{
  "address": "0xa88e220c7FC7F0D845D2624a5dF1DfD6874B9a44",
  "abi": [
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      "inputs": [
        {
          "internalType": "address",
          "name": "_libAddressManager",
          "type": "address"
        },
        {
          "internalType": "uint256",
          "name": "_forceInclusionPeriodSeconds",
          "type": "uint256"
        },
        {
          "internalType": "uint256",
          "name": "_forceInclusionPeriodBlocks",
          "type": "uint256"
        },
        {
          "internalType": "uint256",
          "name": "_maxTransactionGasLimit",
          "type": "uint256"
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      ],
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      "type": "constructor"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": false,
          "internalType": "uint256",
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        {
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          "internalType": "uint256",
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        },
        {
          "indexed": false,
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          "type": "uint256"
        }
      ],
      "name": "QueueBatchAppended",
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    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": false,
          "internalType": "uint256",
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          "type": "uint256"
        },
        {
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          "internalType": "uint256",
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        {
          "indexed": false,
          "internalType": "uint256",
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      ],
      "name": "SequencerBatchAppended",
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    },
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          "indexed": true,
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        },
        {
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        {
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        {
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          "name": "_prevTotalElements",
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        {
          "indexed": false,
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      ],
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    {
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      "inputs": [
        {
          "indexed": false,
          "internalType": "address",
          "name": "_l1TxOrigin",
          "type": "address"
        },
        {
          "indexed": false,
          "internalType": "address",
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          "type": "address"
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        {
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        },
        {
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        },
        {
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          "internalType": "uint256",
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          "type": "uint256"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "_timestamp",
          "type": "uint256"
        }
      ],
      "name": "TransactionEnqueued",
      "type": "event"
    },
    {
      "inputs": [],
      "name": "L2_GAS_DISCOUNT_DIVISOR",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
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    },
    {
      "inputs": [],
      "name": "MAX_ROLLUP_TX_SIZE",
      "outputs": [
        {
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        }
      ],
      "stateMutability": "view",
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    },
    {
      "inputs": [],
      "name": "MIN_ROLLUP_TX_GAS",
      "outputs": [
        {
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        }
      ],
      "stateMutability": "view",
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    },
    {
      "inputs": [
        {
          "internalType": "uint256",
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      ],
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    {
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      "type": "function"
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    {
      "inputs": [],
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      "outputs": [
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          "type": "address"
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      ],
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    {
      "inputs": [
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        {
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        },
        {
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      ],
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      "outputs": [
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        {
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      ],
      "stateMutability": "view",
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    {
      "inputs": [],
      "name": "getLastBlockNumber",
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          "type": "uint40"
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      ],
      "stateMutability": "view",
      "type": "function"
    },
    {
      "inputs": [],
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      ],
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    {
      "inputs": [],
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      ],
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        }
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      "inputs": [
        {
          "internalType": "uint256",
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          "type": "uint256"
        }
      ],
      "name": "getQueueElement",
      "outputs": [
        {
          "components": [
            {
              "internalType": "bytes32",
              "name": "transactionHash",
              "type": "bytes32"
            },
            {
              "internalType": "uint40",
              "name": "timestamp",
              "type": "uint40"
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            {
              "internalType": "uint40",
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              "type": "uint40"
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          ],
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          "name": "_element",
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      ],
      "stateMutability": "view",
      "type": "function"
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    {
      "inputs": [],
      "name": "getQueueLength",
      "outputs": [
        {
          "internalType": "uint40",
          "name": "",
          "type": "uint40"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    },
    {
      "inputs": [],
      "name": "getTotalBatches",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "_totalBatches",
          "type": "uint256"
        }
      ],
      "stateMutability": "view",
      "type": "function"
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    {
      "inputs": [],
      "name": "getTotalElements",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "_totalElements",
          "type": "uint256"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    },
    {
      "inputs": [],
      "name": "libAddressManager",
      "outputs": [
        {
          "internalType": "contract Lib_AddressManager",
          "name": "",
          "type": "address"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    },
    {
      "inputs": [],
      "name": "maxTransactionGasLimit",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    },
    {
      "inputs": [],
      "name": "queue",
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        {
          "internalType": "contract iOVM_ChainStorageContainer",
          "name": "",
          "type": "address"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    },
    {
      "inputs": [
        {
          "internalType": "string",
          "name": "_name",
          "type": "string"
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      ],
      "name": "resolve",
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        {
          "internalType": "address",
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          "type": "address"
        }
      ],
      "stateMutability": "view",
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    },
    {
      "inputs": [
        {
          "components": [
            {
              "internalType": "uint256",
              "name": "timestamp",
              "type": "uint256"
            },
            {
              "internalType": "uint256",
              "name": "blockNumber",
              "type": "uint256"
            },
            {
              "internalType": "enum Lib_OVMCodec.QueueOrigin",
              "name": "l1QueueOrigin",
              "type": "uint8"
            },
            {
              "internalType": "address",
              "name": "l1TxOrigin",
              "type": "address"
            },
            {
              "internalType": "address",
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              "type": "address"
            },
            {
              "internalType": "uint256",
              "name": "gasLimit",
              "type": "uint256"
            },
            {
              "internalType": "bytes",
              "name": "data",
              "type": "bytes"
            }
          ],
          "internalType": "struct Lib_OVMCodec.Transaction",
          "name": "_transaction",
          "type": "tuple"
        },
        {
          "components": [
            {
              "internalType": "bool",
              "name": "isSequenced",
              "type": "bool"
            },
            {
              "internalType": "uint256",
              "name": "queueIndex",
              "type": "uint256"
            },
            {
              "internalType": "uint256",
              "name": "timestamp",
              "type": "uint256"
            },
            {
              "internalType": "uint256",
              "name": "blockNumber",
              "type": "uint256"
            },
            {
              "internalType": "bytes",
              "name": "txData",
              "type": "bytes"
            }
          ],
          "internalType": "struct Lib_OVMCodec.TransactionChainElement",
          "name": "_txChainElement",
          "type": "tuple"
        },
        {
          "components": [
            {
              "internalType": "uint256",
              "name": "batchIndex",
              "type": "uint256"
            },
            {
              "internalType": "bytes32",
              "name": "batchRoot",
              "type": "bytes32"
            },
            {
              "internalType": "uint256",
              "name": "batchSize",
              "type": "uint256"
            },
            {
              "internalType": "uint256",
              "name": "prevTotalElements",
              "type": "uint256"
            },
            {
              "internalType": "bytes",
              "name": "extraData",
              "type": "bytes"
            }
          ],
          "internalType": "struct Lib_OVMCodec.ChainBatchHeader",
          "name": "_batchHeader",
          "type": "tuple"
        },
        {
          "components": [
            {
              "internalType": "uint256",
              "name": "index",
              "type": "uint256"
            },
            {
              "internalType": "bytes32[]",
              "name": "siblings",
              "type": "bytes32[]"
            }
          ],
          "internalType": "struct Lib_OVMCodec.ChainInclusionProof",
          "name": "_inclusionProof",
          "type": "tuple"
        }
      ],
      "name": "verifyTransaction",
      "outputs": [
        {
          "internalType": "bool",
          "name": "",
          "type": "bool"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    }
  ],
  "transactionHash": "0x7d26b7cfd3f595bebab4d22ca651feb308c3f95e475a8d2e80f4b06ffefed461",
  "receipt": {
    "to": null,
    "from": "0xd033f09cB85621F98F7A84C64dB381ac16Eff818",
    "contractAddress": "0xa88e220c7FC7F0D845D2624a5dF1DfD6874B9a44",
    "transactionIndex": 102,
    "gasUsed": "2831026",
    "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "blockHash": "0xb4aa0366ff1e4f3f49f77d89d9025e4102a8cd2a0b3fd64cd1c1a13b0a7c98f6",
    "transactionHash": "0x7d26b7cfd3f595bebab4d22ca651feb308c3f95e475a8d2e80f4b06ffefed461",
    "logs": [],
    "blockNumber": 12410807,
    "cumulativeGasUsed": "8803160",
    "status": 1,
    "byzantium": true
  },
  "args": [
    "0x668E5b997b9aE88a56cd40409119d4Db9e6d752E",
    15769999,
    1213076,
    9000000
  ],
  "solcInputHash": "f2bdab652d5102f5f11e78dae866798d",
  "metadata": 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Lib_OVMCodec.QueueOrigin\",\"name\":\"l1QueueOrigin\",\"type\":\"uint8\"},{\"internalType\":\"address\",\"name\":\"l1TxOrigin\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"entrypoint\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"gasLimit\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"internalType\":\"struct Lib_OVMCodec.Transaction\",\"name\":\"_transaction\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bool\",\"name\":\"isSequenced\",\"type\":\"bool\"},{\"internalType\":\"uint256\",\"name\":\"queueIndex\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"timestamp\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"blockNumber\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"txData\",\"type\":\"bytes\"}],\"internalType\":\"struct 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Lib_OVMCodec.ChainInclusionProof\",\"name\":\"_inclusionProof\",\"type\":\"tuple\"}],\"name\":\"verifyTransaction\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"The Canonical Transaction Chain (CTC) contract is an append-only log of transactions which must be applied to the rollup state. It defines the ordering of rollup transactions by writing them to the 'CTC:batches' instance of the Chain Storage Container. The CTC also allows any account to 'enqueue' an L2 transaction, which will require that the Sequencer will eventually append it to the rollup state. If the Sequencer does not include an enqueued transaction within the 'force inclusion period', then any account may force it to be included by calling appendQueueBatch(). Compiler used: solc Runtime target: EVM\",\"kind\":\"dev\",\"methods\":{\"appendSequencerBatch()\":{\"details\":\"This function uses a custom encoding scheme for efficiency reasons. .param _shouldStartAtElement Specific batch we expect to start appending to. .param _totalElementsToAppend Total number of batch elements we expect to append. .param _contexts Array of batch contexts. .param _transactionDataFields Array of raw transaction data.\"},\"batches()\":{\"returns\":{\"_0\":\"Reference to the batch storage container.\"}},\"enqueue(address,uint256,bytes)\":{\"params\":{\"_data\":\"Transaction data.\",\"_gasLimit\":\"Gas limit for the enqueued L2 transaction.\",\"_target\":\"Target L2 contract to send the transaction to.\"}},\"getLastBlockNumber()\":{\"returns\":{\"_0\":\"Blocknumber for the last transaction.\"}},\"getLastTimestamp()\":{\"returns\":{\"_0\":\"Timestamp for the last transaction.\"}},\"getNextQueueIndex()\":{\"returns\":{\"_0\":\"Index for the next queue element.\"}},\"getNumPendingQueueElements()\":{\"returns\":{\"_0\":\"Number of pending queue elements.\"}},\"getQueueElement(uint256)\":{\"params\":{\"_index\":\"Index of the queue element to access.\"},\"returns\":{\"_element\":\"Queue element at the given index.\"}},\"getQueueLength()\":{\"returns\":{\"_0\":\"Length of the queue.\"}},\"getTotalBatches()\":{\"returns\":{\"_totalBatches\":\"Total submitted batches.\"}},\"getTotalElements()\":{\"returns\":{\"_totalElements\":\"Total submitted elements.\"}},\"queue()\":{\"returns\":{\"_0\":\"Reference to the queue storage container.\"}},\"resolve(string)\":{\"params\":{\"_name\":\"Name to resolve an address for.\"},\"returns\":{\"_0\":\"Address associated with the given name.\"}},\"verifyTransaction((uint256,uint256,uint8,address,address,uint256,bytes),(bool,uint256,uint256,uint256,bytes),(uint256,bytes32,uint256,uint256,bytes),(uint256,bytes32[]))\":{\"params\":{\"_batchHeader\":\"Header of the batch the transaction was included in.\",\"_inclusionProof\":\"Inclusion proof for the provided transaction chain element.\",\"_transaction\":\"Transaction to verify.\",\"_txChainElement\":\"Transaction chain element corresponding to the transaction.\"},\"returns\":{\"_0\":\"True if the transaction exists in the CTC, false if not.\"}}},\"title\":\"OVM_CanonicalTransactionChain\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{\"appendQueueBatch(uint256)\":{\"notice\":\"Appends a given number of queued transactions as a single batch. param _numQueuedTransactions Number of transactions to append.\"},\"appendSequencerBatch()\":{\"notice\":\"Allows the sequencer to append a batch of transactions.\"},\"batches()\":{\"notice\":\"Accesses the batch storage container.\"},\"enqueue(address,uint256,bytes)\":{\"notice\":\"Adds a transaction to the queue.\"},\"getLastBlockNumber()\":{\"notice\":\"Returns the blocknumber of the last transaction.\"},\"getLastTimestamp()\":{\"notice\":\"Returns the timestamp of the last transaction.\"},\"getNextQueueIndex()\":{\"notice\":\"Returns the index of the next element to be enqueued.\"},\"getNumPendingQueueElements()\":{\"notice\":\"Get the number of queue elements which have not yet been included.\"},\"getQueueElement(uint256)\":{\"notice\":\"Gets the queue element at a particular index.\"},\"getQueueLength()\":{\"notice\":\"Retrieves the length of the queue, including both pending and canonical transactions.\"},\"getTotalBatches()\":{\"notice\":\"Retrieves the total number of batches submitted.\"},\"getTotalElements()\":{\"notice\":\"Retrieves the total number of elements submitted.\"},\"queue()\":{\"notice\":\"Accesses the queue storage container.\"},\"resolve(string)\":{\"notice\":\"Resolves the address associated with a given name.\"},\"verifyTransaction((uint256,uint256,uint8,address,address,uint256,bytes),(bool,uint256,uint256,uint256,bytes),(uint256,bytes32,uint256,uint256,bytes),(uint256,bytes32[]))\":{\"notice\":\"Verifies whether a transaction is included in the chain.\"}},\"version\":1}},\"settings\":{\"compilationTarget\":{\"contracts/optimistic-ethereum/OVM/chain/OVM_CanonicalTransactionChain.sol\":\"OVM_CanonicalTransactionChain\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\",\"useLiteralContent\":true},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/access/Ownable.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity >=0.6.0 <0.8.0;\\n\\nimport \\\"../utils/Context.sol\\\";\\n/**\\n * @dev Contract module which provides a basic access control mechanism, where\\n * there is an account (an owner) that can be granted exclusive access to\\n * specific functions.\\n *\\n * By default, the owner account will be the one that deploys the contract. This\\n * can later be changed with {transferOwnership}.\\n *\\n * This module is used through inheritance. It will make available the modifier\\n * `onlyOwner`, which can be applied to your functions to restrict their use to\\n * the owner.\\n */\\nabstract contract Ownable is Context {\\n    address private _owner;\\n\\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\\n\\n    /**\\n     * @dev Initializes the contract setting the deployer as the initial owner.\\n     */\\n    constructor () internal {\\n        address msgSender = _msgSender();\\n        _owner = msgSender;\\n        emit OwnershipTransferred(address(0), msgSender);\\n    }\\n\\n    /**\\n     * @dev Returns the address of the current owner.\\n     */\\n    function owner() public view virtual returns (address) {\\n        return _owner;\\n    }\\n\\n    /**\\n     * @dev Throws if called by any account other than the owner.\\n     */\\n    modifier onlyOwner() {\\n        require(owner() == _msgSender(), \\\"Ownable: caller is not the owner\\\");\\n        _;\\n    }\\n\\n    /**\\n     * @dev Leaves the contract without owner. It will not be possible to call\\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\\n     *\\n     * NOTE: Renouncing ownership will leave the contract without an owner,\\n     * thereby removing any functionality that is only available to the owner.\\n     */\\n    function renounceOwnership() public virtual onlyOwner {\\n        emit OwnershipTransferred(_owner, address(0));\\n        _owner = address(0);\\n    }\\n\\n    /**\\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\\n     * Can only be called by the current owner.\\n     */\\n    function transferOwnership(address newOwner) public virtual onlyOwner {\\n        require(newOwner != address(0), \\\"Ownable: new owner is the zero address\\\");\\n        emit OwnershipTransferred(_owner, newOwner);\\n        _owner = newOwner;\\n    }\\n}\\n\",\"keccak256\":\"0x15e2d5bd4c28a88548074c54d220e8086f638a71ed07e6b3ba5a70066fcf458d\",\"license\":\"MIT\"},\"@openzeppelin/contracts/math/Math.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity >=0.6.0 <0.8.0;\\n\\n/**\\n * @dev Standard math utilities missing in the Solidity language.\\n */\\nlibrary Math {\\n    /**\\n     * @dev Returns the largest of two numbers.\\n     */\\n    function max(uint256 a, uint256 b) internal pure returns (uint256) {\\n        return a >= b ? a : b;\\n    }\\n\\n    /**\\n     * @dev Returns the smallest of two numbers.\\n     */\\n    function min(uint256 a, uint256 b) internal pure returns (uint256) {\\n        return a < b ? a : b;\\n    }\\n\\n    /**\\n     * @dev Returns the average of two numbers. The result is rounded towards\\n     * zero.\\n     */\\n    function average(uint256 a, uint256 b) internal pure returns (uint256) {\\n        // (a + b) / 2 can overflow, so we distribute\\n        return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);\\n    }\\n}\\n\",\"keccak256\":\"0x363bd3b45201f07c9b71c2edc96533468cf14a3d029fabd82fddceb1eb3ebd9c\",\"license\":\"MIT\"},\"@openzeppelin/contracts/utils/Context.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity >=0.6.0 <0.8.0;\\n\\n/*\\n * @dev Provides information about the current execution context, including the\\n * sender of the transaction and its data. While these are generally available\\n * via msg.sender and msg.data, they should not be accessed in such a direct\\n * manner, since when dealing with GSN meta-transactions the account sending and\\n * paying for execution may not be the actual sender (as far as an application\\n * is concerned).\\n *\\n * This contract is only required for intermediate, library-like contracts.\\n */\\nabstract contract Context {\\n    function _msgSender() internal view virtual returns (address payable) {\\n        return msg.sender;\\n    }\\n\\n    function _msgData() internal view virtual returns (bytes memory) {\\n        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\\n        return msg.data;\\n    }\\n}\\n\",\"keccak256\":\"0x8d3cb350f04ff49cfb10aef08d87f19dcbaecc8027b0bed12f3275cd12f38cf0\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/OVM/chain/OVM_CanonicalTransactionChain.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n// @unsupported: ovm\\npragma solidity >0.5.0 <0.8.0;\\npragma experimental ABIEncoderV2;\\n\\n/* Library Imports */\\nimport { Lib_OVMCodec } from \\\"../../libraries/codec/Lib_OVMCodec.sol\\\";\\nimport { Lib_AddressResolver } from \\\"../../libraries/resolver/Lib_AddressResolver.sol\\\";\\nimport { Lib_MerkleTree } from \\\"../../libraries/utils/Lib_MerkleTree.sol\\\";\\n\\n/* Interface Imports */\\nimport { iOVM_CanonicalTransactionChain } from \\\"../../iOVM/chain/iOVM_CanonicalTransactionChain.sol\\\";\\nimport { iOVM_ChainStorageContainer } from \\\"../../iOVM/chain/iOVM_ChainStorageContainer.sol\\\";\\n\\n/* Contract Imports */\\nimport { OVM_ExecutionManager } from \\\"../execution/OVM_ExecutionManager.sol\\\";\\n\\n/* External Imports */\\nimport { Math } from \\\"@openzeppelin/contracts/math/Math.sol\\\";\\n\\n/**\\n * @title OVM_CanonicalTransactionChain\\n * @dev The Canonical Transaction Chain (CTC) contract is an append-only log of transactions\\n * which must be applied to the rollup state. It defines the ordering of rollup transactions by\\n * writing them to the 'CTC:batches' instance of the Chain Storage Container.\\n * The CTC also allows any account to 'enqueue' an L2 transaction, which will require that the Sequencer\\n * will eventually append it to the rollup state.\\n * If the Sequencer does not include an enqueued transaction within the 'force inclusion period',\\n * then any account may force it to be included by calling appendQueueBatch().\\n *\\n * Compiler used: solc\\n * Runtime target: EVM\\n */\\ncontract OVM_CanonicalTransactionChain is iOVM_CanonicalTransactionChain, Lib_AddressResolver {\\n\\n    /*************\\n     * Constants *\\n     *************/\\n\\n    // L2 tx gas-related\\n    uint256 constant public MIN_ROLLUP_TX_GAS = 100000;\\n    uint256 constant public MAX_ROLLUP_TX_SIZE = 50000;\\n    uint256 constant public L2_GAS_DISCOUNT_DIVISOR = 32;\\n\\n    // Encoding-related (all in bytes)\\n    uint256 constant internal BATCH_CONTEXT_SIZE = 16;\\n    uint256 constant internal BATCH_CONTEXT_LENGTH_POS = 12;\\n    uint256 constant internal BATCH_CONTEXT_START_POS = 15;\\n    uint256 constant internal TX_DATA_HEADER_SIZE = 3;\\n    uint256 constant internal BYTES_TILL_TX_DATA = 65;\\n\\n\\n    /*************\\n     * Variables *\\n     *************/\\n\\n    uint256 public forceInclusionPeriodSeconds;\\n    uint256 public forceInclusionPeriodBlocks;\\n    uint256 public maxTransactionGasLimit;\\n\\n\\n    /***************\\n     * Constructor *\\n     ***************/\\n\\n    constructor(\\n        address _libAddressManager,\\n        uint256 _forceInclusionPeriodSeconds,\\n        uint256 _forceInclusionPeriodBlocks,\\n        uint256 _maxTransactionGasLimit\\n    )\\n        Lib_AddressResolver(_libAddressManager)\\n    {\\n        forceInclusionPeriodSeconds = _forceInclusionPeriodSeconds;\\n        forceInclusionPeriodBlocks = _forceInclusionPeriodBlocks;\\n        maxTransactionGasLimit = _maxTransactionGasLimit;\\n    }\\n\\n\\n    /********************\\n     * Public Functions *\\n     ********************/\\n\\n    /**\\n     * Accesses the batch storage container.\\n     * @return Reference to the batch storage container.\\n     */\\n    function batches()\\n        override\\n        public\\n        view\\n        returns (\\n            iOVM_ChainStorageContainer\\n        )\\n    {\\n        return iOVM_ChainStorageContainer(\\n            resolve(\\\"OVM_ChainStorageContainer:CTC:batches\\\")\\n        );\\n    }\\n\\n    /**\\n     * Accesses the queue storage container.\\n     * @return Reference to the queue storage container.\\n     */\\n    function queue()\\n        override\\n        public\\n        view\\n        returns (\\n            iOVM_ChainStorageContainer\\n        )\\n    {\\n        return iOVM_ChainStorageContainer(\\n            resolve(\\\"OVM_ChainStorageContainer:CTC:queue\\\")\\n        );\\n    }\\n\\n    /**\\n     * Retrieves the total number of elements submitted.