Sources — Verify Physical
Institutional and technical reference points.
Physical Verification and Measurement
NIST SP 800-63B — Digital Identity Guidelines (Authentication & Presence)
NIST SP 800-53 — Security and Privacy Controls (Physical Access Control)
Verification and Evidence Integrity
IETF RFC 3161 — Time-Stamp Protocol (TSP)
W3C — Verifiable Credentials Data Model
Observation and Physical Systems Context
NIST SP 800-160 — Systems Security Engineering (Physical System Context)
W3C — PROV Overview (Data Provenance Model)