The value of an NFT is in its provenance, just as with traditional works. If you forge a Mondrian, it won't be worth as much as an original Mondrian. It's even

The value of an NFT is in its provenance, just as with traditional works. If you forge a Mondrian, it won't be worth as much as an original Mondrian. It's even worse for NFTs since anyone can own the file data; the value of the NFT is almost purely its relationship to the artist.