Outbox.sol Spec

initialize(address _rollup, contract IBridge _bridge) (external)

l2ToL1Sender() → address (external)

When l2ToL1Sender returns a nonzero address, the message was originated by an L2 account When the return value is zero, that means this is a system message

l2ToL1Block() → uint256 (external)

l2ToL1EthBlock() → uint256 (external)

l2ToL1Timestamp() → uint256 (external)

processOutgoingMessages(bytes sendsData, uint256[] sendLengths) (external)

executeTransaction(uint256 outboxIndex, bytes32[] proof, uint256 index, address l2Sender, address destAddr, uint256 l2Block, uint256 l1Block, uint256 l2Timestamp, uint256 amount, bytes calldataForL1) (external)

Executes a messages in an Outbox entry. Reverts if dispute period hasn't expired and

• outboxIndex: Index of OutboxEntry in outboxes array

• proof: Merkle proof of message inclusion in outbox entry

• index: Index of message in outbox entry

• l2Sender: sender if original message (i.e., caller of ArbSys.sendTxToL1)

• destAddr: destination address for L1 contract call

• l2Block: l2 block number at which sendTxToL1 call was made

• l1Block: l1 block number at which sendTxToL1 call was made

• l2Timestamp: l2 Timestamp at which sendTxToL1 call was made

• amount: value in L1 message in wei

• calldataForL1: abi-encoded L1 message data

calculateItemHash(address l2Sender, address destAddr, uint256 l2Block, uint256 l1Block, uint256 l2Timestamp, uint256 amount, bytes calldataForL1) → bytes32 (public)

calculateMerkleRoot(bytes32[] proof, uint256 path, bytes32 item) → bytes32 (public)

outboxesLength() → uint256 (public)