Trézór Bridge®™ — Secure Crypto Connectivity

Friendly, fast, and focused on safety

Trézór Bridge®™ acts as the trusted messenger between your hardware wallet and the websites or desktop apps you use to manage crypto. It is designed to be minimal, auditable, and resilient — providing only the connectivity you need while keeping sensitive operations on the device itself.

Whether you’re a developer integrating a dApp or a user connecting to a portfolio manager, Trézór Bridge®™ helps reduce friction without compromising security. This page explains core features, how it works, installation tips, and everyday troubleshooting in clear, practical language.

What Trézór Bridge®™ gives you

Simple flow, robust protections

The Bridge sits on your machine and listens only to local requests from the browser or apps. When a dApp needs you to sign a transaction or approve access, the request flows like this:

• Website requests access → the Bridge verifies the requesting origin and prompts the user.
• User confirms on-screen → the Bridge forwards the validated request to the hardware wallet over USB/U2F/Bluetooth depending on your device.
• Hardware wallet performs the cryptographic operation and returns the signed response, which the Bridge relays back to the web app.

At no point does the Bridge store private keys or sign operations without a physical confirmation on the device. The Bridge's responsibility is validation, transport, and a small policy layer that enforces origin + permission checks.

Install & connect in minutes

Installing Trézór Bridge®™ is straightforward: download the official installer for your OS, run the setup, and follow the prompted steps. After installation:

• Open your hardware wallet and unlock it with your PIN.
• Open the browser-based dApp you want to use and grant the connection when prompted.
• Confirm each transaction on your device screen before signing.

For power users, the Bridge exposes a small command-line flag set to adjust debugging verbosity and preferred transports. Defaults are safe for everyday users; advanced settings are documented for developers.

Quick tip: Keep your Bridge and device firmware up to date — updates include security hardening and compatibility improvements.

Design principles that protect you

Trézór Bridge®™ follows a device-first security model: the hardware wallet is the ultimate authority. Bridge enforces these key protections:

• Origin binding: every request is checked against the website origin; only approved origins may interact.
• Least privilege: permissions are scoped and temporary; dApps request only needed capabilities.
• Explicit consent: users confirm operations on the hardware device; Bridge cannot bypass user approval.
• Auditable logs: optional local logs make it easier for security researchers and users to verify activity (logs are local only).

Integrating Trézór Bridge®™

Developers can use the Bridge’s small, well-documented JSON-RPC over a local endpoint to request device actions. The API is minimal by design: enumerate devices, request public keys, and send payloads for signing.

Example (pseudocode):

// connect to local bridge
const session = await Bridge.connect({ origin: window.location.origin });
const pubkey = await session.getPublicKey({ path: "m/44'/0'/0'/0/0" });
const signature = await session.signTransaction(txPayload);

The Bridge enforces origin checks; only requests matching the web origin shown to users will be allowed. Community SDKs and wrappers exist to make onboarding even simpler.

Common issues & fixes

• Device not detected: ensure cable / Bluetooth is working and the wallet is unlocked.
• Browser blocked access: check if the browser blocked the native messaging connection — allow access in your browser settings.
• App shows 'origin mismatch': verify the website URL, clear cached Bridge sessions, and reconnect.
• Slow responses: temporarily close other USB-heavy tasks, and check for pending background updates.

If problems persist, collect the local debug logs (only when you consent) and consult the official support channels or the community forum for guidance. Logs are intentionally local; do not share sensitive contents publicly.

Short answers to frequent questions

Q: Does Bridge ever see my seed phrase?
A: No. Seed phrases and private keys remain on the hardware device at all times.

Q: Can I use Bridge on public Wi-Fi?
A: Yes — Bridge communicates locally. For safety, avoid approving transactions while using untrusted computers.

Q: Is Bridge open source?
A: Yes — the codebase is publicly auditable and regularly reviewed by independent researchers and community contributors.

Simple, transparent, and secure

Trézór Bridge®™ is built to let you interact with the decentralized web without sacrificing control. It keeps the heavy lifting on the device and provides a small, verifiable bridge that developers and users can trust. By combining clear user prompts, strict origin checks, and a minimal attack surface, Bridge makes everyday crypto tasks smoother while keeping your keys safe where they belong — on your hardware wallet.

Want to learn more? Check official documentation, review release notes, and follow security advice: stay updated, verify URLs, and always confirm sensitive operations on your device screen.