I think Plantoid, I started it without knowing that I was building a protocol, but it was clearly protocol art. I just didn't have the conceptual tools yet.
Primavera De Filippi, Strange Rules: Protocol Art at the Venice Biennale
So every Plantoid has a skill set and then uses those skills to generate an artwork based on the interaction with the public. And this is minted as an NFT, which becomes the digital seed of the Plantoid, and then is given back to the human pollinator that has fed it.
Primavera De Filippi, Strange Rules: Protocol Art at the Venice Biennale