I certify a specific file.
A contract, a photograph, a creative work, an inventory report or an important document: choose per-certificate certification, with no commitment.
→ Essential 5 € or Premium 19 €
A plan suited to every use
Choose simply.
Choose simply.
Certify without counting.
Every plan protects the integrity of your files without sending them and systematically provides two complementary fingerprints: SHA-256 and SHA3-512. Essential delivers the immediate proof that most uses need. Premium adds a second, independent time-based assurance, anchored in the Bitcoin blockchain.
✓Files never sent
✓PDF certificate with QR
✓Taxes handled by Paddle
Occasional need?Simply certify per certificate, with no subscription.
DfinA VaultPlans
Two levels of proof
Choose the frequency, then the level of independence you want.
Essential unlimitedIntegrity + DfinA date + seal
49 €/ year
Premium annual+ Bitcoin blockchain anchoring
149 €/ year
Premium is a double assurance. It is only necessary when you want time-based proof that can be verified independently of DfinA.
Regular use?The unlimited plans include the seal and the batch processing tools.
The choice in seconds
Start with your use, not the technology.
Two decisions are enough: do you certify occasionally or regularly? Do you want a date attested by DfinA, or a second time-based proof anchored in an independent public infrastructure?
I want to certify without counting.
The unlimited plan naturally becomes simpler and gives access to the seal, batch certification and the organized ZIP archive.
→ Essential unlimited · 49 €/year
I want a double time-based assurance.
Premium adds to the DfinA date an anchoring in the Bitcoin blockchain, independently verifiable with the .ots proof file.
→ Premium per certificate or unlimited
Choice assistant
Which situation fits you?
Select your main need. The recommendation appears immediately, with no complicated questionnaire.
Our recommendation
Per certificate
Choose Essential at 5 € for immediate proof, or Premium at 19 € when you also want anchoring in the Bitcoin blockchain.
Certify a file
The immediate level of proof
Essential: simple, fast and sufficient for most uses.
Both fingerprints are computed on your device: SHA-256, from the SHA-2 family, and SHA3-512, based on a different cryptographic architecture and producing a longer fingerprint. This diversification reduces dependence on a single algorithm. You then receive a PDF certificate with a QR code, a public verification page and a date attested by DfinA.
A double cryptographic safeguard included everywhere
The double fingerprint is not a Premium option: it is provided for every certification, per certificate as well as by subscription. SHA-256 and SHA3-512 belong to two different design families and produce fingerprints of 256 and 512 bits respectively.
Essential per certificate
For an occasional, clearly identified need.
5 €/ certificate
One-time payment
- ✓PDF certificate with QR code
- ✓ Double fingerprint SHA-256 + SHA3-512 computed locally
- ✓Public verification page
- ✓Date attested by DfinA
Essential unlimited
To certify freely all year long and use the advanced features.
49 €/ year
Unlimited certifications · fair use
- ✓Everything in Essential included
- ✓ Double fingerprint SHA-256 + SHA3-512 computed locally
- ✓Personal attributable seal
- ✓Batch certification and verification
- ✓Creation of an organized ZIP archive
- ✓Cancelable renewal at any time
The simplest benchmarkFrom 10 certifications a year, the 49 € subscription becomes less expensive than ten certificates at 5 €, while giving access to the seal and the batch features.
No file sentThe computation stays local, whatever the plan.
Public verificationThe recipient checks the certificate and its file.
Immediate useThe certificate is generated as soon as certification is done.
Overview
All the plans, at a single glance.
The essential difference is not about confidentiality: your files always stay on your device. It is about frequency of use, advanced features and the optional addition of an independent anchoring.
| Feature | Essential 5 € | Essential unlimited 49 €/year | Premium 19 € | Premium monthly 19 €/month | Premium annual 149 €/year |
|---|---|---|---|---|---|
| Double fingerprint SHA-256 + SHA3-512 computed locally | ✓ | ✓ | ✓ | ✓ | ✓ |
| PDF certificate + QR | ✓ | ✓ | ✓ | ✓ | ✓ |
| Date attested by DfinA | ✓ | ✓ | ✓ | ✓ | ✓ |
| Unlimited certifications | — | ✓ | — | ✓ | ✓ |
| Personal seal | — | ✓ | — | ✓ | ✓ |
| Batch certification and verification | — | ✓ | — | ✓ | ✓ |
| Organized ZIP archive | — | ✓ | — | ✓ | ✓ |
| Anchoring in the Bitcoin blockchain | — | — | ✓ | ✓ | ✓ |
| .ots proof file | — | — | ✓ | ✓ | ✓ |
| Priority support | — | — | — | — | ✓ |
✓ included— not includedThe Premium monthly and annual prices shown are launch prices.
Still hesitating?
For most regular uses, start with Essential unlimited. Choose Premium when independent anchoring brings real value to your documents.
Specific needs
Companies, volumes and integrations.
For a larger-scale deployment, DfinA Vault can adapt the volume, the technical integration and the presentation of the service to your organization.
Tailored offer
Contact us
An infrastructure adapted to your brand.
For companies, platforms, firms, associations or networks that want to certify large volumes or integrate DfinA Vault into their own journey.
Volume pricingA structure adapted to the level of use.
APIIntegration into your processes or applications.
White-labelAn experience presented under your identity.
Dedicated supportTechnical and operational assistance.
Payment & billing
Simplified international billing.
Secure payments by PaddlePaddle acts as Merchant of Record and processes the payment.
Taxes calculated for your countryVAT and applicable taxes are handled at the time of payment.
Invoice issued by PaddleYou receive the receipt corresponding to your purchase or subscription.
Subscriptions under controlRenewal can be canceled at any time from the subscription management.
Service performed immediately
The certification is performed when the certificate is generated and, in Premium, when the fingerprint is submitted for anchoring.
Launch prices
The Premium monthly and annual prices are introductory prices. Any change must be displayed before any new commitment.
Transparent terms
Refund policy and terms and conditions remain accessible before purchase.
Ready to date your files?
The computation is local, the file never leaves your device and the certificate stays verifiable at any time.