ChronoVerify

Image provenance glossary

Glossary

Plain-language definitions of the terms behind capture-time and provenance verification: C2PA, Content Credentials, EXIF, XMP, ELA, trust lists, and Article 50.

C2PAC2PA is an open technical standard for recording where a piece of media came from and how... Content CredentialsContent Credentials are the user-facing label for C2PA provenance data: a tamper-evident... EXIFEXIF is metadata that cameras and phones write into a photo: the capture time, the device... XMPXMP is an XML-based metadata format, created by Adobe, that travels alongside or inside a... ProvenanceProvenance is the recorded origin and edit history of a piece of content: where it came... Capture timeCapture time is when a photo was taken, as recorded by the camera (the EXIF... Error level analysis (ELA)Error level analysis re-saves a JPEG at a known quality and measures where the... C2PA trust listA C2PA trust list is the set of certificate authorities whose signatures are recognised... EU AI Act Article 50Article 50 of the EU AI Act sets transparency duties: providers of AI that generates... Content fingerprint (SHA-256)A content fingerprint is a cryptographic hash (ChronoVerify uses SHA-256 and SHA-512)...

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Related

Method and limitsHow the verdict is produced and what it does not mean.Use casesHow teams apply provenance checks by vertical.IntegrationsWire ChronoVerify into your agent or workflow.