\\n     * @return _totalElements Total submitted elements.\\n     */\\n    function getTotalElements()\\n        override\\n        public\\n        view\\n        returns (\\n            uint256 _totalElements\\n        )\\n    {\\n        (uint40 totalElements,,,) = _getBatchExtraData();\\n        return uint256(totalElements);\\n    }\\n\\n    /**\\n     * Retrieves the total number of batches submitted.\\n     * @return _totalBatches Total submitted batches.\\n     */\\n    function getTotalBatches()\\n        override\\n        public\\n        view\\n        returns (\\n            uint256 _totalBatches\\n        )\\n    {\\n        return batches().length();\\n    }\\n\\n    /**\\n     * Returns the index of the next element to be enqueued.\\n     * @return Index for the next queue element.\\n     */\\n    function getNextQueueIndex()\\n        override\\n        public\\n        view\\n        returns (\\n            uint40\\n        )\\n    {\\n        (,uint40 nextQueueIndex,,) = _getBatchExtraData();\\n        return nextQueueIndex;\\n    }\\n\\n    /**\\n     * Returns the timestamp of the last transaction.\\n     * @return Timestamp for the last transaction.\\n     */\\n    function getLastTimestamp()\\n        override\\n        public\\n        view\\n        returns (\\n            uint40\\n        )\\n    {\\n        (,,uint40 lastTimestamp,) = _getBatchExtraData();\\n        return lastTimestamp;\\n    }\\n\\n    /**\\n     * Returns the blocknumber of the last transaction.\\n     * @return Blocknumber for the last transaction.\\n     */\\n    function getLastBlockNumber()\\n        override\\n        public\\n        view\\n        returns (\\n            uint40\\n        )\\n    {\\n        (,,,uint40 lastBlockNumber) = _getBatchExtraData();\\n        return lastBlockNumber;\\n    }\\n\\n    /**\\n     * Gets the queue element at a particular index.\\n     * @param _index Index of the queue element to access.\\n     * @return _element Queue element at the given index.\\n     */\\n    function getQueueElement(\\n        uint256 _index\\n    )\\n        override\\n        public\\n        view\\n        returns (\\n            Lib_OVMCodec.QueueElement memory _element\\n        )\\n    {\\n        return _getQueueElement(\\n            _index,\\n            queue()\\n        );\\n    }\\n\\n    /**\\n     * Get the number of queue elements which have not yet been included.\\n     * @return Number of pending queue elements.\\n     */\\n    function getNumPendingQueueElements()\\n        override\\n        public\\n        view\\n        returns (\\n            uint40\\n        )\\n    {\\n        return getQueueLength() - getNextQueueIndex();\\n    }\\n\\n   /**\\n     * Retrieves the length of the queue, including\\n     * both pending and canonical transactions.\\n     * @return Length of the queue.\\n     */\\n    function getQueueLength()\\n        override\\n        public\\n        view\\n        returns (\\n            uint40\\n        )\\n    {\\n        return _getQueueLength(\\n            queue()\\n        );\\n    }\\n\\n    /**\\n     * Adds a transaction to the queue.\\n     * @param _target Target L2 contract to send the transaction to.\\n     * @param _gasLimit Gas limit for the enqueued L2 transaction.\\n     * @param _data Transaction data.\\n     */\\n    function enqueue(\\n        address _target,\\n        uint256 _gasLimit,\\n        bytes memory _data\\n    )\\n        override\\n        public\\n    {\\n        require(\\n            _data.length <= MAX_ROLLUP_TX_SIZE,\\n            \\\"Transaction data size exceeds maximum for rollup transaction.\\\"\\n        );\\n\\n        require(\\n            _gasLimit <= maxTransactionGasLimit,\\n            \\\"Transaction gas limit exceeds maximum for rollup transaction.\\\"\\n        );\\n\\n        require(\\n            _gasLimit >= MIN_ROLLUP_TX_GAS,\\n            \\\"Transaction gas limit too low to enqueue.\\\"\\n        );\\n\\n        // We need to consume some amount of L1 gas in order to rate limit transactions going into\\n        // L2. However, L2 is cheaper than L1 so we only need to burn some small proportion of the\\n        // provided L1 gas.\\n        uint256 gasToConsume = _gasLimit/L2_GAS_DISCOUNT_DIVISOR;\\n        uint256 startingGas = gasleft();\\n\\n        // Although this check is not necessary (burn below will run out of gas if not true), it\\n        // gives the user an explicit reason as to why the enqueue attempt failed.\\n        require(\\n            startingGas > gasToConsume,\\n            \\\"Insufficient gas for L2 rate limiting burn.\\\"\\n        );\\n\\n        // Here we do some \\\"dumb\\\" work in order to burn gas, although we should probably replace\\n        // this with something like minting gas token later on.\\n        uint256 i;\\n        while(startingGas - gasleft() < gasToConsume) {\\n            i++;\\n        }\\n\\n        bytes32 transactionHash = keccak256(\\n            abi.encode(\\n                msg.sender,\\n                _target,\\n                _gasLimit,\\n                _data\\n            )\\n        );\\n\\n        bytes32 timestampAndBlockNumber;\\n        assembly {\\n            timestampAndBlockNumber := timestamp()\\n            timestampAndBlockNumber := or(timestampAndBlockNumber, shl(40, number()))\\n        }\\n\\n        iOVM_ChainStorageContainer queueRef = queue();\\n\\n        queueRef.push(transactionHash);\\n        queueRef.push(timestampAndBlockNumber);\\n\\n        // The underlying queue data structure stores 2 elements\\n        // per insertion, so to get the real queue length we need\\n        // to divide by 2 and subtract 1.\\n        uint256 queueIndex = queueRef.length() / 2 - 1;\\n        emit TransactionEnqueued(\\n            msg.sender,\\n            _target,\\n            _gasLimit,\\n            _data,\\n            queueIndex,\\n            block.timestamp\\n        );\\n    }\\n\\n    /**\\n     * Appends a given number of queued transactions as a single batch.\\n     * param _numQueuedTransactions Number of transactions to append.\\n     */\\n    function appendQueueBatch(\\n        uint256 // _numQueuedTransactions\\n    )\\n        override\\n        public\\n        pure\\n    {\\n        // TEMPORARY: Disable `appendQueueBatch` for minnet\\n        revert(\\\"appendQueueBatch is currently disabled.\\\");\\n\\n        // _numQueuedTransactions = Math.min(_numQueuedTransactions, getNumPendingQueueElements());\\n        // require(\\n        //     _numQueuedTransactions > 0,\\n        //     \\\"Must append more than zero transactions.\\\"\\n        // );\\n\\n        // bytes32[] memory leaves = new bytes32[](_numQueuedTransactions);\\n        // uint40 nextQueueIndex = getNextQueueIndex();\\n\\n        // for (uint256 i = 0; i < _numQueuedTransactions; i++) {\\n        //     if (msg.sender != resolve(\\\"OVM_Sequencer\\\")) {\\n        //         Lib_OVMCodec.QueueElement memory el = getQueueElement(nextQueueIndex);\\n        //         require(\\n        //             el.timestamp + forceInclusionPeriodSeconds < block.timestamp,\\n        //             \\\"Queue transactions cannot be submitted during the sequencer inclusion period.\\\"\\n        //         );\\n        //     }\\n        //     leaves[i] = _getQueueLeafHash(nextQueueIndex);\\n        //     nextQueueIndex++;\\n        // }\\n\\n        // Lib_OVMCodec.QueueElement memory lastElement = getQueueElement(nextQueueIndex - 1);\\n\\n        // _appendBatch(\\n        //     Lib_MerkleTree.getMerkleRoot(leaves),\\n        //     _numQueuedTransactions,\\n        //     _numQueuedTransactions,\\n        //     lastElement.timestamp,\\n        //     lastElement.blockNumber\\n        // );\\n\\n        // emit QueueBatchAppended(\\n        //     nextQueueIndex - _numQueuedTransactions,\\n        //     _numQueuedTransactions,\\n        //     getTotalElements()\\n        // );\\n    }\\n\\n    /**\\n     * Allows the sequencer to append a batch of transactions.\\n     * @dev This function uses a custom encoding scheme for efficiency reasons.\\n     * .param _shouldStartAtElement Specific batch we expect to start appending to.\\n     * .param _totalElementsToAppend Total number of batch elements we expect to append.\\n     * .param _contexts Array of batch contexts.\\n     * .param _transactionDataFields Array of raw transaction data.\\n     */\\n    function appendSequencerBatch()\\n        override\\n        public\\n    {\\n        uint40 shouldStartAtElement;\\n        uint24 totalElementsToAppend;\\n        uint24 numContexts;\\n        assembly {\\n            shouldStartAtElement  := shr(216, calldataload(4))\\n            totalElementsToAppend := shr(232, calldataload(9))\\n            numContexts           := shr(232, calldataload(12))\\n        }\\n\\n        require(\\n            shouldStartAtElement == getTotalElements(),\\n            \\\"Actual batch start index does not match expected start index.\\\"\\n        );\\n\\n        require(\\n            msg.sender == resolve(\\\"OVM_Sequencer\\\"),\\n            \\\"Function can only be called by the Sequencer.\\\"\\n        );\\n\\n        require(\\n            numContexts > 0,\\n            \\\"Must provide at least one batch context.\\\"\\n        );\\n\\n        require(\\n            totalElementsToAppend > 0,\\n            \\\"Must append at least one element.\\\"\\n        );\\n\\n        uint40 nextTransactionPtr = uint40(BATCH_CONTEXT_START_POS + BATCH_CONTEXT_SIZE * numContexts);\\n\\n        require(\\n            msg.data.length >= nextTransactionPtr,\\n            \\\"Not enough BatchContexts provided.\\\"\\n        );\\n\\n        // Take a reference to the queue and its length so we don't have to keep resolving it.\\n        // Length isn't going to change during the course of execution, so it's fine to simply\\n        // resolve this once at the start. Saves gas.\\n        iOVM_ChainStorageContainer queueRef = queue();\\n        uint40 queueLength = _getQueueLength(queueRef);\\n\\n        // Reserve some memory to save gas on hashing later on. This is a relatively safe estimate\\n        // for the average transaction size that will prevent having to resize this chunk of memory\\n        // later on. Saves gas.\\n        bytes memory hashMemory = new bytes((msg.data.length / totalElementsToAppend) * 2);\\n\\n        // Initialize the array of canonical chain leaves that we will append.\\n        bytes32[] memory leaves = new bytes32[](totalElementsToAppend);\\n\\n        // Each leaf index corresponds to a tx, either sequenced or enqueued.\\n        uint32 leafIndex = 0;\\n\\n        // Counter for number of sequencer transactions appended so far.\\n        uint32 numSequencerTransactions = 0;\\n\\n        // We will sequentially append leaves which are pointers to the queue.\\n        // The initial queue index is what is currently in storage.\\n        uint40 nextQueueIndex = getNextQueueIndex();\\n\\n        BatchContext memory curContext;\\n        for (uint32 i = 0; i < numContexts; i++) {\\n            BatchContext memory nextContext = _getBatchContext(i);\\n\\n            if (i == 0) {\\n                // Execute a special check for the first batch.\\n                _validateFirstBatchContext(nextContext);\\n            }\\n\\n            // Execute this check on every single batch, including the first one.\\n            _validateNextBatchContext(\\n                curContext,\\n                nextContext,\\n                nextQueueIndex,\\n                queueRef\\n            );\\n\\n            // Now we can update our current context.\\n            curContext = nextContext;\\n\\n            // Process sequencer transactions first.\\n            for (uint32 j = 0; j < curContext.numSequencedTransactions; j++) {\\n                uint256 txDataLength;\\n                assembly {\\n                    txDataLength := shr(232, calldataload(nextTransactionPtr))\\n                }\\n                require(\\n                    txDataLength <= MAX_ROLLUP_TX_SIZE,\\n                    \\\"Transaction data size exceeds maximum for rollup transaction.\\\"\\n                );\\n\\n                leaves[leafIndex] = _getSequencerLeafHash(\\n                    curContext,\\n                    nextTransactionPtr,\\n                    txDataLength,\\n                    hashMemory\\n                );\\n\\n                nextTransactionPtr += uint40(TX_DATA_HEADER_SIZE + txDataLength);\\n                numSequencerTransactions++;\\n                leafIndex++;\\n            }\\n\\n            // Now process any subsequent queue transactions.\\n            for (uint32 j = 0; j < curContext.numSubsequentQueueTransactions; j++) {\\n                require(\\n                    nextQueueIndex < queueLength,\\n                    \\\"Not enough queued transactions to append.\\\"\\n                );\\n\\n                leaves[leafIndex] = _getQueueLeafHash(nextQueueIndex);\\n                nextQueueIndex++;\\n                leafIndex++;\\n            }\\n        }\\n\\n        _validateFinalBatchContext(\\n            curContext,\\n            nextQueueIndex,\\n            queueLength,\\n            queueRef\\n        );\\n\\n        require(\\n            msg.data.length == nextTransactionPtr,\\n            \\\"Not all sequencer transactions were processed.\\\"\\n        );\\n\\n        require(\\n            leafIndex == totalElementsToAppend,\\n            \\\"Actual transaction index does not match expected total elements to append.\\\"\\n        );\\n\\n        // Generate the required metadata that we need to append this batch\\n        uint40 numQueuedTransactions = totalElementsToAppend - numSequencerTransactions;\\n        uint40 blockTimestamp;\\n        uint40 blockNumber;\\n        if (curContext.numSubsequentQueueTransactions == 0) {\\n            // The last element is a sequencer tx, therefore pull timestamp and block number from the last context.\\n            blockTimestamp = uint40(curContext.timestamp);\\n            blockNumber = uint40(curContext.blockNumber);\\n        } else {\\n            // The last element is a queue tx, therefore pull timestamp and block number from the queue element.\\n            // curContext.numSubsequentQueueTransactions > 0 which means that we've processed at least one queue element.\\n            // We increment nextQueueIndex after processing each queue element,\\n            // so the index of the last element we processed is nextQueueIndex - 1.\\n            Lib_OVMCodec.QueueElement memory lastElement = _getQueueElement(\\n                nextQueueIndex - 1,\\n                queueRef\\n            );\\n\\n            blockTimestamp = lastElement.timestamp;\\n            blockNumber = lastElement.blockNumber;\\n        }\\n\\n        // For efficiency reasons getMerkleRoot modifies the `leaves` argument in place\\n        // while calculating the root hash therefore any arguments passed to it must not\\n        // be used again afterwards\\n        _appendBatch(\\n            Lib_MerkleTree.getMerkleRoot(leaves),\\n            totalElementsToAppend,\\n            numQueuedTransactions,\\n            blockTimestamp,\\n            blockNumber\\n        );\\n\\n        emit SequencerBatchAppended(\\n            nextQueueIndex - numQueuedTransactions,\\n            numQueuedTransactions,\\n            getTotalElements()\\n        );\\n    }\\n\\n    /**\\n     * Verifies whether a transaction is included in the chain.\\n     * @param _transaction Transaction to verify.\\n     * @param _txChainElement Transaction chain element corresponding to the transaction.\\n     * @param _batchHeader Header of the batch the transaction was included in.\\n     * @param _inclusionProof Inclusion proof for the provided transaction chain element.\\n     * @return True if the transaction exists in the CTC, false if not.\\n     */\\n    function verifyTransaction(\\n        Lib_OVMCodec.Transaction memory _transaction,\\n        Lib_OVMCodec.TransactionChainElement memory _txChainElement,\\n        Lib_OVMCodec.ChainBatchHeader memory _batchHeader,\\n        Lib_OVMCodec.ChainInclusionProof memory _inclusionProof\\n    )\\n        override\\n        public\\n        view\\n        returns (\\n            bool\\n        )\\n    {\\n        if (_txChainElement.isSequenced == true) {\\n            return _verifySequencerTransaction(\\n                _transaction,\\n                _txChainElement,\\n                _batchHeader,\\n                _inclusionProof\\n            );\\n        } else {\\n            return _verifyQueueTransaction(\\n                _transaction,\\n                _txChainElement.queueIndex,\\n                _batchHeader,\\n                _inclusionProof\\n            );\\n        }\\n    }\\n\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    /**\\n     * Returns the BatchContext located at a particular index.\\n     * @param _index The index of the BatchContext\\n     * @return The BatchContext at the specified index.\\n     */\\n    function _getBatchContext(\\n        uint256 _index\\n    )\\n        internal\\n        pure\\n        returns (\\n            BatchContext memory\\n        )\\n    {\\n        uint256 contextPtr = 15 + _index * BATCH_CONTEXT_SIZE;\\n        uint256 numSequencedTransactions;\\n        uint256 numSubsequentQueueTransactions;\\n        uint256 ctxTimestamp;\\n        uint256 ctxBlockNumber;\\n\\n        assembly {\\n            numSequencedTransactions       := shr(232, calldataload(contextPtr))\\n            numSubsequentQueueTransactions := shr(232, calldataload(add(contextPtr, 3)))\\n            ctxTimestamp                   := shr(216, calldataload(add(contextPtr, 6)))\\n            ctxBlockNumber                 := shr(216, calldataload(add(contextPtr, 11)))\\n        }\\n\\n        return BatchContext({\\n            numSequencedTransactions: numSequencedTransactions,\\n            numSubsequentQueueTransactions: numSubsequentQueueTransactions,\\n            timestamp: ctxTimestamp,\\n            blockNumber: ctxBlockNumber\\n        });\\n    }\\n\\n    /**\\n     * Parses the batch context from the extra data.\\n     * @return Total number of elements submitted.\\n     * @return Index of the next queue element.\\n     */\\n    function _getBatchExtraData()\\n        internal\\n        view\\n        returns (\\n            uint40,\\n            uint40,\\n            uint40,\\n            uint40\\n        )\\n    {\\n        bytes27 extraData = batches().getGlobalMetadata();\\n\\n        uint40 totalElements;\\n        uint40 nextQueueIndex;\\n        uint40 lastTimestamp;\\n        uint40 lastBlockNumber;\\n        assembly {\\n            extraData       :=  shr(40, extraData)\\n            totalElements   :=  and(extraData, 0x000000000000000000000000000000000000000000000000000000FFFFFFFFFF)\\n            nextQueueIndex  :=  shr(40, and(extraData, 0x00000000000000000000000000000000000000000000FFFFFFFFFF0000000000))\\n            lastTimestamp   :=  shr(80, and(extraData, 0x0000000000000000000000000000000000FFFFFFFFFF00000000000000000000))\\n            lastBlockNumber :=  shr(120, and(extraData, 0x000000000000000000000000FFFFFFFFFF000000000000000000000000000000))\\n        }\\n\\n        return (\\n            totalElements,\\n            nextQueueIndex,\\n            lastTimestamp,\\n            lastBlockNumber\\n        );\\n    }\\n\\n    /**\\n     * Encodes the batch context for the extra data.\\n     * @param _totalElements Total number of elements submitted.\\n     * @param _nextQueueIndex Index of the next queue element.\\n     * @param _timestamp Timestamp for the last batch.\\n     * @param _blockNumber Block number of the last batch.\\n     * @return Encoded batch context.\\n     */\\n    function _makeBatchExtraData(\\n        uint40 _totalElements,\\n        uint40 _nextQueueIndex,\\n        uint40 _timestamp,\\n        uint40 _blockNumber\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes27\\n        )\\n    {\\n        bytes27 extraData;\\n        assembly {\\n            extraData := _totalElements\\n            extraData := or(extraData, shl(40, _nextQueueIndex))\\n            extraData := or(extraData, shl(80, _timestamp))\\n            extraData := or(extraData, shl(120, _blockNumber))\\n            extraData := shl(40, extraData)\\n        }\\n\\n        return extraData;\\n    }\\n\\n    /**\\n     * Retrieves the hash of a queue element.\\n     * @param _index Index of the queue element to retrieve a hash for.\\n     * @return Hash of the queue element.\\n     */\\n    function _getQueueLeafHash(\\n        uint256 _index\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        return _hashTransactionChainElement(\\n            Lib_OVMCodec.TransactionChainElement({\\n                isSequenced: false,\\n                queueIndex: _index,\\n                timestamp: 0,\\n                blockNumber: 0,\\n                txData: hex\\\"\\\"\\n            })\\n        );\\n    }\\n\\n    /**\\n     * Gets the queue element at a particular index.\\n     * @param _index Index of the queue element to access.\\n     * @return _element Queue element at the given index.\\n     */\\n    function _getQueueElement(\\n        uint256 _index,\\n        iOVM_ChainStorageContainer _queueRef\\n    )\\n        internal\\n        view\\n        returns (\\n            Lib_OVMCodec.QueueElement memory _element\\n        )\\n    {\\n        // The underlying queue data structure stores 2 elements\\n        // per insertion, so to get the actual desired queue index\\n        // we need to multiply by 2.\\n        uint40 trueIndex = uint40(_index * 2);\\n        bytes32 transactionHash = _queueRef.get(trueIndex);\\n        bytes32 timestampAndBlockNumber = _queueRef.get(trueIndex + 1);\\n\\n        uint40 elementTimestamp;\\n        uint40 elementBlockNumber;\\n        assembly {\\n            elementTimestamp   :=         and(timestampAndBlockNumber, 0x000000000000000000000000000000000000000000000000000000FFFFFFFFFF)\\n            elementBlockNumber := shr(40, and(timestampAndBlockNumber, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000000000))\\n        }\\n\\n        return Lib_OVMCodec.QueueElement({\\n            transactionHash: transactionHash,\\n            timestamp: elementTimestamp,\\n            blockNumber: elementBlockNumber\\n        });\\n    }\\n\\n    /**\\n     * Retrieves the length of the queue.\\n     * @return Length of the queue.\\n     */\\n    function _getQueueLength(\\n        iOVM_ChainStorageContainer _queueRef\\n    )\\n        internal\\n        view\\n        returns (\\n            uint40\\n        )\\n    {\\n        // The underlying queue data structure stores 2 elements\\n        // per insertion, so to get the real queue length we need\\n        // to divide by 2.\\n        return uint40(_queueRef.length() / 2);\\n    }\\n\\n    /**\\n     * Retrieves the hash of a sequencer element.\\n     * @param _context Batch context for the given element.\\n     * @param _nextTransactionPtr Pointer to the next transaction in the calldata.\\n     * @param _txDataLength Length of the transaction item.\\n     * @return Hash of the sequencer element.\\n     */\\n    function _getSequencerLeafHash(\\n        BatchContext memory _context,\\n        uint256 _nextTransactionPtr,\\n        uint256 _txDataLength,\\n        bytes memory _hashMemory\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        // Only allocate more memory if we didn't reserve enough to begin with.\\n        if (BYTES_TILL_TX_DATA + _txDataLength > _hashMemory.length) {\\n            _hashMemory = new bytes(BYTES_TILL_TX_DATA + _txDataLength);\\n        }\\n\\n        uint256 ctxTimestamp = _context.timestamp;\\n        uint256 ctxBlockNumber = _context.blockNumber;\\n\\n        bytes32 leafHash;\\n        assembly {\\n            let chainElementStart := add(_hashMemory, 0x20)\\n\\n            // Set the first byte equal to `1` to indicate this is a sequencer chain element.\\n            // This distinguishes sequencer ChainElements from queue ChainElements because\\n            // all queue ChainElements are ABI encoded and the first byte of ABI encoded\\n            // elements is always zero\\n            mstore8(chainElementStart, 1)\\n\\n            mstore(add(chainElementStart, 1), ctxTimestamp)\\n            mstore(add(chainElementStart, 33), ctxBlockNumber)\\n\\n            calldatacopy(add(chainElementStart, BYTES_TILL_TX_DATA), add(_nextTransactionPtr, 3), _txDataLength)\\n\\n            leafHash := keccak256(chainElementStart, add(BYTES_TILL_TX_DATA, _txDataLength))\\n        }\\n\\n        return leafHash;\\n    }\\n\\n    /**\\n     * Retrieves the hash of a sequencer element.\\n     * @param _txChainElement The chain element which is hashed to calculate the leaf.\\n     * @return Hash of the sequencer element.\\n     */\\n    function _getSequencerLeafHash(\\n        Lib_OVMCodec.TransactionChainElement memory _txChainElement\\n    )\\n        internal\\n        view\\n        returns(\\n            bytes32\\n        )\\n    {\\n        bytes memory txData = _txChainElement.txData;\\n        uint256 txDataLength = _txChainElement.txData.length;\\n\\n        bytes memory chainElement = new bytes(BYTES_TILL_TX_DATA + txDataLength);\\n        uint256 ctxTimestamp = _txChainElement.timestamp;\\n        uint256 ctxBlockNumber = _txChainElement.blockNumber;\\n\\n        bytes32 leafHash;\\n        assembly {\\n            let chainElementStart := add(chainElement, 0x20)\\n\\n            // Set the first byte equal to `1` to indicate this is a sequencer chain element.\\n            // This distinguishes sequencer ChainElements from queue ChainElements because\\n            // all queue ChainElements are ABI encoded and the first byte of ABI encoded\\n            // elements is always zero\\n            mstore8(chainElementStart, 1)\\n\\n            mstore(add(chainElementStart, 1), ctxTimestamp)\\n            mstore(add(chainElementStart, 33), ctxBlockNumber)\\n\\n            pop(staticcall(gas(), 0x04, add(txData, 0x20), txDataLength, add(chainElementStart, BYTES_TILL_TX_DATA), txDataLength))\\n\\n            leafHash := keccak256(chainElementStart, add(BYTES_TILL_TX_DATA, txDataLength))\\n        }\\n\\n        return leafHash;\\n    }\\n\\n    /**\\n     * Inserts a batch into the chain of batches.\\n     * @param _transactionRoot Root of the transaction tree for this batch.\\n     * @param _batchSize Number of elements in the batch.\\n     * @param _numQueuedTransactions Number of queue transactions in the batch.\\n     * @param _timestamp The latest batch timestamp.\\n     * @param _blockNumber The latest batch blockNumber.\\n     */\\n    function _appendBatch(\\n        bytes32 _transactionRoot,\\n        uint256 _batchSize,\\n        uint256 _numQueuedTransactions,\\n        uint40 _timestamp,\\n        uint40 _blockNumber\\n    )\\n        internal\\n    {\\n        iOVM_ChainStorageContainer batchesRef = batches();\\n        (uint40 totalElements, uint40 nextQueueIndex,,) = _getBatchExtraData();\\n\\n        Lib_OVMCodec.ChainBatchHeader memory header = Lib_OVMCodec.ChainBatchHeader({\\n            batchIndex: batchesRef.length(),\\n            batchRoot: _transactionRoot,\\n            batchSize: _batchSize,\\n            prevTotalElements: totalElements,\\n            extraData: hex\\\"\\\"\\n        });\\n\\n        emit TransactionBatchAppended(\\n            header.batchIndex,\\n            header.batchRoot,\\n            header.batchSize,\\n            header.prevTotalElements,\\n            header.extraData\\n        );\\n\\n        bytes32 batchHeaderHash = Lib_OVMCodec.hashBatchHeader(header);\\n        bytes27 latestBatchContext = _makeBatchExtraData(\\n            totalElements + uint40(header.batchSize),\\n            nextQueueIndex + uint40(_numQueuedTransactions),\\n            _timestamp,\\n            _blockNumber\\n        );\\n\\n        batchesRef.push(batchHeaderHash, latestBatchContext);\\n    }\\n\\n    /**\\n     * Checks that the first batch context in a sequencer submission is valid\\n     * @param _firstContext The batch context to validate.