I get that an NFT typically contains just a URL, because actual data is too expensive to store on the Enormous Work Disposal Unit(TM). Surely it's at least pos

I get that an NFT typically contains just a URL, because actual data is too expensive to store on the Enormous Work Disposal Unit(TM). Surely it's at least possible that accessing the actual asset behind the URL is authenticated by the same public key that verifies your "ownership"? And indeed for the rest of the concept of ownership of the asset to be taken seriously - i.e. I the buyer can tell the hoster "I have made a local copy, or just plain feel like burning stuff, delete your copy please". Or "please move the asset to this hosting service instead". Obviously that still has the same copying issues that the RIAA and MPAA and whoever else have failed to deal with so you probably aren't going to do any better. But, at least try?