OpenChainGraph Suite · ART-123 · wave 23

C2PA Content Credential Manifest Validator

Validate a decoded C2PA 2.x manifest: claim well-formedness (claim_generator, format, instanceID), hard-binding hash assertion (c2pa.hash.data or c2pa.hash.bmff), and claim-signature reference. Agent decodes the JUMBF/binary manifest (e.g. via c2patool) and passes the JSON; this tool validates deterministically. Zero network.

C2PA 2.xEU AI Act Art.50W3C VC §13.11Zero PIIClient-side only
🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Scope
Validates extracted C2PA manifest JSON: claim well-formedness, hard-binding assertion presence, and claim signature reference. Part of the content-credential-verification chain. Agent-callable, zero network.
Presets
Inputs
Result
Execution Hash & §4 Artifact
SHA-256 execution hash (JCS canonical — RFC 8785):

      
Chain Handoff → art-124
Validated manifest structure feeds art-124 Content Credential Signature Verifier — pass execution_hash as parent_hashes input.