\\n     */\\n    function _validateFirstBatchContext(\\n        BatchContext memory _firstContext\\n    )\\n        internal\\n        view\\n    {\\n        // If there are existing elements, this batch must have the same context\\n        // or a later timestamp and block number.\\n        if (getTotalElements() > 0) {\\n            (,, uint40 lastTimestamp, uint40 lastBlockNumber) = _getBatchExtraData();\\n\\n            require(\\n                _firstContext.blockNumber >= lastBlockNumber,\\n                \\\"Context block number is lower than last submitted.\\\"\\n            );\\n\\n            require(\\n                _firstContext.timestamp >= lastTimestamp,\\n                \\\"Context timestamp is lower than last submitted.\\\"\\n            );\\n        }\\n\\n        // Sequencer cannot submit contexts which are more than the force inclusion period old.\\n        require(\\n            _firstContext.timestamp + forceInclusionPeriodSeconds >= block.timestamp,\\n            \\\"Context timestamp too far in the past.\\\"\\n        );\\n\\n        require(\\n            _firstContext.blockNumber + forceInclusionPeriodBlocks >= block.number,\\n            \\\"Context block number too far in the past.\\\"\\n        );\\n    }\\n\\n    /**\\n     * Checks that a given batch context has a time context which is below a given que element\\n     * @param _context The batch context to validate has values lower.\\n     * @param _queueIndex Index of the queue element we are validating came later than the context.\\n     * @param _queueRef The storage container for the queue.\\n     */\\n    function _validateContextBeforeEnqueue(\\n        BatchContext memory _context,\\n        uint40 _queueIndex,\\n        iOVM_ChainStorageContainer _queueRef\\n    )\\n        internal\\n        view\\n    {\\n            Lib_OVMCodec.QueueElement memory nextQueueElement = _getQueueElement(\\n                _queueIndex,\\n                _queueRef\\n            );\\n\\n            // If the force inclusion period has passed for an enqueued transaction, it MUST be the next chain element.\\n            require(\\n                block.timestamp < nextQueueElement.timestamp + forceInclusionPeriodSeconds,\\n                \\\"Previously enqueued batches have expired and must be appended before a new sequencer batch.\\\"\\n            );\\n\\n            // Just like sequencer transaction times must be increasing relative to each other,\\n            // We also require that they be increasing relative to any interspersed queue elements.\\n            require(\\n                _context.timestamp <= nextQueueElement.timestamp,\\n                \\\"Sequencer transaction timestamp exceeds that of next queue element.\\\"\\n            );\\n\\n            require(\\n                _context.blockNumber <= nextQueueElement.blockNumber,\\n                \\\"Sequencer transaction blockNumber exceeds that of next queue element.\\\"\\n            );\\n    }\\n\\n    /**\\n     * Checks that a given batch context is valid based on its previous context, and the next queue elemtent.\\n     * @param _prevContext The previously validated batch context.\\n     * @param _nextContext The batch context to validate with this call.\\n     * @param _nextQueueIndex Index of the next queue element to process for the _nextContext's subsequentQueueElements.\\n     * @param _queueRef The storage container for the queue.\\n     */\\n    function _validateNextBatchContext(\\n        BatchContext memory _prevContext,\\n        BatchContext memory _nextContext,\\n        uint40 _nextQueueIndex,\\n        iOVM_ChainStorageContainer _queueRef\\n    )\\n        internal\\n        view\\n    {\\n        // All sequencer transactions' times must be greater than or equal to the previous ones.\\n        require(\\n            _nextContext.timestamp >= _prevContext.timestamp,\\n            \\\"Context timestamp values must monotonically increase.\\\"\\n        );\\n\\n        require(\\n            _nextContext.blockNumber >= _prevContext.blockNumber,\\n            \\\"Context blockNumber values must monotonically increase.\\\"\\n        );\\n\\n        // If there is going to be a queue element pulled in from this context:\\n        if (_nextContext.numSubsequentQueueTransactions > 0) {\\n            _validateContextBeforeEnqueue(\\n                _nextContext,\\n                _nextQueueIndex,\\n                _queueRef\\n            );\\n        }\\n    }\\n\\n    /**\\n     * Checks that the final batch context in a sequencer submission is valid.\\n     * @param _finalContext The batch context to validate.\\n     * @param _queueLength The length of the queue at the start of the batchAppend call.\\n     * @param _nextQueueIndex The next element in the queue that will be pulled into the CTC.\\n     * @param _queueRef The storage container for the queue.\\n     */\\n    function _validateFinalBatchContext(\\n        BatchContext memory _finalContext,\\n        uint40 _nextQueueIndex,\\n        uint40 _queueLength,\\n        iOVM_ChainStorageContainer _queueRef\\n    )\\n        internal\\n        view\\n    {\\n        // If the queue is not now empty, check the mononoticity of whatever the next batch that will come in is.\\n        if (_queueLength - _nextQueueIndex > 0 && _finalContext.numSubsequentQueueTransactions == 0) {\\n            _validateContextBeforeEnqueue(\\n                _finalContext,\\n                _nextQueueIndex,\\n                _queueRef\\n            );\\n        }\\n        // Batches cannot be added from the future, or subsequent enqueue() contexts would violate monotonicity.\\n        require(_finalContext.timestamp <= block.timestamp, \\\"Context timestamp is from the future.\\\");\\n        require(_finalContext.blockNumber <= block.number, \\\"Context block number is from the future.\\\");\\n    }\\n\\n    /**\\n     * Hashes a transaction chain element.\\n     * @param _element Chain element to hash.\\n     * @return Hash of the chain element.\\n     */\\n    function _hashTransactionChainElement(\\n        Lib_OVMCodec.TransactionChainElement memory _element\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        return keccak256(\\n            abi.encode(\\n                _element.isSequenced,\\n                _element.queueIndex,\\n                _element.timestamp,\\n                _element.blockNumber,\\n                _element.txData\\n            )\\n        );\\n    }\\n\\n    /**\\n     * Verifies a sequencer transaction, returning true if it was indeed included in the CTC\\n     * @param _transaction The transaction we are verifying inclusion of.\\n     * @param _txChainElement The chain element that the transaction is claimed to be a part of.\\n     * @param _batchHeader Header of the batch the transaction was included in.\\n     * @param _inclusionProof An inclusion proof into the CTC at a particular index.\\n     * @return True if the transaction was included in the specified location, else false.\\n     */\\n    function _verifySequencerTransaction(\\n        Lib_OVMCodec.Transaction memory _transaction,\\n        Lib_OVMCodec.TransactionChainElement memory _txChainElement,\\n        Lib_OVMCodec.ChainBatchHeader memory _batchHeader,\\n        Lib_OVMCodec.ChainInclusionProof memory _inclusionProof\\n    )\\n        internal\\n        view\\n        returns (\\n            bool\\n        )\\n    {\\n        OVM_ExecutionManager ovmExecutionManager = OVM_ExecutionManager(resolve(\\\"OVM_ExecutionManager\\\"));\\n        uint256 gasLimit = ovmExecutionManager.getMaxTransactionGasLimit();\\n        bytes32 leafHash = _getSequencerLeafHash(_txChainElement);\\n\\n        require(\\n            _verifyElement(\\n                leafHash,\\n                _batchHeader,\\n                _inclusionProof\\n            ),\\n            \\\"Invalid Sequencer transaction inclusion proof.\\\"\\n        );\\n\\n        require(\\n            _transaction.blockNumber        == _txChainElement.blockNumber\\n            && _transaction.timestamp       == _txChainElement.timestamp\\n            && _transaction.entrypoint      == resolve(\\\"OVM_DecompressionPrecompileAddress\\\")\\n            && _transaction.gasLimit        == gasLimit\\n            && _transaction.l1TxOrigin      == address(0)\\n            && _transaction.l1QueueOrigin   == Lib_OVMCodec.QueueOrigin.SEQUENCER_QUEUE\\n            && keccak256(_transaction.data) == keccak256(_txChainElement.txData),\\n            \\\"Invalid Sequencer transaction.\\\"\\n        );\\n\\n        return true;\\n    }\\n\\n    /**\\n     * Verifies a queue transaction, returning true if it was indeed included in the CTC\\n     * @param _transaction The transaction we are verifying inclusion of.\\n     * @param _queueIndex The queueIndex of the queued transaction.\\n     * @param _batchHeader Header of the batch the transaction was included in.\\n     * @param _inclusionProof An inclusion proof into the CTC at a particular index (should point to queue tx).\\n     * @return True if the transaction was included in the specified location, else false.\\n     */\\n    function _verifyQueueTransaction(\\n        Lib_OVMCodec.Transaction memory _transaction,\\n        uint256 _queueIndex,\\n        Lib_OVMCodec.ChainBatchHeader memory _batchHeader,\\n        Lib_OVMCodec.ChainInclusionProof memory _inclusionProof\\n    )\\n        internal\\n        view\\n        returns (\\n            bool\\n        )\\n    {\\n        bytes32 leafHash = _getQueueLeafHash(_queueIndex);\\n\\n        require(\\n            _verifyElement(\\n                leafHash,\\n                _batchHeader,\\n                _inclusionProof\\n            ),\\n            \\\"Invalid Queue transaction inclusion proof.\\\"\\n        );\\n\\n        bytes32 transactionHash = keccak256(\\n            abi.encode(\\n                _transaction.l1TxOrigin,\\n                _transaction.entrypoint,\\n                _transaction.gasLimit,\\n                _transaction.data\\n            )\\n        );\\n\\n        Lib_OVMCodec.QueueElement memory el = getQueueElement(_queueIndex);\\n        require(\\n            el.transactionHash      == transactionHash\\n            && el.timestamp   == _transaction.timestamp\\n            && el.blockNumber == _transaction.blockNumber,\\n            \\\"Invalid Queue transaction.\\\"\\n        );\\n\\n        return true;\\n    }\\n\\n    /**\\n     * Verifies a batch inclusion proof.\\n     * @param _element Hash of the element to verify a proof for.\\n     * @param _batchHeader Header of the batch in which the element was included.\\n     * @param _proof Merkle inclusion proof for the element.\\n     */\\n    function _verifyElement(\\n        bytes32 _element,\\n        Lib_OVMCodec.ChainBatchHeader memory _batchHeader,\\n        Lib_OVMCodec.ChainInclusionProof memory _proof\\n    )\\n        internal\\n        view\\n        returns (\\n            bool\\n        )\\n    {\\n        require(\\n            Lib_OVMCodec.hashBatchHeader(_batchHeader) == batches().get(uint32(_batchHeader.batchIndex)),\\n            \\\"Invalid batch header.\\\"\\n        );\\n\\n        require(\\n            Lib_MerkleTree.verify(\\n                _batchHeader.batchRoot,\\n                _element,\\n                _proof.index,\\n                _proof.siblings,\\n                _batchHeader.batchSize\\n            ),\\n            \\\"Invalid inclusion proof.\\\"\\n        );\\n\\n        return true;\\n    }\\n}\\n\",\"keccak256\":\"0xdc5f311b6840476027f597b9b6ff6c7673988cfed9c9ace625c705175b27abe3\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/OVM/execution/OVM_ExecutionManager.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n// @unsupported: ovm\\npragma solidity >0.5.0 <0.8.0;\\npragma experimental ABIEncoderV2;\\n\\n/* Library Imports */\\nimport { Lib_OVMCodec } from \\\"../../libraries/codec/Lib_OVMCodec.sol\\\";\\nimport { Lib_AddressResolver } from \\\"../../libraries/resolver/Lib_AddressResolver.sol\\\";\\nimport { Lib_EthUtils } from \\\"../../libraries/utils/Lib_EthUtils.sol\\\";\\nimport { Lib_ErrorUtils } from \\\"../../libraries/utils/Lib_ErrorUtils.sol\\\";\\n\\n/* Interface Imports */\\nimport { iOVM_ExecutionManager } from \\\"../../iOVM/execution/iOVM_ExecutionManager.sol\\\";\\nimport { iOVM_StateManager } from \\\"../../iOVM/execution/iOVM_StateManager.sol\\\";\\nimport { iOVM_SafetyChecker } from \\\"../../iOVM/execution/iOVM_SafetyChecker.sol\\\";\\n\\n/* Contract Imports */\\nimport { OVM_DeployerWhitelist } from \\\"../predeploys/OVM_DeployerWhitelist.sol\\\";\\n\\n/**\\n * @title OVM_ExecutionManager\\n * @dev The Execution Manager (EM) is the core of our OVM implementation, and provides a sandboxed\\n * environment allowing us to execute OVM transactions deterministically on either Layer 1 or\\n * Layer 2.\\n * The EM's run() function is the first function called during the execution of any\\n * transaction on L2.\\n * For each context-dependent EVM operation the EM has a function which implements a corresponding\\n * OVM operation, which will read state from the State Manager contract.\\n * The EM relies on the Safety Checker to verify that code deployed to Layer 2 does not contain any\\n * context-dependent operations.\\n *\\n * Compiler used: solc\\n * Runtime target: EVM\\n */\\ncontract OVM_ExecutionManager is iOVM_ExecutionManager, Lib_AddressResolver {\\n\\n    /********************************\\n     * External Contract References *\\n     ********************************/\\n\\n    iOVM_SafetyChecker internal ovmSafetyChecker;\\n    iOVM_StateManager internal ovmStateManager;\\n\\n\\n    /*******************************\\n     * Execution Context Variables *\\n     *******************************/\\n\\n    GasMeterConfig internal gasMeterConfig;\\n    GlobalContext internal globalContext;\\n    TransactionContext internal transactionContext;\\n    MessageContext internal messageContext;\\n    TransactionRecord internal transactionRecord;\\n    MessageRecord internal messageRecord;\\n\\n\\n    /**************************\\n     * Gas Metering Constants *\\n     **************************/\\n\\n    address constant GAS_METADATA_ADDRESS = 0x06a506A506a506A506a506a506A506A506A506A5;\\n    uint256 constant NUISANCE_GAS_SLOAD = 20000;\\n    uint256 constant NUISANCE_GAS_SSTORE = 20000;\\n    uint256 constant MIN_NUISANCE_GAS_PER_CONTRACT = 30000;\\n    uint256 constant NUISANCE_GAS_PER_CONTRACT_BYTE = 100;\\n    uint256 constant MIN_GAS_FOR_INVALID_STATE_ACCESS = 30000;\\n\\n    /**************************\\n     * Default Context Values *\\n     **************************/\\n\\n    uint256 constant DEFAULT_UINT256 = 0xdefa017defa017defa017defa017defa017defa017defa017defa017defa017d;\\n    address constant DEFAULT_ADDRESS = 0xdEfa017defA017DeFA017DEfa017DeFA017DeFa0;\\n\\n    /***************\\n     * Constructor *\\n     ***************/\\n\\n    /**\\n     * @param _libAddressManager Address of the Address Manager.\\n     */\\n    constructor(\\n        address _libAddressManager,\\n        GasMeterConfig memory _gasMeterConfig,\\n        GlobalContext memory _globalContext\\n    )\\n        Lib_AddressResolver(_libAddressManager)\\n    {\\n        ovmSafetyChecker = iOVM_SafetyChecker(resolve(\\\"OVM_SafetyChecker\\\"));\\n        gasMeterConfig = _gasMeterConfig;\\n        globalContext = _globalContext;\\n        _resetContext();\\n    }\\n\\n\\n    /**********************\\n     * Function Modifiers *\\n     **********************/\\n\\n    /**\\n     * Applies dynamically-sized refund to a transaction to account for the difference in execution\\n     * between L1 and L2, so that the overall cost of the ovmOPCODE is fixed.\\n     * @param _cost Desired gas cost for the function after the refund.\\n     */\\n    modifier netGasCost(\\n        uint256 _cost\\n    ) {\\n        uint256 gasProvided = gasleft();\\n        _;\\n        uint256 gasUsed = gasProvided - gasleft();\\n\\n        // We want to refund everything *except* the specified cost.\\n        if (_cost < gasUsed) {\\n            transactionRecord.ovmGasRefund += gasUsed - _cost;\\n        }\\n    }\\n\\n    /**\\n     * Applies a fixed-size gas refund to a transaction to account for the difference in execution\\n     * between L1 and L2, so that the overall cost of an ovmOPCODE can be lowered.\\n     * @param _discount Amount of gas cost to refund for the ovmOPCODE.\\n     */\\n    modifier fixedGasDiscount(\\n        uint256 _discount\\n    ) {\\n        uint256 gasProvided = gasleft();\\n        _;\\n        uint256 gasUsed = gasProvided - gasleft();\\n\\n        // We want to refund the specified _discount, unless this risks underflow.\\n        if (_discount < gasUsed) {\\n            transactionRecord.ovmGasRefund += _discount;\\n        } else {\\n            // refund all we can without risking underflow.\\n            transactionRecord.ovmGasRefund += gasUsed;\\n        }\\n    }\\n\\n    /**\\n     * Makes sure we're not inside a static context.\\n     */\\n    modifier notStatic() {\\n        if (messageContext.isStatic == true) {\\n            _revertWithFlag(RevertFlag.STATIC_VIOLATION);\\n        }\\n        _;\\n    }\\n\\n\\n    /************************************\\n     * Transaction Execution Entrypoint *\\n     ************************************/\\n\\n    /**\\n     * Starts the execution of a transaction via the OVM_ExecutionManager.\\n     * @param _transaction Transaction data to be executed.\\n     * @param _ovmStateManager iOVM_StateManager implementation providing account state.\\n     */\\n    function run(\\n        Lib_OVMCodec.Transaction memory _transaction,\\n        address _ovmStateManager\\n    )\\n        override\\n        external\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        // Make sure that run() is not re-enterable.  This condition should always be satisfied\\n        // Once run has been called once, due to the behavior of _isValidInput().\\n        if (transactionContext.ovmNUMBER != DEFAULT_UINT256) {\\n            return bytes(\\\"\\\");\\n        }\\n\\n        // Store our OVM_StateManager instance (significantly easier than attempting to pass the\\n        // address around in calldata).\\n        ovmStateManager = iOVM_StateManager(_ovmStateManager);\\n\\n        // Make sure this function can't be called by anyone except the owner of the\\n        // OVM_StateManager (expected to be an OVM_StateTransitioner). We can revert here because\\n        // this would make the `run` itself invalid.\\n        require(\\n            // This method may return false during fraud proofs, but always returns true in L2 nodes' State Manager precompile.\\n            ovmStateManager.isAuthenticated(msg.sender),\\n            \\\"Only authenticated addresses in ovmStateManager can call this function\\\"\\n        );\\n\\n        // Initialize the execution context, must be initialized before we perform any gas metering\\n        // or we'll throw a nuisance gas error.\\n        _initContext(_transaction);\\n\\n        // TEMPORARY: Gas metering is disabled for minnet.\\n        // // Check whether we need to start a new epoch, do so if necessary.\\n        // _checkNeedsNewEpoch(_transaction.timestamp);\\n\\n        // Make sure the transaction's gas limit is valid. We don't revert here because we reserve\\n        // reverts for INVALID_STATE_ACCESS.\\n        if (_isValidInput(_transaction) == false) {\\n            _resetContext();\\n            return bytes(\\\"\\\");\\n        }\\n\\n        // TEMPORARY: Gas metering is disabled for minnet.\\n        // // Check gas right before the call to get total gas consumed by OVM transaction.\\n        // uint256 gasProvided = gasleft();\\n\\n        // Run the transaction, make sure to meter the gas usage.\\n        (, bytes memory returndata) = ovmCALL(\\n            _transaction.gasLimit - gasMeterConfig.minTransactionGasLimit,\\n            _transaction.entrypoint,\\n            _transaction.data\\n        );\\n\\n        // TEMPORARY: Gas metering is disabled for minnet.\\n        // // Update the cumulative gas based on the amount of gas used.\\n        // uint256 gasUsed = gasProvided - gasleft();\\n        // _updateCumulativeGas(gasUsed, _transaction.l1QueueOrigin);\\n\\n        // Wipe the execution context.\\n        _resetContext();\\n\\n        return returndata;\\n    }\\n\\n\\n    /******************************\\n     * Opcodes: Execution Context *\\n     ******************************/\\n\\n    /**\\n     * @notice Overrides CALLER.\\n     * @return _CALLER Address of the CALLER within the current message context.\\n     */\\n    function ovmCALLER()\\n        override\\n        external\\n        view\\n        returns (\\n            address _CALLER\\n        )\\n    {\\n        return messageContext.ovmCALLER;\\n    }\\n\\n    /**\\n     * @notice Overrides ADDRESS.\\n     * @return _ADDRESS Active ADDRESS within the current message context.\\n     */\\n    function ovmADDRESS()\\n        override\\n        public\\n        view\\n        returns (\\n            address _ADDRESS\\n        )\\n    {\\n        return messageContext.ovmADDRESS;\\n    }\\n\\n    /**\\n     * @notice Overrides TIMESTAMP.\\n     * @return _TIMESTAMP Value of the TIMESTAMP within the transaction context.\\n     */\\n    function ovmTIMESTAMP()\\n        override\\n        external\\n        view\\n        returns (\\n            uint256 _TIMESTAMP\\n        )\\n    {\\n        return transactionContext.ovmTIMESTAMP;\\n    }\\n\\n    /**\\n     * @notice Overrides NUMBER.\\n     * @return _NUMBER Value of the NUMBER within the transaction context.\\n     */\\n    function ovmNUMBER()\\n        override\\n        external\\n        view\\n        returns (\\n            uint256 _NUMBER\\n        )\\n    {\\n        return transactionContext.ovmNUMBER;\\n    }\\n\\n    /**\\n     * @notice Overrides GASLIMIT.\\n     * @return _GASLIMIT Value of the block's GASLIMIT within the transaction context.\\n     */\\n    function ovmGASLIMIT()\\n        override\\n        external\\n        view\\n        returns (\\n            uint256 _GASLIMIT\\n        )\\n    {\\n        return transactionContext.ovmGASLIMIT;\\n    }\\n\\n    /**\\n     * @notice Overrides CHAINID.\\n     * @return _CHAINID Value of the chain's CHAINID within the global context.\\n     */\\n    function ovmCHAINID()\\n        override\\n        external\\n        view\\n        returns (\\n            uint256 _CHAINID\\n        )\\n    {\\n        return globalContext.ovmCHAINID;\\n    }\\n\\n    /*********************************\\n     * Opcodes: L2 Execution Context *\\n     *********************************/\\n\\n    /**\\n     * @notice Specifies from which source (Sequencer or Queue) this transaction originated from.\\n     * @return _queueOrigin Enum indicating the ovmL1QUEUEORIGIN within the current message context.\\n     */\\n    function ovmL1QUEUEORIGIN()\\n        override\\n        external\\n        view\\n        returns (\\n            Lib_OVMCodec.QueueOrigin _queueOrigin\\n        )\\n    {\\n        return transactionContext.ovmL1QUEUEORIGIN;\\n    }\\n\\n    /**\\n     * @notice Specifies which L1 account, if any, sent this transaction by calling enqueue().\\n     * @return _l1TxOrigin Address of the account which sent the tx into L2 from L1.\\n     */\\n    function ovmL1TXORIGIN()\\n        override\\n        external\\n        view\\n        returns (\\n            address _l1TxOrigin\\n        )\\n    {\\n        return transactionContext.ovmL1TXORIGIN;\\n    }\\n\\n    /********************\\n     * Opcodes: Halting *\\n     ********************/\\n\\n    /**\\n     * @notice Overrides REVERT.\\n     * @param _data Bytes data to pass along with the REVERT.\\n     */\\n    function ovmREVERT(\\n        bytes memory _data\\n    )\\n        override\\n        public\\n    {\\n        _revertWithFlag(RevertFlag.INTENTIONAL_REVERT, _data);\\n    }\\n\\n\\n    /******************************\\n     * Opcodes: Contract Creation *\\n     ******************************/\\n\\n    /**\\n     * @notice Overrides CREATE.\\n     * @param _bytecode Code to be used to CREATE a new contract.\\n     * @return Address of the created contract.\\n     * @return Revert data, if and only if the creation threw an exception.\\n     */\\n    function ovmCREATE(\\n        bytes memory _bytecode\\n    )\\n        override\\n        public\\n        notStatic\\n        fixedGasDiscount(40000)\\n        returns (\\n            address,\\n            bytes memory\\n        )\\n    {\\n        // Creator is always the current ADDRESS.\\n        address creator = ovmADDRESS();\\n\\n        // Check that the deployer is whitelisted, or\\n        // that arbitrary contract deployment has been enabled.\\n        _checkDeployerAllowed(creator);\\n\\n        // Generate the correct CREATE address.\\n        address contractAddress = Lib_EthUtils.getAddressForCREATE(\\n            creator,\\n            _getAccountNonce(creator)\\n        );\\n\\n        return _createContract(\\n            contractAddress,\\n            _bytecode\\n        );\\n    }\\n\\n    /**\\n     * @notice Overrides CREATE2.\\n     * @param _bytecode Code to be used to CREATE2 a new contract.\\n     * @param _salt Value used to determine the contract's address.\\n     * @return Address of the created contract.\\n     * @return Revert data, if and only if the creation threw an exception.\\n     */\\n    function ovmCREATE2(\\n        bytes memory _bytecode,\\n        bytes32 _salt\\n    )\\n        override\\n        external\\n        notStatic\\n        fixedGasDiscount(40000)\\n        returns (\\n            address,\\n            bytes memory\\n        )\\n    {\\n        // Creator is always the current ADDRESS.\\n        address creator = ovmADDRESS();\\n\\n        // Check that the deployer is whitelisted, or\\n        // that arbitrary contract deployment has been enabled.\\n        _checkDeployerAllowed(creator);\\n\\n        // Generate the correct CREATE2 address.\\n        address contractAddress = Lib_EthUtils.getAddressForCREATE2(\\n            creator,\\n            _bytecode,\\n            _salt\\n        );\\n\\n        return _createContract(\\n            contractAddress,\\n            _bytecode\\n        );\\n    }\\n\\n\\n    /*******************************\\n     * Account Abstraction Opcodes *\\n     ******************************/\\n\\n    /**\\n     * Retrieves the nonce of the current ovmADDRESS.\\n     * @return _nonce Nonce of the current contract.\\n     */\\n    function ovmGETNONCE()\\n        override\\n        external\\n        returns (\\n            uint256 _nonce\\n        )\\n    {\\n        return _getAccountNonce(ovmADDRESS());\\n    }\\n\\n    /**\\n     * Bumps the nonce of the current ovmADDRESS by one.\\n     */\\n    function ovmINCREMENTNONCE()\\n        override\\n        external\\n        notStatic\\n    {\\n        address account = ovmADDRESS();\\n        uint256 nonce = _getAccountNonce(account);\\n\\n        // Prevent overflow.\\n        if (nonce + 1 > nonce) {\\n            _setAccountNonce(account, nonce + 1);\\n        }\\n    }\\n\\n    /**\\n     * Creates a new EOA contract account, for account abstraction.