Watermark detected
The text contains evidence of a supported watermark. This is a signal, not conclusive proof of authorship.
AI transparency
A little more
clarity.
Check the mark.
Understand the limits.
A dedicated home for CMY-AI watermark verification and supported third-party formats, as verification tools become available.
Public checking is not available yet.
In developmentThe experimental CMY-AI checker currently runs locally. A public service is not available, and detection accuracy has not yet been established.
This page explains the supported signals and their limits. It does not currently accept or check text.
Understand the results ↓What a result will mean.
A watermark check looks for a supported signal in the text. It does not decide who wrote it.
No watermark detected
No supported signal met the detection threshold. The text could still be AI-generated.
Insufficient evidence
The text may be too short, heavily edited, or otherwise unsuitable for a reliable result.
A mark has limits.
Watermarks are not universal. Different systems use different methods, and some AI outputs have no watermark at all.
Editing or rewriting can weaken a signal. This experimental checker supports cmywm-research-v1 and cmywm-research-v2. Other formats and production configurations are not supported.
Resistance to removal is a development goal, not an established result. A watermark or checker alone does not establish regulatory compliance.