You need to sign your content. Anthropic already marks everything Claude generates and you still don't
Originally published at carlosortet.com . Republished here with canonical. It matters more than ever, and it is more urgent than ever, to be able to prove that a model has read and used our content. There is an opportunity window to mark your content and this is before a model uses it. On 10 July I published an article here about the idea of hiding an impossible date inside a text so you could…
Anthropic has confirmed that all text generated by its AI model Claude now carries a unique watermark. This move comes after Anthropic signed the Code of Practice on Transparency of AI-Generated Content on July 8, 2026, making it mandatory for all models launched from August 2, 2026, to include the watermark. The watermark, which travels with the text across various platforms and editing processes, is part of the text and does not degrade the output quality.
While Anthropic's approach to watermarking does not fully solve the issue of proving what the model has been trained on, it marks a significant step forward in ensuring the provenance of AI-generated content.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
Also reported by 6 other outlets
- European regulators seek Claude usage data from Anthropic, upsetting some users timesofindia.indiatimes.com
- Exporting ANTHROPIC_BASE_URL does not reach the Claude Code panel in VSCode dev.to
- Anthropic watermarking Claude AI content | Explained thehindu.com
- Anthropic details Claude's text watermark: it only shows Claude was likely involved, is sparse in code and factual text, and disappears after a full rewrite (Anthropic) anthropic.com
- Techies have concerns about Claude's hidden watermark. Anthropic has some answers. businessinsider.com
- Anthropic shares more details about how Claude’s new watermarks will work techcrunch.com