\\n     * @dev Essentially functions like ovmCREATE or ovmCREATE2, but we can bypass a lot of checks\\n     *      because the contract we're creating is trusted (no need to do safety checking or to\\n     *      handle unexpected reverts). Doesn't need to return an address because the address is\\n     *      assumed to be the user's actual address.\\n     * @param _messageHash Hash of a message signed by some user, for verification.\\n     * @param _v Signature `v` parameter.\\n     * @param _r Signature `r` parameter.\\n     * @param _s Signature `s` parameter.\\n     */\\n    function ovmCREATEEOA(\\n        bytes32 _messageHash,\\n        uint8 _v,\\n        bytes32 _r,\\n        bytes32 _s\\n    )\\n        override\\n        public\\n        notStatic\\n    {\\n        // Recover the EOA address from the message hash and signature parameters. Since we do the\\n        // hashing in advance, we don't have handle different message hashing schemes. Even if this\\n        // function were to return the wrong address (rather than explicitly returning the zero\\n        // address), the rest of the transaction would simply fail (since there's no EOA account to\\n        // actually execute the transaction).\\n        address eoa = ecrecover(\\n            _messageHash,\\n            _v + 27,\\n            _r,\\n            _s\\n        );\\n\\n        // Invalid signature is a case we proactively handle with a revert. We could alternatively\\n        // have this function return a `success` boolean, but this is just easier.\\n        if (eoa == address(0)) {\\n            ovmREVERT(bytes(\\\"Signature provided for EOA contract creation is invalid.\\\"));\\n        }\\n\\n        // If the user already has an EOA account, then there's no need to perform this operation.\\n        if (_hasEmptyAccount(eoa) == false) {\\n            return;\\n        }\\n\\n        // We always need to initialize the contract with the default account values.\\n        _initPendingAccount(eoa);\\n\\n        // Temporarily set the current address so it's easier to access on L2.\\n        address prevADDRESS = messageContext.ovmADDRESS;\\n        messageContext.ovmADDRESS = eoa;\\n\\n        // Creates a duplicate of the OVM_ProxyEOA located at 0x42....09. Uses the following\\n        // \\\"magic\\\" prefix to deploy an exact copy of the code:\\n        // PUSH1 0x0D   # size of this prefix in bytes\\n        // CODESIZE\\n        // SUB          # subtract prefix size from codesize\\n        // DUP1\\n        // PUSH1 0x0D\\n        // PUSH1 0x00\\n        // CODECOPY     # copy everything after prefix into memory at pos 0\\n        // PUSH1 0x00\\n        // RETURN       # return the copied code\\n        address proxyEOA = Lib_EthUtils.createContract(abi.encodePacked(\\n            hex\\\"600D380380600D6000396000f3\\\",\\n            ovmEXTCODECOPY(\\n                0x4200000000000000000000000000000000000009,\\n                0,\\n                ovmEXTCODESIZE(0x4200000000000000000000000000000000000009)\\n            )\\n        ));\\n\\n        // Reset the address now that we're done deploying.\\n        messageContext.ovmADDRESS = prevADDRESS;\\n\\n        // Commit the account with its final values.\\n        _commitPendingAccount(\\n            eoa,\\n            address(proxyEOA),\\n            keccak256(Lib_EthUtils.getCode(address(proxyEOA)))\\n        );\\n\\n        _setAccountNonce(eoa, 0);\\n    }\\n\\n\\n    /*********************************\\n     * Opcodes: Contract Interaction *\\n     *********************************/\\n\\n    /**\\n     * @notice Overrides CALL.\\n     * @param _gasLimit Amount of gas to be passed into this call.\\n     * @param _address Address of the contract to call.\\n     * @param _calldata Data to send along with the call.\\n     * @return _success Whether or not the call returned (rather than reverted).\\n     * @return _returndata Data returned by the call.\\n     */\\n    function ovmCALL(\\n        uint256 _gasLimit,\\n        address _address,\\n        bytes memory _calldata\\n    )\\n        override\\n        public\\n        fixedGasDiscount(100000)\\n        returns (\\n            bool _success,\\n            bytes memory _returndata\\n        )\\n    {\\n        // CALL updates the CALLER and ADDRESS.\\n        MessageContext memory nextMessageContext = messageContext;\\n        nextMessageContext.ovmCALLER = nextMessageContext.ovmADDRESS;\\n        nextMessageContext.ovmADDRESS = _address;\\n\\n        return _callContract(\\n            nextMessageContext,\\n            _gasLimit,\\n            _address,\\n            _calldata\\n        );\\n    }\\n\\n    /**\\n     * @notice Overrides STATICCALL.\\n     * @param _gasLimit Amount of gas to be passed into this call.\\n     * @param _address Address of the contract to call.\\n     * @param _calldata Data to send along with the call.\\n     * @return _success Whether or not the call returned (rather than reverted).\\n     * @return _returndata Data returned by the call.\\n     */\\n    function ovmSTATICCALL(\\n        uint256 _gasLimit,\\n        address _address,\\n        bytes memory _calldata\\n    )\\n        override\\n        external\\n        fixedGasDiscount(80000)\\n        returns (\\n            bool _success,\\n            bytes memory _returndata\\n        )\\n    {\\n        // STATICCALL updates the CALLER, updates the ADDRESS, and runs in a static context.\\n        MessageContext memory nextMessageContext = messageContext;\\n        nextMessageContext.ovmCALLER = nextMessageContext.ovmADDRESS;\\n        nextMessageContext.ovmADDRESS = _address;\\n        nextMessageContext.isStatic = true;\\n\\n        return _callContract(\\n            nextMessageContext,\\n            _gasLimit,\\n            _address,\\n            _calldata\\n        );\\n    }\\n\\n    /**\\n     * @notice Overrides DELEGATECALL.\\n     * @param _gasLimit Amount of gas to be passed into this call.\\n     * @param _address Address of the contract to call.\\n     * @param _calldata Data to send along with the call.\\n     * @return _success Whether or not the call returned (rather than reverted).\\n     * @return _returndata Data returned by the call.\\n     */\\n    function ovmDELEGATECALL(\\n        uint256 _gasLimit,\\n        address _address,\\n        bytes memory _calldata\\n    )\\n        override\\n        external\\n        fixedGasDiscount(40000)\\n        returns (\\n            bool _success,\\n            bytes memory _returndata\\n        )\\n    {\\n        // DELEGATECALL does not change anything about the message context.\\n        MessageContext memory nextMessageContext = messageContext;\\n\\n        return _callContract(\\n            nextMessageContext,\\n            _gasLimit,\\n            _address,\\n            _calldata\\n        );\\n    }\\n\\n\\n    /************************************\\n     * Opcodes: Contract Storage Access *\\n     ************************************/\\n\\n    /**\\n     * @notice Overrides SLOAD.\\n     * @param _key 32 byte key of the storage slot to load.\\n     * @return _value 32 byte value of the requested storage slot.\\n     */\\n    function ovmSLOAD(\\n        bytes32 _key\\n    )\\n        override\\n        external\\n        netGasCost(40000)\\n        returns (\\n            bytes32 _value\\n        )\\n    {\\n        // We always SLOAD from the storage of ADDRESS.\\n        address contractAddress = ovmADDRESS();\\n\\n        return _getContractStorage(\\n            contractAddress,\\n            _key\\n        );\\n    }\\n\\n    /**\\n     * @notice Overrides SSTORE.\\n     * @param _key 32 byte key of the storage slot to set.\\n     * @param _value 32 byte value for the storage slot.\\n     */\\n    function ovmSSTORE(\\n        bytes32 _key,\\n        bytes32 _value\\n    )\\n        override\\n        external\\n        notStatic\\n        netGasCost(60000)\\n    {\\n        // We always SSTORE to the storage of ADDRESS.\\n        address contractAddress = ovmADDRESS();\\n\\n        _putContractStorage(\\n            contractAddress,\\n            _key,\\n            _value\\n        );\\n    }\\n\\n\\n    /*********************************\\n     * Opcodes: Contract Code Access *\\n     *********************************/\\n\\n    /**\\n     * @notice Overrides EXTCODECOPY.\\n     * @param _contract Address of the contract to copy code from.\\n     * @param _offset Offset in bytes from the start of contract code to copy beyond.\\n     * @param _length Total number of bytes to copy from the contract's code.\\n     * @return _code Bytes of code copied from the requested contract.\\n     */\\n    function ovmEXTCODECOPY(\\n        address _contract,\\n        uint256 _offset,\\n        uint256 _length\\n    )\\n        override\\n        public\\n        returns (\\n            bytes memory _code\\n        )\\n    {\\n        return Lib_EthUtils.getCode(\\n            _getAccountEthAddress(_contract),\\n            _offset,\\n            _length\\n        );\\n    }\\n\\n    /**\\n     * @notice Overrides EXTCODESIZE.\\n     * @param _contract Address of the contract to query the size of.\\n     * @return _EXTCODESIZE Size of the requested contract in bytes.\\n     */\\n    function ovmEXTCODESIZE(\\n        address _contract\\n    )\\n        override\\n        public\\n        returns (\\n            uint256 _EXTCODESIZE\\n        )\\n    {\\n        return Lib_EthUtils.getCodeSize(\\n            _getAccountEthAddress(_contract)\\n        );\\n    }\\n\\n    /**\\n     * @notice Overrides EXTCODEHASH.\\n     * @param _contract Address of the contract to query the hash of.\\n     * @return _EXTCODEHASH Hash of the requested contract.\\n     */\\n    function ovmEXTCODEHASH(\\n        address _contract\\n    )\\n        override\\n        external\\n        returns (\\n            bytes32 _EXTCODEHASH\\n        )\\n    {\\n        return Lib_EthUtils.getCodeHash(\\n            _getAccountEthAddress(_contract)\\n        );\\n    }\\n\\n    /***************************************\\n     * Public Functions: Execution Context *\\n     ***************************************/\\n\\n    function getMaxTransactionGasLimit()\\n        external\\n        view\\n        override\\n        returns (\\n            uint256 _maxTransactionGasLimit\\n        )\\n    {\\n        return gasMeterConfig.maxTransactionGasLimit;\\n    }\\n\\n    /********************************************\\n     * Public Functions: Deployment Whitelisting *\\n     ********************************************/\\n\\n    /**\\n     * Checks whether the given address is on the whitelist to ovmCREATE/ovmCREATE2, and reverts if not.\\n     * @param _deployerAddress Address attempting to deploy a contract.\\n     */\\n    function _checkDeployerAllowed(\\n        address _deployerAddress\\n    )\\n        internal\\n    {\\n        // From an OVM semantics perspective, this will appear identical to\\n        // the deployer ovmCALLing the whitelist.  This is fine--in a sense, we are forcing them to.\\n        (bool success, bytes memory data) = ovmCALL(\\n            gasleft(),\\n            0x4200000000000000000000000000000000000002,\\n            abi.encodeWithSignature(\\\"isDeployerAllowed(address)\\\", _deployerAddress)\\n        );\\n        bool isAllowed = abi.decode(data, (bool));\\n\\n        if (!isAllowed || !success) {\\n            _revertWithFlag(RevertFlag.CREATOR_NOT_ALLOWED);\\n        }\\n    }\\n\\n    /********************************************\\n     * Internal Functions: Contract Interaction *\\n     ********************************************/\\n\\n    /**\\n     * Creates a new contract and associates it with some contract address.\\n     * @param _contractAddress Address to associate the created contract with.\\n     * @param _bytecode Bytecode to be used to create the contract.\\n     * @return Final OVM contract address.\\n     * @return Revertdata, if and only if the creation threw an exception.\\n     */\\n    function _createContract(\\n        address _contractAddress,\\n        bytes memory _bytecode\\n    )\\n        internal\\n        returns (\\n            address,\\n            bytes memory\\n        )\\n    {\\n        // We always update the nonce of the creating account, even if the creation fails.\\n        _setAccountNonce(ovmADDRESS(), _getAccountNonce(ovmADDRESS()) + 1);\\n\\n        // We're stepping into a CREATE or CREATE2, so we need to update ADDRESS to point\\n        // to the contract's associated address and CALLER to point to the previous ADDRESS.\\n        MessageContext memory nextMessageContext = messageContext;\\n        nextMessageContext.ovmCALLER = messageContext.ovmADDRESS;\\n        nextMessageContext.ovmADDRESS = _contractAddress;\\n\\n        // Run the common logic which occurs between call-type and create-type messages,\\n        // passing in the creation bytecode and `true` to trigger create-specific logic.\\n        (bool success, bytes memory data) = _handleExternalMessage(\\n            nextMessageContext,\\n            gasleft(),\\n            _contractAddress,\\n            _bytecode,\\n            true\\n        );\\n\\n        // Yellow paper requires that address returned is zero if the contract deployment fails.\\n        return (\\n            success ? _contractAddress : address(0),\\n            data\\n        );\\n    }\\n\\n    /**\\n     * Calls the deployed contract associated with a given address.\\n     * @param _nextMessageContext Message context to be used for the call.\\n     * @param _gasLimit Amount of gas to be passed into this call.\\n     * @param _contract OVM address to be called.\\n     * @param _calldata Data to send along with the call.\\n     * @return _success Whether or not the call returned (rather than reverted).\\n     * @return _returndata Data returned by the call.\\n     */\\n    function _callContract(\\n        MessageContext memory _nextMessageContext,\\n        uint256 _gasLimit,\\n        address _contract,\\n        bytes memory _calldata\\n    )\\n        internal\\n        returns (\\n            bool _success,\\n            bytes memory _returndata\\n        )\\n    {\\n        // We reserve addresses of the form 0xdeaddeaddead...NNNN for the container contracts in L2 geth.\\n        // So, we block calls to these addresses since they are not safe to run as an OVM contract itself.\\n        if (\\n            (uint256(_contract) & uint256(0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0000))\\n            == uint256(0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000)\\n        ) {\\n            // EVM does not return data in the success case, see: https://github.com/ethereum/go-ethereum/blob/aae7660410f0ef90279e14afaaf2f429fdc2a186/core/vm/instructions.go#L600-L604\\n            return (true, hex'');\\n        }\\n\\n        // Both 0x0000... and the EVM precompiles have the same address on L1 and L2 --> no trie lookup needed.\\n        address codeContractAddress =\\n            uint(_contract) < 100\\n            ? _contract\\n            : _getAccountEthAddress(_contract);\\n\\n        return _handleExternalMessage(\\n            _nextMessageContext,\\n            _gasLimit,\\n            codeContractAddress,\\n            _calldata,\\n            false\\n        );\\n    }\\n\\n    /**\\n     * Handles all interactions which involve the execution manager calling out to untrusted code (both calls and creates).\\n     * Ensures that OVM-related measures are enforced, including L2 gas refunds, nuisance gas, and flagged reversions.\\n     *\\n     * @param _nextMessageContext Message context to be used for the external message.\\n     * @param _gasLimit Amount of gas to be passed into this message.\\n     * @param _contract OVM address being called or deployed to\\n     * @param _data Data for the message (either calldata or creation code)\\n     * @param _isCreate Whether this is a create-type message.\\n     * @return Whether or not the message (either a call or deployment) succeeded.\\n     * @return Data returned by the message.\\n     */\\n    function _handleExternalMessage(\\n        MessageContext memory _nextMessageContext,\\n        uint256 _gasLimit,\\n        address _contract,\\n        bytes memory _data,\\n        bool _isCreate\\n    )\\n        internal\\n        returns (\\n            bool,\\n            bytes memory\\n        )\\n    {\\n        // We need to switch over to our next message context for the duration of this call.\\n        MessageContext memory prevMessageContext = messageContext;\\n        _switchMessageContext(prevMessageContext, _nextMessageContext);\\n\\n        // Nuisance gas is a system used to bound the ability for an attacker to make fraud proofs\\n        // expensive by touching a lot of different accounts or storage slots. Since most contracts\\n        // only use a few storage slots during any given transaction, this shouldn't be a limiting\\n        // factor.\\n        uint256 prevNuisanceGasLeft = messageRecord.nuisanceGasLeft;\\n        uint256 nuisanceGasLimit = _getNuisanceGasLimit(_gasLimit);\\n        messageRecord.nuisanceGasLeft = nuisanceGasLimit;\\n\\n        // Make the call and make sure to pass in the gas limit. Another instance of hidden\\n        // complexity. `_contract` is guaranteed to be a safe contract, meaning its return/revert\\n        // behavior can be controlled. In particular, we enforce that flags are passed through\\n        // revert data as to retrieve execution metadata that would normally be reverted out of\\n        // existence.\\n\\n        bool success;\\n        bytes memory returndata;\\n        if (_isCreate) {\\n            // safeCREATE() is a function which replicates a CREATE message, but uses return values\\n            // Which match that of CALL (i.e. bool, bytes).  This allows many security checks to be\\n            // to be shared between untrusted call and create call frames.\\n            (success, returndata) = address(this).call(\\n                abi.encodeWithSelector(\\n                    this.safeCREATE.selector,\\n                    _gasLimit,\\n                    _data,\\n                    _contract\\n                )\\n            );\\n        } else {\\n            (success, returndata) = _contract.call{gas: _gasLimit}(_data);\\n        }\\n\\n        // Switch back to the original message context now that we're out of the call.\\n        _switchMessageContext(_nextMessageContext, prevMessageContext);\\n\\n        // Assuming there were no reverts, the message record should be accurate here. We'll update\\n        // this value in the case of a revert.\\n        uint256 nuisanceGasLeft = messageRecord.nuisanceGasLeft;\\n\\n        // Reverts at this point are completely OK, but we need to make a few updates based on the\\n        // information passed through the revert.\\n        if (success == false) {\\n            (\\n                RevertFlag flag,\\n                uint256 nuisanceGasLeftPostRevert,\\n                uint256 ovmGasRefund,\\n                bytes memory returndataFromFlag\\n            ) = _decodeRevertData(returndata);\\n\\n            // INVALID_STATE_ACCESS is the only flag that triggers an immediate abort of the\\n            // parent EVM message. This behavior is necessary because INVALID_STATE_ACCESS must\\n            // halt any further transaction execution that could impact the execution result.\\n            if (flag == RevertFlag.INVALID_STATE_ACCESS) {\\n                _revertWithFlag(flag);\\n            }\\n\\n            // INTENTIONAL_REVERT, UNSAFE_BYTECODE, STATIC_VIOLATION, and CREATOR_NOT_ALLOWED aren't\\n            // dependent on the input state, so we can just handle them like standard reverts. Our only change here\\n            // is to record the gas refund reported by the call (enforced by safety checking).\\n            if (\\n                flag == RevertFlag.INTENTIONAL_REVERT\\n                || flag == RevertFlag.UNSAFE_BYTECODE\\n                || flag == RevertFlag.STATIC_VIOLATION\\n                || flag == RevertFlag.CREATOR_NOT_ALLOWED\\n            ) {\\n                transactionRecord.ovmGasRefund = ovmGasRefund;\\n            }\\n\\n            // INTENTIONAL_REVERT needs to pass up the user-provided return data encoded into the\\n            // flag, *not* the full encoded flag. All other revert types return no data.\\n            if (\\n                flag == RevertFlag.INTENTIONAL_REVERT\\n                || _isCreate\\n            ) {\\n                returndata = returndataFromFlag;\\n            } else {\\n                returndata = hex'';\\n            }\\n\\n            // Reverts mean we need to use up whatever \\\"nuisance gas\\\" was used by the call.\\n            // EXCEEDS_NUISANCE_GAS explicitly reduces the remaining nuisance gas for this message\\n            // to zero. OUT_OF_GAS is a \\\"pseudo\\\" flag given that messages return no data when they\\n            // run out of gas, so we have to treat this like EXCEEDS_NUISANCE_GAS. All other flags\\n            // will simply pass up the remaining nuisance gas.\\n            nuisanceGasLeft = nuisanceGasLeftPostRevert;\\n        }\\n\\n        // We need to reset the nuisance gas back to its original value minus the amount used here.\\n        messageRecord.nuisanceGasLeft = prevNuisanceGasLeft - (nuisanceGasLimit - nuisanceGasLeft);\\n\\n        return (\\n            success,\\n            returndata\\n        );\\n    }\\n\\n    /**\\n     * Handles the creation-specific safety measures required for OVM contract deployment.\\n     * This function sanitizes the return types for creation messages to match calls (bool, bytes),\\n     * by being an external function which the EM can call, that mimics the success/fail case of the CREATE.\\n     * This allows for consistent handling of both types of messages in _handleExternalMessage().\\n     * Having this step occur as a separate call frame also allows us to easily revert the\\n     * contract deployment in the event that the code is unsafe.\\n     *\\n     * @param _gasLimit Amount of gas to be passed into this creation.\\n     * @param _creationCode Code to pass into CREATE for deployment.\\n     * @param _address OVM address being deployed to.\\n     */\\n    function safeCREATE(\\n        uint _gasLimit,\\n        bytes memory _creationCode,\\n        address _address\\n    )\\n        external\\n    {\\n        // The only way this should callable is from within _createContract(),\\n        // and it should DEFINITELY not be callable by a non-EM code contract.\\n        if (msg.sender != address(this)) {\\n            return;\\n        }\\n        // Check that there is not already code at this address.\\n        if (_hasEmptyAccount(_address) == false) {\\n            // Note: in the EVM, this case burns all allotted gas.  For improved\\n            // developer experience, we do return the remaining gas.\\n            _revertWithFlag(\\n                RevertFlag.CREATE_COLLISION,\\n                Lib_ErrorUtils.encodeRevertString(\\\"A contract has already been deployed to this address\\\")\\n            );\\n        }\\n\\n        // Check the creation bytecode against the OVM_SafetyChecker.\\n        if (ovmSafetyChecker.isBytecodeSafe(_creationCode) == false) {\\n            _revertWithFlag(\\n                RevertFlag.UNSAFE_BYTECODE,\\n                Lib_ErrorUtils.encodeRevertString(\\\"Contract creation code contains unsafe opcodes. Did you use the right compiler or pass an unsafe constructor argument?\\\")\\n            );\\n        }\\n\\n        // We always need to initialize the contract with the default account values.\\n        _initPendingAccount(_address);\\n\\n        // Actually execute the EVM create message.\\n        // NOTE: The inline assembly below means we can NOT make any evm calls between here and then.\\n        address ethAddress = Lib_EthUtils.createContract(_creationCode);\\n\\n        if (ethAddress == address(0)) {\\n            // If the creation fails, the EVM lets us grab its revert data. This may contain a revert flag\\n            // to be used above in _handleExternalMessage, so we pass the revert data back up unmodified.\\n            assembly {\\n                returndatacopy(0,0,returndatasize())\\n                revert(0, returndatasize())\\n            }\\n        }\\n\\n        // Again simply checking that the deployed code is safe too. Contracts can generate\\n        // arbitrary deployment code, so there's no easy way to analyze this beforehand.\\n        bytes memory deployedCode = Lib_EthUtils.getCode(ethAddress);\\n        if (ovmSafetyChecker.isBytecodeSafe(deployedCode) == false) {\\n            _revertWithFlag(\\n                RevertFlag.UNSAFE_BYTECODE,\\n                Lib_ErrorUtils.encodeRevertString(\\\"Constructor attempted to deploy unsafe bytecode.\\\")\\n            );\\n        }\\n\\n        // Contract creation didn't need to be reverted and the bytecode is safe. We finish up by\\n        // associating the desired address with the newly created contract's code hash and address.\\n        _commitPendingAccount(\\n            _address,\\n            ethAddress,\\n            Lib_EthUtils.getCodeHash(ethAddress)\\n        );\\n    }\\n\\n    /******************************************\\n     * Internal Functions: State Manipulation *\\n     ******************************************/\\n\\n    /**\\n     * Checks whether an account exists within the OVM_StateManager.\\n     * @param _address Address of the account to check.\\n     * @return _exists Whether or not the account exists.\\n     */\\n    function _hasAccount(\\n        address _address\\n    )\\n        internal\\n        returns (\\n            bool _exists\\n        )\\n    {\\n        _checkAccountLoad(_address);\\n        return ovmStateManager.hasAccount(_address);\\n    }\\n\\n    /**\\n     * Checks whether a known empty account exists within the OVM_StateManager.\\n     * @param _address Address of the account to check.\\n     * @return _exists Whether or not the account empty exists.\\n     */\\n    function _hasEmptyAccount(\\n        address _address\\n    )\\n        internal\\n        returns (\\n            bool _exists\\n        )\\n    {\\n        _checkAccountLoad(_address);\\n        return ovmStateManager.hasEmptyAccount(_address);\\n    }\\n\\n    /**\\n     * Sets the nonce of an account.\\n     * @param _address Address of the account to modify.\\n     * @param _nonce New account nonce.\\n     */\\n    function _setAccountNonce(\\n        address _address,\\n        uint256 _nonce\\n    )\\n        internal\\n    {\\n        _checkAccountChange(_address);\\n        ovmStateManager.setAccountNonce(_address, _nonce);\\n    }\\n\\n    /**\\n     * Gets the nonce of an account.\\n     * @param _address Address of the account to access.\\n     * @return _nonce Nonce of the account.\\n     */\\n    function _getAccountNonce(\\n        address _address\\n    )\\n        internal\\n        returns (\\n            uint256 _nonce\\n        )\\n    {\\n        _checkAccountLoad(_address);\\n        return ovmStateManager.getAccountNonce(_address);\\n    }\\n\\n    /**\\n     * Retrieves the Ethereum address of an account.\\n     * @param _address Address of the account to access.\\n     * @return _ethAddress Corresponding Ethereum address.\\n     */\\n    function _getAccountEthAddress(\\n        address _address\\n    )\\n        internal\\n        returns (\\n            address _ethAddress\\n        )\\n    {\\n        _checkAccountLoad(_address);\\n        return ovmStateManager.getAccountEthAddress(_address);\\n    }\\n\\n    /**\\n     * Creates the default account object for the given address.