# 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/>


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