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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 429 195

  2. c2pa-python c2pa-python Public

    Python binding for c2pa-rs library

    Python 106 36

  3. c2pa-cpp c2pa-cpp Public

    C++ binding for C2PA

    C++ 17 14

  4. c2pa-js c2pa-js Public

    TypeScript 36 26

  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-swift Public

    C2PA SDK for Swift (iOS/macOS)

    contentauth/c2pa-swift's past year of commit activity
    Swift 27 Apache-2.0 13 5 2 Updated Oct 4, 2026
  • c2pa-android Public

    C2PA SDK for Android

    contentauth/c2pa-android's past year of commit activity
    Kotlin 13 Apache-2.0 6 6 3 Updated Oct 4, 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 429 195 133 72 Updated Oct 3, 2026
  • c2patool Public

    Command line tool for displaying and adding C2PA manifests

    contentauth/c2patool's past year of commit activity
    Rust 137 Apache-2.0 43 2 13 Updated Oct 3, 2026
  • cimpl Public

    A safe way to expose complex Rust code via C_FFI

    contentauth/cimpl's past year of commit activity
    Rust 0 Apache-2.0 0 0 5 Updated Oct 2, 2026
  • contentauth/c2pa-conformance-tool's past year of commit activity
    TypeScript 6 9 8 8 Updated Oct 1, 2026
  • c2pa-js Public
    contentauth/c2pa-js's past year of commit activity
    TypeScript 36 MIT 26 5 5 Updated Oct 1, 2026
  • c2pa-attacks Public

    Content Authenticity Security Tool

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

    Python binding for c2pa-rs library

    contentauth/c2pa-python's past year of commit activity
    Python 106 Apache-2.0 36 1 2 Updated Sep 29, 2026
  • opensource.contentauth.org Public

    Open source documentation site

    contentauth/opensource.contentauth.org's past year of commit activity
    JavaScript 2 24 7 1 Updated Sep 27, 2026