\\n     * @param _address Address of the account create.\\n     */\\n    function _initPendingAccount(\\n        address _address\\n    )\\n        internal\\n    {\\n        // Although it seems like `_checkAccountChange` would be more appropriate here, we don't\\n        // actually consider an account \\\"changed\\\" until it's inserted into the state (in this case\\n        // by `_commitPendingAccount`).\\n        _checkAccountLoad(_address);\\n        ovmStateManager.initPendingAccount(_address);\\n    }\\n\\n    /**\\n     * Stores additional relevant data for a new account, thereby \\\"committing\\\" it to the state.\\n     * This function is only called during `ovmCREATE` and `ovmCREATE2` after a successful contract\\n     * creation.\\n     * @param _address Address of the account to commit.\\n     * @param _ethAddress Address of the associated deployed contract.\\n     * @param _codeHash Hash of the code stored at the address.\\n     */\\n    function _commitPendingAccount(\\n        address _address,\\n        address _ethAddress,\\n        bytes32 _codeHash\\n    )\\n        internal\\n    {\\n        _checkAccountChange(_address);\\n        ovmStateManager.commitPendingAccount(\\n            _address,\\n            _ethAddress,\\n            _codeHash\\n        );\\n    }\\n\\n    /**\\n     * Retrieves the value of a storage slot.\\n     * @param _contract Address of the contract to query.\\n     * @param _key 32 byte key of the storage slot.\\n     * @return _value 32 byte storage slot value.\\n     */\\n    function _getContractStorage(\\n        address _contract,\\n        bytes32 _key\\n    )\\n        internal\\n        returns (\\n            bytes32 _value\\n        )\\n    {\\n        _checkContractStorageLoad(_contract, _key);\\n        return ovmStateManager.getContractStorage(_contract, _key);\\n    }\\n\\n    /**\\n     * Sets the value of a storage slot.\\n     * @param _contract Address of the contract to modify.\\n     * @param _key 32 byte key of the storage slot.\\n     * @param _value 32 byte storage slot value.\\n     */\\n    function _putContractStorage(\\n        address _contract,\\n        bytes32 _key,\\n        bytes32 _value\\n    )\\n        internal\\n    {\\n        // We don't set storage if the value didn't change. Although this acts as a convenient\\n        // optimization, it's also necessary to avoid the case in which a contract with no storage\\n        // attempts to store the value \\\"0\\\" at any key. Putting this value (and therefore requiring\\n        // that the value be committed into the storage trie after execution) would incorrectly\\n        // modify the storage root.\\n        if (_getContractStorage(_contract, _key) == _value) {\\n            return;\\n        }\\n\\n        _checkContractStorageChange(_contract, _key);\\n        ovmStateManager.putContractStorage(_contract, _key, _value);\\n    }\\n\\n    /**\\n     * Validation whenever a contract needs to be loaded. Checks that the account exists, charges\\n     * nuisance gas if the account hasn't been loaded before.\\n     * @param _address Address of the account to load.\\n     */\\n    function _checkAccountLoad(\\n        address _address\\n    )\\n        internal\\n    {\\n        // See `_checkContractStorageLoad` for more information.\\n        if (gasleft() < MIN_GAS_FOR_INVALID_STATE_ACCESS) {\\n            _revertWithFlag(RevertFlag.OUT_OF_GAS);\\n        }\\n\\n        // See `_checkContractStorageLoad` for more information.\\n        if (ovmStateManager.hasAccount(_address) == false) {\\n            _revertWithFlag(RevertFlag.INVALID_STATE_ACCESS);\\n        }\\n\\n        // Check whether the account has been loaded before and mark it as loaded if not. We need\\n        // this because \\\"nuisance gas\\\" only applies to the first time that an account is loaded.\\n        (\\n            bool _wasAccountAlreadyLoaded\\n        ) = ovmStateManager.testAndSetAccountLoaded(_address);\\n\\n        // If we hadn't already loaded the account, then we'll need to charge \\\"nuisance gas\\\" based\\n        // on the size of the contract code.\\n        if (_wasAccountAlreadyLoaded == false) {\\n            _useNuisanceGas(\\n                (Lib_EthUtils.getCodeSize(_getAccountEthAddress(_address)) * NUISANCE_GAS_PER_CONTRACT_BYTE) + MIN_NUISANCE_GAS_PER_CONTRACT\\n            );\\n        }\\n    }\\n\\n    /**\\n     * Validation whenever a contract needs to be changed. Checks that the account exists, charges\\n     * nuisance gas if the account hasn't been changed before.\\n     * @param _address Address of the account to change.\\n     */\\n    function _checkAccountChange(\\n        address _address\\n    )\\n        internal\\n    {\\n        // Start by checking for a load as we only want to charge nuisance gas proportional to\\n        // contract size once.\\n        _checkAccountLoad(_address);\\n\\n        // Check whether the account has been changed before and mark it as changed if not. We need\\n        // this because \\\"nuisance gas\\\" only applies to the first time that an account is changed.\\n        (\\n            bool _wasAccountAlreadyChanged\\n        ) = ovmStateManager.testAndSetAccountChanged(_address);\\n\\n        // If we hadn't already loaded the account, then we'll need to charge \\\"nuisance gas\\\" based\\n        // on the size of the contract code.\\n        if (_wasAccountAlreadyChanged == false) {\\n            ovmStateManager.incrementTotalUncommittedAccounts();\\n            _useNuisanceGas(\\n                (Lib_EthUtils.getCodeSize(_getAccountEthAddress(_address)) * NUISANCE_GAS_PER_CONTRACT_BYTE) + MIN_NUISANCE_GAS_PER_CONTRACT\\n            );\\n        }\\n    }\\n\\n    /**\\n     * Validation whenever a slot needs to be loaded. Checks that the account exists, charges\\n     * nuisance gas if the slot hasn't been loaded before.\\n     * @param _contract Address of the account to load from.\\n     * @param _key 32 byte key to load.\\n     */\\n    function _checkContractStorageLoad(\\n        address _contract,\\n        bytes32 _key\\n    )\\n        internal\\n    {\\n        // Another case of hidden complexity. If we didn't enforce this requirement, then a\\n        // contract could pass in just enough gas to cause the INVALID_STATE_ACCESS check to fail\\n        // on L1 but not on L2. A contract could use this behavior to prevent the\\n        // OVM_ExecutionManager from detecting an invalid state access. Reverting with OUT_OF_GAS\\n        // allows us to also charge for the full message nuisance gas, because you deserve that for\\n        // trying to break the contract in this way.\\n        if (gasleft() < MIN_GAS_FOR_INVALID_STATE_ACCESS) {\\n            _revertWithFlag(RevertFlag.OUT_OF_GAS);\\n        }\\n\\n        // We need to make sure that the transaction isn't trying to access storage that hasn't\\n        // been provided to the OVM_StateManager. We'll immediately abort if this is the case.\\n        // We know that we have enough gas to do this check because of the above test.\\n        if (ovmStateManager.hasContractStorage(_contract, _key) == false) {\\n            _revertWithFlag(RevertFlag.INVALID_STATE_ACCESS);\\n        }\\n\\n        // Check whether the slot has been loaded before and mark it as loaded if not. We need\\n        // this because \\\"nuisance gas\\\" only applies to the first time that a slot is loaded.\\n        (\\n            bool _wasContractStorageAlreadyLoaded\\n        ) = ovmStateManager.testAndSetContractStorageLoaded(_contract, _key);\\n\\n        // If we hadn't already loaded the account, then we'll need to charge some fixed amount of\\n        // \\\"nuisance gas\\\".\\n        if (_wasContractStorageAlreadyLoaded == false) {\\n            _useNuisanceGas(NUISANCE_GAS_SLOAD);\\n        }\\n    }\\n\\n    /**\\n     * Validation whenever a slot needs to be changed. Checks that the account exists, charges\\n     * nuisance gas if the slot hasn't been changed before.\\n     * @param _contract Address of the account to change.\\n     * @param _key 32 byte key to change.\\n     */\\n    function _checkContractStorageChange(\\n        address _contract,\\n        bytes32 _key\\n    )\\n        internal\\n    {\\n        // Start by checking for load to make sure we have the storage slot and that we charge the\\n        // \\\"nuisance gas\\\" necessary to prove the storage slot state.\\n        _checkContractStorageLoad(_contract, _key);\\n\\n        // Check whether the slot has been changed before and mark it as changed if not. We need\\n        // this because \\\"nuisance gas\\\" only applies to the first time that a slot is changed.\\n        (\\n            bool _wasContractStorageAlreadyChanged\\n        ) = ovmStateManager.testAndSetContractStorageChanged(_contract, _key);\\n\\n        // If we hadn't already changed the account, then we'll need to charge some fixed amount of\\n        // \\\"nuisance gas\\\".\\n        if (_wasContractStorageAlreadyChanged == false) {\\n            // Changing a storage slot means that we're also going to have to change the\\n            // corresponding account, so do an account change check.\\n            _checkAccountChange(_contract);\\n\\n            ovmStateManager.incrementTotalUncommittedContractStorage();\\n            _useNuisanceGas(NUISANCE_GAS_SSTORE);\\n        }\\n    }\\n\\n\\n    /************************************\\n     * Internal Functions: Revert Logic *\\n     ************************************/\\n\\n    /**\\n     * Simple encoding for revert data.\\n     * @param _flag Flag to revert with.\\n     * @param _data Additional user-provided revert data.\\n     * @return _revertdata Encoded revert data.\\n     */\\n    function _encodeRevertData(\\n        RevertFlag _flag,\\n        bytes memory _data\\n    )\\n        internal\\n        view\\n        returns (\\n            bytes memory _revertdata\\n        )\\n    {\\n        // Out of gas and create exceptions will fundamentally return no data, so simulating it shouldn't either.\\n        if (\\n            _flag == RevertFlag.OUT_OF_GAS\\n        ) {\\n            return bytes('');\\n        }\\n\\n        // INVALID_STATE_ACCESS doesn't need to return any data other than the flag.\\n        if (_flag == RevertFlag.INVALID_STATE_ACCESS) {\\n            return abi.encode(\\n                _flag,\\n                0,\\n                0,\\n                bytes('')\\n            );\\n        }\\n\\n        // Just ABI encode the rest of the parameters.\\n        return abi.encode(\\n            _flag,\\n            messageRecord.nuisanceGasLeft,\\n            transactionRecord.ovmGasRefund,\\n            _data\\n        );\\n    }\\n\\n    /**\\n     * Simple decoding for revert data.\\n     * @param _revertdata Revert data to decode.\\n     * @return _flag Flag used to revert.\\n     * @return _nuisanceGasLeft Amount of nuisance gas unused by the message.\\n     * @return _ovmGasRefund Amount of gas refunded during the message.\\n     * @return _data Additional user-provided revert data.\\n     */\\n    function _decodeRevertData(\\n        bytes memory _revertdata\\n    )\\n        internal\\n        pure\\n        returns (\\n            RevertFlag _flag,\\n            uint256 _nuisanceGasLeft,\\n            uint256 _ovmGasRefund,\\n            bytes memory _data\\n        )\\n    {\\n        // A length of zero means the call ran out of gas, just return empty data.\\n        if (_revertdata.length == 0) {\\n            return (\\n                RevertFlag.OUT_OF_GAS,\\n                0,\\n                0,\\n                bytes('')\\n            );\\n        }\\n\\n        // ABI decode the incoming data.\\n        return abi.decode(_revertdata, (RevertFlag, uint256, uint256, bytes));\\n    }\\n\\n    /**\\n     * Causes a message to revert or abort.\\n     * @param _flag Flag to revert with.\\n     * @param _data Additional user-provided data.\\n     */\\n    function _revertWithFlag(\\n        RevertFlag _flag,\\n        bytes memory _data\\n    )\\n        internal\\n        view\\n    {\\n        bytes memory revertdata = _encodeRevertData(\\n            _flag,\\n            _data\\n        );\\n\\n        assembly {\\n            revert(add(revertdata, 0x20), mload(revertdata))\\n        }\\n    }\\n\\n    /**\\n     * Causes a message to revert or abort.\\n     * @param _flag Flag to revert with.\\n     */\\n    function _revertWithFlag(\\n        RevertFlag _flag\\n    )\\n        internal\\n    {\\n        _revertWithFlag(_flag, bytes(''));\\n    }\\n\\n\\n    /******************************************\\n     * Internal Functions: Nuisance Gas Logic *\\n     ******************************************/\\n\\n    /**\\n     * Computes the nuisance gas limit from the gas limit.\\n     * @dev This function is currently using a naive implementation whereby the nuisance gas limit\\n     *      is set to exactly equal the lesser of the gas limit or remaining gas. It's likely that\\n     *      this implementation is perfectly fine, but we may change this formula later.\\n     * @param _gasLimit Gas limit to compute from.\\n     * @return _nuisanceGasLimit Computed nuisance gas limit.\\n     */\\n    function _getNuisanceGasLimit(\\n        uint256 _gasLimit\\n    )\\n        internal\\n        view\\n        returns (\\n            uint256 _nuisanceGasLimit\\n        )\\n    {\\n        return _gasLimit < gasleft() ? _gasLimit : gasleft();\\n    }\\n\\n    /**\\n     * Uses a certain amount of nuisance gas.\\n     * @param _amount Amount of nuisance gas to use.\\n     */\\n    function _useNuisanceGas(\\n        uint256 _amount\\n    )\\n        internal\\n    {\\n        // Essentially the same as a standard OUT_OF_GAS, except we also retain a record of the gas\\n        // refund to be given at the end of the transaction.\\n        if (messageRecord.nuisanceGasLeft < _amount) {\\n            _revertWithFlag(RevertFlag.EXCEEDS_NUISANCE_GAS);\\n        }\\n\\n        messageRecord.nuisanceGasLeft -= _amount;\\n    }\\n\\n\\n    /************************************\\n     * Internal Functions: Gas Metering *\\n     ************************************/\\n\\n    /**\\n     * Checks whether a transaction needs to start a new epoch and does so if necessary.\\n     * @param _timestamp Transaction timestamp.\\n     */\\n    function _checkNeedsNewEpoch(\\n        uint256 _timestamp\\n    )\\n        internal\\n    {\\n        if (\\n            _timestamp >= (\\n                _getGasMetadata(GasMetadataKey.CURRENT_EPOCH_START_TIMESTAMP)\\n                + gasMeterConfig.secondsPerEpoch\\n            )\\n        ) {\\n            _putGasMetadata(\\n                GasMetadataKey.CURRENT_EPOCH_START_TIMESTAMP,\\n                _timestamp\\n            );\\n\\n            _putGasMetadata(\\n                GasMetadataKey.PREV_EPOCH_SEQUENCER_QUEUE_GAS,\\n                _getGasMetadata(\\n                    GasMetadataKey.CUMULATIVE_SEQUENCER_QUEUE_GAS\\n                )\\n            );\\n\\n            _putGasMetadata(\\n                GasMetadataKey.PREV_EPOCH_L1TOL2_QUEUE_GAS,\\n                _getGasMetadata(\\n                    GasMetadataKey.CUMULATIVE_L1TOL2_QUEUE_GAS\\n                )\\n            );\\n        }\\n    }\\n\\n    /**\\n     * Validates the input values of a transaction.\\n     * @return _valid Whether or not the transaction data is valid.\\n     */\\n    function _isValidInput(\\n        Lib_OVMCodec.Transaction memory _transaction\\n    )\\n        view\\n        internal\\n        returns (\\n            bool\\n        )\\n    {\\n        // Prevent reentrancy to run():\\n        // This check prevents calling run with the default ovmNumber.\\n        // Combined with the first check in run():\\n        //      if (transactionContext.ovmNUMBER != DEFAULT_UINT256) { return; }\\n        // It should be impossible to re-enter since run() returns before any other call frames are created.\\n        // Since this value is already being written to storage, we save much gas compared to\\n        // using the standard nonReentrant pattern.\\n        if (_transaction.blockNumber == DEFAULT_UINT256)  {\\n            return false;\\n        }\\n\\n        if (_isValidGasLimit(_transaction.gasLimit, _transaction.l1QueueOrigin) == false) {\\n            return false;\\n        }\\n\\n        return true;\\n    }\\n\\n    /**\\n     * Validates the gas limit for a given transaction.\\n     * @param _gasLimit Gas limit provided by the transaction.\\n     * param _queueOrigin Queue from which the transaction originated.\\n     * @return _valid Whether or not the gas limit is valid.\\n     */\\n    function _isValidGasLimit(\\n        uint256 _gasLimit,\\n        Lib_OVMCodec.QueueOrigin // _queueOrigin\\n    )\\n        view\\n        internal\\n        returns (\\n            bool _valid\\n        )\\n    {\\n        // Always have to be below the maximum gas limit.\\n        if (_gasLimit > gasMeterConfig.maxTransactionGasLimit) {\\n            return false;\\n        }\\n\\n        // Always have to be above the minimum gas limit.\\n        if (_gasLimit < gasMeterConfig.minTransactionGasLimit) {\\n            return false;\\n        }\\n\\n        // TEMPORARY: Gas metering is disabled for minnet.\\n        return true;\\n        // GasMetadataKey cumulativeGasKey;\\n        // GasMetadataKey prevEpochGasKey;\\n        // if (_queueOrigin == Lib_OVMCodec.QueueOrigin.SEQUENCER_QUEUE) {\\n        //     cumulativeGasKey = GasMetadataKey.CUMULATIVE_SEQUENCER_QUEUE_GAS;\\n        //     prevEpochGasKey = GasMetadataKey.PREV_EPOCH_SEQUENCER_QUEUE_GAS;\\n        // } else {\\n        //     cumulativeGasKey = GasMetadataKey.CUMULATIVE_L1TOL2_QUEUE_GAS;\\n        //     prevEpochGasKey = GasMetadataKey.PREV_EPOCH_L1TOL2_QUEUE_GAS;\\n        // }\\n\\n        // return (\\n        //     (\\n        //         _getGasMetadata(cumulativeGasKey)\\n        //         - _getGasMetadata(prevEpochGasKey)\\n        //         + _gasLimit\\n        //     ) < gasMeterConfig.maxGasPerQueuePerEpoch\\n        // );\\n    }\\n\\n    /**\\n     * Updates the cumulative gas after a transaction.\\n     * @param _gasUsed Gas used by the transaction.\\n     * @param _queueOrigin Queue from which the transaction originated.\\n     */\\n    function _updateCumulativeGas(\\n        uint256 _gasUsed,\\n        Lib_OVMCodec.QueueOrigin _queueOrigin\\n    )\\n        internal\\n    {\\n        GasMetadataKey cumulativeGasKey;\\n        if (_queueOrigin == Lib_OVMCodec.QueueOrigin.SEQUENCER_QUEUE) {\\n            cumulativeGasKey = GasMetadataKey.CUMULATIVE_SEQUENCER_QUEUE_GAS;\\n        } else {\\n            cumulativeGasKey = GasMetadataKey.CUMULATIVE_L1TOL2_QUEUE_GAS;\\n        }\\n\\n        _putGasMetadata(\\n            cumulativeGasKey,\\n            (\\n                _getGasMetadata(cumulativeGasKey)\\n                + gasMeterConfig.minTransactionGasLimit\\n                + _gasUsed\\n                - transactionRecord.ovmGasRefund\\n            )\\n        );\\n    }\\n\\n    /**\\n     * Retrieves the value of a gas metadata key.\\n     * @param _key Gas metadata key to retrieve.\\n     * @return _value Value stored at the given key.\\n     */\\n    function _getGasMetadata(\\n        GasMetadataKey _key\\n    )\\n        internal\\n        returns (\\n            uint256 _value\\n        )\\n    {\\n        return uint256(_getContractStorage(\\n            GAS_METADATA_ADDRESS,\\n            bytes32(uint256(_key))\\n        ));\\n    }\\n\\n    /**\\n     * Sets the value of a gas metadata key.\\n     * @param _key Gas metadata key to set.\\n     * @param _value Value to store at the given key.\\n     */\\n    function _putGasMetadata(\\n        GasMetadataKey _key,\\n        uint256 _value\\n    )\\n        internal\\n    {\\n        _putContractStorage(\\n            GAS_METADATA_ADDRESS,\\n            bytes32(uint256(_key)),\\n            bytes32(uint256(_value))\\n        );\\n    }\\n\\n\\n    /*****************************************\\n     * Internal Functions: Execution Context *\\n     *****************************************/\\n\\n    /**\\n     * Swaps over to a new message context.\\n     * @param _prevMessageContext Context we're switching from.\\n     * @param _nextMessageContext Context we're switching to.\\n     */\\n    function _switchMessageContext(\\n        MessageContext memory _prevMessageContext,\\n        MessageContext memory _nextMessageContext\\n    )\\n        internal\\n    {\\n        // Avoid unnecessary the SSTORE.\\n        if (_prevMessageContext.ovmCALLER != _nextMessageContext.ovmCALLER) {\\n            messageContext.ovmCALLER = _nextMessageContext.ovmCALLER;\\n        }\\n\\n        // Avoid unnecessary the SSTORE.\\n        if (_prevMessageContext.ovmADDRESS != _nextMessageContext.ovmADDRESS) {\\n            messageContext.ovmADDRESS = _nextMessageContext.ovmADDRESS;\\n        }\\n\\n        // Avoid unnecessary the SSTORE.\\n        if (_prevMessageContext.isStatic != _nextMessageContext.isStatic) {\\n            messageContext.isStatic = _nextMessageContext.isStatic;\\n        }\\n    }\\n\\n    /**\\n     * Initializes the execution context.\\n     * @param _transaction OVM transaction being executed.\\n     */\\n    function _initContext(\\n        Lib_OVMCodec.Transaction memory _transaction\\n    )\\n        internal\\n    {\\n        transactionContext.ovmTIMESTAMP = _transaction.timestamp;\\n        transactionContext.ovmNUMBER = _transaction.blockNumber;\\n        transactionContext.ovmTXGASLIMIT = _transaction.gasLimit;\\n        transactionContext.ovmL1QUEUEORIGIN = _transaction.l1QueueOrigin;\\n        transactionContext.ovmL1TXORIGIN = _transaction.l1TxOrigin;\\n        transactionContext.ovmGASLIMIT = gasMeterConfig.maxGasPerQueuePerEpoch;\\n\\n        messageRecord.nuisanceGasLeft = _getNuisanceGasLimit(_transaction.gasLimit);\\n    }\\n\\n    /**\\n     * Resets the transaction and message context.\\n     */\\n    function _resetContext()\\n        internal\\n    {\\n        transactionContext.ovmL1TXORIGIN = DEFAULT_ADDRESS;\\n        transactionContext.ovmTIMESTAMP = DEFAULT_UINT256;\\n        transactionContext.ovmNUMBER = DEFAULT_UINT256;\\n        transactionContext.ovmGASLIMIT = DEFAULT_UINT256;\\n        transactionContext.ovmTXGASLIMIT = DEFAULT_UINT256;\\n        transactionContext.ovmL1QUEUEORIGIN = Lib_OVMCodec.QueueOrigin.SEQUENCER_QUEUE;\\n\\n        transactionRecord.ovmGasRefund = DEFAULT_UINT256;\\n\\n        messageContext.ovmCALLER = DEFAULT_ADDRESS;\\n        messageContext.ovmADDRESS = DEFAULT_ADDRESS;\\n        messageContext.isStatic = false;\\n\\n        messageRecord.nuisanceGasLeft = DEFAULT_UINT256;\\n\\n        // Reset the ovmStateManager.\\n        ovmStateManager = iOVM_StateManager(address(0));\\n    }\\n\\n    /*****************************\\n     * L2-only Helper Functions *\\n     *****************************/\\n\\n    /**\\n     * Unreachable helper function for simulating eth_calls with an OVM message context.\\n     * This function will throw an exception in all cases other than when used as a custom entrypoint in L2 Geth to simulate eth_call.\\n     * @param _transaction the message transaction to simulate.\\n     * @param _from the OVM account the simulated call should be from.\\n     */\\n    function simulateMessage(\\n        Lib_OVMCodec.Transaction memory _transaction,\\n        address _from,\\n        iOVM_StateManager _ovmStateManager\\n    )\\n        external\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        // Prevent this call from having any effect unless in a custom-set VM frame\\n        require(msg.sender == address(0));\\n\\n        ovmStateManager = _ovmStateManager;\\n        _initContext(_transaction);\\n        messageRecord.nuisanceGasLeft = uint(-1);\\n\\n        messageContext.ovmADDRESS = _from;\\n\\n        bool isCreate = _transaction.entrypoint == address(0);\\n        if (isCreate) {\\n            (address created, bytes memory revertData) = ovmCREATE(_transaction.data);\\n            if (created == address(0)) {\\n                return abi.encode(false, revertData);\\n            } else {\\n                // The eth_call RPC endpoint for to = undefined will return the deployed bytecode\\n                // in the success case, differing from standard create messages.\\n                return abi.encode(true, Lib_EthUtils.getCode(created));\\n            }\\n        } else {\\n            (bool success, bytes memory returndata) = ovmCALL(\\n                _transaction.gasLimit,\\n                _transaction.entrypoint,\\n                _transaction.data\\n            );\\n            return abi.encode(success, returndata);\\n        }\\n    }\\n}\\n\",\"keccak256\":\"0x2d8c32b3438f9b9da37e33430527e12658178bd96b0863e20bd02fcaaf162cd4\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/OVM/predeploys/OVM_DeployerWhitelist.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/* Interface Imports */\\nimport { iOVM_DeployerWhitelist } from \\\"../../iOVM/predeploys/iOVM_DeployerWhitelist.sol\\\";\\n\\n/**\\n * @title OVM_DeployerWhitelist\\n * @dev The Deployer Whitelist is a temporary predeploy used to provide additional safety during the\\n * initial phases of our mainnet roll out. It is owned by the Optimism team, and defines accounts\\n * which are allowed to deploy contracts on Layer2. The Execution Manager will only allow an\\n * ovmCREATE or ovmCREATE2 operation to proceed if the deployer's address whitelisted.\\n *\\n * Compiler used: optimistic-solc\\n * Runtime target: OVM\\n */\\ncontract OVM_DeployerWhitelist is iOVM_DeployerWhitelist {\\n\\n    /**********************\\n     * Contract Constants *\\n     **********************/\\n\\n    bool public initialized;\\n    bool public allowArbitraryDeployment;\\n    address override public owner;\\n    mapping (address => bool) public whitelist;\\n\\n\\n    /**********************\\n     * Function Modifiers *\\n     **********************/\\n\\n    /**\\n     * Blocks functions to anyone except the contract owner.\\n     */\\n    modifier onlyOwner() {\\n        require(\\n            msg.sender == owner,\\n            \\\"Function can only be called by the owner of this contract.\\\"\\n        );\\n        _;\\n    }\\n\\n\\n    /********************\\n     * Public Functions *\\n     ********************/\\n\\n    /**\\n     * Initializes the whitelist.\\n     * @param _owner Address of the owner for this contract.\\n     * @param _allowArbitraryDeployment Whether or not to allow arbitrary contract deployment.\\n     */\\n    function initialize(\\n        address _owner,\\n        bool _allowArbitraryDeployment\\n    )\\n        override\\n        external\\n    {\\n        if (initialized == true) {\\n            return;\\n        }\\n\\n        initialized = true;\\n        allowArbitraryDeployment = _allowArbitraryDeployment;\\n        owner = _owner;\\n    }\\n\\n    /**\\n     * Adds or removes an address from the deployment whitelist.\\n     * @param _deployer Address to update permissions for.\\n     * @param _isWhitelisted Whether or not the address is whitelisted.\\n     */\\n    function setWhitelistedDeployer(\\n        address _deployer,\\n        bool _isWhitelisted\\n    )\\n        override\\n        external\\n        onlyOwner\\n    {\\n        whitelist[_deployer] = _isWhitelisted;\\n    }\\n\\n    /**\\n     * Updates the owner of this contract.\\n     * @param _owner Address of the new owner.\\n     */\\n    function setOwner(\\n        address _owner\\n    )\\n        override\\n        public\\n        onlyOwner\\n    {\\n        owner = _owner;\\n    }\\n\\n    /**\\n     * Updates the arbitrary deployment flag.