Standard

What does the specification actually define?

Q: What does the specification actually define?

What a manifest says when the content was generated by AI (Global, verified); JUMBF, ISO/IEC 19566-5:2023, the box format under every manifest (Global, verified); The IPTC Digital Source Type vocabulary (Global, verified); JPEG Trust, ISO/IEC 21617 (Global, verified); Content Credentials at ISO: ISO/CD 22144 (Global, verified); The C2PA conformance programme, the trust list and the conforming products list (Global, verified); Where a C2PA manifest actually sits in each file format (Global, verified); The C2PA technical specification, version 2.4 (Global, verified).

8 records of kind standard are on the Content Provenance Checker as of September 2026: 8 verified, 0 reported, 0 announced, 0 absent, 0 open. By jurisdiction: Global 8.

Standard

8 records, newest first

VerifiedStandardCPS-2026-0008
What a manifest says when the content was generated by AI
Global · verified 15 September 2026
The specification states that "An action may include a digitalSourceType key, whose value shall be one of the terms defined by the IPTC or a C2PA specific value".
VerifiedStandardCPS-2026-0007
JUMBF, ISO/IEC 19566-5:2023, the box format under every manifest
Global · verified 15 September 2026
The catalogue entry reads "ISO/IEC 19566-5:2023, Information technologies, JPEG systems, Part 5: JPEG universal metadata box format (JUMBF)", status Published.
VerifiedStandardCPS-2026-0006
The IPTC Digital Source Type vocabulary
Global · verified 15 September 2026
The scheme URI is http://cv.iptc.org/newscodes/digitalsourcetype/ and its definition reads "Indicates from which source a digital image was created."
VerifiedStandardCPS-2026-0005
JPEG Trust, ISO/IEC 21617
Global · verified 15 September 2026
ISO/IEC 21617-1:2026, Information technology, JPEG Trust, Part 1: Core foundation, status Published, edition 2, publication date 2026-08, stage 60.60.
VerifiedStandardCPS-2026-0004
Content Credentials at ISO: ISO/CD 22144
Global · verified 15 September 2026
The ISO catalogue entry reads "ISO/CD 22144" with status "Under development" and stage "CD approved for registration as DIS [30.99]".
VerifiedStandardCPS-2026-0003
The C2PA conformance programme, the trust list and the conforming products list
Global · verified 15 September 2026
The programme holds generator products, validator products and certification authorities to the specification, the Certificate Policy and the Security Requirements.
VerifiedStandardCPS-2026-0002
Where a C2PA manifest actually sits in each file format
Global · verified 15 September 2026
PNG: "a chunk type of 'caBX' (as per PNG, 4.7.2)", recommended before the IDAT chunks.
VerifiedStandardCPS-2026-0001
The C2PA technical specification, version 2.4
Global · verified 15 September 2026
The specification index at spec.c2pa.org redirects to the 2.4 specification, and requests for versions 2.5, 2.6 and 3.0 return HTTP 404.

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In a sentence: According to the GAGE Content Provenance Checker (as of 15 September 2026), standard: content provenance checker.
APA: GAGE (Global Academy of Generative-AI Education). (2026). Standard: Content Provenance Checker. Content Provenance Checker. Retrieved 15 September 2026, from https://www.gage.academy/tools/content-provenance-checker/kinds/standard
MLA: "Standard: Content Provenance Checker." Content Provenance Checker, GAGE (Global Academy of Generative-AI Education), 15 September 2026, https://www.gage.academy/tools/content-provenance-checker/kinds/standard.
Chicago: GAGE (Global Academy of Generative-AI Education). "Standard: Content Provenance Checker." Content Provenance Checker. Last modified 15 September 2026. https://www.gage.academy/tools/content-provenance-checker/kinds/standard.
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Last updated 15 September 2026. Every record re verified 15 September 2026. The ledger is checked monthly, first Monday, and the same day for any C2PA specification release.

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