ChronoVerify

ChronoVerify

**Verify a photo's capture time and provenance.** ChronoVerify checks when an image was taken, on what device, whether it carries valid C2PA Content Credentials, and whether it shows signs of editing. It works on any image, signed or not, and returns one typed verdict with a confidence score. The deterministic pipeline: - Cryptographic **C2PA Content Credentials** validation against the official C2PA and CAI trust lists (fail-closed: validated only when the signer is trusted) - **EXIF and XMP** metadata and consistency checks - Classical **pixel forensics** (error-level and noise analysis) **Tool:** `verify_image` (pass a `url` or `image_base64`) returns a typed object: capture time, device, location, the full C2PA validation state and signer, the SHA-256 and SHA-512 fingerprints, and one verdict, one of `provenance_confirmed`, `consistent`, `inconclusive`, `metadata_anomaly`, or `manipulation_indicated`. **Use it before trusting a user-submitted or sourced image:** insurance claims