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Contract Name:
PolygonZkEVMGlobalExitRootV2
Compiler Version
v0.8.20+commit.a1b79de6
Optimization Enabled:
Yes with 999999 runs
Other Settings:
shanghai EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: AGPL-3.0 pragma solidity 0.8.20; import "./interfaces/IPolygonZkEVMGlobalExitRootV2.sol"; import "./lib/PolygonZkEVMGlobalExitRootBaseStorage.sol"; import "../lib/GlobalExitRootLib.sol"; import "./lib/DepositContractBase.sol"; /** * Contract responsible for managing the exit roots across multiple networks */ contract PolygonZkEVMGlobalExitRootV2 is PolygonZkEVMGlobalExitRootBaseStorage, DepositContractBase { // PolygonZkEVMBridge address address public immutable bridgeAddress; // Rollup manager contract address address public immutable rollupManager; /** * @dev Emitted when the global exit root is updated */ event UpdateL1InfoTree( bytes32 indexed mainnetExitRoot, bytes32 indexed rollupExitRoot ); /** * @param _rollupManager Rollup manager contract address * @param _bridgeAddress PolygonZkEVMBridge contract address */ constructor(address _rollupManager, address _bridgeAddress) { rollupManager = _rollupManager; bridgeAddress = _bridgeAddress; } /** * @notice Update the exit root of one of the networks and the global exit root * @param newRoot new exit tree root */ function updateExitRoot(bytes32 newRoot) external { // Store storage variables into temporal variables since will be used multiple times bytes32 cacheLastRollupExitRoot; bytes32 cacheLastMainnetExitRoot; if (msg.sender == bridgeAddress) { lastMainnetExitRoot = newRoot; cacheLastMainnetExitRoot = newRoot; cacheLastRollupExitRoot = lastRollupExitRoot; } else if (msg.sender == rollupManager) { lastRollupExitRoot = newRoot; cacheLastRollupExitRoot = newRoot; cacheLastMainnetExitRoot = lastMainnetExitRoot; } else { revert OnlyAllowedContracts(); } bytes32 newGlobalExitRoot = GlobalExitRootLib.calculateGlobalExitRoot( cacheLastMainnetExitRoot, cacheLastRollupExitRoot ); // If it already exists, do not modify the blockhash if (globalExitRootMap[newGlobalExitRoot] == 0) { uint256 lastBlockHash = uint256(blockhash(block.number - 1)); globalExitRootMap[newGlobalExitRoot] = lastBlockHash; // save new leaf in L1InfoTree _addLeaf( getLeafValue( newGlobalExitRoot, lastBlockHash, uint64(block.timestamp) ) ); emit UpdateL1InfoTree( cacheLastMainnetExitRoot, cacheLastRollupExitRoot ); } } /** * @notice Return last global exit root */ function getLastGlobalExitRoot() public view returns (bytes32) { return GlobalExitRootLib.calculateGlobalExitRoot( lastMainnetExitRoot, lastRollupExitRoot ); } /** * @notice Computes and returns the merkle root of the L1InfoTree */ function getRoot() public view override(DepositContractBase, IPolygonZkEVMGlobalExitRootV2) returns (bytes32) { return super.getRoot(); } /** * @notice Given the leaf data returns the leaf hash * @param newGlobalExitRoot Last global exit root * @param lastBlockHash Last accesible block hash * @param timestamp Ethereum timestamp in seconds */ function getLeafValue( bytes32 newGlobalExitRoot, uint256 lastBlockHash, uint64 timestamp ) public pure returns (bytes32) { return keccak256( abi.encodePacked(newGlobalExitRoot, lastBlockHash, timestamp) ); } }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.20; interface IBasePolygonZkEVMGlobalExitRoot { /** * @dev Thrown when the caller is not the allowed contracts */ error OnlyAllowedContracts(); function updateExitRoot(bytes32 newRollupExitRoot) external; function globalExitRootMap( bytes32 globalExitRootNum ) external returns (uint256); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity 0.8.20; /** * @dev A library that provides the necessary calculations to calculate the global exit root */ library GlobalExitRootLib { function calculateGlobalExitRoot( bytes32 mainnetExitRoot, bytes32 rollupExitRoot ) internal pure returns (bytes32) { return keccak256(abi.encodePacked(mainnetExitRoot, rollupExitRoot)); } }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.20; import "../../interfaces/IBasePolygonZkEVMGlobalExitRoot.sol"; interface IPolygonZkEVMGlobalExitRootV2 is IBasePolygonZkEVMGlobalExitRoot { function getLastGlobalExitRoot() external view returns (bytes32); function getRoot() external view returns (bytes32); }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.20; /** * This contract will be used as a helper for all the sparse merkle tree related functions * Based on the implementation of the deposit eth2.0 contract https://github.com/ethereum/consensus-specs/blob/dev/solidity_deposit_contract/deposit_contract.sol */ contract DepositContractBase { /** * @dev Thrown when the merkle tree is full */ error MerkleTreeFull(); // Merkle tree levels uint256 internal constant _DEPOSIT_CONTRACT_TREE_DEPTH = 32; // This ensures `depositCount` will fit into 32-bits uint256 internal constant _MAX_DEPOSIT_COUNT = 2 ** _DEPOSIT_CONTRACT_TREE_DEPTH - 1; // Branch array which contains the necessary sibilings to compute the next root when a new // leaf is inserted bytes32[_DEPOSIT_CONTRACT_TREE_DEPTH] internal _branch; // Counter of current deposits uint256 public depositCount; /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. */ uint256[10] private _gap; /** * @notice Computes and returns the merkle root */ function getRoot() public view virtual returns (bytes32) { bytes32 node; uint256 size = depositCount; bytes32 