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2024-07-04 17:17:42

keychat on Nostr: Maybe we should write an NIP-1840: using cashu sat as a note stamp. The first stamp ...

Maybe we should write an NIP-1840: using cashu sat as a note stamp.

The first stamp was issued in 1840.

https://en.m.wikipedia.org/wiki/Penny_Black
Author Public Key
npub1h0uj825jgcr9lzxyp37ehasuenq070707pj63je07n8mkcsg3u0qnsrwx8