.bayc is a Premium decentralized identifier (DID) launched by KEY3.id, a distributed, open, and extensible naming system with the features of Assets as DID, Available for Transferring Tokens. The Bored Ape (BAYC) NFT holders can claim the corresponding numbered DID, e.g. 0000.bayc, for free at KEY3.id. The .bayc DID is bound one-to-one to the BAYC NFT, and there are only 10,000 DIDs available to claim.