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C2PA Wiki

C2PA Specifications Overview

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The C2PA specification defines the technical standard for content provenance and authenticity.

Latest Version: 2.2

Section titled “Latest Version: 2.2”

The current version of the C2PA specification is v2.2, released in May 2025.

Available Languages

Section titled “Available Languages”

Download the specification in your preferred language:

LanguageDownloadStatus
🇬🇧 EnglishC2PA Specification 2.2Official
🇨🇳 简体中文C2PA 规范 2.2Beta (AI-translated)
🇯🇵 日本語C2PA 仕様 2.2Beta (AI-translated)
🇩🇪 DeutschC2PA Spezifikation 2.2Beta (AI-translated)
🇫🇷 FrançaisSpécification C2PA 2.2Beta (AI-translated)

Translation Notice: Non-English translations are AI-assisted (DeepL) with community review. The English version remains the authoritative reference.

Key Sections

Section titled “Key Sections”

The C2PA specification covers:

1. Core Concepts

Section titled “1. Core Concepts”
  • Manifests and Claims
  • Assertions and Evidence
  • Cryptographic Signatures
  • Trust Model

2. Technical Implementation

Section titled “2. Technical Implementation”
  • File Format Integration
  • Metadata Structure
  • Signing and Verification
  • Certificate Requirements

3. Supported Media Types

Section titled “3. Supported Media Types”
  • Images (JPEG, PNG, WebP, AVIF)
  • Video (MP4, MOV, WebM)
  • Audio (MP3, WAV, AAC)
  • Documents (PDF - in progress)

4. Advanced Features

Section titled “4. Advanced Features”
  • Ingredient Relationships
  • Redaction and Privacy
  • Hard Bindings
  • Soft Bindings

Online Resources

Section titled “Online Resources”

Version History

Section titled “Version History”
VersionRelease DateKey Changes
2.2May 2025Current version
2.1January 2025Enhanced privacy features
2.0September 2024Major revision
1.x2023Initial release

Getting Help

Section titled “Getting Help”

Next Steps

Section titled “Next Steps”