What Is C2PA and What Are Content Credentials?
An in-depth explanation of the C2PA provenance standard, tamper-evident digital manifests, signing certificates, and their role across AI and photography.
The Coalition for Content Provenance and Authenticity (C2PA) is an open technical standard designed to address media transparency and misinformation. Founded by leaders across technology and media—including Adobe, Microsoft, Arm, Intel, Truepic, and Sony—C2PA defines how digital assets can carry verifiable, cryptographic histories.
How Content Credentials Work
When a compliant software application or camera hardware creates or modifies a digital file, it packages provenance data into a standardized container known as JUMBF (JPEG Universal Metadata Box Format, ISO/IEC 19566-5). This package includes:
- Assertions: Factual statements regarding the file (e.g., author name, camera model, edit actions, or whether generative AI tools were used).
- Claim: A structured document summarizing the active assertions and hashes of the underlying visual media bytes.
- Claim Signature: A cryptographic signature generated using an X.509 digital certificate from a trusted certificate authority.
C2PA Is Not Just for AI
A common misconception is that C2PA presence automatically denotes AI-generated media. In reality, C2PA is an open provenance standard used across three major domains:
- Hardware Capture: Secure camera hardware (such as authenticated Leica and Sony bodies) signs raw sensor captures at the moment the shutter is pressed to prove human capture.
- Creative Editing: Desktop suites like Adobe Photoshop record revision histories, masking steps, and composite layers.
- Generative AI: Services like Adobe Firefly, OpenAI DALL-E, and Microsoft Designer sign generated exports to disclose synthetic origin.
Check C2PA in Your Files
Inspect Content Credentials manifests and certificates with our free C2PA Checker.