OneID

OneID is a multichain identity scheme from Ninety Eight that maps one ID to a user's addresses on more than 150 chains and creates a unified identity record at registration. More than 50 DID namespaces are supported, including .c98, .btc and .crypto, so addresses on different chains can be bound to a single readable name.

The registry stores name, chain and address as a triple and returns the address for whichever chain is requested, so a sender does not need to know which network the recipient uses; developers connect through SDK and API, and a MetaMask Snap resolves names inside the wallet. Documentation records more than 100,000 registered IDs and over 80,000 holders, with integrations at Coin98, DODO, FoxWallet, Rubic, Krystal and Nabox routing lookups by chain. Renewal and transfer of a name happen on-chain, and an expired name enters a retention window so it cannot be grabbed and resold immediately; organisations can register suffixes in bulk for sub-accounts, separating addresses used for treasury, support and other functions.