\\n     * @param _allowArbitraryDeployment Whether or not to allow arbitrary contract deployment.\\n     */\\n    function setAllowArbitraryDeployment(\\n        bool _allowArbitraryDeployment\\n    )\\n        override\\n        public\\n        onlyOwner\\n    {\\n        allowArbitraryDeployment = _allowArbitraryDeployment;\\n    }\\n\\n    /**\\n     * Permanently enables arbitrary contract deployment and deletes the owner.\\n     */\\n    function enableArbitraryContractDeployment()\\n        override\\n        external\\n        onlyOwner\\n    {\\n        setAllowArbitraryDeployment(true);\\n        setOwner(address(0));\\n    }\\n\\n    /**\\n     * Checks whether an address is allowed to deploy contracts.\\n     * @param _deployer Address to check.\\n     * @return _allowed Whether or not the address can deploy contracts.\\n     */\\n    function isDeployerAllowed(\\n        address _deployer\\n    )\\n        override\\n        external\\n        returns (\\n            bool\\n        )\\n    {\\n        return (\\n            initialized == false\\n            || allowArbitraryDeployment == true\\n            || whitelist[_deployer]\\n        );\\n    }\\n}\\n\",\"keccak256\":\"0xb96bfb8eb24503b05de41483cc9fb7a7f81107aa1ca146dc281952f8100848a0\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/iOVM/chain/iOVM_CanonicalTransactionChain.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\npragma experimental ABIEncoderV2;\\n\\n/* Library Imports */\\nimport { Lib_OVMCodec } from \\\"../../libraries/codec/Lib_OVMCodec.sol\\\";\\n\\n/* Interface Imports */\\nimport { iOVM_ChainStorageContainer } from \\\"./iOVM_ChainStorageContainer.sol\\\";\\n\\n/**\\n * @title iOVM_CanonicalTransactionChain\\n */\\ninterface iOVM_CanonicalTransactionChain {\\n\\n    /**********\\n     * Events *\\n     **********/\\n\\n    event TransactionEnqueued(\\n        address _l1TxOrigin,\\n        address _target,\\n        uint256 _gasLimit,\\n        bytes _data,\\n        uint256 _queueIndex,\\n        uint256 _timestamp\\n    );\\n\\n    event QueueBatchAppended(\\n        uint256 _startingQueueIndex,\\n        uint256 _numQueueElements,\\n        uint256 _totalElements\\n    );\\n\\n    event SequencerBatchAppended(\\n        uint256 _startingQueueIndex,\\n        uint256 _numQueueElements,\\n        uint256 _totalElements\\n    );\\n\\n    event TransactionBatchAppended(\\n        uint256 indexed _batchIndex,\\n        bytes32 _batchRoot,\\n        uint256 _batchSize,\\n        uint256 _prevTotalElements,\\n        bytes _extraData\\n    );\\n\\n\\n    /***********\\n     * Structs *\\n     ***********/\\n\\n    struct BatchContext {\\n        uint256 numSequencedTransactions;\\n        uint256 numSubsequentQueueTransactions;\\n        uint256 timestamp;\\n        uint256 blockNumber;\\n    }\\n\\n\\n    /********************\\n     * Public Functions *\\n     ********************/\\n\\n\\n    /**\\n     * Accesses the batch storage container.\\n     * @return Reference to the batch storage container.\\n     */\\n    function batches()\\n        external\\n        view\\n        returns (\\n            iOVM_ChainStorageContainer\\n        );\\n\\n    /**\\n     * Accesses the queue storage container.\\n     * @return Reference to the queue storage container.\\n     */\\n    function queue()\\n        external\\n        view\\n        returns (\\n            iOVM_ChainStorageContainer\\n        );\\n\\n    /**\\n     * Retrieves the total number of elements submitted.\\n     * @return _totalElements Total submitted elements.\\n     */\\n    function getTotalElements()\\n        external\\n        view\\n        returns (\\n            uint256 _totalElements\\n        );\\n\\n    /**\\n     * Retrieves the total number of batches submitted.\\n     * @return _totalBatches Total submitted batches.\\n     */\\n    function getTotalBatches()\\n        external\\n        view\\n        returns (\\n            uint256 _totalBatches\\n        );\\n\\n    /**\\n     * Returns the index of the next element to be enqueued.\\n     * @return Index for the next queue element.\\n     */\\n    function getNextQueueIndex()\\n        external\\n        view\\n        returns (\\n            uint40\\n        );\\n\\n    /**\\n     * Gets the queue element at a particular index.\\n     * @param _index Index of the queue element to access.\\n     * @return _element Queue element at the given index.\\n     */\\n    function getQueueElement(\\n        uint256 _index\\n    )\\n        external\\n        view\\n        returns (\\n            Lib_OVMCodec.QueueElement memory _element\\n        );\\n\\n    /**\\n     * Returns the timestamp of the last transaction.\\n     * @return Timestamp for the last transaction.\\n     */\\n    function getLastTimestamp()\\n        external\\n        view\\n        returns (\\n            uint40\\n        );\\n\\n    /**\\n     * Returns the blocknumber of the last transaction.\\n     * @return Blocknumber for the last transaction.\\n     */\\n    function getLastBlockNumber()\\n        external\\n        view\\n        returns (\\n            uint40\\n        );\\n\\n    /**\\n     * Get the number of queue elements which have not yet been included.\\n     * @return Number of pending queue elements.\\n     */\\n    function getNumPendingQueueElements()\\n        external\\n        view\\n        returns (\\n            uint40\\n        );\\n\\n    /**\\n     * Retrieves the length of the queue, including\\n     * both pending and canonical transactions.\\n     * @return Length of the queue.\\n     */\\n    function getQueueLength()\\n        external\\n        view\\n        returns (\\n            uint40\\n        );\\n\\n\\n    /**\\n     * Adds a transaction to the queue.\\n     * @param _target Target contract to send the transaction to.\\n     * @param _gasLimit Gas limit for the given transaction.\\n     * @param _data Transaction data.\\n     */\\n    function enqueue(\\n        address _target,\\n        uint256 _gasLimit,\\n        bytes memory _data\\n    )\\n        external;\\n\\n    /**\\n     * Appends a given number of queued transactions as a single batch.\\n     * @param _numQueuedTransactions Number of transactions to append.\\n     */\\n    function appendQueueBatch(\\n        uint256 _numQueuedTransactions\\n    )\\n        external;\\n\\n    /**\\n     * Allows the sequencer to append a batch of transactions.\\n     * @dev This function uses a custom encoding scheme for efficiency reasons.\\n     * .param _shouldStartAtElement Specific batch we expect to start appending to.\\n     * .param _totalElementsToAppend Total number of batch elements we expect to append.\\n     * .param _contexts Array of batch contexts.\\n     * .param _transactionDataFields Array of raw transaction data.\\n     */\\n    function appendSequencerBatch(\\n        // uint40 _shouldStartAtElement,\\n        // uint24 _totalElementsToAppend,\\n        // BatchContext[] _contexts,\\n        // bytes[] _transactionDataFields\\n    )\\n        external;\\n\\n    /**\\n     * Verifies whether a transaction is included in the chain.\\n     * @param _transaction Transaction to verify.\\n     * @param _txChainElement Transaction chain element corresponding to the transaction.\\n     * @param _batchHeader Header of the batch the transaction was included in.\\n     * @param _inclusionProof Inclusion proof for the provided transaction chain element.\\n     * @return True if the transaction exists in the CTC, false if not.\\n     */\\n    function verifyTransaction(\\n        Lib_OVMCodec.Transaction memory _transaction,\\n        Lib_OVMCodec.TransactionChainElement memory _txChainElement,\\n        Lib_OVMCodec.ChainBatchHeader memory _batchHeader,\\n        Lib_OVMCodec.ChainInclusionProof memory _inclusionProof\\n    )\\n        external\\n        view\\n        returns (\\n            bool\\n        );\\n}\\n\",\"keccak256\":\"0xb5e55488a1982841c07cdf5ff475da4789596f111dd48f01b1918ee4c775cf3a\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/iOVM/chain/iOVM_ChainStorageContainer.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/**\\n * @title iOVM_ChainStorageContainer\\n */\\ninterface iOVM_ChainStorageContainer {\\n\\n    /********************\\n     * Public Functions *\\n     ********************/\\n\\n    /**\\n     * Sets the container's global metadata field. We're using `bytes27` here because we use five\\n     * bytes to maintain the length of the underlying data structure, meaning we have an extra\\n     * 27 bytes to store arbitrary data.\\n     * @param _globalMetadata New global metadata to set.\\n     */\\n    function setGlobalMetadata(\\n        bytes27 _globalMetadata\\n    )\\n        external;\\n\\n    /**\\n     * Retrieves the container's global metadata field.\\n     * @return Container global metadata field.\\n     */\\n    function getGlobalMetadata()\\n        external\\n        view\\n        returns (\\n            bytes27\\n        );\\n\\n    /**\\n     * Retrieves the number of objects stored in the container.\\n     * @return Number of objects in the container.\\n     */\\n    function length()\\n        external\\n        view\\n        returns (\\n            uint256\\n        );\\n\\n    /**\\n     * Pushes an object into the container.\\n     * @param _object A 32 byte value to insert into the container.\\n     */\\n    function push(\\n        bytes32 _object\\n    )\\n        external;\\n\\n    /**\\n     * Pushes an object into the container. Function allows setting the global metadata since\\n     * we'll need to touch the \\\"length\\\" storage slot anyway, which also contains the global\\n     * metadata (it's an optimization).\\n     * @param _object A 32 byte value to insert into the container.\\n     * @param _globalMetadata New global metadata for the container.\\n     */\\n    function push(\\n        bytes32 _object,\\n        bytes27 _globalMetadata\\n    )\\n        external;\\n\\n    /**\\n     * Retrieves an object from the container.\\n     * @param _index Index of the particular object to access.\\n     * @return 32 byte object value.\\n     */\\n    function get(\\n        uint256 _index\\n    )\\n        external\\n        view\\n        returns (\\n            bytes32\\n        );\\n\\n    /**\\n     * Removes all objects after and including a given index.\\n     * @param _index Object index to delete from.\\n     */\\n    function deleteElementsAfterInclusive(\\n        uint256 _index\\n    )\\n        external;\\n\\n    /**\\n     * Removes all objects after and including a given index. Also allows setting the global\\n     * metadata field.\\n     * @param _index Object index to delete from.\\n     * @param _globalMetadata New global metadata for the container.\\n     */\\n    function deleteElementsAfterInclusive(\\n        uint256 _index,\\n        bytes27 _globalMetadata\\n    )\\n        external;\\n\\n    /**\\n     * Marks an index as overwritable, meaing the underlying buffer can start to write values over\\n     * any objects before and including the given index.\\n     */\\n    function setNextOverwritableIndex(\\n        uint256 _index\\n    )\\n        external;\\n}\\n\",\"keccak256\":\"0x2d7973a0ad84c23ec62624d3f1e3aeb198cc72686ff1e6cfa17155556b320c94\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/iOVM/execution/iOVM_ExecutionManager.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\npragma experimental ABIEncoderV2;\\n\\n/* Library Imports */\\nimport { Lib_OVMCodec } from \\\"../../libraries/codec/Lib_OVMCodec.sol\\\";\\n\\ninterface iOVM_ExecutionManager {\\n    /**********\\n     * Enums *\\n     *********/\\n\\n    enum RevertFlag {\\n        OUT_OF_GAS,\\n        INTENTIONAL_REVERT,\\n        EXCEEDS_NUISANCE_GAS,\\n        INVALID_STATE_ACCESS,\\n        UNSAFE_BYTECODE,\\n        CREATE_COLLISION,\\n        STATIC_VIOLATION,\\n        CREATOR_NOT_ALLOWED\\n    }\\n\\n    enum GasMetadataKey {\\n        CURRENT_EPOCH_START_TIMESTAMP,\\n        CUMULATIVE_SEQUENCER_QUEUE_GAS,\\n        CUMULATIVE_L1TOL2_QUEUE_GAS,\\n        PREV_EPOCH_SEQUENCER_QUEUE_GAS,\\n        PREV_EPOCH_L1TOL2_QUEUE_GAS\\n    }\\n\\n    /***********\\n     * Structs *\\n     ***********/\\n\\n    struct GasMeterConfig {\\n        uint256 minTransactionGasLimit;\\n        uint256 maxTransactionGasLimit;\\n        uint256 maxGasPerQueuePerEpoch;\\n        uint256 secondsPerEpoch;\\n    }\\n\\n    struct GlobalContext {\\n        uint256 ovmCHAINID;\\n    }\\n\\n    struct TransactionContext {\\n        Lib_OVMCodec.QueueOrigin ovmL1QUEUEORIGIN;\\n        uint256 ovmTIMESTAMP;\\n        uint256 ovmNUMBER;\\n        uint256 ovmGASLIMIT;\\n        uint256 ovmTXGASLIMIT;\\n        address ovmL1TXORIGIN;\\n    }\\n\\n    struct TransactionRecord {\\n        uint256 ovmGasRefund;\\n    }\\n\\n    struct MessageContext {\\n        address ovmCALLER;\\n        address ovmADDRESS;\\n        bool isStatic;\\n    }\\n\\n    struct MessageRecord {\\n        uint256 nuisanceGasLeft;\\n    }\\n\\n\\n    /************************************\\n     * Transaction Execution Entrypoint *\\n     ************************************/\\n\\n    function run(\\n        Lib_OVMCodec.Transaction calldata _transaction,\\n        address _txStateManager\\n    ) external returns (bytes memory);\\n\\n\\n    /*******************\\n     * Context Opcodes *\\n     *******************/\\n\\n    function ovmCALLER() external view returns (address _caller);\\n    function ovmADDRESS() external view returns (address _address);\\n    function ovmTIMESTAMP() external view returns (uint256 _timestamp);\\n    function ovmNUMBER() external view returns (uint256 _number);\\n    function ovmGASLIMIT() external view returns (uint256 _gasLimit);\\n    function ovmCHAINID() external view returns (uint256 _chainId);\\n\\n\\n    /**********************\\n     * L2 Context Opcodes *\\n     **********************/\\n\\n    function ovmL1QUEUEORIGIN() external view returns (Lib_OVMCodec.QueueOrigin _queueOrigin);\\n    function ovmL1TXORIGIN() external view returns (address _l1TxOrigin);\\n\\n\\n    /*******************\\n     * Halting Opcodes *\\n     *******************/\\n\\n    function ovmREVERT(bytes memory _data) external;\\n\\n\\n    /*****************************\\n     * Contract Creation Opcodes *\\n     *****************************/\\n\\n    function ovmCREATE(bytes memory _bytecode) external returns (address _contract, bytes memory _revertdata);\\n    function ovmCREATE2(bytes memory _bytecode, bytes32 _salt) external returns (address _contract, bytes memory _revertdata);\\n\\n\\n    /*******************************\\n     * Account Abstraction Opcodes *\\n     ******************************/\\n\\n    function ovmGETNONCE() external returns (uint256 _nonce);\\n    function ovmINCREMENTNONCE() external;\\n    function ovmCREATEEOA(bytes32 _messageHash, uint8 _v, bytes32 _r, bytes32 _s) external;\\n\\n\\n    /****************************\\n     * Contract Calling Opcodes *\\n     ****************************/\\n\\n    function ovmCALL(uint256 _gasLimit, address _address, bytes memory _calldata) external returns (bool _success, bytes memory _returndata);\\n    function ovmSTATICCALL(uint256 _gasLimit, address _address, bytes memory _calldata) external returns (bool _success, bytes memory _returndata);\\n    function ovmDELEGATECALL(uint256 _gasLimit, address _address, bytes memory _calldata) external returns (bool _success, bytes memory _returndata);\\n\\n\\n    /****************************\\n     * Contract Storage Opcodes *\\n     ****************************/\\n\\n    function ovmSLOAD(bytes32 _key) external returns (bytes32 _value);\\n    function ovmSSTORE(bytes32 _key, bytes32 _value) external;\\n\\n\\n    /*************************\\n     * Contract Code Opcodes *\\n     *************************/\\n\\n    function ovmEXTCODECOPY(address _contract, uint256 _offset, uint256 _length) external returns (bytes memory _code);\\n    function ovmEXTCODESIZE(address _contract) external returns (uint256 _size);\\n    function ovmEXTCODEHASH(address _contract) external returns (bytes32 _hash);\\n\\n\\n    /***************************************\\n     * Public Functions: Execution Context *\\n     ***************************************/\\n\\n    function getMaxTransactionGasLimit() external view returns (uint _maxTransactionGasLimit);\\n}\\n\",\"keccak256\":\"0xf023d5d6fc6a03bd52f7a57af6e21076de77e8925d065bb79db062e73e43b684\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/iOVM/execution/iOVM_SafetyChecker.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/**\\n * @title iOVM_SafetyChecker\\n */\\ninterface iOVM_SafetyChecker {\\n\\n    /********************\\n     * Public Functions *\\n     ********************/\\n\\n    function isBytecodeSafe(bytes calldata _bytecode) external pure returns (bool);\\n}\\n\",\"keccak256\":\"0xde6639676d4ec4f77297652d5ede2429bc93e74e11fefd9e9de4bc92dd784878\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/iOVM/execution/iOVM_StateManager.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\npragma experimental ABIEncoderV2;\\n\\n/* Library Imports */\\nimport { Lib_OVMCodec } from \\\"../../libraries/codec/Lib_OVMCodec.sol\\\";\\n\\n/**\\n * @title iOVM_StateManager\\n */\\ninterface iOVM_StateManager {\\n\\n    /*******************\\n     * Data Structures *\\n     *******************/\\n\\n    enum ItemState {\\n        ITEM_UNTOUCHED,\\n        ITEM_LOADED,\\n        ITEM_CHANGED,\\n        ITEM_COMMITTED\\n    }\\n\\n    /***************************\\n     * Public Functions: Misc *\\n     ***************************/\\n\\n    function isAuthenticated(address _address) external view returns (bool);\\n\\n    /***************************\\n     * Public Functions: Setup *\\n     ***************************/\\n\\n    function owner() external view returns (address _owner);\\n    function ovmExecutionManager() external view returns (address _ovmExecutionManager);\\n    function setExecutionManager(address _ovmExecutionManager) external;\\n\\n\\n    /************************************\\n     * Public Functions: Account Access *\\n     ************************************/\\n\\n    function putAccount(address _address, Lib_OVMCodec.Account memory _account) external;\\n    function putEmptyAccount(address _address) external;\\n    function getAccount(address _address) external view returns (Lib_OVMCodec.Account memory _account);\\n    function hasAccount(address _address) external view returns (bool _exists);\\n    function hasEmptyAccount(address _address) external view returns (bool _exists);\\n    function setAccountNonce(address _address, uint256 _nonce) external;\\n    function getAccountNonce(address _address) external view returns (uint256 _nonce);\\n    function getAccountEthAddress(address _address) external view returns (address _ethAddress);\\n    function getAccountStorageRoot(address _address) external view returns (bytes32 _storageRoot);\\n    function initPendingAccount(address _address) external;\\n    function commitPendingAccount(address _address, address _ethAddress, bytes32 _codeHash) external;\\n    function testAndSetAccountLoaded(address _address) external returns (bool _wasAccountAlreadyLoaded);\\n    function testAndSetAccountChanged(address _address) external returns (bool _wasAccountAlreadyChanged);\\n    function commitAccount(address _address) external returns (bool _wasAccountCommitted);\\n    function incrementTotalUncommittedAccounts() external;\\n    function getTotalUncommittedAccounts() external view returns (uint256 _total);\\n    function wasAccountChanged(address _address) external view returns (bool);\\n    function wasAccountCommitted(address _address) external view returns (bool);\\n\\n\\n    /************************************\\n     * Public Functions: Storage Access *\\n     ************************************/\\n\\n    function putContractStorage(address _contract, bytes32 _key, bytes32 _value) external;\\n    function getContractStorage(address _contract, bytes32 _key) external view returns (bytes32 _value);\\n    function hasContractStorage(address _contract, bytes32 _key) external view returns (bool _exists);\\n    function testAndSetContractStorageLoaded(address _contract, bytes32 _key) external returns (bool _wasContractStorageAlreadyLoaded);\\n    function testAndSetContractStorageChanged(address _contract, bytes32 _key) external returns (bool _wasContractStorageAlreadyChanged);\\n    function commitContractStorage(address _contract, bytes32 _key) external returns (bool _wasContractStorageCommitted);\\n    function incrementTotalUncommittedContractStorage() external;\\n    function getTotalUncommittedContractStorage() external view returns (uint256 _total);\\n    function wasContractStorageChanged(address _contract, bytes32 _key) external view returns (bool);\\n    function wasContractStorageCommitted(address _contract, bytes32 _key) external view returns (bool);\\n}\\n\",\"keccak256\":\"0x7a11dbd1f61593ba34debe07e39eef59967307f7f372ba9855bee0953585d08d\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/iOVM/predeploys/iOVM_DeployerWhitelist.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/**\\n * @title iOVM_DeployerWhitelist\\n */\\ninterface iOVM_DeployerWhitelist {\\n\\n    /********************\\n     * Public Functions *\\n     ********************/\\n\\n    function initialize(address _owner, bool _allowArbitraryDeployment) external;\\n    function owner() external returns (address _owner);\\n    function setWhitelistedDeployer(address _deployer, bool _isWhitelisted) external;\\n    function setOwner(address _newOwner) external;\\n    function setAllowArbitraryDeployment(bool _allowArbitraryDeployment) external;\\n    function enableArbitraryContractDeployment() external;\\n    function isDeployerAllowed(address _deployer) external returns (bool _allowed);\\n}\\n\",\"keccak256\":\"0xdf1f27faf0d26d416bf6d408d146a16de32b4e1772a292c65d39eb7ec2b53ceb\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/codec/Lib_OVMCodec.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\npragma experimental ABIEncoderV2;\\n\\n/* Library Imports */\\nimport { Lib_RLPReader } from \\\"../rlp/Lib_RLPReader.sol\\\";\\nimport { Lib_RLPWriter } from \\\"../rlp/Lib_RLPWriter.sol\\\";\\nimport { Lib_BytesUtils } from \\\"../utils/Lib_BytesUtils.sol\\\";\\nimport { Lib_Bytes32Utils } from \\\"../utils/Lib_Bytes32Utils.sol\\\";\\n\\n/**\\n * @title Lib_OVMCodec\\n */\\nlibrary Lib_OVMCodec {\\n\\n    /*********\\n     * Enums *\\n     *********/\\n\\n    enum QueueOrigin {\\n        SEQUENCER_QUEUE,\\n        L1TOL2_QUEUE\\n    }\\n\\n\\n    /***********\\n     * Structs *\\n     ***********/\\n\\n    struct Account {\\n        uint256 nonce;\\n        uint256 balance;\\n        bytes32 storageRoot;\\n        bytes32 codeHash;\\n        address ethAddress;\\n        bool isFresh;\\n    }\\n\\n    struct EVMAccount {\\n        uint256 nonce;\\n        uint256 balance;\\n        bytes32 storageRoot;\\n        bytes32 codeHash;\\n    }\\n\\n    struct ChainBatchHeader {\\n        uint256 batchIndex;\\n        bytes32 batchRoot;\\n        uint256 batchSize;\\n        uint256 prevTotalElements;\\n        bytes extraData;\\n    }\\n\\n    struct ChainInclusionProof {\\n        uint256 index;\\n        bytes32[] siblings;\\n    }\\n\\n    struct Transaction {\\n        uint256 timestamp;\\n        uint256 blockNumber;\\n        QueueOrigin l1QueueOrigin;\\n        address l1TxOrigin;\\n        address entrypoint;\\n        uint256 gasLimit;\\n        bytes data;\\n    }\\n\\n    struct TransactionChainElement {\\n        bool isSequenced;\\n        uint256 queueIndex;  // QUEUED TX ONLY\\n        uint256 timestamp;   // SEQUENCER TX ONLY\\n        uint256 blockNumber; // SEQUENCER TX ONLY\\n        bytes txData;        // SEQUENCER TX ONLY\\n    }\\n\\n    struct QueueElement {\\n        bytes32 transactionHash;\\n        uint40 timestamp;\\n        uint40 blockNumber;\\n    }\\n\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    /**\\n     * Encodes a standard OVM transaction.\\n     * @param _transaction OVM transaction to encode.\\n     * @return Encoded transaction bytes.\\n     */\\n    function encodeTransaction(\\n        Transaction memory _transaction\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        return abi.encodePacked(\\n            _transaction.timestamp,\\n            _transaction.blockNumber,\\n            _transaction.l1QueueOrigin,\\n            _transaction.l1TxOrigin,\\n            _transaction.entrypoint,\\n            _transaction.gasLimit,\\n            _transaction.data\\n        );\\n    }\\n\\n    /**\\n     * Hashes a standard OVM transaction.\\n     * @param _transaction OVM transaction to encode.\\n     * @return Hashed transaction\\n     */\\n    function hashTransaction(\\n        Transaction memory _transaction\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        return keccak256(encodeTransaction(_transaction));\\n    }\\n\\n    /**\\n     * Converts an OVM account to an EVM account.\\n     * @param _in OVM account to convert.\\n     * @return Converted EVM account.\\n     */\\n    function toEVMAccount(\\n        Account memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            EVMAccount memory\\n        )\\n    {\\n        return EVMAccount({\\n            nonce: _in.nonce,\\n            balance: _in.balance,\\n            storageRoot: _in.storageRoot,\\n            codeHash: _in.codeHash\\n        });\\n    }\\n\\n    /**\\n     * @notice RLP-encodes an account state struct.\\n     * @param _account Account state struct.\\n     * @return RLP-encoded account state.\\n     */\\n    function encodeEVMAccount(\\n        EVMAccount memory _account\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes[] memory raw = new bytes[](4);\\n\\n        // Unfortunately we can't create this array outright because\\n        // Lib_RLPWriter.writeList will reject fixed-size arrays. Assigning\\n        // index-by-index circumvents this issue.\\n        raw[0] = Lib_RLPWriter.writeBytes(\\n            Lib_Bytes32Utils.removeLeadingZeros(\\n                bytes32(_account.nonce)\\n            )\\n        );\\n        raw[1] = Lib_RLPWriter.writeBytes(\\n            Lib_Bytes32Utils.removeLeadingZeros(\\n                bytes32(_account.balance)\\n            )\\n        );\\n        raw[2] = Lib_RLPWriter.writeBytes(abi.encodePacked(_account.storageRoot));\\n        raw[3] = Lib_RLPWriter.writeBytes(abi.encodePacked(_account.codeHash));\\n\\n        return Lib_RLPWriter.writeList(raw);\\n    }\\n\\n    /**\\n     * @notice Decodes an RLP-encoded account state into a useful struct.\\n     * @param _encoded RLP-encoded account state.\\n     * @return Account state struct.\\n     */\\n    function decodeEVMAccount(\\n        bytes memory _encoded\\n    )\\n        internal\\n        pure\\n        returns (\\n            EVMAccount memory\\n        )\\n    {\\n        Lib_RLPReader.RLPItem[] memory accountState = Lib_RLPReader.readList(_encoded);\\n\\n        return EVMAccount({\\n            nonce: Lib_RLPReader.readUint256(accountState[0]),\\n            balance: Lib_RLPReader.readUint256(accountState[1]),\\n            storageRoot: Lib_RLPReader.readBytes32(accountState[2]),\\n            codeHash: Lib_RLPReader.readBytes32(accountState[3])\\n        });\\n    }\\n\\n    /**\\n     * Calculates a hash for a given batch header.\\n     * @param _batchHeader Header to hash.\\n     * @return Hash of the header.