Pricing
It is free. Here is what we live on.
Saying “free” and stopping there invites the obvious suspicion. So this page spends more room on the business model than on the price.
What you get, at no cost
- SHA-256 and SHA-512 fingerprints of every file
- RFC 3161 timestamp from FreeTSA.org (a free authority, not a qualified one)
- Anchoring to the Bitcoin blockchain via OpenTimestamps
- Bilingual PDF certificate, signed with RSA-SHA256
- Public verification link — no account for whoever checks it
- Full-text deposit for code, lyrics and scripts
- Web page and social post capture, in WARC format
- Batch sealing of up to 100 files
- Reuse detection by perceptual hash
- Forensic annexe with EXIF metadata
- Embeddable badge for your own site
- Inclusion in the public transparency log
- Connector for Claude and other AI agents
- Android application
What we never charge for
- Per file certified
- Not the first, not the thousandth.
- To download your certificate
- It is yours. Charging for it would be a ransom.
- To verify
- Whoever checks a seal pays nothing and needs no account.
- A subscription to use the service
- There is no "pro" plan that unlocks the basics.
- For reasonable volume
- There are hourly limits against automated abuse, not against you.
So where does the money come from?
From the legal work that sits on top of the seal, not from the seal itself: licensing agreements between creators and newsrooms, DMCA takedown handling as a designated agent, and advisory work. The free tier is not bait for a paid tier — it is the layer that makes the paid work possible, because evidence is only worth something if it was created before the dispute, and nobody creates evidence in advance if it costs money each time.