Artifacts

DISCLAIMER // NFA // DYOR

This analysis is based on observations of the contract behavior. We are not smart contract security experts. This document aims to explain what the contract appears to do based on the code. It should not be considered a comprehensive security audit or financial advice. Always verify critical information independently and consult with blockchain security professionals for important decisions.

⊙ generated by robots | curated by humans

METADATA
Contract Address	`0x090D4613473dEE047c3f2706764f49e0821D256e` (etherscan)
Network	Ethereum Mainnet
Analysis Date	2026-03-19

Runtime Bytecode

The deployed contract bytecode fetched from the blockchain.

Source: Etherscan - Contract Code

Command:

export ETH_RPC_URL=https://eth.llamarpc.com
cast code 0x090D4613473dEE047c3f2706764f49e0821D256e

Artifact:

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

Creation Bytecode

The full bytecode used to deploy the contract, including constructor code and arguments.

Source: Etherscan - Creation TX

Command:

export ETH_RPC_URL=https://eth.llamarpc.com
cast tx 0x1d80567e3e5946d391a72125f57f203732f8dd706ce6007e4a729a592b8624cd input

Artifact:

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

Constructor Arguments (Decoded)

token_:      0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 (UNI)
merkleRoot_: 0xc8500f8e2fcf3c9a32880e1b973fb28acc88be35787a8abcf9981b2b65dbdeb5

Verified Source Code

Source code verified on Etherscan (Exact Match).

Source: Etherscan - Contract Source

Artifact:

// SPDX-License-Identifier: UNLICENSED
pragma solidity =0.6.11;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

/**
 * @dev These functions deal with verification of Merkle trees (hash trees),
 */
library MerkleProof {
    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) {
                computedHash = keccak256(abi.encodePacked(computedHash, proofElement));
            } else {
                computedHash = keccak256(abi.encodePacked(proofElement, computedHash));
            }
        }

        return computedHash == root;
    }
}

// Allows anyone to claim a token if they exist in a merkle root.
interface IMerkleDistributor {
    function token() external view returns (address);
    function merkleRoot() external view returns (bytes32);
    function isClaimed(uint256 index) external view returns (bool);
    function claim(uint256 index, address account, uint256 amount, bytes32[] calldata merkleProof) external;
    event Claimed(uint256 index, address account, uint256 amount);
}

contract MerkleDistributor is IMerkleDistributor {
    address public immutable override token;
    bytes32 public immutable override merkleRoot;

    // This is a packed array of booleans.
    mapping(uint256 => uint256) private claimedBitMap;

    constructor(address token_, bytes32 merkleRoot_) public {
        token = token_;
        merkleRoot = merkleRoot_;
    }

    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);
    }
}

Additional Artifacts

ABI

Source: Etherscan verified contract ABI

Artifact:

href="#__codelineno-6-1">[ { "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": [ {"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": "token", "outputs": [ {"internalType": "address", "name": "", "type": "address"} ], "stateMutability": "view", "type": "function" } ]