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Verify a photo or video by checking two things separately: its provenance (what is known about the file’s origin and changes) and the context of the claim it is being used to support. Content Credentials can help establish a file’s history when present, but neither their presence nor absence proves that the depicted event happened as claimed.
What authenticity checks can—and cannot—tell you
Provenance is information about an asset’s origin, modifications and history. The C2PA standard describes Content Credentials as cryptographically bound records that can carry assertions about those details. They are evidence about a file’s history, not a verdict on whether its contents are true or factual. C2PA’s explainer makes that distinction explicit.
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Independent context checks answer a different question: whether the accompanying claim about who, when, where or what the media depicts is supported. A provenance record may help establish where a file came from or how it was handled; it cannot by itself certify the event shown.
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| Approach | What it can establish | What remains uncertain |
|---|---|---|
| Provenance validation | Whether a credential is present and whether its signature and connection to the asset pass the verifier’s integrity checks; recorded origin and actions may also be visible. | Whether the depicted event happened as described. A credential may be absent or incomplete. |
| Independent context checking | Whether the file appeared earlier, whether it has been presented in another context, and whether independent reporting or records support the claim. | Context checks do not, by themselves, establish the complete editing history of the file. |
How to verify a photo or video
- Keep the copy you received. Save the original file if possible, along with where and when you received it and the claim attached to it. Avoid editing or recompressing the only copy before inspection, since changes can affect provenance information.
- Inspect available Content Credentials. Use a compatible viewer or validator, if available, to see whether credentials are present. Review the recorded origin and actions. Pay attention to whether information is an assertion created and signed by a device or tool, gathered from metadata, or entered by a user; these do not all have the same basis.
- Interpret the validation state. C2PA guidance distinguishes states such as valid, well-formed and trusted. A valid signature and intact binding concern technical integrity. “Trusted” also depends on whether the signer is recognized by the verifier’s supported trust list. Read any warning rather than treating it as a simple true-or-false result. C2PA’s user experience guidance explains these states and cautions against definitive authenticity claims.
- Check the claim independently. Identify who first published the media and when. Look for earlier appearances, different captions or locations, and independent reporting or records that corroborate the event. A file can be authentic as a file yet miscaptioned or used to support a false claim.
- Describe precisely what you established. Say, for example, that a signed provenance record validated or that an earlier publication showed a different context. Separate those findings from anything you could not verify.
How to interpret missing or invalid credentials
Content Credentials are optional. A file may have none because credentials were never added or were lost during editing, processing or distribution. Their absence is not evidence that the media is fake.
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A failed or incomplete credential also needs context. C2PA’s September 2025 explainer notes that provenance can be incomplete; edits made in software that does not maintain C2PA information may break a credential’s binding or leave an incomplete record. A warning is a reason to examine the specific validation result and seek independent evidence—not a standalone verdict that the content is false. C2PA’s September 2025 explainer discusses these limits.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why visual clues and AI detectors are not a verdict
Visual inspection and forensic tools can contribute evidence, but they should not replace provenance review and independent context checks. The sources cited here do not establish a general accuracy rate for deepfake or AI-image detectors, so a detector result should not be presented as definitive proof of authenticity or fabrication. If you use one, report its finding as a tool result and corroborate it independently.
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C2PA’s guidance puts the goal this way: “Instead of asserting definitive claims about an asset’s authenticity, empower users with access to Content Credentials information that helps them make informed judgments.” That is a useful standard for anyone assessing or reporting disputed media.
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