Jurisdiction
Global: Content Provenance Checker
Global carries 13 records on the Content Provenance Checker as of September 2026: 9 verified at a primary source, 0 reported, 0 announced with no document yet, 0 searched and absent, and 4 open questions. By kind: standard 8, platform or model provider 1, open question 4.
Standard
8 records
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".
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.
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."
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.
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]".
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.
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.
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.
Platform or model provider
1 record
Cameras that sign at capture
Global · verified 15 September 2026
Leica's Content Credentials page lists the SL3-P, Q3 Monochrom, M EV1, SL3-S, M11-D and M11-P as cameras with Content Credentials.
Open question
4 records
May the absence of Content Credentials be treated as suspicion?
Global · verified 15 September 2026
OpenAI states that if no metadata or watermark is detected "the tool will not make a definitive conclusion about whether the image was generated with OpenAI tools since provenance signals can in some cases be stripped".
Who answers for a manifest that is signed and false?
Global · verified 15 September 2026
The C2PA trust model is expressed as validation states: well formed, valid and trusted, each about signatures, certificates and lists rather than about the truth of an assertion.
Does a watermark survive re encoding?
Global · verified 15 September 2026
Google states that the image and video watermark is "designed to stand up to modifications like cropping, adding filters, changing frame rates, or lossy compression".
Is a stripped manifest evidence of tampering?
Global · verified 15 September 2026
OpenAI states that C2PA metadata "can be stripped, lost through uploads and downloads, or broken by transformations like file format changes, resizing, or screenshots".
Answers
What people ask about Global
What does the specification actually define in Global?
What a manifest says when the content was generated by AI (verified); JUMBF, ISO/IEC 19566-5:2023, the box format under every manifest (verified); The IPTC Digital Source Type vocabulary (verified); JPEG Trust, ISO/IEC 21617 (verified); Content Credentials at ISO: ISO/CD 22144 (verified); The C2PA conformance programme, the trust list and the conforming products list (verified); Where a C2PA manifest actually sits in each file format (verified); The C2PA technical specification, version 2.4 (verified). Each record page quotes the document and says what it changes for a publisher, a platform or a newsroom.
What does a platform or model provider actually embed, display or verify in Global?
Cameras that sign at capture (verified). Each record page quotes the document and says what it changes for a publisher, a platform or a newsroom.
What has nobody settled in Global?
May the absence of Content Credentials be treated as suspicion? (open question); Who answers for a manifest that is signed and false? (open question); Does a watermark survive re encoding? (open question); Is a stripped manifest evidence of tampering? (open question). Each record page quotes the document and says what it changes for a publisher, a platform or a newsroom.
What has nobody settled in Global?
May the absence of Content Credentials be treated as suspicion?; Who answers for a manifest that is signed and false?; Does a watermark survive re encoding?; Is a stripped manifest evidence of tampering?. The ledger poses these and does not answer them.
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Free to reuse under CC BY 4.0, with attribution.
- In a sentence
- According to the GAGE Content Provenance Checker (as of 15 September 2026), global on the content provenance checker.
- APA
- GAGE (Global Academy of Generative-AI Education). (2026). Global on the Content Provenance Checker. Content Provenance Checker. Retrieved 15 September 2026, from https://www.gage.academy/tools/content-provenance-checker/jurisdictions/global
- MLA
- "Global on the Content Provenance Checker." Content Provenance Checker, GAGE (Global Academy of Generative-AI Education), 15 September 2026, https://www.gage.academy/tools/content-provenance-checker/jurisdictions/global.
- Chicago
- GAGE (Global Academy of Generative-AI Education). "Global on the Content Provenance Checker." Content Provenance Checker. Last modified 15 September 2026. https://www.gage.academy/tools/content-provenance-checker/jurisdictions/global.
- Permalink
- https://www.gage.academy/tools/content-provenance-checker/jurisdictions/global
Last updated . Every record re verified . The ledger is checked monthly, first Monday, and the same day for any C2PA specification release.
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