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Documentation

Complete technical guide for developers and integrators

Trezor Bridge provides a secure communication layer between your web application and Trezor hardware wallets. This documentation covers everything you need to integrate Trezor support into your cryptocurrency application, from basic setup to advanced features.

Before you begin, ensure that users have Trezor Bridge installed on their system. The Bridge acts as a local service that facilitates secure communication between browsers and Trezor devices without compromising security.

Prerequisites

  • Trezor Bridge installed and running on the user's system
  • Modern web browser with WebUSB support (Chrome 61+, Firefox 55+)
  • HTTPS-enabled website (required for secure communication)
  • Basic knowledge of JavaScript and asynchronous programming

Quick Start

// Install Trezor Connect
npm install trezor-connect

// Initialize in your application
import TrezorConnect from 'trezor-connect';

TrezorConnect.init({
  lazyLoad: true,
  manifest: {
    email: 'your-email@example.com',
    appUrl: 'https://yourapp.com'
  }
});

Integration Guide

Learn how to integrate Trezor hardware wallet support into your application with step-by-step guides for different frameworks and use cases.

Integration Steps

1

Install Dependencies

Add Trezor Connect to your project and configure the manifest file with your app information.

2

Initialize Connection

Initialize TrezorConnect with your app manifest and handle device detection events.

3

Implement Wallet Functions

Add support for address derivation, transaction signing, and message verification.

4

Handle Errors

Implement proper error handling for device disconnection, user cancellation, and other scenarios.

React Integration

// Custom hook for Trezor
import { useState, useEffect } from 'react';
import TrezorConnect from 'trezor-connect';

export const useTrezor = () => {
  const [connected, setConnected] = useState(false);
  // Implementation...
};

Vue.js Integration

// Vue 3 Composition API
import { ref, onMounted } from 'vue';
import TrezorConnect from 'trezor-connect';

export default {
  setup() {
    const device = ref(null);
    // Implementation...
  }
};

Code Examples

Ethereum Transaction Example

// Sign Ethereum transaction
const ethereumTx = await TrezorConnect.ethereumSignTransaction({
  path: "m/44'/60'/0'/0/0",
  transaction: {
    to: '0x7314e0f1c0e28474bdb6be3e2c3e0453255188f8',
    value: '0xf4240', // 1000000 wei
    gasPrice: '0x14',
    gasLimit: '0x5208',
    nonce: '0x0',
    chainId: 1
  }
});

if (ethereumTx.success) {
  const signedTx = ethereumTx.payload;
  // Broadcast transaction
}

Message Signing Example

// Sign a message for verification
const messageSignature = await TrezorConnect.signMessage({
  path: "m/44'/0'/0'/0/0",
  message: 'Hello Trezor!',
  coin: 'btc'
});

if (messageSignature.success) {
  const signature = messageSignature.payload.signature;
  const address = messageSignature.payload.address;
  console.log(`Signed by: ${address}`);
}

Error Handling Pattern

// Comprehensive error handling
try {
  const result = await TrezorConnect.getAddress({
    path: "m/49'/0'/0'/0/0",
    coin: 'btc'
  });

  if (result.success) {
    return result.payload.address;
  } else {
    // Handle specific errors
    switch (result.payload.code) {
      case 'Device_CallInProgress':
        throw new Error('Device busy');
      case 'Device_Disconnected':
        throw new Error('Device disconnected');
      default:
        throw new Error(result.payload.error);
    }
  }
} catch (error) {
  console.error('Trezor error:', error.message);
}

Advanced Topics

Custom Coin Support

Add support for custom cryptocurrencies by defining coin parameters and network settings.

Learn more

Multisig Wallets

Implement multi-signature wallet functionality with Trezor devices for enhanced security.

Learn more

Passphrase Wallets

Handle BIP39 passphrase-protected wallets and multiple wallet instances on a single device.

Learn more

Firmware Updates

Guide users through firmware updates and handle version compatibility in your application.

Learn more

Security Considerations

  • • Always validate transaction details on the device screen
  • • Implement proper session management and timeouts
  • • Use HTTPS for all Bridge communications
  • • Never store private keys or sensitive data in web storage
  • • Validate all user inputs and sanitize display data

SDK & Libraries

JavaScript/TypeScript

Official Trezor Connect library for web applications

View on GitHub →

Python

Python library for server-side Trezor integration

View on GitHub →

Go

Go implementation for blockchain applications

View on GitHub →