Hello, just landing on this thread.
I am interested in the ordinal protocol, not that for the jpgs, but for the notarization function, and maybe other interesting features it might enable.

I think the ordinal protocol should be somehow moved to upper levels on the blockchain layers, it should ideally moved to the L2 and integrated in the Taro protocol maybe, as the base layer space will soon be a too scarce resource to be used for this.

My question is: is there any solution o the "double spend" by the inscription write?
If I but a "bored ape" is there a way to prevent the issuer to mint 1,000 of such inscriptions and defraud the buyer? Each of them could have some invisible change so to trick any SHA256 checks on those.

On a more serious note: any notarization effort with the Ordinal protocol can only certify the existence of a certain documents in a given moment, and certify the possession of that document. It cannot assess the validity of such document of the existence of any other version of it. (I am thinking using the possession of a certain sat as a digital representation of the possession of something in the real world, such a car or an house).