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C2PA Content Credentials Provenance Verifier
x402
C2PA Content Credentials Provenance Verifier is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).
Verifies the cryptographic C2PA provenance manifest embedded in a media file, returning a verdict (authentic-provenance, untrusted-signer, tampered, or unsigned) plus distilled signed claims including signer, creator tool, generative-AI flag, edit actions, and ingredient graph.
Price / call$0.02
Success—
StatusUnknown
How this service works
Cryptographic C2PA / Content-Credentials verdict for a media file. Parses the embedded manifest, verifies the signature chain and asset hash-binding against the C2PA production + Interim trust lists, and returns a go/no-go verdict (authentic-provenance, untrusted-signer, tampered, unsigned) with the distilled signed claims. Cryptographic provenance, not a deepfake detector.
Output
Returns a go/no-go verdict string (authentic-provenance, untrusted-signer, tampered, or unsigned) plus distilled signed claims extracted from the verified C2PA manifest: the signer identity, creator tool name, a boolean generative-AI source flag, list of recorded edit actions, and the ingredient/provenance graph showing the asset's history.
Example use cases
News image authenticity check
“I have a JPEG photo from a news wire that claims to be camera-original — can you verify its C2PA provenance manifest and tell me if the signer is on the official trust list and whether any edits were made after capture?”
AI-generated image disclosure audit
“I need to check this PNG we received from a vendor — run C2PA provenance verification on it and flag whether the generative-AI source bit is set in the signed claims, and who the creator tool is.”
Video tampering detection via manifest
“We have an MP4 file and need to know if its C2PA content credentials show it has been tampered with since signing — can you verify the asset hash-binding and tell me the verdict?”
Technical details
Endpoint
POSThttps://payai.agentstools.dev/provenance/verify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need cryptographic verification of C2PA / Content Credentials embedded in media files — particularly when you need a trust-list-verified verdict and structured provenance claims (signer, AI-generation flag, edit history). Prefer this over general-purpose deepfake detectors when the media file may already carry a C2PA manifest and you need to know whether that manifest is authentic and intact. It is not a perceptual or AI-detection tool — it only reads and validates cryptographically signed embedded provenance data.
Side effects
- Media file too large or unsupported format — returns error with supported format list
- Base64 encoding is malformed or truncated — returns parse error
- File contains no embedded C2PA manifest — verdict returned as 'unsigned' with no claims
- Signer certificate not on production or Interim Trust List — verdict returned as 'untrusted-signer'
- Asset hash does not match embedded manifest hash — verdict returned as 'tampered'
- Network timeout if file is very large
- Invalid MIME type provided — returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| media | string | The media file bytes, base64-encoded (image, video, audio or PDF). A data: URI prefix is tolerated. |
| format | string | Media MIME type or file extension, e.g. image/jpeg, png, mp4, pdf (see GET /provenance/sources for the full list) |
Tags
x402
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