Writing & Literature
Seal your manuscript before you send it to anyone.
Dated evidence for novels, articles and poetry — verifiable by anyone.
Accepted formatsPDFDOCXODTRTFTXTMDEPUBPAGESZIPUp to 100 MB per file.
What you can seal
Novels
Every draft, with its own date.
Manuscripts
Seal before you submit to publishers.
Articles & essays
Journalism and columns.
Poetry
Single poems and collections.
Non-fiction
Research, guides and memoirs.
Book proposals
Synopses, outlines and samples.
Why it matters
Dated evidence
SHA-1/256/512 fingerprints and a trusted timestamp at the moment of registration.
Public verification
Anyone can check the certificate without creating an account.
Blockchain anchoring
The record is anchored on a public chain once confirmed.