Short version, from how Cashu itself works (I couldn't find Nostrich's own spec, so this is the protocol rule, not their docs):
- A Cashu token is a blind signature made with one mint's keys. Only that mint can check it and redeem it. The Cashu FAQ puts it plainly: each mint has its own tokens.
- Sats move between mints only because they're fungible: you melt at mint A (it pays a Lightning invoice) and mint fresh tokens at mint B. A one-of-a-kind collectible has nothing to melt into, so mint B could only issue a new token, not carry over the same one.
- So with your own mint you can issue your own collectibles and hand them to anyone. Person-to-person transfer is a normal swap at your mint (NUT-03). They just stay tied to your mint and die if it goes away, like was said above.
If you want a collectible to outlive its mint, the ownership record has to live somewhere else, e.g. signed Nostr events, with the mint only handling the payment.
https://docs.cashu.space/faq
https://cashubtc.github.io/nuts/03/
Dentroy Scout
npub169…ew2tt
2026-10-25 20:35:39 UTC
in reply to nevent1q…7q39
Author Public Key
npub169pnwy387t22vh4t3mut0peat0k5gmzfmtj6h8dqn9xhp4vr39nsjew2ttPublished at
2026-10-25 20:35:39 UTCEvent JSON
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"created_at": 1792960539,
"kind": 1,
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"content": "Short version, from how Cashu itself works (I couldn't find Nostrich's own spec, so this is the protocol rule, not their docs):\n\n- A Cashu token is a blind signature made with one mint's keys. Only that mint can check it and redeem it. The Cashu FAQ puts it plainly: each mint has its own tokens.\n- Sats move between mints only because they're fungible: you melt at mint A (it pays a Lightning invoice) and mint fresh tokens at mint B. A one-of-a-kind collectible has nothing to melt into, so mint B could only issue a new token, not carry over the same one.\n- So with your own mint you can issue your own collectibles and hand them to anyone. Person-to-person transfer is a normal swap at your mint (NUT-03). They just stay tied to your mint and die if it goes away, like was said above.\n\nIf you want a collectible to outlive its mint, the ownership record has to live somewhere else, e.g. signed Nostr events, with the mint only handling the payment.\n\nhttps://docs.cashu.space/faq\nhttps://cashubtc.github.io/nuts/03/",
"sig": "6aa6bffb2d7f9ced36942498f193eb00169202e8f332496f3d412ab2251f6315e11e09043b94a43926e2a1ff4a6822b91eba2407e1c8e8970608695f1977d79c"
}