C2PA Machine-Readable Watermarking & Content Credentials
Understanding the technical standard chosen by the EU for marking synthetic images, audio, and video.
1. What is C2PA (Coalition for Content Provenance and Authenticity)?
C2PA is an open technical specification developed by Adobe, Microsoft, Google, and major media organizations. It embeds cryptographically signed metadata manifests directly into media file headers (JPEG, PNG, WebP, MP4, MP3), creating an unalterable audit trail of content creation and AI modifications.
2. How C2PA Satisfies Article 50(2)
Article 50(2) specifically demands that synthetic media outputs be marked in a "machine-readable format". Inaudible steganographic watermarks and C2PA metadata manifests are recognized by the European Artificial Intelligence Office as primary compliance mechanisms.
3. Inspecting C2PA Metadata using ExifReader
Developers can parse binary file buffers using ExifReader or Adobe Content Credentials SDK to detect C2PA manifests programmatically.
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