On Etherium.org it states with regard to NFTs...
You can easily prove you're the creator.
How exactly can someone prove they were the creator of an NFT?
I am not concerned with the real world identity of the creator. Only that someone with a certain wallet address (whoever they may be) was the actual creator.
I am not concerned with the case where someone else claims to be the creator of something I made. But rather the opposite case of someone else claiming I made something that they actually made.