Trust Triangle: Holder-Controlled Verifiable Digital Identity

A new article explains the trust triangle—an issuer–holder–verifier model—and why it matters for digital identity and privacy. The trust triangle clarifies how identity data moves, who controls it, and what each party can see when verifiable digital credentials are used. The issuer creates credentials after checking evidence and signing what’s verifiable. The holder (the subject) stores the credential in a wallet/device and decides if, when, and what to reveal. The verifier checks validity and the claim needed for a transaction (e.g., age verification) and ideally does not need to contact the issuer. Key shift: when verification happens without querying a centralized issuer database, credentials themselves become the trust anchor. This reduces issuer-side logging and dependency on issuer systems. The article also highlights selective disclosure: holders can present only the specific claim required (e.g., “over 21”) instead of full personal data, using cryptographic proof. Why it matters for systems design and policy: procurement and governance can either reinforce centralized data collection or enable holder control, data minimization, and privacy by design. The piece positions verifiable digital credentials as infrastructure, not just documents, and frames “trust triangle” thinking as a foundation for interoperability and citizen-centric services. Projects noted: the article promotes SpruceID as building government credential systems around holder control and privacy by design.