Blockchain as a Trust Layer for Identity (How public ledgers enable verifiable identity.)

Public blockchains serve as immutable ledgers where verifiable credentials (VCs) and decentralized identifiers (DIDs) can be registered, anchored, or referenced. This allows verifiers to validate identity data without depending on a single issuing authority.

Key Benefits:

• Decentralized Trust – Eliminates reliance on centralized databases.

• Auditability & Transparency – Credential issuance and verification events can be tracked publicly.

• Tamper-Proof Storage – Records are immutable and cryptographically secured.

Public blockchains like Cardano, Ethereum, and Polygon are increasingly used to register DIDs, anchor VCs, or interact with smart contracts for identity verification.

🔗 Sources:

• World Economic Forum – Blockchain Identity: https://www.weforum.org/

• W3C DID Specification: https://www.w3.org/TR/did-core/