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Python library for communicating with TREZOR Bitcoin Hardware Wallet

Project description

Client side implementation for Trezor-compatible Bitcoin hardware wallets.

See for more information.


also found in

#!/usr/bin/env python

from trezorlib.client import TrezorClient
from trezorlib.transport_hid import HidTransport

def main():
    # List all connected TREZORs on USB
    devices = HidTransport.enumerate()

    # Check whether we found any
    if len(devices) == 0:
        print 'No TREZOR found'

    # Use first connected device
    transport = HidTransport(devices[0])

    # Creates object for manipulating TREZOR
    client = TrezorClient(transport)

    # Print out TREZOR's features and settings
    print client.features

    # Get the first address of first BIP44 account
    # (should be the same address as shown in
    bip32_path = client.expand_path("44'/0'/0'/0/0")
    address = client.get_address('Bitcoin', bip32_path)
    print 'Bitcoin address:', address


if __name__ == '__main__':

PIN Entering

When you are asked for PIN, you have to enter scrambled PIN. Follow the numbers shown on TREZOR display and enter the their positions using the numeric keyboard mapping:

7 8 9
4 5 6
1 2 3

Example: your PIN is 1234 and TREZOR is displaying the following:

2 8 3
5 4 6
7 9 1

You have to enter: 3795

How to install (Windows)

  • Install Python 2.7 (
  • Install Cython (Windows binaries on
  • Install Microsoft Visual Studio 2008 Express
  • Add “C:\Program Files (x86)\Microsoft Visual Studio 9.0” to system PATH
  • Clone repository (using TortoiseGit) to local directory
  • Run C:\python27\python.exe install (or develop)

How to install (Debian-Ubuntu)

Project details

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