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Anthropic Adds Invisible Watermarks to Claude

August 11, 2026
Anthropic Adds Invisible Watermarks to Claude

Every piece of text produced by Claude will soon contain hidden digital watermarks. These marks are designed to stay in the content even if you copy or slightly edit the text. This update applies to all users around the world.

Starting in August 2026, the company will build this tracking technology directly into its future models. They are also adopting the C2PA standard to sign files and verify where they came from. This creates a clearer paper trail for AI content.

Anthropic plans to release tools that let others check if a text was written by their AI. They want to make it easier to tell the difference between human writing and machine output. This move aims to increase transparency across the web.

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