01
Hidden characters
Inspectable hereZero-width spaces, directional controls, soft hyphens, and unusual spacing are Unicode characters. We can show their exact position and code point.
Independent evidence tool · Updated Aug 16, 2026
Claude watermark checker—without the guesswork.
Inspect what is actually present in your text. Find hidden Unicode characters, clean formatting safely, and understand what cannot yet be verified about Claude's statistical watermark.
Local processingNo sign-upNo fake AI score
DIRECT ANSWER
Yes, Claude can add a statistical text watermark. It is not the same as hidden characters, and a public third-party checker cannot reliably verify it without an official detection method.
Read the evidence →TEXT INSPECTOR
See the characters you cannot see.
Paste text below. Nothing runs until you choose Inspect text, and the analysis stays on this device.
Your evidence report will appear here.
We will list exact Unicode code points, positions, and readable context.
Claude statistical watermarkNot currently verifiable here
This cleaner does not detect or remove a word-choice watermark.
THREE DIFFERENT SIGNALS
“Watermark” can mean three different things.
Most misleading tools blur these together. WatermarkScope keeps the evidence and the limits separate.
02
Statistical watermark
Not publicly verifiableClaude's announced text watermark is a statistical pattern in word choices—not a hidden character that a cleaner can simply delete.
03
File credentials
Check with C2PAImages, documents, and media may carry signed Content Credentials. These are separate from the statistical pattern in text.
CLEAR ANSWERS
How the mechanism works →Common Claude watermark questions.
Does Claude watermark text?
Anthropic has announced statistical text watermarking for supported Claude outputs. It is based on word-selection patterns, not invisible Unicode characters.
Can copy and paste remove a Claude watermark?
No reliable conclusion follows from copying and pasting. It may strip some formatting or metadata, but it does not prove that a statistical watermark is gone.
What does this checker actually find?
It finds observable Unicode formatting characters and explains each one. It does not estimate whether Claude wrote the text.
Is my text uploaded?
No. The text inspector runs in your browser. Your pasted text is not sent to WatermarkScope for analysis or storage.