The authenticity will shift to the NFT. The NFT allows the owner to enjoy the art in virtual spaces and grants the owner the right to reproduce the image in the physical world for personal use. If you want to sell the art piece, you simply sell the NFT.
Maybe I missed something or I'm not understanding it correctly. Can you elaborate on this part? Are you saying, going forward you'll only release pieces as NFTs and it would be up to the NFT holder to actually print them or will cryptoart.com still do the printing if the NFT owner wanted it printed?