Methodology

We report deterministic findings, not an unsupported probability score.

What the checker detects

The browser-local checker scans pasted text for Unicode default-ignorable code points and reports each matching character, code point, and position. It preserves normal line breaks in the inspected text.

What cleaning changes

Cleaning removes only selected inspectable characters from the browser preview. File processing uses format-specific tooling and must report the changes it made.

What we cannot detect

Anthropic’s Claude text watermark is a keyed statistical signal in word-selection patterns. We cannot independently verify its presence or removal without the appropriate detector. A clean Unicode report is not evidence that a statistical watermark is absent.

Research standards

Any published experiment will state its date, model or version, sample size, collection method, tests, raw findings, limitations, and reproduction instructions. We do not publish invented corpus results.