I love this!
I've said for nearly four years now that I wanted the NFT crowd to build on Nostr. I wanted them to build their community using Nostr tools instead of using Twitter and Discord. Hell yea...
One catch with a Cashu NFT: the token is a bearer claim against a specific mint, and it gets redeemed at that same mint. The holder presents it, the mint verifies the signature, destroys the token, and pays the equivalent bitcoin out over Lightning.