> With NFTs you just do it.
No, you can't. Anybody can go right now and mint their own series of BAYC or any artwork they want. The blockchain will allow it. It won't even care if you mint it against the exact same data, because as far as I know nothing in the blockchain cares that there's more than one NFT pointing to the same URL, or pointing to an URL that resolves to content bit-by-bit identical to something somebody else already minted.
The only guarantee you can have is an extremely weak one, in the form of "this precise collection, with this precise unique ID is set in stone". That's not going to stop anybody from creating another one 5 minutes later.