Sources — Physical Verification Reference

Normative and institutional references supporting structural definitions.

Identity, Verification and Trust Frameworks

W3C — Decentralized Identifiers (DID) Core Specification

W3C — Verifiable Credentials Data Model

NIST — Digital Identity Guidelines (SP 800-63B)

Biometric and Physical Presence Verification

ISO/IEC 30107-2:2017 — Biometric presentation attack detection — Part 2: Data formats

NIST — Face Recognition Vendor Test (FRVT)

Data Integrity and Provenance

W3C — PROV Data Model (Provenance)

NIST IR 8286 — Integrating Cybersecurity and Enterprise Risk Management (PDF)