https://github.com/offchainlabs/token-bridge-contracts
Arbitrum token bridge and peripheral contracts
https://github.com/offchainlabs/token-bridge-contracts
Last synced: 8 months ago
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Arbitrum token bridge and peripheral contracts
- Host: GitHub
- URL: https://github.com/offchainlabs/token-bridge-contracts
- Owner: OffchainLabs
- License: apache-2.0
- Created: 2022-08-11T09:30:51.000Z (almost 4 years ago)
- Default Branch: main
- Last Pushed: 2025-10-16T09:11:22.000Z (8 months ago)
- Last Synced: 2025-10-19T09:39:52.057Z (8 months ago)
- Language: Solidity
- Size: 166 MB
- Stars: 177
- Watchers: 22
- Forks: 156
- Open Issues: 18
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Metadata Files:
- Readme: README.md
- License: LICENSE
- Audit: audits/ConsenSys_Diligence_Arbitrum_Contracts_11_2021.pdf
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README
# Arbitrum Token Bridge Contracts
The Arbitrum Token Bridge is a decentralized application that uses [Nitro's](https://github.com/OffchainLabs/nitro) arbitrary cross-chain messaging system to implement an ERC20 token bridge between an EVM compatible base-chain and an Arbitrum chain.
All public Arbitrum chains include a [canonical token bridge deployment](https://developer.arbitrum.io/useful-addresses#token-bridge).
The Token Bridge includes "Gateway" contracts — pairs of contracts that implement a particular token-bridging flow — as well as "Gateway Router" contracts, which map tokens to their respective gateways.
See the [developer documentation](https://developer.arbitrum.io/asset-bridging) for more info.
See security audit reports [here](./audits).
This repository is offered under the Apache 2.0 license. See [LICENSE](https://github.com/OffchainLabs/token-bridge-contracts/blob/main/LICENSE) for details.
## Deployment
Check [this doc](./docs/deployment.md) for instructions on deployment and verification of token bridge.
## Contact
Discord: [Arbitrum](https://discord.com/invite/5KE54JwyTs)
Twitter: [Arbitrum](https://twitter.com/arbitrum)