Trezõr brïdge — connect wallets, dApps and DeFi with confidence

Trezõr brïdge is a technical gateway and session manager that binds hardware keys to Web3 sessions. It provides phishing-resistant login, on-device approval for sensitive actions, fine-grained session scopes, and developer-friendly transports so your applications can rely on verifiable, auditable user approvals.

Get the Quickstart Developer Docs Security Notes

This is a conceptual product mockup and technical landing page. If you reuse brand names or trademarks publicly, ensure you have the appropriate rights and approvals.

What is Trezõr brïdge?

Trezõr brïdge is the connecting layer between users' hardware wallets (Trezor and compatible devices), decentralized applications, and traditional Web2 services that require verifiable identity or consent. Instead of passwords or fragile OAuth, brïdge uses hardware-held keys to sign short-lived, well-scoped challenges. The signed artifact is verified by backends and exchanged for a session token that can be monitored, audited, and revoked.

By combining on-device human verification (the device shows who/what is requesting access) with fine-grained session scopes, brïdge minimizes the surface for phishing, credential leakage, and unauthorized approvals. It's designed for exchanges, DeFi aggregators, wallets, and enterprise treasury tools that need strong non-replicable user consent.

How it works — step-by-step

Client discovers device

Browser or native app enumerates connected hardware via WebHID/WebUSB or native HID. If the user has multiple keys, the client lists registered public key identifiers.

Server issues challenge

The backend generates a signed challenge bundle — includes nonce, origin domain, requested scopes, timestamp, and a short description. The bundle is sent to the client over TLS.

On-device verification & human confirmation

The client forwards the challenge to the hardware device. The device shows an explicit summary (domain, scopes, and nonce). Only after the user confirms does the device sign the bundle.

Server verification & token issuance

Client returns the signature and public key identifier to the server. The server verifies the signature, checks freshness, enforces KYC/policy constraints, and issues a time-limited token (JWT) bound to the key and scopes.

Session lifecycle

Tokens expire quickly; refresh requires re-approval depending on scope. Servers log approvals for audit and permit prompt revocation of any key identifier.

// Simplified server flow (conceptual)
challenge = createChallenge(origin, scopes, ttl=60s)
sendToClient(challenge)
...
if verifySignature(pubKeyId, signature, challenge):
  token = issueSession(pubKeyId, scopes, ttl=15m)
  logApproval(pubKeyId, origin, scopes, issuer)
  return token
else:
  reject()

Security posture & mitigations

Trezõr brïdge enforces a defense-in-depth model:

Device protections

Keys are generated and used only within the Secure Element — they cannot be exported.
On-device human confirmation prevents host/UI spoofing.
PIN and (optional) passphrase protect against physical theft.

Server-side controls

Short token lifetimes and refresh policies.
Key enrollment workflows with attestation metadata recorded.
Revocation lists and device quarantine processes.

On-device UX is the primary anti-phishing control. Device prompts should be short, unambiguous, and show domain names and requested action in plain language.

Developer integration & API

Developers integrate brïdge with two components: client-side transport (device discovery, forwarding challenge) and server-side verification/token service. Use official transports and SDKs; avoid implementing low-level USB protocols unless necessary.

Transport

WebHID/WebUSB for browsers, native HID/BT for desktop/mobile.

Challenge format

JSON with nonce, origin, scopes, timestamp, and human message.

Verification

Standard ECDSA/Ed25519 signature checks; map pubKeyId → user account.

// Client-side (conceptual)
const challenge = await fetch('/api/challenge?origin=app.example.com')
const signature = await device.signChallenge(challenge)
await fetch('/api/verify', {method:'POST', body:{pubKeyId, signature}})

Test on staging with multiple devices, simulate revoked keys, and validate UX for retries and disconnects.

Use cases & deployment patterns

Web3 login: Replace password login with device-backed sessions for wallets and marketplaces.
DeFi approvals: Present contract-level details on-device and require explicit sign-off for high-risk calls.
Enterprise treasury: Enforce multisig approval combined with device-backed individual approvals for non-technical auditors.
Delegated services: Allow short-lived read-only sessions for analytics providers without exposing signing capabilities.

Design your UX so users can enroll backup authenticators and view active device sessions in a single management console.

FAQ

What if I lose my device?: Enroll secondary devices during setup or follow account recovery procedures defined by your service — brïdge itself does not manage secrets or seeds.
Can brïdge be used without hardware?: While designed for hardware-backed keys, hybrid models can allow software keys with weaker guarantees; this reduces phishing resistance and is not recommended for high-value flows.
Is the session portable across browsers?: Tokens are typically bound to client metadata. Portable sessions require re-approval via another enrolled device for strong security guarantees.

Next steps & resources

To pilot Trezõr brïdge: implement a minimal challenge/verify endpoint, add a client that enumerates devices and forwards challenges, and run a small user pilot focused on UX clarity for on-device prompts. Measure time-to-approve, error modes (disconnects, wrong device), and improve messages until users confidently verify devices before approval.

Developer Quickstart Read full FAQ