This has to be elephant in in room right? There is so much cryptographic potential and none it is realized by most NFTs currently sold. Signing an http link to

This has to be elephant in in room right? There is so much cryptographic potential and none it is realized by most NFTs currently sold. Signing an http link to an existing .jpeg has to be the least imaginative way to implement this concept. How about: Sign the image and generate a MAC. Then use steganography to include that information in the file. For the NFT sign create a certificate with the same key and include the MAC information. Publish that together with an IPFS link to a blockchain. Then we can have discussions about IP law, art and what art ownership means.