What Claudes AI text watermark actually does

Anthropic has begun building a watermark into text generated by future Claude models, a change the company says is meant to help identify whether a given piece of writing was likely produced by its AI. This new feature, implemented to comply with EU rules, is meant to be indistinguishable to the human eye, without changing Claude's normal writing output.The company laid out the mechanics and rationale behind the feature in a post published to its website.How does the watermark work?According to