\\n     */\\n    function hashBatchHeader(\\n        Lib_OVMCodec.ChainBatchHeader memory _batchHeader\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        return keccak256(\\n            abi.encode(\\n                _batchHeader.batchRoot,\\n                _batchHeader.batchSize,\\n                _batchHeader.prevTotalElements,\\n                _batchHeader.extraData\\n            )\\n        );\\n    }\\n}\\n\",\"keccak256\":\"0xd85ba2066057a2677926f484b938c7c2ef33ff3853f3b71cda252f4a54f30e05\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/resolver/Lib_AddressManager.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/* External Imports */\\nimport { Ownable } from \\\"@openzeppelin/contracts/access/Ownable.sol\\\";\\n\\n/**\\n * @title Lib_AddressManager\\n */\\ncontract Lib_AddressManager is Ownable {\\n\\n    /**********\\n     * Events *\\n     **********/\\n\\n    event AddressSet(\\n        string _name,\\n        address _newAddress\\n    );\\n\\n\\n    /*************\\n     * Variables *\\n     *************/\\n\\n    mapping (bytes32 => address) private addresses;\\n\\n\\n    /********************\\n     * Public Functions *\\n     ********************/\\n\\n    /**\\n     * Changes the address associated with a particular name.\\n     * @param _name String name to associate an address with.\\n     * @param _address Address to associate with the name.\\n     */\\n    function setAddress(\\n        string memory _name,\\n        address _address\\n    )\\n        external\\n        onlyOwner\\n    {\\n        addresses[_getNameHash(_name)] = _address;\\n\\n        emit AddressSet(\\n            _name,\\n            _address\\n        );\\n    }\\n\\n    /**\\n     * Retrieves the address associated with a given name.\\n     * @param _name Name to retrieve an address for.\\n     * @return Address associated with the given name.\\n     */\\n    function getAddress(\\n        string memory _name\\n    )\\n        external\\n        view\\n        returns (\\n            address\\n        )\\n    {\\n        return addresses[_getNameHash(_name)];\\n    }\\n\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    /**\\n     * Computes the hash of a name.\\n     * @param _name Name to compute a hash for.\\n     * @return Hash of the given name.\\n     */\\n    function _getNameHash(\\n        string memory _name\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        return keccak256(abi.encodePacked(_name));\\n    }\\n}\\n\",\"keccak256\":\"0xcc9fc5c64f1101a5c6c397594086b1608189a9edc5c9635e1ac38f70aeeeecbf\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/resolver/Lib_AddressResolver.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/* Library Imports */\\nimport { Lib_AddressManager } from \\\"./Lib_AddressManager.sol\\\";\\n\\n/**\\n * @title Lib_AddressResolver\\n */\\nabstract contract Lib_AddressResolver {\\n\\n    /*************\\n     * Variables *\\n     *************/\\n\\n    Lib_AddressManager public libAddressManager;\\n\\n\\n    /***************\\n     * Constructor *\\n     ***************/\\n\\n    /**\\n     * @param _libAddressManager Address of the Lib_AddressManager.\\n     */\\n    constructor(\\n        address _libAddressManager\\n    ) {\\n        libAddressManager = Lib_AddressManager(_libAddressManager);\\n    }\\n\\n\\n    /********************\\n     * Public Functions *\\n     ********************/\\n\\n    /**\\n     * Resolves the address associated with a given name.\\n     * @param _name Name to resolve an address for.\\n     * @return Address associated with the given name.\\n     */\\n    function resolve(\\n        string memory _name\\n    )\\n        public\\n        view\\n        returns (\\n            address\\n        )\\n    {\\n        return libAddressManager.getAddress(_name);\\n    }\\n}\\n\",\"keccak256\":\"0x65981feeabff6a81783ea97d44baf988a18a86c8cb374c46fdb71819cbacc7c0\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/rlp/Lib_RLPReader.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/**\\n * @title Lib_RLPReader\\n * @dev Adapted from \\\"RLPReader\\\" by Hamdi Allam (hamdi.allam97@gmail.com).\\n */\\nlibrary Lib_RLPReader {\\n\\n    /*************\\n     * Constants *\\n     *************/\\n\\n    uint256 constant internal MAX_LIST_LENGTH = 32;\\n\\n\\n    /*********\\n     * Enums *\\n     *********/\\n\\n    enum RLPItemType {\\n        DATA_ITEM,\\n        LIST_ITEM\\n    }\\n\\n\\n    /***********\\n     * Structs *\\n     ***********/\\n\\n    struct RLPItem {\\n        uint256 length;\\n        uint256 ptr;\\n    }\\n\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    /**\\n     * Converts bytes to a reference to memory position and length.\\n     * @param _in Input bytes to convert.\\n     * @return Output memory reference.\\n     */\\n    function toRLPItem(\\n        bytes memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            RLPItem memory\\n        )\\n    {\\n        uint256 ptr;\\n        assembly {\\n            ptr := add(_in, 32)\\n        }\\n\\n        return RLPItem({\\n            length: _in.length,\\n            ptr: ptr\\n        });\\n    }\\n\\n    /**\\n     * Reads an RLP list value into a list of RLP items.\\n     * @param _in RLP list value.\\n     * @return Decoded RLP list items.\\n     */\\n    function readList(\\n        RLPItem memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            RLPItem[] memory\\n        )\\n    {\\n        (\\n            uint256 listOffset,\\n            ,\\n            RLPItemType itemType\\n        ) = _decodeLength(_in);\\n\\n        require(\\n            itemType == RLPItemType.LIST_ITEM,\\n            \\\"Invalid RLP list value.\\\"\\n        );\\n\\n        // Solidity in-memory arrays can't be increased in size, but *can* be decreased in size by\\n        // writing to the length. Since we can't know the number of RLP items without looping over\\n        // the entire input, we'd have to loop twice to accurately size this array. It's easier to\\n        // simply set a reasonable maximum list length and decrease the size before we finish.\\n        RLPItem[] memory out = new RLPItem[](MAX_LIST_LENGTH);\\n\\n        uint256 itemCount = 0;\\n        uint256 offset = listOffset;\\n        while (offset < _in.length) {\\n            require(\\n                itemCount < MAX_LIST_LENGTH,\\n                \\\"Provided RLP list exceeds max list length.\\\"\\n            );\\n\\n            (\\n                uint256 itemOffset,\\n                uint256 itemLength,\\n            ) = _decodeLength(RLPItem({\\n                length: _in.length - offset,\\n                ptr: _in.ptr + offset\\n            }));\\n\\n            out[itemCount] = RLPItem({\\n                length: itemLength + itemOffset,\\n                ptr: _in.ptr + offset\\n            });\\n\\n            itemCount += 1;\\n            offset += itemOffset + itemLength;\\n        }\\n\\n        // Decrease the array size to match the actual item count.\\n        assembly {\\n            mstore(out, itemCount)\\n        }\\n\\n        return out;\\n    }\\n\\n    /**\\n     * Reads an RLP list value into a list of RLP items.\\n     * @param _in RLP list value.\\n     * @return Decoded RLP list items.\\n     */\\n    function readList(\\n        bytes memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            RLPItem[] memory\\n        )\\n    {\\n        return readList(\\n            toRLPItem(_in)\\n        );\\n    }\\n\\n    /**\\n     * Reads an RLP bytes value into bytes.\\n     * @param _in RLP bytes value.\\n     * @return Decoded bytes.\\n     */\\n    function readBytes(\\n        RLPItem memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        (\\n            uint256 itemOffset,\\n            uint256 itemLength,\\n            RLPItemType itemType\\n        ) = _decodeLength(_in);\\n\\n        require(\\n            itemType == RLPItemType.DATA_ITEM,\\n            \\\"Invalid RLP bytes value.\\\"\\n        );\\n\\n        return _copy(_in.ptr, itemOffset, itemLength);\\n    }\\n\\n    /**\\n     * Reads an RLP bytes value into bytes.\\n     * @param _in RLP bytes value.\\n     * @return Decoded bytes.\\n     */\\n    function readBytes(\\n        bytes memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        return readBytes(\\n            toRLPItem(_in)\\n        );\\n    }\\n\\n    /**\\n     * Reads an RLP string value into a string.\\n     * @param _in RLP string value.\\n     * @return Decoded string.\\n     */\\n    function readString(\\n        RLPItem memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            string memory\\n        )\\n    {\\n        return string(readBytes(_in));\\n    }\\n\\n    /**\\n     * Reads an RLP string value into a string.\\n     * @param _in RLP string value.\\n     * @return Decoded string.\\n     */\\n    function readString(\\n        bytes memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            string memory\\n        )\\n    {\\n        return readString(\\n            toRLPItem(_in)\\n        );\\n    }\\n\\n    /**\\n     * Reads an RLP bytes32 value into a bytes32.\\n     * @param _in RLP bytes32 value.\\n     * @return Decoded bytes32.\\n     */\\n    function readBytes32(\\n        RLPItem memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        require(\\n            _in.length <= 33,\\n            \\\"Invalid RLP bytes32 value.\\\"\\n        );\\n\\n        (\\n            uint256 itemOffset,\\n            uint256 itemLength,\\n            RLPItemType itemType\\n        ) = _decodeLength(_in);\\n\\n        require(\\n            itemType == RLPItemType.DATA_ITEM,\\n            \\\"Invalid RLP bytes32 value.\\\"\\n        );\\n\\n        uint256 ptr = _in.ptr + itemOffset;\\n        bytes32 out;\\n        assembly {\\n            out := mload(ptr)\\n\\n            // Shift the bytes over to match the item size.\\n            if lt(itemLength, 32) {\\n                out := div(out, exp(256, sub(32, itemLength)))\\n            }\\n        }\\n\\n        return out;\\n    }\\n\\n    /**\\n     * Reads an RLP bytes32 value into a bytes32.\\n     * @param _in RLP bytes32 value.\\n     * @return Decoded bytes32.\\n     */\\n    function readBytes32(\\n        bytes memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        return readBytes32(\\n            toRLPItem(_in)\\n        );\\n    }\\n\\n    /**\\n     * Reads an RLP uint256 value into a uint256.\\n     * @param _in RLP uint256 value.\\n     * @return Decoded uint256.\\n     */\\n    function readUint256(\\n        RLPItem memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            uint256\\n        )\\n    {\\n        return uint256(readBytes32(_in));\\n    }\\n\\n    /**\\n     * Reads an RLP uint256 value into a uint256.\\n     * @param _in RLP uint256 value.\\n     * @return Decoded uint256.\\n     */\\n    function readUint256(\\n        bytes memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            uint256\\n        )\\n    {\\n        return readUint256(\\n            toRLPItem(_in)\\n        );\\n    }\\n\\n    /**\\n     * Reads an RLP bool value into a bool.\\n     * @param _in RLP bool value.\\n     * @return Decoded bool.\\n     */\\n    function readBool(\\n        RLPItem memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bool\\n        )\\n    {\\n        require(\\n            _in.length == 1,\\n            \\\"Invalid RLP boolean value.\\\"\\n        );\\n\\n        uint256 ptr = _in.ptr;\\n        uint256 out;\\n        assembly {\\n            out := byte(0, mload(ptr))\\n        }\\n\\n        require(\\n            out == 0 || out == 1,\\n            \\\"Lib_RLPReader: Invalid RLP boolean value, must be 0 or 1\\\"\\n        );\\n\\n        return out != 0;\\n    }\\n\\n    /**\\n     * Reads an RLP bool value into a bool.\\n     * @param _in RLP bool value.\\n     * @return Decoded bool.\\n     */\\n    function readBool(\\n        bytes memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bool\\n        )\\n    {\\n        return readBool(\\n            toRLPItem(_in)\\n        );\\n    }\\n\\n    /**\\n     * Reads an RLP address value into a address.\\n     * @param _in RLP address value.\\n     * @return Decoded address.\\n     */\\n    function readAddress(\\n        RLPItem memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            address\\n        )\\n    {\\n        if (_in.length == 1) {\\n            return address(0);\\n        }\\n\\n        require(\\n            _in.length == 21,\\n            \\\"Invalid RLP address value.\\\"\\n        );\\n\\n        return address(readUint256(_in));\\n    }\\n\\n    /**\\n     * Reads an RLP address value into a address.\\n     * @param _in RLP address value.\\n     * @return Decoded address.\\n     */\\n    function readAddress(\\n        bytes memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            address\\n        )\\n    {\\n        return readAddress(\\n            toRLPItem(_in)\\n        );\\n    }\\n\\n    /**\\n     * Reads the raw bytes of an RLP item.\\n     * @param _in RLP item to read.\\n     * @return Raw RLP bytes.\\n     */\\n    function readRawBytes(\\n        RLPItem memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        return _copy(_in);\\n    }\\n\\n\\n    /*********************\\n     * Private Functions *\\n     *********************/\\n\\n    /**\\n     * Decodes the length of an RLP item.\\n     * @param _in RLP item to decode.\\n     * @return Offset of the encoded data.\\n     * @return Length of the encoded data.\\n     * @return RLP item type (LIST_ITEM or DATA_ITEM).\\n     */\\n    function _decodeLength(\\n        RLPItem memory _in\\n    )\\n        private\\n        pure\\n        returns (\\n            uint256,\\n            uint256,\\n            RLPItemType\\n        )\\n    {\\n        require(\\n            _in.length > 0,\\n            \\\"RLP item cannot be null.\\\"\\n        );\\n\\n        uint256 ptr = _in.ptr;\\n        uint256 prefix;\\n        assembly {\\n            prefix := byte(0, mload(ptr))\\n        }\\n\\n        if (prefix <= 0x7f) {\\n            // Single byte.\\n\\n            return (0, 1, RLPItemType.DATA_ITEM);\\n        } else if (prefix <= 0xb7) {\\n            // Short string.\\n\\n            uint256 strLen = prefix - 0x80;\\n\\n            require(\\n                _in.length > strLen,\\n                \\\"Invalid RLP short string.\\\"\\n            );\\n\\n            return (1, strLen, RLPItemType.DATA_ITEM);\\n        } else if (prefix <= 0xbf) {\\n            // Long string.\\n            uint256 lenOfStrLen = prefix - 0xb7;\\n\\n            require(\\n                _in.length > lenOfStrLen,\\n                \\\"Invalid RLP long string length.\\\"\\n            );\\n\\n            uint256 strLen;\\n            assembly {\\n                // Pick out the string length.\\n                strLen := div(\\n                    mload(add(ptr, 1)),\\n                    exp(256, sub(32, lenOfStrLen))\\n                )\\n            }\\n\\n            require(\\n                _in.length > lenOfStrLen + strLen,\\n                \\\"Invalid RLP long string.\\\"\\n            );\\n\\n            return (1 + lenOfStrLen, strLen, RLPItemType.DATA_ITEM);\\n        } else if (prefix <= 0xf7) {\\n            // Short list.\\n            uint256 listLen = prefix - 0xc0;\\n\\n            require(\\n                _in.length > listLen,\\n                \\\"Invalid RLP short list.\\\"\\n            );\\n\\n            return (1, listLen, RLPItemType.LIST_ITEM);\\n        } else {\\n            // Long list.\\n            uint256 lenOfListLen = prefix - 0xf7;\\n\\n            require(\\n                _in.length > lenOfListLen,\\n                \\\"Invalid RLP long list length.\\\"\\n            );\\n\\n            uint256 listLen;\\n            assembly {\\n                // Pick out the list length.\\n                listLen := div(\\n                    mload(add(ptr, 1)),\\n                    exp(256, sub(32, lenOfListLen))\\n                )\\n            }\\n\\n            require(\\n                _in.length > lenOfListLen + listLen,\\n                \\\"Invalid RLP long list.\\\"\\n            );\\n\\n            return (1 + lenOfListLen, listLen, RLPItemType.LIST_ITEM);\\n        }\\n    }\\n\\n    /**\\n     * Copies the bytes from a memory location.\\n     * @param _src Pointer to the location to read from.\\n     * @param _offset Offset to start reading from.\\n     * @param _length Number of bytes to read.\\n     * @return Copied bytes.\\n     */\\n    function _copy(\\n        uint256 _src,\\n        uint256 _offset,\\n        uint256 _length\\n    )\\n        private\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory out = new bytes(_length);\\n        if (out.length == 0) {\\n            return out;\\n        }\\n\\n        uint256 src = _src + _offset;\\n        uint256 dest;\\n        assembly {\\n            dest := add(out, 32)\\n        }\\n\\n        // Copy over as many complete words as we can.\\n        for (uint256 i = 0; i < _length / 32; i++) {\\n            assembly {\\n                mstore(dest, mload(src))\\n            }\\n\\n            src += 32;\\n            dest += 32;\\n        }\\n\\n        // Pick out the remaining bytes.\\n        uint256 mask = 256 ** (32 - (_length % 32)) - 1;\\n        assembly {\\n            mstore(\\n                dest,\\n                or(\\n                    and(mload(src), not(mask)),\\n                    and(mload(dest), mask)\\n                )\\n            )\\n        }\\n\\n        return out;\\n    }\\n\\n    /**\\n     * Copies an RLP item into bytes.\\n     * @param _in RLP item to copy.\\n     * @return Copied bytes.\\n     */\\n    function _copy(\\n        RLPItem memory _in\\n    )\\n        private\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        return _copy(_in.ptr, 0, _in.length);\\n    }\\n}\\n\",\"keccak256\":\"0x829174c61216dce35fdb888383b6022e0365eb7fbdc71ad79d98b108091969fe\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/rlp/Lib_RLPWriter.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\npragma experimental ABIEncoderV2;\\n\\n/**\\n * @title Lib_RLPWriter\\n * @author Bakaoh (with modifications)\\n */\\nlibrary Lib_RLPWriter {\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    /**\\n     * RLP encodes a byte string.\\n     * @param _in The byte string to encode.\\n     * @return The RLP encoded string in bytes.\\n     */\\n    function writeBytes(\\n        bytes memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory encoded;\\n\\n        if (_in.length == 1 && uint8(_in[0]) < 128) {\\n            encoded = _in;\\n        } else {\\n            encoded = abi.encodePacked(_writeLength(_in.length, 128), _in);\\n        }\\n\\n        return encoded;\\n    }\\n\\n    /**\\n     * RLP encodes a list of RLP encoded byte byte strings.\\n     * @param _in The list of RLP encoded byte strings.\\n     * @return The RLP encoded list of items in bytes.\\n     */\\n    function writeList(\\n        bytes[] memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory list = _flatten(_in);\\n        return abi.encodePacked(_writeLength(list.length, 192), list);\\n    }\\n\\n    /**\\n     * RLP encodes a string.\\n     * @param _in The string to encode.\\n     * @return The RLP encoded string in bytes.\\n     */\\n    function writeString(\\n        string memory _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        return writeBytes(bytes(_in));\\n    }\\n\\n    /**\\n     * RLP encodes an address.\\n     * @param _in The address to encode.\\n     * @return The RLP encoded address in bytes.\\n     */\\n    function writeAddress(\\n        address _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        return writeBytes(abi.encodePacked(_in));\\n    }\\n\\n    /**\\n     * RLP encodes a bytes32 value.\\n     * @param _in The bytes32 to encode.\\n     * @return _out The RLP encoded bytes32 in bytes.\\n     */\\n    function writeBytes32(\\n        bytes32 _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory _out\\n        )\\n    {\\n        return writeBytes(abi.encodePacked(_in));\\n    }\\n\\n    /**\\n     * RLP encodes a uint.\\n     * @param _in The uint256 to encode.\\n     * @return The RLP encoded uint256 in bytes.\\n     */\\n    function writeUint(\\n        uint256 _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        return writeBytes(_toBinary(_in));\\n    }\\n\\n    /**\\n     * RLP encodes a bool.\\n     * @param _in The bool to encode.\\n     * @return The RLP encoded bool in bytes.\\n     */\\n    function writeBool(\\n        bool _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory encoded = new bytes(1);\\n        encoded[0] = (_in ? bytes1(0x01) : bytes1(0x80));\\n        return encoded;\\n    }\\n\\n\\n    /*********************\\n     * Private Functions *\\n     *********************/\\n\\n    /**\\n     * Encode the first byte, followed by the `len` in binary form if `length` is more than 55.\\n     * @param _len The length of the string or the payload.\\n     * @param _offset 128 if item is string, 192 if item is list.\\n     * @return RLP encoded bytes.\\n     */\\n    function _writeLength(\\n        uint256 _len,\\n        uint256 _offset\\n    )\\n        private\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory encoded;\\n\\n        if (_len < 56) {\\n            encoded = new bytes(1);\\n            encoded[0] = byte(uint8(_len) + uint8(_offset));\\n        } else {\\n            uint256 lenLen;\\n            uint256 i = 1;\\n            while (_len / i != 0) {\\n                lenLen++;\\n                i *= 256;\\n            }\\n\\n            encoded = new bytes(lenLen + 1);\\n            encoded[0] = byte(uint8(lenLen) + uint8(_offset) + 55);\\n            for(i = 1; i <= lenLen; i++) {\\n                encoded[i] = byte(uint8((_len / (256**(lenLen-i))) % 256));\\n            }\\n        }\\n\\n        return encoded;\\n    }\\n\\n    /**\\n     * Encode integer in big endian binary form with no leading zeroes.\\n     * @notice TODO: This should be optimized with assembly to save gas costs.\\n     * @param _x The integer to encode.\\n     * @return RLP encoded bytes.\\n     */\\n    function _toBinary(\\n        uint256 _x\\n    )\\n        private\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory b = abi.encodePacked(_x);\\n\\n        uint256 i = 0;\\n        for (; i < 32; i++) {\\n            if (b[i] != 0) {\\n                break;\\n            }\\n        }\\n\\n        bytes memory res = new bytes(32 - i);\\n        for (uint256 j = 0; j < res.length; j++) {\\n            res[j] = b[i++];\\n        }\\n\\n        return res;\\n    }\\n\\n    /**\\n     * Copies a piece of memory to another location.\\n     * @notice From: https://github.com/Arachnid/solidity-stringutils/blob/master/src/strings.sol.\\n     * @param _dest Destination location.\\n     * @param _src Source location.\\n     * @param _len Length of memory to copy.\\n     */\\n    function _memcpy(\\n        uint256 _dest,\\n        uint256 _src,\\n        uint256 _len\\n    )\\n        private\\n        pure\\n    {\\n        uint256 dest = _dest;\\n        uint256 src = _src;\\n        uint256 len = _len;\\n\\n        for(; len >= 32; len -= 32) {\\n            assembly {\\n                mstore(dest, mload(src))\\n            }\\n            dest += 32;\\n            src += 32;\\n        }\\n\\n        uint256 mask = 256 ** (32 - len) - 1;\\n        assembly {\\n            let srcpart := and(mload(src), not(mask))\\n            let destpart := and(mload(dest), mask)\\n            mstore(dest, or(destpart, srcpart))\\n        }\\n    }\\n\\n    /**\\n     * Flattens a list of byte strings into one byte string.\\n     * @notice From: https://github.com/sammayo/solidity-rlp-encoder/blob/master/RLPEncode.sol.\\n     * @param _list List of byte strings to flatten.\\n     * @return The flattened byte string.\\n     */\\n    function _flatten(\\n        bytes[] memory _list\\n    )\\n        private\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        if (_list.length == 0) {\\n            return new bytes(0);\\n        }\\n\\n        uint256 len;\\n        uint256 i = 0;\\n        for (; i < _list.length; i++) {\\n            len += _list[i].length;\\n        }\\n\\n        bytes memory flattened = new bytes(len);\\n        uint256 flattenedPtr;\\n        assembly { flattenedPtr := add(flattened, 0x20) }\\n\\n        for(i = 0; i < _list.length; i++) {\\n            bytes memory item = _list[i];\\n\\n            uint256 listPtr;\\n            assembly { listPtr := add(item, 0x20)}\\n\\n            _memcpy(flattenedPtr, listPtr, item.length);\\n            flattenedPtr += _list[i].length;\\n        }\\n\\n        return flattened;\\n    }\\n}\\n\",\"keccak256\":\"0xb60ee4b03ad372c3deff21d454ab714dd0c18ee3e6f9d45532e209fc59d5a54d\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/utils/Lib_Bytes32Utils.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/**\\n * @title Lib_Byte32Utils\\n */\\nlibrary Lib_Bytes32Utils {\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    /**\\n     * Converts a bytes32 value to a boolean. Anything non-zero will be converted to \\\"true.\\\"\\n     * @param _in Input bytes32 value.\\n     * @return Bytes32 as a boolean.\\n     */\\n    function toBool(\\n        bytes32 _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bool\\n        )\\n    {\\n        return _in != 0;\\n    }\\n\\n    /**\\n     * Converts a boolean to a bytes32 value.\\n     * @param _in Input boolean value.\\n     * @return Boolean as a bytes32.\\n     */\\n    function fromBool(\\n        bool _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        return bytes32(uint256(_in ? 1 : 0));\\n    }\\n\\n    /**\\n     * Converts a bytes32 value to an address. Takes the *last* 20 bytes.\\n     * @param _in Input bytes32 value.\\n     * @return Bytes32 as an address.\\n     */\\n    function toAddress(\\n        bytes32 _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            address\\n        )\\n    {\\n        return address(uint160(uint256(_in)));\\n    }\\n\\n    /**\\n     * Converts an address to a bytes32.\\n     * @param _in Input address value.\\n     * @return Address as a bytes32.\\n     */\\n    function fromAddress(\\n        address _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        return bytes32(uint256(_in));\\n    }\\n\\n    /**\\n     * Removes the leading zeros from a bytes32 value and returns a new (smaller) bytes value.\\n     * @param _in Input bytes32 value.\\n     * @return Bytes32 without any leading zeros.\\n     */\\n    function removeLeadingZeros(\\n        bytes32 _in\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory out;\\n\\n        assembly {\\n            // Figure out how many leading zero bytes to remove.\\n            let shift := 0\\n            for { let i := 0 } and(lt(i, 32), eq(byte(i, _in), 0)) { i := add(i, 1) } {\\n                shift := add(shift, 1)\\n            }\\n\\n            // Reserve some space for our output and fix the free memory pointer.\\n            out := mload(0x40)\\n            mstore(0x40, add(out, 0x40))\\n\\n            // Shift the value and store it into the output bytes.\\n            mstore(add(out, 0x20), shl(mul(shift, 8), _in))\\n\\n            // Store the new size (with leading zero bytes removed) in the output byte size.\\n            mstore(out, sub(32, shift))\\n        }\\n\\n        return out;\\n    }\\n}\\n\",\"keccak256\":\"0xfa2def593e3fc56a31852c3744aefdaa93cec74e721bfcfeb1e5d166c7c60b64\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/utils/Lib_BytesUtils.