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OpenAI
Read original source (EN)https://cdn.openai.com/pdf/e9508624-d767-41b6-a26d-e34ca798ada6/textgrain-entropy-calibrated-watermarking-for-language-model-text.pdf
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PDF20pages: physical1–6, lines 0–338; cover, abstract, introduction and sections2–3; appendix proofs unreviewed.
Officially linked technical report. Block optimal transport embeds a statistical signal under an entropy budget; detection requires matching key/configuration. Calibration depends on independence assumptions; fixed keys and finite precision need empirical checks. Not independently reproduced or an ownership finding.
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ANTI-AI ARCHIVE. “textGrain: Entropy-Calibrated Watermarking for Language Model Text.” src-0974. Include this page’s URL and your access date when citing.