"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