KeyWitness

Prove your words are yours

Free · Designed for iPad. Not verified for macOS.

Cryptographic proof of human input. Every sealed message carries verifiable evidence it was typed by a real person on a real device. KeyWitness is a keyboard that creates cryptographic proof your text was typed by a human on a real device — not pasted, not generated, not AI. HOW IT WORKS Type on the KeyWitness keyboard. It captures your unique keystroke rhythm — timing, position, pressure. Tap Seal, and the keyboard builds a W3C Verifiable Credential signed by your device's Secure Enclave. Share the link. Anyone can verify the proof in their browser — no app needed, no trust required. WHAT IT PROVES • Human input — keystroke biometrics that can't be faked • Real device — Apple App Attest confirms a genuine, unmodified iPhone • Content integrity — Ed25519 signature locks the text to the moment • Owner confirmation — optional Face ID proves the phone's owner approved it PRIVACY BY DESIGN Your text is encrypted with AES-256-GCM before it ever leaves your device. The encryption key lives in the URL fragment — our server stores an encrypted blob it cannot read. No accounts, no tracking, no analytics. OPEN STANDARDS Built on W3C Verifiable Credentials 2.0, did:key, eddsa-jcs-2022, and BitstringStatusList. Any conforming verifier can validate a KeyWitness credential. Fully open source.

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The developer, MagicSeth Productions, 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 Not Collected

    The developer does not collect any data from this app.

    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
    Seth Raphael
    Size
    5 MB
    Category
    Utilities
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • iPad
      Requires iPadOS 16.0 or later.
    • Mac
      Requires macOS 13.0 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 Seth Raphael
  • Developer Website
  • Privacy Policy

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