Ha, nice. Problem: art receives value wrt the artwork, not the canvas, so the screenshot-meme wins. (Unless the cultural prestige lies in the underlaying technology itself, in which case the piece of art is the blockchain-implementation, not embedded content)
If an artist signs an NFT or Colored Coin with a keypair that is associated with their public identity, shouldn't that be analogous to an autograph? If a physical, signed artistic work has more value than an unsigned work, does that mean that if you take the physical artistic work out of the equation you're left with the value of the signature? It's a funny question I guess. Like imagine people collecting PGP autographs.
Maybe art has some intrinsic value, but I think a large part of the "value" of an art piece is associated with the cultural relevance of the piece. It would follow that if you can associate a transaction output with some cultural relevance in the same sense that traditional artwork does, then it could have value, albeit not much.
> Problem: art receives value wrt the artwork, not the canvas, so the screenshot-meme wins.
This assumes that an original painting and a perfect replica of it have equal value. That might be the case if you don't know which is the original, but in the case of the Mona Lisa - and in the case of the NFT - you almost certainly can figure that out.