Phase B1 · bounded local demonstration

DAR verification, without the false positives.

This page separately evaluates input, schema, content integrity, mathematical signature validity, issuer recognition, and signing-key validity. It makes no network requests and stores no receipt or private key.

Demonstration only. This is not government-certified, is not approved for sensitive information, and does not prove that an underlying action was lawful, authorized, accurate, or successful. It verifies only the evidence and trust properties shown below.

Receipt input

Paste demonstration receipt JSON

Maximum 16 KiB. Strict schema; unknown and prohibited fields fail. Remote URL retrieval is intentionally unsupported.

Or select a local JSON file

Verification result

Invalid input — no receipt provided

Invalid inputStructure validContent integrity validSignature validIssuer recognizedKey validVerification incompleteVerification failedFully verified

“Fully verified” appears only when structure, integrity, signature, registered issuer, and active key-at-event-time checks all pass. Current revoked, compromised, or expired status prevents full verification.