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"Introducing Proof of Place, an out–of-band process where an oracle, such as nostr:npub1864jglrrhv6alguwql9pqtmd5296nww5dpcewapmmcazk8vq4mks0tt2tq, would mail - yes mail a physical letter - a shared secret to the physical location being claimed in cyberspace. This shared secret would be locked to the public key (npub) making the claim, which, if unlocked, would prove that the associated private key (nsec) has physical access to the location in meatspace.

One way of doing this would be to mint a 1 sat cashu ecash token locked to the npub of the claimant and mail it to them. If they are able to redeem the token then they have cryptographically proven that they have physical access to the location."

Cc nostr:npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg

nostr:note1fl6afq8e2cw44gd66sagws0j5yjs3smjgrxex9ef0eguuy9mgxms7fznlx

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Discussion

Seems “blockchainey” to add a token to something that doesn’t need it.

If there is benefit to the payment, like nostr:npub1h0uj825jgcr9lzxyp37ehasuenq070707pj63je07n8mkcsg3u0qnsrwx8 is doing, then it makes sense.

Otherwise, just do a Nostr key verification scheme.

Yep, could def do that. Much to think about implementation wise.

Benefits of Cashu are client support and user familiarity with tokens/invoices etc.

Could of course be handled more natively.

I like how it sounds but what would be a use case?

Did you read the article?

My bad... completely missed the links at the bottom... 😆