An NFT has nothing to do with ownership of the property. But... if the property is ALSO sold along with the NFT, it will lose copyright protection at life + 70

An NFT has nothing to do with ownership of the property. But... if the property is ALSO sold along with the NFT, it will lose copyright protection at life + 70 years just like any other created art. The NFT will then refer to a public domain object, but it gives no power over it. As the laws currently stand, at least. I wonder if the NFT token itself loses copyright and becomes public domain at some point?