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/**\\n * @title Lib_BytesUtils\\n */\\nlibrary Lib_BytesUtils {\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    function slice(\\n        bytes memory _bytes,\\n        uint256 _start,\\n        uint256 _length\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        require(_length + 31 >= _length, \\\"slice_overflow\\\");\\n        require(_start + _length >= _start, \\\"slice_overflow\\\");\\n        require(_bytes.length >= _start + _length, \\\"slice_outOfBounds\\\");\\n\\n        bytes memory tempBytes;\\n\\n        assembly {\\n            switch iszero(_length)\\n            case 0 {\\n                // Get a location of some free memory and store it in tempBytes as\\n                // Solidity does for memory variables.\\n                tempBytes := mload(0x40)\\n\\n                // The first word of the slice result is potentially a partial\\n                // word read from the original array. To read it, we calculate\\n                // the length of that partial word and start copying that many\\n                // bytes into the array. The first word we copy will start with\\n                // data we don't care about, but the last `lengthmod` bytes will\\n                // land at the beginning of the contents of the new array. When\\n                // we're done copying, we overwrite the full first word with\\n                // the actual length of the slice.\\n                let lengthmod := and(_length, 31)\\n\\n                // The multiplication in the next line is necessary\\n                // because when slicing multiples of 32 bytes (lengthmod == 0)\\n                // the following copy loop was copying the origin's length\\n                // and then ending prematurely not copying everything it should.\\n                let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod)))\\n                let end := add(mc, _length)\\n\\n                for {\\n                    // The multiplication in the next line has the same exact purpose\\n                    // as the one above.\\n                    let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start)\\n                } lt(mc, end) {\\n                    mc := add(mc, 0x20)\\n                    cc := add(cc, 0x20)\\n                } {\\n                    mstore(mc, mload(cc))\\n                }\\n\\n                mstore(tempBytes, _length)\\n\\n                //update free-memory pointer\\n                //allocating the array padded to 32 bytes like the compiler does now\\n                mstore(0x40, and(add(mc, 31), not(31)))\\n            }\\n            //if we want a zero-length slice let's just return a zero-length array\\n            default {\\n                tempBytes := mload(0x40)\\n\\n                //zero out the 32 bytes slice we are about to return\\n                //we need to do it because Solidity does not garbage collect\\n                mstore(tempBytes, 0)\\n\\n                mstore(0x40, add(tempBytes, 0x20))\\n            }\\n        }\\n\\n        return tempBytes;\\n    }\\n\\n    function slice(\\n        bytes memory _bytes,\\n        uint256 _start\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        if (_start >= _bytes.length) {\\n            return bytes('');\\n        }\\n\\n        return slice(_bytes, _start, _bytes.length - _start);\\n    }\\n\\n    function toBytes32PadLeft(\\n        bytes memory _bytes\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        bytes32 ret;\\n        uint256 len = _bytes.length <= 32 ? _bytes.length : 32;\\n        assembly {\\n            ret := shr(mul(sub(32, len), 8), mload(add(_bytes, 32)))\\n        }\\n        return ret;\\n    }\\n\\n    function toBytes32(\\n        bytes memory _bytes\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        if (_bytes.length < 32) {\\n            bytes32 ret;\\n            assembly {\\n                ret := mload(add(_bytes, 32))\\n            }\\n            return ret;\\n        }\\n\\n        return abi.decode(_bytes,(bytes32)); // will truncate if input length > 32 bytes\\n    }\\n\\n    function toUint256(\\n        bytes memory _bytes\\n    )\\n        internal\\n        pure\\n        returns (\\n            uint256\\n        )\\n    {\\n        return uint256(toBytes32(_bytes));\\n    }\\n\\n    function toUint24(\\n        bytes memory _bytes,\\n        uint256 _start\\n    )\\n        internal\\n        pure\\n        returns (\\n            uint24\\n        )\\n    {\\n        require(_start + 3 >= _start, \\\"toUint24_overflow\\\");\\n        require(_bytes.length >= _start + 3 , \\\"toUint24_outOfBounds\\\");\\n        uint24 tempUint;\\n\\n        assembly {\\n            tempUint := mload(add(add(_bytes, 0x3), _start))\\n        }\\n\\n        return tempUint;\\n    }\\n\\n    function toUint8(\\n        bytes memory _bytes,\\n        uint256 _start\\n    )\\n        internal\\n        pure\\n        returns (\\n            uint8\\n        )\\n    {\\n        require(_start + 1 >= _start, \\\"toUint8_overflow\\\");\\n        require(_bytes.length >= _start + 1 , \\\"toUint8_outOfBounds\\\");\\n        uint8 tempUint;\\n\\n        assembly {\\n            tempUint := mload(add(add(_bytes, 0x1), _start))\\n        }\\n\\n        return tempUint;\\n    }\\n\\n    function toAddress(\\n        bytes memory _bytes,\\n        uint256 _start\\n    )\\n        internal\\n        pure\\n        returns (\\n            address\\n        )\\n    {\\n        require(_start + 20 >= _start, \\\"toAddress_overflow\\\");\\n        require(_bytes.length >= _start + 20, \\\"toAddress_outOfBounds\\\");\\n        address tempAddress;\\n\\n        assembly {\\n            tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000)\\n        }\\n\\n        return tempAddress;\\n    }\\n\\n    function toNibbles(\\n        bytes memory _bytes\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory nibbles = new bytes(_bytes.length * 2);\\n\\n        for (uint256 i = 0; i < _bytes.length; i++) {\\n            nibbles[i * 2] = _bytes[i] >> 4;\\n            nibbles[i * 2 + 1] = bytes1(uint8(_bytes[i]) % 16);\\n        }\\n\\n        return nibbles;\\n    }\\n\\n    function fromNibbles(\\n        bytes memory _bytes\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory ret = new bytes(_bytes.length / 2);\\n\\n        for (uint256 i = 0; i < ret.length; i++) {\\n            ret[i] = (_bytes[i * 2] << 4) | (_bytes[i * 2 + 1]);\\n        }\\n\\n        return ret;\\n    }\\n\\n    function equal(\\n        bytes memory _bytes,\\n        bytes memory _other\\n    )\\n        internal\\n        pure\\n        returns (\\n            bool\\n        )\\n    {\\n        return keccak256(_bytes) == keccak256(_other);\\n    }\\n}\\n\",\"keccak256\":\"0xd27e37973f1e0f64798725b7a0de12989dac992fba0d72970249d7e1f70e17c5\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/utils/Lib_ErrorUtils.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\npragma experimental ABIEncoderV2;\\n\\n/**\\n * @title Lib_ErrorUtils\\n */\\nlibrary Lib_ErrorUtils {\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    /**\\n     * Encodes an error string into raw solidity-style revert data.\\n     * (i.e. ascii bytes, prefixed with bytes4(keccak(\\\"Error(string))\\\"))\\n     * Ref: https://docs.soliditylang.org/en/v0.8.2/control-structures.html?highlight=Error(string)#panic-via-assert-and-error-via-require\\n     * @param _reason Reason for the reversion.\\n     * @return Standard solidity revert data for the given reason.\\n     */\\n    function encodeRevertString(\\n        string memory _reason\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        return abi.encodeWithSignature(\\n            \\\"Error(string)\\\",\\n            _reason\\n        );\\n    }\\n}\\n\",\"keccak256\":\"0xfc64ec4a81fb50865b502a0004ed154e8598e1a313db77303fc95e41f536e6b7\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/utils/Lib_EthUtils.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n// @unsupported: ovm\\npragma solidity >0.5.0 <0.8.0;\\npragma experimental ABIEncoderV2;\\n\\n/* Library Imports */\\nimport { Lib_RLPWriter } from \\\"../rlp/Lib_RLPWriter.sol\\\";\\nimport { Lib_Bytes32Utils } from \\\"./Lib_Bytes32Utils.sol\\\";\\n\\n/**\\n * @title Lib_EthUtils\\n */\\nlibrary Lib_EthUtils {\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    /**\\n     * Gets the code for a given address.\\n     * @param _address Address to get code for.\\n     * @param _offset Offset to start reading from.\\n     * @param _length Number of bytes to read.\\n     * @return Code read from the contract.\\n     */\\n    function getCode(\\n        address _address,\\n        uint256 _offset,\\n        uint256 _length\\n    )\\n        internal\\n        view\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        bytes memory code;\\n        assembly {\\n            code := mload(0x40)\\n            mstore(0x40, add(code, add(_length, 0x20)))\\n            mstore(code, _length)\\n            extcodecopy(_address, add(code, 0x20), _offset, _length)\\n        }\\n\\n        return code;\\n    }\\n\\n    /**\\n     * Gets the full code for a given address.\\n     * @param _address Address to get code for.\\n     * @return Full code of the contract.\\n     */\\n    function getCode(\\n        address _address\\n    )\\n        internal\\n        view\\n        returns (\\n            bytes memory\\n        )\\n    {\\n        return getCode(\\n            _address,\\n            0,\\n            getCodeSize(_address)\\n        );\\n    }\\n\\n    /**\\n     * Gets the size of a contract's code in bytes.\\n     * @param _address Address to get code size for.\\n     * @return Size of the contract's code in bytes.\\n     */\\n    function getCodeSize(\\n        address _address\\n    )\\n        internal\\n        view\\n        returns (\\n            uint256\\n        )\\n    {\\n        uint256 codeSize;\\n        assembly {\\n            codeSize := extcodesize(_address)\\n        }\\n\\n        return codeSize;\\n    }\\n\\n    /**\\n     * Gets the hash of a contract's code.\\n     * @param _address Address to get a code hash for.\\n     * @return Hash of the contract's code.\\n     */\\n    function getCodeHash(\\n        address _address\\n    )\\n        internal\\n        view\\n        returns (\\n            bytes32\\n        )\\n    {\\n        bytes32 codeHash;\\n        assembly {\\n            codeHash := extcodehash(_address)\\n        }\\n\\n        return codeHash;\\n    }\\n\\n    /**\\n     * Creates a contract with some given initialization code.\\n     * @param _code Contract initialization code.\\n     * @return Address of the created contract.\\n     */\\n    function createContract(\\n        bytes memory _code\\n    )\\n        internal\\n        returns (\\n            address\\n        )\\n    {\\n        address created;\\n        assembly {\\n            created := create(\\n                0,\\n                add(_code, 0x20),\\n                mload(_code)\\n            )\\n        }\\n\\n        return created;\\n    }\\n\\n    /**\\n     * Computes the address that would be generated by CREATE.\\n     * @param _creator Address creating the contract.\\n     * @param _nonce Creator's nonce.\\n     * @return Address to be generated by CREATE.\\n     */\\n    function getAddressForCREATE(\\n        address _creator,\\n        uint256 _nonce\\n    )\\n        internal\\n        pure\\n        returns (\\n            address\\n        )\\n    {\\n        bytes[] memory encoded = new bytes[](2);\\n        encoded[0] = Lib_RLPWriter.writeAddress(_creator);\\n        encoded[1] = Lib_RLPWriter.writeUint(_nonce);\\n\\n        bytes memory encodedList = Lib_RLPWriter.writeList(encoded);\\n        return Lib_Bytes32Utils.toAddress(keccak256(encodedList));\\n    }\\n\\n    /**\\n     * Computes the address that would be generated by CREATE2.\\n     * @param _creator Address creating the contract.\\n     * @param _bytecode Bytecode of the contract to be created.\\n     * @param _salt 32 byte salt value mixed into the hash.\\n     * @return Address to be generated by CREATE2.\\n     */\\n    function getAddressForCREATE2(\\n        address _creator,\\n        bytes memory _bytecode,\\n        bytes32 _salt\\n    )\\n        internal\\n        pure\\n        returns (\\n            address\\n        )\\n    {\\n        bytes32 hashedData = keccak256(abi.encodePacked(\\n            byte(0xff),\\n            _creator,\\n            _salt,\\n            keccak256(_bytecode)\\n        ));\\n\\n        return Lib_Bytes32Utils.toAddress(hashedData);\\n    }\\n}\\n\",\"keccak256\":\"0xf29a67d78e61cb472d524b779b32cfcb39a587f4096500d5419e6425ed367d49\",\"license\":\"MIT\"},\"contracts/optimistic-ethereum/libraries/utils/Lib_MerkleTree.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity >0.5.0 <0.8.0;\\n\\n/**\\n * @title Lib_MerkleTree\\n * @author River Keefer\\n */\\nlibrary Lib_MerkleTree {\\n\\n    /**********************\\n     * Internal Functions *\\n     **********************/\\n\\n    /**\\n     * Calculates a merkle root for a list of 32-byte leaf hashes.  WARNING: If the number\\n     * of leaves passed in is not a power of two, it pads out the tree with zero hashes.\\n     * If you do not know the original length of elements for the tree you are verifying,\\n     * then this may allow empty leaves past _elements.length to pass a verification check down the line.\\n     * Note that the _elements argument is modified, therefore it must not be used again afterwards\\n     * @param _elements Array of hashes from which to generate a merkle root.\\n     * @return Merkle root of the leaves, with zero hashes for non-powers-of-two (see above).\\n     */\\n    function getMerkleRoot(\\n        bytes32[] memory _elements\\n    )\\n        internal\\n        pure\\n        returns (\\n            bytes32\\n        )\\n    {\\n        require(\\n            _elements.length > 0,\\n            \\\"Lib_MerkleTree: Must provide at least one leaf hash.\\\"\\n        );\\n\\n        if (_elements.length == 1) {\\n            return _elements[0];\\n        }\\n\\n        uint256[16] memory defaults = [\\n            0x290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563,\\n            0x633dc4d7da7256660a892f8f1604a44b5432649cc8ec5cb3ced4c4e6ac94dd1d,\\n            0x890740a8eb06ce9be422cb8da5cdafc2b58c0a5e24036c578de2a433c828ff7d,\\n            0x3b8ec09e026fdc305365dfc94e189a81b38c7597b3d941c279f042e8206e0bd8,\\n            0xecd50eee38e386bd62be9bedb990706951b65fe053bd9d8a521af753d139e2da,\\n            0xdefff6d330bb5403f63b14f33b578274160de3a50df4efecf0e0db73bcdd3da5,\\n            0x617bdd11f7c0a11f49db22f629387a12da7596f9d1704d7465177c63d88ec7d7,\\n            0x292c23a9aa1d8bea7e2435e555a4a60e379a5a35f3f452bae60121073fb6eead,\\n            0xe1cea92ed99acdcb045a6726b2f87107e8a61620a232cf4d7d5b5766b3952e10,\\n            0x7ad66c0a68c72cb89e4fb4303841966e4062a76ab97451e3b9fb526a5ceb7f82,\\n            0xe026cc5a4aed3c22a58cbd3d2ac754c9352c5436f638042dca99034e83636516,\\n            0x3d04cffd8b46a874edf5cfae63077de85f849a660426697b06a829c70dd1409c,\\n            0xad676aa337a485e4728a0b240d92b3ef7b3c372d06d189322bfd5f61f1e7203e,\\n            0xa2fca4a49658f9fab7aa63289c91b7c7b6c832a6d0e69334ff5b0a3483d09dab,\\n            0x4ebfd9cd7bca2505f7bef59cc1c12ecc708fff26ae4af19abe852afe9e20c862,\\n            0x2def10d13dd169f550f578bda343d9717a138562e0093b380a1120789d53cf10\\n        ];\\n\\n        // Reserve memory space for our hashes.\\n        bytes memory buf = new bytes(64);\\n\\n        // We'll need to keep track of left and right siblings.\\n        bytes32 leftSibling;\\n        bytes32 rightSibling;\\n\\n        // Number of non-empty nodes at the current depth.\\n        uint256 rowSize = _elements.length;\\n\\n        // Current depth, counting from 0 at the leaves\\n        uint256 depth = 0;\\n\\n        // Common sub-expressions\\n        uint256 halfRowSize;         // rowSize / 2\\n        bool rowSizeIsOdd;           // rowSize % 2 == 1\\n\\n        while (rowSize > 1) {\\n            halfRowSize = rowSize / 2;\\n            rowSizeIsOdd = rowSize % 2 == 1;\\n\\n            for (uint256 i = 0; i < halfRowSize; i++) {\\n                leftSibling  = _elements[(2 * i)    ];\\n                rightSibling = _elements[(2 * i) + 1];\\n                assembly {\\n                    mstore(add(buf, 32), leftSibling )\\n                    mstore(add(buf, 64), rightSibling)\\n                }\\n\\n                _elements[i] = keccak256(buf);\\n            }\\n\\n            if (rowSizeIsOdd) {\\n                leftSibling  = _elements[rowSize - 1];\\n                rightSibling = bytes32(defaults[depth]);\\n                assembly {\\n                    mstore(add(buf, 32), leftSibling)\\n                    mstore(add(buf, 64), rightSibling)\\n                }\\n\\n                _elements[halfRowSize] = keccak256(buf);\\n            }\\n\\n            rowSize = halfRowSize + (rowSizeIsOdd ? 1 : 0);\\n            depth++;\\n        }\\n\\n        return _elements[0];\\n    }\\n\\n    /**\\n     * Verifies a merkle branch for the given leaf hash.  Assumes the original length\\n     * of leaves generated is a known, correct input, and does not return true for indices\\n     * extending past that index (even if _siblings would be otherwise valid.)\\n     * @param _root The Merkle root to verify against.\\n     * @param _leaf The leaf hash to verify inclusion of.\\n     * @param _index The index in the tree of this leaf.\\n     * @param _siblings Array of sibline nodes in the inclusion proof, starting from depth 0 (bottom of the tree).\\n     * @param _totalLeaves The total number of leaves originally passed into.\\n     * @return Whether or not the merkle branch and leaf passes verification.\\n     */\\n    function verify(\\n        bytes32 _root,\\n        bytes32 _leaf,\\n        uint256 _index,\\n        bytes32[] memory _siblings,\\n        uint256 _totalLeaves\\n    )\\n        internal\\n        pure\\n        returns (\\n            bool\\n        )\\n    {\\n        require(\\n            _totalLeaves > 0,\\n            \\\"Lib_MerkleTree: Total leaves must be greater than zero.\\\"\\n        );\\n\\n        require(\\n            _index < _totalLeaves,\\n            \\\"Lib_MerkleTree: Index out of bounds.\\\"\\n        );\\n\\n        require(\\n            _siblings.length == _ceilLog2(_totalLeaves),\\n            \\\"Lib_MerkleTree: Total siblings does not correctly correspond to total leaves.\\\"\\n        );\\n\\n        bytes32 computedRoot = _leaf;\\n\\n        for (uint256 i = 0; i < _siblings.length; i++) {\\n            if ((_index & 1) == 1) {\\n                computedRoot = keccak256(\\n                    abi.encodePacked(\\n                        _siblings[i],\\n                        computedRoot\\n                    )\\n                );\\n            } else {\\n                computedRoot = keccak256(\\n                    abi.encodePacked(\\n                        computedRoot,\\n                        _siblings[i]\\n                    )\\n                );\\n            }\\n\\n            _index >>= 1;\\n        }\\n\\n        return _root == computedRoot;\\n    }\\n\\n\\n    /*********************\\n     * Private Functions *\\n     *********************/\\n\\n    /**\\n     * Calculates the integer ceiling of the log base 2 of an input.\\n     * @param _in Unsigned input to calculate the log.\\n     * @return ceil(log_base_2(_in))\\n     */\\n    function _ceilLog2(\\n        uint256 _in\\n    )\\n        private\\n        pure\\n        returns (\\n            uint256\\n        )\\n    {\\n        require(\\n            _in > 0,\\n            \\\"Lib_MerkleTree: Cannot compute ceil(log_2) of 0.\\\"\\n        );\\n\\n        if (_in == 1) {\\n            return 0;\\n        }\\n\\n        // Find the highest set bit (will be floor(log_2)).\\n        // Borrowed with <3 from https://github.com/ethereum/solidity-examples\\n        uint256 val = _in;\\n        uint256 highest = 0;\\n        for (uint256 i = 128; i >= 1; i >>= 1) {\\n            if (val & (uint(1) << i) - 1 << i != 0) {\\n                highest += i;\\n                val >>= i;\\n            }\\n        }\\n\\n        // Increment by one if this is not a perfect logarithm.\\n        if ((uint(1) << highest) != _in) {\\n            highest += 1;\\n        }\\n\\n        return highest;\\n    }\\n}\\n\",\"keccak256\":\"0xa78edb9fbd34712771a1ebff05bc5e1abec7fc1e9a1bfb709d183099b44fa62a\",\"license\":\"MIT\"}},\"version\":1}",
  "bytecode": "[encoded data, 25256 characters]",
  "deployedBytecode": "[encoded data, 24868 characters]",
  "devdoc": {
    "details": "The Canonical Transaction Chain (CTC) contract is an append-only log of transactions which must be applied to the rollup state. It defines the ordering of rollup transactions by writing them to the 'CTC:batches' instance of the Chain Storage Container. The CTC also allows any account to 'enqueue' an L2 transaction, which will require that the Sequencer will eventually append it to the rollup state. If the Sequencer does not include an enqueued transaction within the 'force inclusion period', then any account may force it to be included by calling appendQueueBatch(). Compiler used: solc Runtime target: EVM",
    "kind": "dev",
    "methods": {
      "appendSequencerBatch()": {
        "details": "This function uses a custom encoding scheme for efficiency reasons. .param _shouldStartAtElement Specific batch we expect to start appending to. .param _totalElementsToAppend Total number of batch elements we expect to append. .param _contexts Array of batch contexts. .param _transactionDataFields Array of raw transaction data."
      },
      "batches()": {
        "returns": {
          "_0": "Reference to the batch storage container."
        }
      },
      "enqueue(address,uint256,bytes)": {
        "params": {
          "_data": "Transaction data.",
          "_gasLimit": "Gas limit for the enqueued L2 transaction.",
          "_target": "Target L2 contract to send the transaction to."
        }
      },
      "getLastBlockNumber()": {
        "returns": {
          "_0": "Blocknumber for the last transaction."
        }
      },
      "getLastTimestamp()": {
        "returns": {
          "_0": "Timestamp for the last transaction."
        }
      },
      "getNextQueueIndex()": {
        "returns": {
          "_0": "Index for the next queue element."
        }
      },
      "getNumPendingQueueElements()": {
        "returns": {
          "_0": "Number of pending queue elements."
        }
      },
      "getQueueElement(uint256)": {
        "params": {
          "_index": "Index of the queue element to access."
        },
        "returns": {
          "_element": "Queue element at the given index."
        }
      },
      "getQueueLength()": {
        "returns": {
          "_0": "Length of the queue."
        }
      },
      "getTotalBatches()": {
        "returns": {
          "_totalBatches": "Total submitted batches."
        }
      },
      "getTotalElements()": {
        "returns": {
          "_totalElements": "Total submitted elements."
        }
      },
      "queue()": {
        "returns": {
          "_0": "Reference to the queue storage container."
        }
      },
      "resolve(string)": {
        "params": {
          "_name": "Name to resolve an address for."
        },
        "returns": {
          "_0": "Address associated with the given name."
        }
      },
      "verifyTransaction((uint256,uint256,uint8,address,address,uint256,bytes),(bool,uint256,uint256,uint256,bytes),(uint256,bytes32,uint256,uint256,bytes),(uint256,bytes32[]))": {
        "params": {
          "_batchHeader": "Header of the batch the transaction was included in.",
          "_inclusionProof": "Inclusion proof for the provided transaction chain element.",
          "_transaction": "Transaction to verify.",
          "_txChainElement": "Transaction chain element corresponding to the transaction."
        },
        "returns": {
          "_0": "True if the transaction exists in the CTC, false if not."
        }
      }
    },
    "title": "OVM_CanonicalTransactionChain",
    "version": 1
  },
  "userdoc": {
    "kind": "user",
    "methods": {
      "appendQueueBatch(uint256)": {
        "notice": "Appends a given number of queued transactions as a single batch. param _numQueuedTransactions Number of transactions to append."
      },
      "appendSequencerBatch()": {
        "notice": "Allows the sequencer to append a batch of transactions."
      },
      "batches()": {
        "notice": "Accesses the batch storage container."
      },
      "enqueue(address,uint256,bytes)": {
        "notice": "Adds a transaction to the queue."
      },
      "getLastBlockNumber()": {
        "notice": "Returns the blocknumber of the last transaction."
      },
      "getLastTimestamp()": {
        "notice": "Returns the timestamp of the last transaction."
      },
      "getNextQueueIndex()": {
        "notice": "Returns the index of the next element to be enqueued."
      },
      "getNumPendingQueueElements()": {
        "notice": "Get the number of queue elements which have not yet been included."
      },
      "getQueueElement(uint256)": {
        "notice": "Gets the queue element at a particular index."
      },
      "getQueueLength()": {
        "notice": "Retrieves the length of the queue, including both pending and canonical transactions."
      },
      "getTotalBatches()": {
        "notice": "Retrieves the total number of batches submitted."
      },
      "getTotalElements()": {
        "notice": "Retrieves the total number of elements submitted."
      },
      "queue()": {
        "notice": "Accesses the queue storage container."
      },
      "resolve(string)": {
        "notice": "Resolves the address associated with a given name."
      },
      "verifyTransaction((uint256,uint256,uint8,address,address,uint256,bytes),(bool,uint256,uint256,uint256,bytes),(uint256,bytes32,uint256,uint256,bytes),(uint256,bytes32[]))": {
        "notice": "Verifies whether a transaction is included in the chain."
      }
    },
    "version": 1
  },
  "storageLayout": {
    "storage": [
      {
        "astId": 12856,
        "contract": "contracts/optimistic-ethereum/OVM/chain/OVM_CanonicalTransactionChain.sol:OVM_CanonicalTransactionChain",
        "label": "libAddressManager",
        "offset": 0,
        "slot": "0",
        "type": "t_contract(Lib_AddressManager)12849"
      },
      {
        "astId": 2987,
        "contract": "contracts/optimistic-ethereum/OVM/chain/OVM_CanonicalTransactionChain.sol:OVM_CanonicalTransactionChain",
        "label": "forceInclusionPeriodSeconds",
        "offset": 0,
        "slot": "1",
        "type": "t_uint256"
      },
      {
        "astId": 2989,
        "contract": "contracts/optimistic-ethereum/OVM/chain/OVM_CanonicalTransactionChain.sol:OVM_CanonicalTransactionChain",
        "label": "forceInclusionPeriodBlocks",
        "offset": 0,
        "slot": "2",
        "type": "t_uint256"
      },
      {
        "astId": 2991,
        "contract": "contracts/optimistic-ethereum/OVM/chain/OVM_CanonicalTransactionChain.sol:OVM_CanonicalTransactionChain",
        "label": "maxTransactionGasLimit",
        "offset": 0,
        "slot": "3",
        "type": "t_uint256"
      }
    ],
    "types": {
      "t_contract(Lib_AddressManager)12849": {
        "encoding": "inplace",
        "label": "contract Lib_AddressManager",
        "numberOfBytes": "20"
      },
      "t_uint256": {
        "encoding": "inplace",
        "label": "uint256",
        "numberOfBytes": "32"
      }
    }
  }
}