DID & VC DEVELOPMENT

Decentralized identity (DID) is a framework that gives individuals control over their digital identities using blockchain or distributed ledger technology. Unlike traditional centralized systems, DIDs allow users to create and manage their own identifiers without relying on a central authority. Verifiable Credentials (VCs) are digital, cryptographically signed documents that prove claims about a user (e.g., age, qualifications) in a privacy-preserving way. VCs are issued, held, and verified within the DID ecosystem, enabling secure, selective disclosure of information. Applications include secure logins, KYC processes, and access control.

Example: A university issues a Verifiable Credential to a graduate, stored on a blockchain like Ethereum. The graduate’s DID is linked to the credential, which confirms their degree. When applying for a job, the graduate shares only the necessary proof (e.g., "has a degree") with the employer via a zero-knowledge proof, without revealing other personal details. The employer verifies the credential against the blockchain, ensuring authenticity.