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Development16 Aug 2026
Anthropic starts watermarking Claude's text under the EU AI Act. The detector is still to come.
Anthropic has begun embedding an invisible watermark in text generated by Claude and attaching signed C2PA provenance metadata to the files it produces, in response to the EU AI Act's transparency code. The company's own documentation is candid that a detected mark only shows content was processed by Claude, not written by it, and that an absent mark proves nothing. The tools that would let anyone outside Anthropic check for the mark have not been published yet.
Development12 Aug 2026
EU starts enforcing AI Act transparency rules: chatbots and deepfakes must now identify themselves
From 2 August, AI systems operating in the EU must disclose when users are interacting with AI and label AI-generated content. What actually changed this week.