Processing record of your manuscript, by fingerprint

Public lookup of the Previum processing record: when the manuscript was received, which provider processed it, when it finished and that no copy is kept. Only with the SHA-256 fingerprint.

Every manuscript that goes through Previum leaves a row in this record, identified only by the SHA-256 fingerprint of your file (your browser computes it; the record holds no name, email or text). Enter the fingerprint to see what was done with it.

What each row says

• Received / Finished
• Processed by: Under "Processed by" you see the company whose model wrote the review. If the text went through OpenRouter, the zero-retention intermediary that is our first route, it is not recorded separately. A row from before 26 September 2026 may say xAI, which wrote some of the reviews back then; it plays no part today.
• Mode: no account · with account (the review, saved in your space; the manuscript is not stored on our servers) · Professional
• Copy kept: No: the text was processed and discarded on completion. Yes, while the Professional report was being generated and for 24 hours at most; then it is deleted.

How to compute the fingerprint

How to compute the fingerprint: on Windows, "certutil -hashfile file.docx SHA256"; on macOS or Linux, "shasum -a 256 file.docx".

There is no row with that fingerprint. If you pasted the text (no file), the fingerprint is the text’s and appears in the confidentiality commitment you downloaded.

Which providers may see the text and under what terms (no training, deletion periods) is set out, with the clauses quoted, at Security and privacy.

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