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Arbitrum L2 to L1 Hook

Arbitrum has it's own interface for passing messages from L2 to L1 called ArbSys which benefits from the security of the Arbitrum rollup. To provide this security as an option in Hyperlane, we created a Hook and ISM combo that can be transparently configured to reuse the native Arbitrum interface.

See the addresses page for Hook and ISM addresses.

How it works​