Two plans
Essential attests integrity and a DfinA date. Premium adds a date engraved in the Bitcoin blockchain, verifiable by anyone. Prices in USD, payments secured by Paddle.
File integrity and a timestamp attested by DfinA. Lightweight and instant, no blockchain anchoring.
- PDF certificate with QR
- Public verification page
- SHA-256 computed on your device
- Date attested by DfinA
- Unlimited certifications
- PDF certificate + public verification
- Date attested by DfinA
- Attributable seal
- Cancel anytime
Everything in Essential, plus a date engraved in the Bitcoin blockchain, verifiable by anyone, without us. The finalized proof file (.ots) is emailed back to you once the block is confirmed on the blockchain.
- Everything in Essential
- Anchoring on the Bitcoin blockchain
- Proof file (.ots) by email
- Independent verification, without us
- Unlimited blockchain certifications
- Proof file by email
- Certify without counting
- Attributable seal
- Cancel anytime
- Unlimited blockchain certifications
- Proof file by email
- Priority support
- Attributable seal
- Cancel anytime
Volume, API, integration into your brand (reseller). Let's talk.
- Volume pricing
- White label / reseller
- API access
- Dedicated support
Payments are processed by Paddle.com, acting as Merchant of Record and issuing your invoice. Applicable taxes (VAT, etc.) are calculated and handled by Paddle based on your country.
Accepted methods: major bank cards and solutions supported by Paddle.
The service is performed when the certificate is generated and the fingerprint is submitted for anchoring. Launch prices are introductory and may change.
See our refund policy and our terms of service.
Ready to date your files?
Computation is local, the file never leaves your device, and the certificate is verifiable at any time.
Certify a file