Welcome to Tezos Bridge
Tezos Bridge is a secure, multisig-based cross-chain protocol that enables seamless token transfers between Ethereum and Tezos blockchains.
It provides a fully audited, open-source, and production-ready architecture for moving digital assets safely across chains without centralized custody.
What Is Tezos Bridge?
Tezos Bridge connects Ethereum and Tezos by locking tokens on one chain and minting their wrapped equivalents on the other.
This process is fully verifiable through multisignature approvals, event-based synchronization, and indexer-verifiable proofs.
When a user wraps an ERC20 token on Ethereum, the Tezos Bridge mints a corresponding FA2 token on Tezos.
When unwrapping, tokens are burned on Tezos and unlocked back on Ethereum ensuring a 1:1 backed asset representation at all times.
Core Principles
- Security First – All unwrap operations are protected by a multisignature governance system.
- Transparency – Every bridge event is emitted and indexable on-chain.
- Cross-Chain Interoperability – Supports ERC20 ↔ FA2 token transfers.
- Decentralization – Signer and Indexer components operate independently to prevent single points of failure.
- Auditability – Each step of the bridge flow can be independently verified by third-party observers.
Components Overview
The Tezos Bridge ecosystem is composed of four major parts:
| Component | Description |
|---|---|
| Signer | Off-chain signers responsible for validating cross-chain transactions and generating signatures. |
| Indexer | Service that listens to events from both chains and indexes wrap/unwrap proofs for transparency and monitoring. |
| Contracts | Smart contracts on Ethereum (TezosBridge.sol) and Tezos (tezos_bridge.arl) managing token locking, minting, and burning. |
| Frontend | User interface for initiating wraps and unwraps, viewing balances, and verifying transaction history. |
Together, these components form a trust-minimized, event-driven bridge architecture.
Getting Started
You can set up and deploy your own Tezos Bridge instance in just a few steps:
- Read the Installation Guide – learn how to configure your environment and dependencies.
- Explore the Ecosystem – understand how Signer, Indexer, and Frontend interact.
- Review the Contracts Documentation – dive into the Ethereum and Tezos smart contracts.
Documentation Structure
Here's how this documentation is organized:
- Installation – setup instructions for development and testing.
- Ecosystem – details on each system component (Signer, Indexer, Contracts, Frontend).
- About – audits, licenses, and background on the underlying protocol (BBSP).
Security & Governance
Tezos Bridge enforces strong security through:
- Multi-owner control with configurable signature thresholds.
- Fee and admin parameters adjustable only by verified administrators.
- Transparent on-chain event emission for every operation.
Before deploying to mainnet, always:
- Verify multisig owner addresses.
- Store admin keys securely (preferably hardware wallets).
- Confirm threshold and fee configurations.
About the Protocol
Tezos Bridge is powered by the Blockchain-Based Signature Protocol (BBSP) a decentralized signing and validation mechanism ensuring secure cross-chain interoperability.
Learn more in the Protocol section.
Community & Support
Need help, found a bug, or want to contribute?
- 📖 Visit the Support page
- 🧑💻 Contribute on GitHub (soon open-source release)
Tezos Bridge – Effortlessly bridging Ethereum and Tezos for secure asset transfers