Pricing
Simple pricing. Start free, forever.
Every plan uses the same real cryptography and the same two-endpoint API. Bigger plans just lift the limits.
Hobby Seal
$0 / forever
- 5 stamps per day
- .txt files up to 16 KB
- Real HMAC-SHA-256 receipts
- Unlimited verifies
- Community support
Most popular
Business Seal
$29 / month
- 10,000 stamps per month
- Larger file uploads
- Priority notarization
- Unlimited verifies
- Email support
Sovereign Seal
Custom
- Everything in Business
- Guaranteed SLA
- On-prem deployment
- Audit-grade logging
- Dedicated support & compliance
The Free tier is available immediately. Paid tiers are on our roadmap — no card is required today, and you will never be charged on the demonstration service.
Pricing FAQ
Is the free tier really free?
Yes. No card, no trial clock. 5 seals a day, forever.
What counts as a “stamp”?
One successful call to /v1/stamp. Verifies are always free and unlimited.
Can I upgrade later?
Join the waitlist and we’ll lift your limits — same key, same code.
Do you store my files?
Never. Send a hash and your content stays on your machine. See the docs.