Our one page smart contract sits on Polygon, totally self-sufficient. It contains the metadata and artwork and reveal mechanism, on-chain. It does not require anything else. As far as punkPOTUS NFTs are concerned, it's the single source of truth - https://polygonscan.com/address/0x0892B028c28E0106c6Ee23150a0e8AeB004a82e8#code