Terms & Conditions of Sale

Last updated: 13 June 2026

These terms and conditions of sale (the “Terms”) govern the sale of services offered by BlockProve SAS on blockprove.me and through its applications. Any order implies unreserved acceptance of these Terms, which the customer declares having read and accepted before payment.

1. Purpose

These Terms define the rights and obligations of the parties in connection with the sale of credits and subscriptions granting access to BlockProve’s notarization, timestamping and web-capture services. They apply to both consumer and professional customers.

2. Seller identity

The service is published by BlockProve SAS, a simplified joint-stock company with share capital of €5,000, registered under SIREN 104 965 801, with registered office at 57 Boulevard Demorieux, 72100 Le Mans, France. Contact: contact@blockprove.me.

3. Description of services

BlockProve generates a digital proof of a file or a web page: computation of a cryptographic fingerprint (SHA-256), local AES-256-GCM encryption, post-quantum signature, qualified eIDAS timestamp issued by Lleida.net (a qualified trust service provider), then permanent anchoring on the Arweave blockchain. The “web capture” service freezes the state of a web page in line with the recommendations of the AFNOR NF Z67-147 standard. One BPV credit corresponds to one permanent deposit of up to 50 MB.

4. Prices

Prices are stated in euros. The Instant plan is charged at €29 per deposit. The Confort plan is a €49 monthly subscription including stackable BPV credits. The Pro & Legal plan is subject to a custom quote. BlockProve reserves the right to change its prices at any time, it being understood that services are billed at the rates in force at the time of the order. Applicable VAT is that in force on the invoicing date.

5. Orders and account creation

Orders are placed online. In accordance with its security architecture, BlockProve creates no customer account before the payment is effectively collected: the account and the allocation of credits are activated only after the payment is confirmed by the payment provider. The customer warrants the accuracy of the information provided at the time of the order.

6. Payment

Payment is made by bank card via the provider Stripe, in a secure environment. BlockProve never has access to full card data. The order becomes final only after the payment is accepted. If declined, the order is automatically cancelled.

7. Right of withdrawal

The consumer is in principle entitled to a fourteen (14) day withdrawal period. However, the notarization, timestamping and web-capture services constitute the supply of digital content without a tangible medium whose performance begins immediately. By requesting a deposit, the customer expressly requests immediate performance of the service and acknowledges waiving the right of withdrawal for credits consumed, in accordance with Article L221-28 of the French Consumer Code. Credits purchased but not yet used remain refundable during the fourteen-day period.

8. BPV credits

A BPV credit entitles the holder to one permanent deposit of up to 50 MB. Once a deposit is made and anchored on the blockchain, the corresponding credit is consumed and is neither refundable nor reversible, the anchoring being permanent by nature. Credits included in the Confort subscription are stackable as long as the subscription is active. Each deposit is preserved for life regardless of the continuation of any subscription.

9. Confort subscription

The Confort subscription is concluded for one month and tacitly renewed for successive one-month periods. The customer may cancel at any time from their account or by writing to contact@blockprove.me, cancellation taking effect at the end of the current period. In accordance with Article L215-1 of the French Consumer Code, the customer is informed in writing of the option not to renew the subscription. Credits already acquired remain valid and deposits already made remain permanent.

10. User obligations

The customer is solely responsible for the content they deposit. They undertake not to deposit any unlawful or infringing content, anything that violates the rights of third parties or privacy, or anything contrary to public order. BlockProve, which technically cannot access the encrypted content, cannot be held liable for the use made of the service. The customer remains fully responsible for safeguarding their credentials and keys.

11. Availability and maintenance

BlockProve uses reasonable means to ensure the availability of the service. Access may nonetheless be temporarily suspended for maintenance or in the event of force majeure. The durability of proofs already anchored does not depend on the availability of BlockProve’s servers: they remain accessible directly on the Arweave blockchain.

12. Warranties and liability

BlockProve guarantees the technical integrity and timestamping of the proofs generated. It is expressly recalled that the probative value of an item remains assessed at the sole discretion of the judge, on a case-by-case basis, and that no automatic probative force can be guaranteed. BlockProve’s liability is limited to direct and foreseeable damages and may not exceed the amounts actually paid by the customer over the last twelve months.

13. Personal data

Personal data is processed in accordance with the GDPR and our privacy policy. The customer has a right of access, rectification, erasure and objection, which they may exercise at contact@blockprove.me.

14. Intellectual property

All elements of the site and applications (trademarks, logos, texts, interfaces, code) are protected by intellectual property law and remain the exclusive property of BlockProve SAS. Any unauthorized reproduction is prohibited. The customer retains all rights to the content they deposit.

15. Complaints and consumer mediation

Any complaint may be sent to contact@blockprove.me. In accordance with Articles L611-1 et seq. of the French Consumer Code, consumers may use a consumer mediator free of charge to resolve a dispute amicably. The details of the competent mediator are provided on request. Consumers may also use the European online dispute resolution platform: ec.europa.eu/consumers/odr.

16. Governing law and jurisdiction

These Terms are governed by French law. Failing an amicable resolution, any dispute shall be brought before the competent French courts. For consumer customers, statutory rules of jurisdiction apply.