DID (Decentralized Identifier) is a type of decentralized digital identity that allows entities, such as individuals, organizations, or devices, to have a unique and self-controlled identity in a decentralized environment.

DID (Decentralized Identifier) is an important component in the decentralized identity ecosystem (self-sovereign identity). DIDs allow entities to have a unique, permanent, and verifiable digital identity without relying on a centralized authority or third party.

Each DID consists of a unique string that can be used to identify an entity globally. The DID does not contain any personal information or sensitive data, but rather only serves as a unique identifier. The data associated with the identity is stored in a decentralized manner in the DID Document, which can be accessed and verified by authorized parties.

DID is designed to give identity owners full control over their personal data and information. DID owners can determine who has access to their identity information and in what context the information can be accessed.

With DID, entities can prove their identity in a secure and verified manner in a decentralized environment, such as blockchain or other decentralized identity systems, without relying on centralized authorities or third parties.