Both IPFS and onchain. Most of AB stuff is onchain, as is CryptoPunks, most stuff on tezos is hosted elsewhere, and there's a great service that popped up that

Both IPFS and onchain. Most of AB stuff is onchain, as is CryptoPunks, most stuff on tezos is hosted elsewhere, and there's a great service that popped up that stores your art in case the chain or service folds. That's the type of new useful business in the space.