage,
        client_bandwidth: ClientBandwidth,
        client_id: i64,
        bandwidth_cfg: BandwidthFlushingBehaviourConfig,
@@ -13,7 +13,7 @@ use nym_api_requests::constants::MIN_BATCH_REDEMPTION_DELAY;
 use nym_api_requests::ecash::models::{BatchRedeemTicketsBody, VerifyEcashTicketBody};
 use nym_credentials_interface::Bandwidth;
 use nym_credentials_interface::{ClientTicket, TicketType};
-use nym_gateway_storage::Storage;
+use nym_validator_client::coconut::EcashApiError;
 use nym_validator_client::nym_api::EpochId;
 use nym_validator_client::nyxd::contract_traits::{
    EcashSigningClient, MultisigQueryClient, MultisigSigningClient, PagedMultisigQueryClient,
@@ -126,21 +126,18 @@ pub struct CredentialHandlerConfig {
    pub maximum_time_between_redemption: Duration,
 }

-pub(crate) struct CredentialHandler<St: Storage> {
+pub(crate) struct CredentialHandler {
    config: CredentialHandlerConfig,
    multisig_threshold: f32,
    ticket_receiver: UnboundedReceiver<ClientTicket>,
-    shared_state: SharedState<St>,
+    shared_state: SharedState,
    pending_tickets: Vec<PendingVerification>,
    pending_redemptions: Vec<PendingRedemptionVote>,
 }

-impl<St> CredentialHandler<St>
-where
-    St: Storage + Clone + 'static,
-{
+impl CredentialHandler {
    async fn rebuild_pending_tickets(
-        shared_state: &SharedState<St>,
+        shared_state: &SharedState,
    ) -> Result<Vec<PendingVerification>, EcashTicketError> {
        // 1. get all tickets that were not fully verified
        let unverified = shared_state.storage.get_all_unverified_tickets().await?;
@@ -188,7 +185,7 @@ where
    }

    async fn rebuild_pending_votes(
-        shared_state: &SharedState<St>,
+        shared_state: &SharedState,
    ) -> Result<Vec<PendingRedemptionVote>, EcashTicketError> {
        // 1. get all tickets that were not fully verified
        let unverified = shared_state.storage.get_all_unresolved_proposals().await?;
@@ -259,7 +256,7 @@ where
    pub(crate) async fn new(
        config: CredentialHandlerConfig,
        ticket_receiver: UnboundedReceiver<ClientTicket>,
-        shared_state: SharedState<St>,
+        shared_state: SharedState,
    ) -> Result<Self, Error> {
        let multisig_threshold = shared_state
            .nyxd_client
@@ -356,7 +353,9 @@ where
            }
            Err(err) => {
                error!("failed to send ticket {ticket_id} for verification to ecash signer '{client}': {err}. if we don't reach quorum, we'll retry later");
-                Ok(false)
+                Err(EcashTicketError::ApiFailure(EcashApiError::NymApi {
+                    source: err,
+                }))
            }
        }
    }
--- a/Show More
+++ b/Show More