IArbToken.sol Spec

bridgeMint(address account, uint256 amount) (external)

should increase token supply by amount, and should (probably) only be callable by the L1 bridge.

bridgeBurn(address account, uint256 amount) (external)

should decrease token supply by amount, and should (probably) only be callable by the L1 bridge.

l1Address() → address (external)

Returns: address: of layer 1 token