2ro
1e55ef5dfb
build133 shipped the Tor transport but two delivery bugs remained; this fixes both so payments resolve through confirmations again. - Drop the pinned relay .onion. It was a single fragile hidden-service hop shared by every wallet; under load it flapped (WebSocket 1006), and when it dropped mid-handshake a payment stalled after the first gift-wrap -- you'd get the incoming alert but the money never confirmed. Every relay is now reached over the Tor exit to its clearnet host: your IP still stays hidden from the relay, with no fragile onion hop to wedge. The has-onion gate that rejected an onion-less relay list is removed, and the pinned candidate pool carries no onion/exit fields. - Tor-friendly relay set. Defaults/fallbacks had included relays that refuse Tor-exit connections (damus, nos.lol); wallets that fell back to them couldn't send at all. Defaults and the pinned pool are now relay.floonet.dev, relay.0xchat.com, offchain.pub. - confirm-before-sent no longer false-fails across a relay reconnect (a confirmed-received wrap is treated as sent-pending instead of re-dispatched, which had duplicated wraps and hung the spinner); a v3 gift-wrap unwrap failure no longer silently drops the message. Validated over Tor with two funded wallets on two independent mainnet nodes: connect in seconds, send to finalize in 8s.
Goblin
Goblin is a private, pay-by-username wallet for GRIN ツ — confidential digital cash on Mimblewimble, with no amounts or addresses on the chain.
Instead of passing slatepack files back and forth, you pay a username (or an npub) and the payment is delivered for you as an end-to-end encrypted message over nostr, routed through Tor. Relays only ever see ciphertext — never the amount, the sender, or the recipient. Tor hides your IP from the relay; the relay and encryption hide the rest — content, sender, timing.
Goblin is a fork of the Grim egui GRIN wallet: it keeps Grim's full GRIN node/wallet engine and layers a Nostr-native, mobile-first payments experience on top.
What it does
- Send to people — pay a
usernameornpub; the GRIN slatepack travels as a NIP-17 gift-wrapped DM (kind 1059) over Tor and is applied automatically by the recipient's wallet. No files to swap, no need to both be online at once. - Manual slatepacks too — when you need to pay or get paid without a handle, Settings → Wallet → Slatepacks exposes the classic by-hand flow: create a slatepack to send, or paste one to receive, finalize, or pay.
- In-app identity — a nostr payment key that is deliberately not part of your seed, so you can rotate it any time to stay unlinkable without touching your funds. An optional human-readable
namecomes from the goblin.st identity service. - Private by construction — GRIN's address-less, confidential chain; your payments and identity (nostr relays, NIP-05 lookups, price) are routed through Tor, so who-pays-whom never touches the clear net. The GRIN node connection — block sync and broadcasting your transaction — is direct: public chain data, the same for everyone, and not tied to your identity. Keys, names and history stay on your device.
- Configurable amount pairing — show balances against a world currency, Bitcoin, or sats (rates fetched over Tor), or turn the preview off.
- Cross-platform — Linux, macOS, Windows, Android, built in pure Rust on egui.
How a payment travels
you ──slatepack──▶ NIP-17 gift wrap (kind 1059, NIP-44 encrypted)
│
Tor
│
┌─────────────┴─────────────┐
your relays recipient's DM relays (kind 10050)
└─────────────┬─────────────┘
▼
recipient ◀──unwrap, verify seal author, apply slatepack
The wrap is NIP-44-encrypted, and delivery uses the recipient's DM relay list (kind 10050). Tor hides your IP from the relay; the relay and the encryption above hide the rest — content, sender, timing.
Both parties only need one relay in common. The default set is the Goblin relay plus large public relays (relay.damus.io, nos.lol), and the set is editable in Settings → Relays.
Build
Desktop (Linux / macOS / Windows)
Goblin links Tor in-process via arti — the wallet is a single self-contained binary, no sidecar, nothing separate to install:
git submodule update --init --recursive
cargo build --release
./target/release/goblin
Goblin's identity and payment traffic — nostr relays, NIP-05 lookups and price fetches — rides Tor: the money-path relay is dialed directly at its pinned .onion address, and any relay without one (e.g. a recipient's arbitrary DM relay) is reached over a Tor exit to its clearnet host. The GRIN node connection (block sync and transaction broadcast) is not routed through Tor — it connects directly, as it carries only public chain data that isn't linked to your wallet.
Android
Install the Android SDK / NDK, then from the repo root:
./scripts/android.sh build|release v7|v8|x86
v7/v8/x86 is the device CPU architecture for build; for release pass a version in major.minor.patch form.
Identity service (goblin-nip05d)
The optional name service lives in goblin-nip05d/ (axum + SQLite) and is deployed at goblin.st. It implements NIP-05 resolution, NIP-98-authenticated registration and release (names are never transferred — on a key rotation you release the old name and re-register, or import your existing identity). The wallet is fully usable — and fully anonymous — without it. Avatars aren't stored or served — clients render them from the pubkey (an npub gradient with the username's first letter, else the Grin mark).
License
Apache License v2.0.
Credits
🤖 Built with AI pair-programming assistance (Claude)
The underlying cross-platform GRIN wallet engine is the upstream Grim project.