Independent evidence of existence
Three steps, under two minutes
Upload, declare, and receive a sealed certificate you can share with anyone.
- 01
Upload or hash locally
Your file is fingerprinted with SHA-1, SHA-256 and SHA-512. You choose whether we keep an encrypted copy or only the fingerprints.
- 02
Declare rights and metadata
Add title, work type, co-authors, contribution shares and the licence you intend to apply.
- 03
Receive a sealed certificate
A trusted timestamp, verification code and QR are bound to your fingerprints. Anyone can check them on the public verification page.
Protected Before You Share
Seal the file first, then send it. The certificate and its public verification link travel with the delivery, so the client, label or publisher receives the work already documented.
Supported formats and limits
Up to 100 MB per file.
PDFDOCXODTTXTMDEPUBJPGPNGTIFFWEBPSVGPSDAIMP3WAVFLACMP4MOVZIPSTL
Any other file type can still be sealed by fingerprint only.