Simple Per-Document Pricing

No subscriptions. No tiers. Pay per certification with Lightning. The exact cost is always shown before you pay.

Dashboard

Upload documents through your browser

25,000+ sats
per certification + ~5,000 sats for file storage and virus scanning
Typical total: 30,000-40,000 sats
  • File storage on Google Cloud
  • Automatic virus scanning
  • Email notifications on confirmation
  • Free verification portal
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L402 API

Programmatic timestamping via Lightning

25,000+ sats
per hash timestamp (dynamic based on network fees)
  • Instant L402 payment
  • Webhook notifications
  • No account needed
  • Free verification endpoint
View API Docs

What's Included

Every certification comes with these features

Bitcoin Blockchain Anchoring

Immutable proof via OP_RETURN transaction on Bitcoin mainnet

SHA-256 Document Hashing

Industry-standard cryptographic fingerprinting for your documents

Free Verification Forever

Anyone can verify a hash against the blockchain, no account needed

Webhook Notifications

Get notified when your timestamp is broadcast and confirmed

Secure File Storage Dashboard

Encrypted storage on Google Cloud with signed download links

Virus Scanning Dashboard

All uploaded files are scanned before processing

Pricing is dynamic based on Bitcoin network congestion. The exact cost is always shown before you pay. Verification is free, forever.