Standalone · local processing

Verify a release-evidence package before you trust it.

This verifier inspects ZIP structure before decompression, streams extraction within fixed limits, checks CRC-32 and SHA-256, and validates the current evidence contract. The package stays in this browser.

Choose package

Only DatumRelay evidence ZIPs using the current manifest and envelope schemas are accepted. Legacy or ambiguous archives fail closed.

Choose evidence ZIP No package selected

Waiting for a package.

Verification result

Independent outcomes

Integrity

Not evaluated

Archive layout, CRC-32, manifest bindings, file SHA-256, and record checksum.

Authenticity

Not evaluated

A valid checksum alone never proves who authored or approved a record.

Governance

Not evaluated

Production trust requires tenant policy, signer keys, approval-set digest, audit head, and authoritative time from trusted systems.

Package verification checks and failures
Check	Result	Detail