The W3F Registrar (Registrar #0) on both Polkadot and Kusama was one of the first providers of on-chain identity registration (email, Twitter/X, or Matrix) in the Polkadot ecosystem. As there are now numerous registrars available on both Polkadot and Kusama, and in the spirit of decentralization, the Web3 Foundation will be shutting down the W3F Registrar on 1 April 2024. For future identity registration needs users can use: Polkadot registrars: https://wiki.polkadot.network/docs/learn-identity#registrars Kusama registrars: https://guide.kusama.network/docs/learn-identity/#registrars Or start their own registrar: https://wiki.polkadot.network/docs/learn-guides-identity#registrars https://medium.com/web3foundation/web3-foundation-will-shut-down-the-w3f-registrar-registrar-0-on-both-polkadot-and-kusama-1d03c5c258a0 #Web3Foundation #W3F #Polkadot