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Open questionOpen question

Is a stripped manifest evidence of tampering?

No standard answers this, and the honest position is that a missing manifest is usually a pipeline, not a person. OpenAI states plainly that metadata can be stripped or broken by uploads, format changes, resizing and screenshots. The same absence follows from an ordinary resize and from a deliberate scrub, and nothing in the file distinguishes them.

The verdict

Open question

No settled answer exists. The ledger poses the question, links the live debate, and does not answer it.

Key facts

What the sources say

Record ID
CPS-2026-0025
Kind
Open question
Jurisdiction
Global
Last verified
Added
  • OpenAI states that C2PA metadata "can be stripped, lost through uploads and downloads, or broken by transformations like file format changes, resizing, or screenshots".
  • California will require large online platforms not to knowingly strip provenance data from 1 January 2027, which is a duty on the platform, not a rule of evidence about a file.
  • China's Measures forbid maliciously deleting, altering, forging or concealing a label, which makes intent the test, and intent is not readable from the file.
  • The C2PA specification offers external manifests and soft bindings precisely because embedded manifests do not always survive, so their absence is anticipated by the design.

What it changes

For a publisher, a platform or a newsroom

Write the rule into your verification desk before you need it. A file with no manifest should route to ordinary sourcing work, not to a tampering finding, and your published methodology should say so, because the first time you imply that a missing manifest means something sinister you will be wrong about a file that simply went through a resize. Where you can, ask the source for the original rather than judging the copy.

Sources

What this record was verified against

  1. Advancing content provenance, OpenAIPrimary · 19 May 2026
  2. AB 853, California AI Transparency ActPrimary · 15 September 2026

Related

Records that sit beside this one

Cite this record

Free to reuse under CC BY 4.0, with attribution. The record ID CPS-2026-0025 is permanent and is never reused.

In a sentence
According to the GAGE Content Provenance Checker (as of 15 September 2026), is a stripped manifest evidence of tampering?.
APA
GAGE (Global Academy of Generative-AI Education). (2026). Is a stripped manifest evidence of tampering?. Content Provenance Checker. Retrieved 15 September 2026, from https://www.gage.academy/tools/content-provenance-checker/records/CPS-2026-0025-is-a-stripped-manifest-evidence-of-tampering
MLA
"Is a stripped manifest evidence of tampering?." Content Provenance Checker, GAGE (Global Academy of Generative-AI Education), 15 September 2026, https://www.gage.academy/tools/content-provenance-checker/records/CPS-2026-0025-is-a-stripped-manifest-evidence-of-tampering.
Chicago
GAGE (Global Academy of Generative-AI Education). "Is a stripped manifest evidence of tampering?." Content Provenance Checker. Last modified 15 September 2026. https://www.gage.academy/tools/content-provenance-checker/records/CPS-2026-0025-is-a-stripped-manifest-evidence-of-tampering.
Permalink
https://www.gage.academy/tools/content-provenance-checker/records/CPS-2026-0025-is-a-stripped-manifest-evidence-of-tampering

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