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Satoshi Proof

Prove chronology of events
Use the Bitcoin network like a notary. For example if your bike is damaged you
can take a photo; then the app sends a small amount of bitcoins (a Satoshi) to a
made-up address. If you ever need to prove when the photo was taken, the app can
do so by checking the history of the Bitcoin network.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.0.4 (104) suggested Added on Oct 17, 2016

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.

    Download APK 2.6 MiB PGP Signature | Build Log

  • Version 1.0.3 (103) - Added on Jul 10, 2015

    This version requires Android 2.1 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.

    Download APK 3 MiB PGP Signature | Build Log

  • Version 1.0.1 (101) - Added on Jul 04, 2015

    This version requires Android 2.1 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.

    Download APK 3 MiB PGP Signature | Build Log