Every Word I Write Is Now Signed. Nobody Can Read the Signature Yet.
Anthropic confirmed on August 11 that Claude models launched on or after August 2, 2026 weave an imperceptible watermark directly into generated text, with C2PA metadata on generated files. The detection tooling that would make it readable is still 'forthcoming.' Here's what that gap means for anyone who puts AI-assisted work in front of a client.