BlockProve – Certified Proof

Timestamped photos & documents

Free · Designed for iPad. Not verified for macOS.

A photo can be disputed. A BlockProve proof can be verified. A landlord keeping your deposit, an insurer disputing a claim, a design copied, harassing messages deleted: once the dispute starts, it is too late to create evidence. With BlockProve, you create it yourself, right away, from your phone or your computer. CAPTURE OR IMPORT • Certified photo, video and audio, captured inside the app • Import any document: PDF, contract, image, ZIP archive • Several files grouped into a single deposit • GPS location added if you allow it SEALED ON YOUR DEVICE • AES-256-GCM encryption before anything is sent: no one can read your files, not even us • Post-quantum ML-DSA signature (NIST FIPS 204), designed to withstand tomorrow's computers • Qualified eIDAS timestamp (RFC 3161) from a European trust service provider: the date is presumed accurate throughout the European Union STORED FOREVER ON THE BLOCKCHAIN • Anchored on the Arweave blockchain, built for permanent storage • "Full archive" mode: the encrypted file itself is kept on-chain, not just its fingerprint • Your proofs remain accessible and verifiable even if BlockProve ever disappeared A CERTIFICATE READY TO SHOW • PDF certificate: SHA-256 fingerprint, transaction ID, qualified date and time • Free verification by anyone, without an account, using open-source tools • PCAP proof protocol, with a public specification FOR PROFESSIONALS • Web capture report on Mac and Windows following the NF Z67-147 method: environment audit, browsing, captures, sealing • Shared workspaces, end-to-end encrypted, for your team's case files • Prior art for your designs, contracts, plans and source code YOU KEEP THE KEYS • Your identity relies on a 12-word phrase (BIP-39) generated on your device • Your private keys never leave your device • Encrypted local vault, biometric unlock, mandatory two-factor authentication SIMPLE Your first deposit is free. 1 BPV credit = 1 deposit kept for life (up to 30 MB), with no subscription needed to keep your proofs. BlockProve SAS, a French start-up based in Le Mans, supported by Le Mans Innovation. The weight of evidence is assessed by the judge. BlockProve provides technical guarantees of integrity and date; the app does not replace legal advice.

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Security update: the secure connection to our servers has been strengthened. Stability improvements.

Version 1.0.1

The developer, aziz lakhal, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Contact Info
    • User Content
    • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
aziz lakhal
Size
74.3 MB
Category
Productivity
Compatibility
Requires iOS 15 or later.
  • iPhone
    Requires iOS 15 or later.
  • iPad
    Requires iPadOS 15 or later.
  • iPod touch
    Requires iOS 15 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
Copyright
© 2026 BlockProve SAS
  • Developer Website
  • Privacy Policy