currentZeroHashHeight = 0; for ( uint256 height = 0; height < _DEPOSIT_CONTRACT_TREE_DEPTH; height++ ) { if (((size >> height) & 1) == 1) node = keccak256(abi.encodePacked(_branch[height], node)); else node = keccak256(abi.encodePacked(node, currentZeroHashHeight)); currentZeroHashHeight = keccak256( abi.encodePacked(currentZeroHashHeight, currentZeroHashHeight) ); } return node; } /** * @notice Add a new leaf to the merkle tree * @param leaf Leaf */ function _addLeaf(bytes32 leaf) internal { bytes32 node = leaf; // Avoid overflowing the Merkle tree (and prevent edge case in computing `_branch`) if (depositCount >= _MAX_DEPOSIT_COUNT) { revert MerkleTreeFull(); } // Add deposit data root to Merkle tree (update a single `_branch` node) uint256 size = ++depositCount; for ( uint256 height = 0; height < _DEPOSIT_CONTRACT_TREE_DEPTH; height++ ) { if (((size >> height) & 1) == 1) { _branch[height] = node; return; } node = keccak256(abi.encodePacked(_branch[height], node)); } // As the loop should always end prematurely with the `return` statement, // this code should be unreachable. We assert `false` just to be safe. assert(false); } /** * @notice Verify merkle proof * @param leafHash Leaf hash * @param smtProof Smt proof * @param index Index of the leaf * @param root Merkle root */ function verifyMerkleProof( bytes32 leafHash, bytes32[_DEPOSIT_CONTRACT_TREE_DEPTH] calldata smtProof, uint32 index, bytes32 root ) public pure returns (bool) { return calculateRoot(leafHash, smtProof, index) == root; } /** * @notice Calculate root from merkle proof * @param leafHash Leaf hash * @param smtProof Smt proof * @param index Index of the leaf */ function calculateRoot( bytes32 leafHash, bytes32[_DEPOSIT_CONTRACT_TREE_DEPTH] calldata smtProof, uint32 index ) public pure returns (bytes32) { bytes32 node = leafHash; // Compute root for ( uint256 height = 0; height < _DEPOSIT_CONTRACT_TREE_DEPTH; height++ ) { if (((index >> height) & 1) == 1) node = keccak256(abi.encodePacked(smtProof[height], node)); else node = keccak256(abi.encodePacked(node, smtProof[height])); } return node; } }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.20; import "../interfaces/IPolygonZkEVMGlobalExitRootV2.sol"; /** * Since the current contract of PolygonZkEVMGlobalExitRoot will be upgraded to a PolygonZkEVMGlobalExitRootV2, and it will implement * the DepositContractBase, this base is needed to preserve the previous storage slots */ abstract contract PolygonZkEVMGlobalExitRootBaseStorage is IPolygonZkEVMGlobalExitRootV2 { // Rollup root, contains all exit roots of all rollups bytes32 public lastRollupExitRoot; // Mainnet exit root, this will be updated every time a deposit is made in mainnet bytes32 public lastMainnetExitRoot; // Store every global exit root: Root --> blockhash // Note that previously recoded global exit roots in previous versions, timestamp was recorded instead of blockhash mapping(bytes32 => uint256) public globalExitRootMap; }
{ "optimizer": { "enabled": true, "runs": 999999 }, "evmVersion": "shanghai", "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"_rollupManager","type":"address"},{"internalType":"address","name":"_bridgeAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"MerkleTreeFull","type":"error"},{"inputs":[],"name":"OnlyAllowedContracts","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"mainnetExitRoot","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"rollupExitRoot","type":"bytes32"}],"name":"UpdateL1InfoTree","type":"event"},{"inputs":[],"name":"bridgeAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"leafHash","type":"bytes32"},{"internalType":"bytes32[32]","name":"smtProof","type":"bytes32[32]"},{"internalType":"uint32","name":"index","type":"uint32"}],"name":"calculateRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"depositCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getLastGlobalExitRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"newGlobalExitRoot","type":"bytes32"},{"internalType":"uint256","name":"lastBlockHash","type":"uint256"},{"internalType":"uint64","name":"timestamp","type":"uint64"}],"name":"getLeafValue","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"getRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"globalExitRootMap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastMainnetExitRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastRollupExitRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rollupManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"newRoot","type":"bytes32"}],"name":"updateExitRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"leafHash","type":"bytes32"},{"internalType":"bytes32[32]","name":"smtProof","type":"bytes32[32]"},{"internalType":"uint32","name":"index","type":"uint32"},{"internalType":"bytes32","name":"root","type":"bytes32"}],"name":"verifyMerkleProof","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000005132a183e9f3cb7c848b0aac5ae0c4f0491b7ab20000000000000000000000002a3dd3eb832af982ec71669e178424b10dca2ede
-----Decoded View---------------
Arg [0] : _rollupManager (address): 0x5132A183E9F3CB7C848b0AAC5Ae0c4f0491B7aB2
Arg [1] : _bridgeAddress (address): 0x2a3DD3EB832aF982ec71669E178424b10Dca2EDe
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000005132a183e9f3cb7c848b0aac5ae0c4f0491b7ab2
Arg [1] : 0000000000000000000000002a3dd3eb832af982ec71669e178424b10dca2ede
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.