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How to add your Arbitrum chain to Arbitrum's bridge

This how-to will walk you through the process of adding your Arbitrum chain to the Arbitrum bridge. There's one section for mainnet Arbitrum chains, and another for local testnet Arbitrum chains. You can access either section using the links on the right column.

Request adding a mainnet Arbitrum chain to the Arbitrum bridge​

Mainnet Arbitrum chains can be added to the Arbitrum Bridge by filling out this form.

Once receiving your request, our team will review and apply internal criteria to include your chain in the bridge. Here are some of the criteria that a chain must follow to be added to the bridge:

  • The use case must fall within existing legal and marketing guidelines
  • The core rollup / token bridge contracts must not have been modified, except the cases where modifications have been done with a certified partnership and communicated to Offchain Labs
  • The infrastructure and core contracts are hosted by one of our partnered RaaS teams

Add a local testnet Arbitrum chain to the Arbitrum bridge​

To add a testnet Arbitrum chain to the Arbitrum bridge you can submit a request at the same GitHub link and indicate that it is a testnet (https://github.com/OffchainLabs/arbitrum-token-bridge/issues/new/choose).

Congratulations! Your chain should now appear in both the network dropdown in the top navigation pane, and as an option in the bridging UI directly.