C2PA
Definition
Coalition for Content Provenance and Authenticity. A cross-industry group that has published an open technical specification for embedding cryptographically signed provenance manifests in media files. A verified C2PA manifest establishes who created or edited a file and with what tools, providing a forward-looking chain of authenticity from capture.
Related terms
- Content Credentials
- Adobe's brand name for C2PA-compliant provenance manifests. A Content Credentials badge on an image indicates that a signed, auditable creation history is...
- Daubert Standard
- The US federal evidentiary standard (Daubert v. Merrell Dow Pharmaceuticals, 1993) requiring that expert testimony be based on scientifically valid methods with...
- Distribution Shift
- In machine learning, distribution shift occurs when the statistical characteristics of data the model encounters in deployment differ from those of the...
- GAN Fingerprint
- A model-specific periodic pattern embedded in GAN-generated images, detectable by averaging outputs and subtracting a reference. Analogous to photo-response non-uniformity (PRNU) in...
- Invisible Watermark
- A signal embedded in an image or audio file that is imperceptible to a human viewer but detectable by an algorithm. In...
- ISO/IEC 17025
- The international standard for testing and calibration laboratories, published jointly by the International Organization for Standardization and the International Electrotechnical Commission. It...
- NIST CFTT
- The National Institute of Standards and Technology Computer Forensics Tool Testing programme. It publishes independent test reports for digital forensic tools, including...
- Out-of-Distribution (OOD) Failure
- The drop in a classifier's accuracy when test samples come from a different statistical distribution than the training data. AI-generated image detectors...
- PRNU
- Photo-Response Non-Uniformity. The per-pixel variation in light sensitivity across a camera sensor, which produces a consistent, device-specific noise pattern in every photograph...
- SWGDE
- Scientific Working Group for Digital Evidence. A US multi-agency body that publishes consensus best-practice documents for digital forensic disciplines, including image authentication,...
Explained in these topics
- AI-Generated Image Detection and ProvenanceCoalition for Content Provenance and Authenticity. An open technical standard for attaching cryptographically signed provenance manifests to media files, recor...
- Standards and Validation Frameworks in Media ForensicsCoalition for Content Provenance and Authenticity. A cross-industry group that has published an open technical specification for embedding cryptographically si...