by
mauricevanloon
1 (0 reviews)
Tracefern Media Check for Content Credentials (C2PA)
Verifies the Content Credentials (C2PA) of uploaded images, audio and text (signature, hash and signer) and shows the verdict in the Media Library.
Tracefern Media Check for Content Credentials (C2PA) ranks #67,850 among WordPress.org plugins with 1+ active installations, a 1/5 rating from 0 reviews, and was last updated Oct 26, 2026. Data from WordPress.org, refreshed twice daily — see methodology.
Compatible with WP 7.1
v0.7.3
Current Version v0.7.3
Updated 6 days ago
Last Update on 26 Oct, 2026
Refreshed 2 days ago
Last Refreshed on
Downloads -65.7% this week
Actively maintained
Rank
#67,850
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No change
Active Installs
1+
-50%
KW Avg Position
26
1 worse
Downloads
1.1K
+2 today
Support Resolved
0%
—
No change
Rating
20%
Review 1 out of 5
1
(0 reviews)
Next Milestone 10
0+
10+
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Ranks to Climb
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Growth Needed
8,000,000
Active Installs
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- Version
- 0.7.3
- Last Updated
- Oct 26, 2026
- Requires WP
- 7.1+
- Tested Up To
- 7.1
- PHP Version
- 8.3 or higher
- Author
- mauricevanloon
Support & Rating
- Rating
- ★ ☆ ☆ ☆ ☆ 1
- Reviews
- 0
- Support Threads
- 0
- Resolved
- 0%
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Frequently Asked Questions
Common questions about Tracefern Media Check for Content Credentials (C2PA)
Many plugins look for C2PA or IPTC metadata and label an image as AI-generated when they find it. Some count any C2PA manifest as AI, so a camera photo with Content Credentials is labelled AI-generated. Others read what the manifest claims without checking it, so an AI image that was changed after signing keeps its label. Tracefern verifies first: a camera photo stays a camera photo, and a changed image says "Does not verify" and loses the label. A few plugins verify too. Tracefern does it on the server, by itself, for every upload, and checks the signer against the bundled C2PA trust lists, so it can say "Verified" rather than only that the signature holds. It adds no badges to your pages; it gives you the verdict a label can rely on.
Both mean the file is exactly as it was signed. "Verified" also means the signer's certificate comes from an authority on the trust list, by default the C2PA conformance programme's list. "Intact" means nobody on that list vouches for who the signer is.
The file was changed after it was signed, for example by an editor or an image optimizer that kept the old Content Credentials but rewrote the image data (assertion.dataHash.mismatch in the details). An optimizer that resizes the original on upload removes them: the image then shows "No Content Credentials". Either way it also says "Changed after upload".
Most cameras and apps do not add them yet, and many services remove them
No. It shows what a verified manifest says about the image or the earlier versions it was made from, each of which must verify too. An AI image without Content Credentials gets no label. Next to "Intact: signer not trusted" the claim comes from a signer nobody on the trust list vouches for.
No. It only reads the original file and stores the result with the image. Settings → Privacy offers suggested text for your privacy policy.
The check runs in the background through WP-Cron, on the next request to the site after the upload, usually within seconds. If WP-Cron is switched off (DISABLE_WP_CRON), the checks run with the site's own cron job. After an hour without a result the image shows "Not checked"; check it again under Settings → Tracefern.
Its file was replaced after the check by something WordPress did not report, such as another plugin or an upload over FTP. The old verdict no longer applies, so none is shown; check it again with wp tracefern check . An image edited in WordPress's own image editor, or restored to its original, is checked again automatically. After moving a site with a tool that does not keep file modification times, or with media moved to external storage, every image can show this; check them again with wp tracefern check --all. Images whose original another plugin keeps in cloud storage are checked there, up to 64 MB.
JPEG, PNG, GIF and WebP images; WAV, MP3 and FLAC audio; plain text (.txt), checked byte for byte (experimental in C2PA). An MP3's cover art is checked as an image of its own. The browser converts HEIC to JPEG without its Content Credentials. Video is not checked.
Under Settings → Tracefern, press "Check all files again"; the checks run in the background. Or with WP-CLI: wp tracefern check --all, or --state=Invalid,error, or attachment IDs; --dry-run shows what would be checked.