Either you don't, and can't, or you build a special script with a revocation list run by trusted 'Oracles' who would essentially notarize a legal claim by the a

Either you don't, and can't, or you build a special script with a revocation list run by trusted 'Oracles' who would essentially notarize a legal claim by the artist into a blocklist of image hashes, or a whitelist of who can mint NFTs for those hashes. Those Oracles would ideally be known parties who could be sued under the laws of their jurisdiction for lying.