Factflew icon
Factflew icon

Factflew

Anonymous digital file certification app powered by the 'Unknow Your Customer' (UYC) concept and blockchain technology.

Factflew main landing page with minimal and privacy-focused design.

Cost / License

  • Pay once or Subscription
  • Proprietary

Platforms

  • Online
Transparent pricing options and explanation of local SHA-256 hash generation workflow.
Factflew service use cases and core cryptographic principles.
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Built-in certificate authenticity verification and service principles.
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Features

Properties

  1.  Based on Blockchain

Features

  1.  European data privacy

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Factflew information

  • Developed by

    LT flagFactflew

  • Licensing

    Proprietary and Commercial product.

  • Pricing

    One time purchase that costs $1, and / or subscription ranging between $12 and $585 per month.

  • Alternatives

    4 alternatives listed

  • Badge

    Get an embeddable badge for Factflew

  • Supported Languages

    • English
    • Lithuanian
    • Polish
    • German
    • Russian

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What is Factflew?

Factflew is a digital file certification service built with a strict focus on data minimization and user privacy.

Driven by the innovative "Unknow Your Customer" (UYC) architectural concept, Factflew does not require your name, email, phone number, or any identity verification for its core functionality. Your technical pseudonym is a unique FF-code stored strictly on your device.

How it works: Your source files never leave your device. The SHA-256 cryptographic hash is calculated locally in your browser using the Web Crypto API. Only this digital fingerprint is transmitted to be registered permanently with a reliable timestamp in the Polygon blockchain network.

Key Features: • True Anonymity: No registration, no tracking, and zero email collection. • Local Processing: Maximum security as files are processed entirely in your browser. • Immutable Proof: Once confirmed on-chain, your certificate provides permanent, public verification of the file's existence at that exact moment. • Flexible Pricing: Pay a flat rate of €1 per single certificate or choose device-based unlimited subscription plans.