Evaluation
Free
Build and test against the shared issuer.
- Evaluation key; test keys work from localhost
- Test keys: always-human, always-bot, expired, replayed
- Email support
- US data residency
Pay per receipt. Verifying is free.
A receipt is one action a person signed. That is the only thing we bill. Anyone can check a receipt, online or offline, without paying us or calling us.
Last updated 24 September 2026
Plans
Team
Per receipt
A monthly base, then a per-receipt rate.
- Volume tiers: the more you sign, the less each receipt costs
- Email support, next business day
- US or EU data residency
- Audit-log export as CSV
Enterprise
Annual
Your own issuer keys, your region, your paperwork.
- Dedicated issuer keys, or hold them yourself (BYOK)
- Signed DPA, security questionnaire (CAIQ or SIG Lite), SLA
- SSO / SAML for your admins; a named engineer
- Log export with RFC 9162 inclusion proofs
Every plan includes offline verification against the published keys, post-quantum hybrid signatures (Ed25519 + ML-DSA-87) and agent delegation grants. Team and Enterprise prices are quoted while early access runs; we will publish them when the first deployments close.
Questions
What counts as a receipt?
One completed signing: the person saw the action, their device signed it, and our issuer countersigned it. Verifications, key fetches, revocation checks, cancelled or failed signings and unused delegation grants are never billed. Usage is metered per UTC calendar month and exportable as CSV.
Do verifiers pay?
No. Verification is free for anyone, forever, and works offline against the published key.
What changes the price?
Three things: how many receipts you issue, whether you use the shared issuer or your own keys, and which region your data lives in. Your own keys and non-US regions add a fixed platform fee, not a per-receipt fee.
What happens if we stop paying?
Receipts you already have stay valid and verifiable. You just can't issue new ones.
Is there a token or a blockchain?
No. Checking a receipt needs the receipt and a public key, nothing else.
Where are the legal terms?
Terms, DPA, subprocessors, acceptable use and privacy. EU representative details are on the company page.
Start free
Evaluation is free, and the test keys work from localhost. Talk to us when you want a contract.