OP vs Watermarking
Watermarks — visible or invisible — have been the go-to method for claiming ownership of images. But visible marks degrade image quality, and invisible marks can be stripped or destroyed by common operations like re-saving or screenshotting.
Where Watermarking Falls Short
Watermarking has a place, but it wasn't designed for provenance.
Visible watermarks degrade image quality — they obstruct the visual content and reduce commercial value of the image.
Invisible watermarks can be stripped — re-encoding, screenshotting, cropping, or format conversion often destroys embedded watermarks.
No chain of custody — watermarks indicate a claim of ownership but don't provide a verifiable history of who handled the file.
No tamper detection — a watermark tells you someone claimed the image, not whether the image itself has been altered since.
How OP Is Different
OP uses the C2PA standard to embed cryptographic provenance directly in the file.
C2PA manifests are embedded in file metadata — no visual alteration to the content whatsoever.
Survives in-spec workflows — provenance persists through standard file handling in C2PA-aware applications.
Full chain of custody — each signer in the chain adds a cryptographic layer, creating verifiable provenance history.
Tamper-evident by design — any modification to the file content invalidates the cryptographic hash in the manifest.
Side-by-Side Comparison
| Feature | OP | Watermarking |
|---|---|---|
| Visual quality preserved | Visible: No | |
| Survives re-encoding | In C2PA-aware apps | Often stripped |
| Tamper detection | ||
| Chain of custody | ||
| Signer identity | Cryptographic | Visual claim only |
| Works without special viewer | Standard metadata | Visible: Yes |
| Open standard | C2PA | Varies |
| Offline verification |
See the Difference Yourself
Try signing and verifying files with OP — free, no account required.