Contract

0xEf50F956d20066eBE63bf38daEBB25d7c5D28944

Source Code

Overview

POL Balance

0 POL

POL Value

$0.00

More Info

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ContractCreator

Risy DAO: Deployer at txn 0x1c85ab4f13c9e78b43079153353510d35cfc141ecc60b24a686f2df5894b96ed

Multichain Info

$0 (Multichain Portfolio)

Advanced Filter

Latest 1 from a total of 1 transactions

	Transaction Hash	Method	Block		From		To
	0xe2a2e75062cfca272cf1d815283f58049ed45f664c936270dbf24d6d56ff84a8	Draw Winner	66154247	2024-12-31 21:00:06	112 days ago	1735678806	Risy DAO: Deployer	IN	0xEf50F956...7c5D28944	0 POL$0.00	0.00498281	61.75722087

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Contract Source Code Verified (Exact Match)

Contract Name:

RisyRaffle

Compiler Version

v0.8.20+commit.a1b79de6

Optimization Enabled:

Yes with 999999 runs

Other Settings:

paris EvmVersion

Contract Source Code (Solidity Standard Json-Input format)

IDE

File 1 of 1 : RisyRaffle.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

interface IERC721 {
    function ownerOf(uint256 tokenId) external view returns (address);
    function totalSupply() external view returns (uint256);
}

contract RisyRaffle {
    address public immutable nftContract;
    uint256 public winningTicketId;
    address public winner;
    bool public isDrawComplete;
    address public owner;

    event WinnerSelected(uint256 indexed ticketId, address indexed winner);

    modifier onlyOwner() {
        require(msg.sender == owner, "Only owner can call this function");
        _;
    }

    constructor(address _nftContract) {
        nftContract = _nftContract;
        owner = msg.sender;
    }

    function drawWinner() external onlyOwner {
        require(!isDrawComplete, "Draw already completed");
        
        uint256 totalTickets = IERC721(nftContract).totalSupply();
        require(totalTickets > 0, "No tickets minted");

        // Using block variables for randomness
        // Note: This is not cryptographically secure, but simple enough for this use case
        uint256 randomNumber = uint256(
            keccak256(
                abi.encodePacked(
                    block.timestamp,
                    block.prevrandao,
                    block.number
                )
            )
        );

        // Select winning ticket (1-based index since NFT IDs typically start at 1)
        winningTicketId = (randomNumber % totalTickets) + 1;
        
        // Get the winner's address
        winner = IERC721(nftContract).ownerOf(winningTicketId);
        
        isDrawComplete = true;
        
        emit WinnerSelected(winningTicketId, winner);
    }

    // Allow owner to transfer ownership
    function transferOwnership(address newOwner) external onlyOwner {
        require(newOwner != address(0), "New owner cannot be zero address");
        owner = newOwner;
    }
}

Settings

{
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

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Contract ABI

API

[{"inputs":[{"internalType":"address","name":"_nftContract","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"ticketId","type":"uint256"},{"indexed":true,"internalType":"address","name":"winner","type":"address"}],"name":"WinnerSelected","type":"event"},{"inputs":[],"name":"drawWinner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"isDrawComplete","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nftContract","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"winner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"winningTicketId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

Contract Creation Code

Decompile Bytecode Switch to Opcodes View

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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)

0000000000000000000000007615ff3dd6762f54494f3d0aa22ec5dd0a0b15ae

-----Decoded View---------------
Arg [0] : _nftContract (address): 0x7615ff3DD6762f54494F3d0Aa22Ec5DD0a0b15Ae

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000007615ff3dd6762f54494f3d0aa22ec5dd0a0b15ae

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