Content Credentials · image

What do this image's Content Credentials say?

Content Credentials (the C2PA standard) are a signed record some cameras and AI tools attach to an image: what made it, whether it was AI-generated, and the edits along the way. Drop in a picture and this pulls that manifest out of the file and reads it back in plain language.

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Manifest

Logged actions

Assertions in the manifest

Raw decoded manifest (JSON)

What Content Credentials are

Content Credentials are the consumer name for a manifest defined by the C2PA specification. It is a small signed record tucked inside the file that lists the claim generator (the app or device that produced the image), a set of assertions such as the actions taken on it, and a cryptographic signature over the whole thing. Adobe, Leica, Sony, OpenAI and others write these, which is why an image from those tools can carry a verifiable history while a plain screenshot carries nothing.

The AI-generation signal

The most-watched field is digitalSourceType, an IPTC code that says how the content originated. The value trainedAlgorithmicMedia means it was produced by a generative model; compositeWithTrainedAlgorithmicMedia means AI content was mixed into it. This tool surfaces that field directly and flags it, so you are not reading a raw URL out of a strings dump to find out.

What a manifest does and does not prove

A present, well-formed manifest tells you what the signer claimed and, if you trust the signer, that the pixels have not changed since signing. This tool reads the claim; it does not verify the signature or check the certificate against a trust list, so treat the signing details as reported, not proven. Just as important, the absence of a manifest proves nothing: most images have never carried one, and a manifest can be stripped by any re-save or screenshot. Pair it with the metadata viewer and hidden text scan for the rest of the picture.

Sources

C2PA, Content Credentials: C2PA Technical Specification (coalition for content provenance and authenticity).
ISO/IEC 19566-5, JPEG Universal Metadata Box Format (JUMBF).
IETF RFC 8949, Concise Binary Object Representation (CBOR).
IPTC, Digital Source Type NewsCodes vocabulary.