Checked fact 161015 Oct 2026Research
OpenAI says the absence of a detected watermark does not prove human authorship, and that a watermark does not identify the user.
The exact words it rests on
A watermark does not identify the user. ... The absence of a detected watermark does not prove human authorship.
What the source said when we opened it, on 15 Oct 2026.
The source
Our approach to EU text provenance rules
Checked
Checked by the notis newsroom on , against the source above.
In the story
How text watermarks work and what EU Article 50 requires 15 Oct 2026
Cite this fact
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