Anthropic Watermarks EU Claude Output Under AI Act

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- Anthropic says Claude models in the EU will add invisible watermarks to generated text and C2PA metadata to generated files, citing the EU AI Act as the reason for the effort to trace AI output ancestry.
- The Register reports Anthropic will embed watermarks designed to make AI-generated content identifiable while remaining imperceptible to end users in the EU market.
Why it matters: Anthropic is implementing output-level provenance tooling specifically for EU Claude users, meaning every text and file Claude produces in that region will carry machine-readable signals of its AI origin — a compliance posture shaped entirely by the EU AI Act's traceability requirements.
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