Overview
ETH Balance
0 ETH
Eth Value
$0.00More Info
Private Name Tags
ContractCreator
Latest 25 from a total of 579 transactions
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Fold | 16974546 | 552 days ago | IN | 0 ETH | 0.00126075 | ||||
Claim | 16576660 | 608 days ago | IN | 0 ETH | 0.00142594 | ||||
Claim | 15539217 | 753 days ago | IN | 0 ETH | 0.00062451 | ||||
Claim | 15522469 | 756 days ago | IN | 0 ETH | 0.00040787 | ||||
Claim | 15188085 | 809 days ago | IN | 0 ETH | 0.00203839 | ||||
Claim | 15032976 | 833 days ago | IN | 0 ETH | 0.0009399 | ||||
Claim | 15032967 | 833 days ago | IN | 0 ETH | 0.00114535 | ||||
Claim | 15012710 | 837 days ago | IN | 0 ETH | 0.00083944 | ||||
Claim | 15000771 | 839 days ago | IN | 0 ETH | 0.00133388 | ||||
Claim | 14998455 | 840 days ago | IN | 0 ETH | 0.00112981 | ||||
Claim | 14972482 | 844 days ago | IN | 0 ETH | 0.00257656 | ||||
Claim | 14779171 | 876 days ago | IN | 0 ETH | 0.00132066 | ||||
Claim | 14597013 | 905 days ago | IN | 0 ETH | 0.00170501 | ||||
Claim | 14587488 | 906 days ago | IN | 0 ETH | 0.00191066 | ||||
Claim | 14569949 | 909 days ago | IN | 0 ETH | 0.00148692 | ||||
Claim | 14512849 | 918 days ago | IN | 0 ETH | 0.00268355 | ||||
Claim | 14507057 | 919 days ago | IN | 0 ETH | 0.00290564 | ||||
Claim | 14452856 | 927 days ago | IN | 0 ETH | 0.00262141 | ||||
Claim | 14452841 | 928 days ago | IN | 0 ETH | 0.0025206 | ||||
Claim | 14452826 | 928 days ago | IN | 0 ETH | 0.00295966 | ||||
Claim | 14450523 | 928 days ago | IN | 0 ETH | 0.00273299 | ||||
Claim | 14450523 | 928 days ago | IN | 0 ETH | 0.00510362 | ||||
Claim | 14438948 | 930 days ago | IN | 0 ETH | 0.00179466 | ||||
Claim | 14353208 | 943 days ago | IN | 0 ETH | 0.00201991 | ||||
Claim | 14332843 | 946 days ago | IN | 0 ETH | 0.00121353 |
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Contract Name:
MerkleDistributor
Compiler Version
v0.6.11+commit.5ef660b1
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: UNLICENSED pragma solidity =0.6.11; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/cryptography/MerkleProof.sol"; import "./interfaces/IMerkleDistributor.sol"; contract MerkleDistributor is IMerkleDistributor { address public immutable override token; bytes32 public immutable override merkleRoot; address public owner; uint public unlock; // This is a packed array of booleans. mapping(uint256 => uint256) private claimedBitMap; constructor(address token_, bytes32 merkleRoot_) public { token = token_; merkleRoot = merkleRoot_; owner = msg.sender; unlock = block.timestamp + 365 days; } function isClaimed(uint256 index) public view override returns (bool) { uint256 claimedWordIndex = index / 256; uint256 claimedBitIndex = index % 256; uint256 claimedWord = claimedBitMap[claimedWordIndex]; uint256 mask = (1 << claimedBitIndex); return claimedWord & mask == mask; } function _setClaimed(uint256 index) private { uint256 claimedWordIndex = index / 256; uint256 claimedBitIndex = index % 256; claimedBitMap[claimedWordIndex] = claimedBitMap[claimedWordIndex] | (1 << claimedBitIndex); } function claim(uint256 index, address account, uint256 amount, bytes32[] calldata merkleProof) external override { require(!isClaimed(index), 'MerkleDistributor: Drop already claimed.'); // Verify the merkle proof. bytes32 node = keccak256(abi.encodePacked(index, account, amount)); require(MerkleProof.verify(merkleProof, merkleRoot, node), 'MerkleDistributor: Invalid proof.'); // Mark it claimed and send the token. _setClaimed(index); require(IERC20(token).transfer(account, amount), 'MerkleDistributor: Transfer failed.'); emit Claimed(index, account, amount); } function fold() public { require(block.timestamp >= unlock, 'MerkleDistributor: Claim period has not passed.'); uint amount = IERC20(token).balanceOf(address(this)); require(IERC20(token).transfer(owner, amount)); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev These functions deal with verification of Merkle trees (hash trees), */ library MerkleProof { /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf) internal pure returns (bool) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = keccak256(abi.encodePacked(computedHash, proofElement)); } else { // Hash(current element of the proof + current computed hash) computedHash = keccak256(abi.encodePacked(proofElement, computedHash)); } } // Check if the computed hash (root) is equal to the provided root return computedHash == root; } }
// SPDX-License-Identifier: UNLICENSED pragma solidity >=0.5.0; // Allows anyone to claim a token if they exist in a merkle root. interface IMerkleDistributor { // Returns the address of the token distributed by this contract. function token() external view returns (address); // Returns the merkle root of the merkle tree containing account balances available to claim. function merkleRoot() external view returns (bytes32); // Returns true if the index has been marked claimed. function isClaimed(uint256 index) external view returns (bool); // Claim the given amount of the token to the given address. Reverts if the inputs are invalid. function claim(uint256 index, address account, uint256 amount, bytes32[] calldata merkleProof) external; // This event is triggered whenever a call to #claim succeeds. event Claimed(uint256 index, address account, uint256 amount); }
{ "optimizer": { "enabled": false, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"token_","type":"address"},{"internalType":"bytes32","name":"merkleRoot_","type":"bytes32"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"index","type":"uint256"},{"indexed":false,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Claimed","type":"event"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"},{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32[]","name":"merkleProof","type":"bytes32[]"}],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"fold","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"isClaimed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"merkleRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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)
000000000000000000000000c477d038d5420c6a9e0b031712f61c5120090de972045dcba594847f85f2981d35ebd069a3ce151b5e4cd3225a1a6a233fde8d46
-----Decoded View---------------
Arg [0] : token_ (address): 0xC477D038d5420C6A9e0b031712f61c5120090de9
Arg [1] : merkleRoot_ (bytes32): 0x72045dcba594847f85f2981d35ebd069a3ce151b5e4cd3225a1a6a233fde8d46
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000c477d038d5420c6a9e0b031712f61c5120090de9
Arg [1] : 72045dcba594847f85f2981d35ebd069a3ce151b5e4cd3225a1a6a233fde8d46
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