NUT-27: mint list backups on nostr for wallets #267

Merged

callebtc merged 9 commits from nostr-mint-backups into main

2026-01-11 10:08:00 +00:00

callebtc commented

2025-06-10 12:03:21 +00:00

(Migrated from github.com)

Spec for backing up a wallet's mint list on nostr as a replaceable event.

Implementations:

cashu.me
Numo PoS
cdk https://github.com/cashubtc/cdk/pull/1459

Spec for backing up a wallet's mint list on nostr as a replaceable event. Implementations: - cashu.me - Numo PoS - [ ] cdk https://github.com/cashubtc/cdk/pull/1459

🚀 1

thesimplekid (Migrated from github.com) reviewed

2025-06-12 09:50:49 +00:00

xx.md

I've lost track of nostr, but I think ephemeral and replaceable events are different. In the first sentence it says ephemeral but in the description it says replaceable

I've lost track of nostr, but I think ephemeral and replaceable events are different. In the first sentence it says `ephemeral` but in the description it says `replaceable`

callebtc (Migrated from github.com) reviewed

2025-06-12 10:01:08 +00:00

xx.md

good point. nostr specs have also renamed parameterized-replaceable events to "addressable" events, which I have fixed

Kelbie commented

2025-06-13 11:24:25 +00:00

(Migrated from github.com)

This looks good, thoughts on having a way to blacklist keysets or some other way to skip going through keysets which we know don't have any unspent proofs? I notice with cashu .me if you try to restore on testnut mint with rotating keysets it rate limits you.

This might not be a problem in practice with real mints. I figured I'd mention it anyway.

callebtc commented

2025-06-14 11:20:08 +00:00

(Migrated from github.com)

This looks good, thoughts on having a way to blacklist keysets or some other way to skip going through keysets which we know don't have any unspent proofs? I notice with cashu .me if you try to restore on testnut mint with rotating keysets it rate limits you.

This might not be a problem in practice with real mints. I figured I'd mention it anyway.

iiuc, question about the restore strategy doesn't seem to be related to this PR. you could store much more wallet state on nostr like the keysets used etc (but that's out of scope for here).

> This looks good, thoughts on having a way to blacklist keysets or some other way to skip going through keysets which we know don't have any unspent proofs? I notice with cashu .me if you try to restore on testnut mint with rotating keysets it rate limits you. > > This might not be a problem in practice with real mints. I figured I'd mention it anyway. iiuc, question about the restore strategy doesn't seem to be related to this PR. you could store much more wallet state on nostr like the keysets used etc (but that's out of scope for here).

👍 1

Kelbie commented

2025-06-14 11:52:38 +00:00

(Migrated from github.com)

You are right, it is a bit out of scope for this PR. Everything else looks good! 💯