d.id (formerly known as .bit) is a cross-chain Web3 decentralized identity protocol. It offers self-sovereign data containers, known as .bit accounts, that allow users to have ownership and control over their data. .bit accounts can be used in various applications and platforms, providing users with a unified username and the ability to transfer tokens and NFTs. The protocol also supports features such as .bit Alias for additional security and SubDIDs to enhance community engagement. The ecosystem includes registrars, data providers, marketplaces, and applications that integrate with .bit. The roadmap includes plans for multi-chain integration, multi-language support, and the establishment of a global network of registrars.