Stroma
External verification
Verify a photo or video
Check any image or video for Content Credentials (C2PA). We read its cryptographic provenance manifest and tell you whether it’s intact, who signed it, and how the media was made. Files are used only for the check — never stored.
Drop an image or video here
or tap to choose · up to 64 MB
Reading credentials…
Have a Stroma proof link?
Images shared from Stroma carry a proof strip with a
stroma.social/p/… link. Open it to see the verified
original and compare the copy you were sent.
Stroma verifies provenance — that media carries an intact, signed record of
how it was made — not the caption or context around it.