Data Protection & Verification Infrastructure

Cryptographic Foundation

The Work History Registry maintains data integrity through a continuous SHA-256 Hash Chain. Every professional event is cryptographically linked to the preceding event, creating an immutable audit trail that is tamper-evident at all levels.

Institutional Safety Standards

• End-to-End Verification: At no point is information stored as plain-text for public access. Verification is a multi-step process requiring a signed consent token, an organizational identifier, and the specific record hash.
• Signed At Origin (SAO): Each event is signed using the attestor's private key before it reaches the registry's storage layer. This ensures the digital signature is the definitive proof of work history.
• Zero Leakage Response: Our API surface is hardened to return only the specific, whitelisted fields requested. Non-verified or invalid tokens return a neutral error to prevent information leakage through response timing or error semantics.

API Security Gating

We enforce strict rate limiting on all verification endpoints. Each request is monitored to identify and block brute-force attempts.