C2PA / Content Credentials
by C2PA (Adobe, Microsoft, OpenAI, and others) · official site
- Detects
- image
- Free tier
- Open standard, free to verify.
- Sold to
- Everyone
What it does well
- Cryptographic proof of origin and edit history, not a probability
- Adopted by OpenAI, Adobe, Leica, Sony and Microsoft
- Verifiable offline against the signing certificate
Where it fails
- Stripped by most social platforms on upload — absence proves nothing
- Only present if the producing tool chose to write it
Our own measurements
Not yet published. We would rather show nothing than repeat a number we have not reproduced — see our methodology for the benchmark design and what we will publish when it has run.