Preserving content provenance by integrating Content Credentials into Cloudflare Images
Feb 3, 2025Will Allen
Summary
This post introduces the integration of the C2PA standard into Cloudflare Images, enabling the preservation and cryptographic signing of Content Credentials. It details how Cloudflare Images can retain existing credentials and append new, signed assertions for transformations like resizing. The technical explanation covers JUMBF as the metadata container, JSON manifests for assertions, and the use of DigiCert for Cloudflare's end-entity certificate to join the Trust List for verification.
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