# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2021-07-31 19:48:16 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1421558351213776905) In reply to: [@keefmoon](http://twitter.com/keefmoon/status/1421558349934510086) An NFT is like cryptographic proof of that ownership. I do think basing it on URLs was a mistake though.