Introducing Nostringer - unlinkable ring signatures (SAG) for Nostr pubkeys.
Instead of doing some Ghibli stuff I implemented a prototype of unlinkable ring signatures for Nostr.
It's using Monero style Spontaneous Anonymous Group signatures (SAG).
What does it enable ?
Ring signatures allow multiple members of a group to sign a message without revealing which member actually signed it.
I explored this after chatting with LeoWandersleb (nprofile…nqad) who wants to use this concept for WalletScrutiny. Basically his idea would be to let users write reviews as accredited wallet developers. Because of the competition between wallets it's better to not disclose who posted a review.
It would be sufficient to know that it was posted from someone belonging to a group of accredited developers.
Checkout the demo and repo in the links below.
Live demo: https://nostringer.starknetonbitcoin.com
Repo: https://github.com/AbdelStark/nostringer
Abdel / A₿del ∞/21M 🐺 - 🐱
npub1hr…w2e29
2025-03-27 15:29:08
Author Public Key
npub1hr6v96g0phtxwys4x0tm3khawuuykz6s28uzwtj5j0zc7lunu99snw2e29Published at
2025-03-27 15:29:08Event JSON
{
"id": "684080409e29cff6012fe516a7cd0d5de8cbb2e13444da0a1e23d3801bb62ed8",
"pubkey": "b8f4c2e90f0dd667121533d7b8dafd77384b0b5051f8272e5493c58f7f93e14b",
"created_at": 1743089348,
"kind": 1,
"tags": [
[
"p",
"46fcbe3065eaf1ae7811465924e48923363ff3f526bd6f73d7c184b16bd8ce4d",
"wss://nostr.mom/",
"mention"
]
],
"content": "Introducing Nostringer - unlinkable ring signatures (SAG) for Nostr pubkeys.\nInstead of doing some Ghibli stuff I implemented a prototype of unlinkable ring signatures for Nostr.\nIt's using Monero style Spontaneous Anonymous Group signatures (SAG).\nWhat does it enable ?\nRing signatures allow multiple members of a group to sign a message without revealing which member actually signed it.\nI explored this after chatting with nostr:nprofile1qqsydl97xpj74udw0qg5vkfyujyjxd3l706jd0t0w0turp93d0vvungpzpmhxue69uhkummnw3ezumt0d5hszythwden5te0dehhxarj9emkjmn99ujcnqad who wants to use this concept for WalletScrutiny. Basically his idea would be to let users write reviews as accredited wallet developers. Because of the competition between wallets it's better to not disclose who posted a review.\nIt would be sufficient to know that it was posted from someone belonging to a group of accredited developers.\nCheckout the demo and repo in the links below.\n\n\nLive demo: https://nostringer.starknetonbitcoin.com\n\nRepo: https://github.com/AbdelStark/nostringer\nhttps://m.primal.net/PvLL.mov",
"sig": "1d2cf862e46455b7dcdea15a92153300b998ce7fe6192a6081f67e4c74b70d1b6b44901bad21e220e3bea1c7bec216fd521dc77a7138c25c692ed867a09e4b1c"
}