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Content Authenticity Initiative

Content Authenticity Initiative logo

The Content Authenticity Initiative (CAI) is a cross-industry community of major media and technology companies, civil organizations, and many others. Adobe founded CAI in 2019 and continues to lead it. The CAI develops open-source tools for verifiably recording the provenance of digital media, including content made with generative AI. The community's mission is to support broad adoption, making content authenticity and transparency scalable and accessible.

Our open-source efforts include:

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  1. c2pa-rs c2pa-rs Public

    Rust SDK for the core C2PA (Coalition for Content Provenance and Authenticity) specification

    Rust 437 200

  2. c2pa-python c2pa-python Public

    Python binding for c2pa-rs library

    Python 109 38

  3. c2pa-cpp c2pa-cpp Public

    C++ binding for C2PA

    C++ 17 14

  4. c2pa-js c2pa-js Public

    TypeScript 40 28

  5. c2pa-node-v2 c2pa-node-v2 Public archive

    Node.js bindings for C2PA v24 API

    Rust 11 11

Repositories

Showing 10 of 39 repositories
  • c2patool Public

    Command line tool for displaying and adding C2PA manifests

    contentauth/c2patool's past year of commit activity
    Rust 153 Apache-2.0 44 3 12 Updated Oct 23, 2026
  • c2pa-attacks Public

    Content Authenticity Security Tool

    contentauth/c2pa-attacks's past year of commit activity
    Rust 15 Apache-2.0 4 5 1 Updated Oct 23, 2026
  • c2pa-swift Public

    C2PA SDK for Swift (iOS/macOS)

    contentauth/c2pa-swift's past year of commit activity
    Swift 27 Apache-2.0 13 4 5 Updated Oct 23, 2026
  • c2pa-android Public

    C2PA SDK for Android

    contentauth/c2pa-android's past year of commit activity
    Kotlin 13 Apache-2.0 6 6 4 Updated Oct 23, 2026
  • c2pa-js Public
    contentauth/c2pa-js's past year of commit activity
    TypeScript 40 MIT 28 7 9 Updated Oct 22, 2026
  • opensource.contentauth.org Public

    Open source documentation site

    contentauth/opensource.contentauth.org's past year of commit activity
    JavaScript 2 24 7 5 Updated Oct 22, 2026
  • c2pa-rs Public

    Rust SDK for the core C2PA (Coalition for Content Provenance and Authenticity) specification

    contentauth/c2pa-rs's past year of commit activity
    Rust 437 198 161 130 Updated Oct 22, 2026
  • conformance-example-app Public

    A basic example of a C2PA signing app to help those working toward C2PA conformance

    contentauth/conformance-example-app's past year of commit activity
    JavaScript 0 MIT 0 0 0 Updated Oct 22, 2026
  • c2pa-cpp Public

    C++ binding for C2PA

    contentauth/c2pa-cpp's past year of commit activity
    C++ 17 Apache-2.0 14 1 2 Updated Oct 22, 2026
  • c2pa-python Public

    Python binding for c2pa-rs library

    contentauth/c2pa-python's past year of commit activity
    Python 109 Apache-2.0 37 4 4 Updated Oct 21, 2026