Confidential by design
GRIN is confidential digital cash — every amount is cryptographically hidden. Like handing someone cash, what you send stays between the two of you.
Free & open source
Send grin like a text.
Goblin is a private wallet for GRIN. Pay a username and the payment is delivered as an end-to-end encrypted message over nostr, through the Nym mixnet. No files to swap. No need to both be online.
Get the builds
App StoreComing soon
SOON
Google PlayComing soon
SOON
Linux · macOS · Windows · Android. Apache-2.0, sha256 checksums on every build.
How a payment travels
Payments are NIP-44 encrypted; relays only ever see ciphertext — never the amount, sender, or recipient. Privacy is Mimblewimble on-chain + Nym on the wire.
Youtype an amount, pick a name
Gift wrapslatepack sealed, NIP-17
Nym mixnet5-hop, linked in-process
themunwrapped, verified, applied
Private by construction
Pay anyone instantly and directly — an addressless, confidential chain underneath.
Pay a username
Handles are NIP-05 identities at goblin.st. Pay
alice — or any raw npub on nostr.
Sealed delivery
The slatepack travels as a NIP-17 gift-wrapped DM (kind 1059) and is applied automatically by the recipient's wallet — no files, no meetups.
Mixnet, built in
Your payments and identity — nostr messages, names, price and avatars — ride the Nym mixnet, with the SDK linked right into the app. Five hops of cover traffic hide who pays whom. (The grin node connects directly — public chain data, not tied to you.) Nothing to set up.
Separate from your wallet key
Your nostr payment key is deliberately separate from your funds. Rotate it any time to stay unlinkable — your grin never moves.
Your numbers, your way
Off by default. Opt into a world currency, Bitcoin, or sats and the rate is fetched over the mixnet — nothing leaves your device otherwise.
Be yourself.
Claim a free handle in the app and friends can pay you by name. Your handle resolves through the open goblin.st identity service — standard NIP-05, one name per key, yours until you release it.
Or remain anonymous and reset your identity whenever you want.
$ curl 'https://goblin.st/.well-known/nostr.json?name=alice'
{
"names": {
"alice": "7d2f19c0…a4c41a"
}
}
{
"names": {
"alice": "7d2f19c0…a4c41a"
}
}
Downloads
Fresh from the forge. Verify with the checksums file — every build ships one.
latest release
Download on theApp Store
SOON
Get it onGoogle Play
SOON
Store listings are on the way. Until then, grab the APK on the left — it's the same wallet.