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Content Authenticity Initiative

README.md

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 435 198

  2. c2pa-python c2pa-python Public

    Python binding for c2pa-rs library

    Python 108 37

  3. c2pa-cpp c2pa-cpp Public

    C++ binding for C2PA

    C++ 17 14

  4. c2pa-js c2pa-js Public

    TypeScript 39 27

  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
  • c2pa-attacks Public

    Content Authenticity Security Tool

    contentauth/c2pa-attacks's past year of commit activity
    Rust 15 Apache-2.0 4 5 0 Updated Oct 20, 2026
  • c2patool Public

    Command line tool for displaying and adding C2PA manifests

    contentauth/c2patool's past year of commit activity
    Rust 150 Apache-2.0 44 2 12 Updated Oct 20, 2026
  • c2pa-python Public

    Python binding for c2pa-rs library

    contentauth/c2pa-python's past year of commit activity
    Python 108 Apache-2.0 37 3 5 Updated Oct 20, 2026
  • c2pa-cpp Public

    C++ binding for C2PA

    contentauth/c2pa-cpp's past year of commit activity
    C++ 17 Apache-2.0 14 1 3 Updated Oct 20, 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 20, 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 3 Updated Oct 20, 2026
  • opensource.contentauth.org Public

    Open source documentation site

    contentauth/opensource.contentauth.org's past year of commit activity
    JavaScript 2 24 7 2 Updated Oct 19, 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 435 198 159 126 Updated Oct 19, 2026
  • c2pa-js Public
    contentauth/c2pa-js's past year of commit activity
    TypeScript 39 MIT 27 5 9 Updated Oct 19, 2026
  • c2pa-cbor Public

    A fast, lightweight CBOR encoder/decoder used by C2PA

    contentauth/c2pa-cbor's past year of commit activity
    Rust 0 Apache-2.0 1 0 7 Updated Oct 16, 2026
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Most used topics

c2pa metadata