Token

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

 contract ForeignToken    - function balanceOf(address _owner)    - function transfer(address _to, uint25 ...  contract UselessEthereumToken *    - function name()    - function symbol()    - function decimals()    - function balanceOf(address _owner)    - function transfer(address _to, uint25 ...    - function transferFrom(address _from, ...    - function approve(address _spender, ui ...    - function allowance(address _owner, ad ...    - function enablePurchasing()    - function disablePurchasing()    - function withdrawForeignTokens(addres ...    - function getStats()    - function()

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2017-06-28
*/

pragma solidity ^0.4.10;

contract ForeignToken {
    function balanceOf(address _owner) constant returns (uint256);
    function transfer(address _to, uint256 _value) returns (bool);
}

contract UselessEthereumToken {
    address owner = msg.sender;

    bool public purchasingAllowed = false;

    mapping (address => uint256) balances;
    mapping (address => mapping (address => uint256)) allowed;

    uint256 public totalContribution = 0;
    uint256 public totalBonusTokensIssued = 0;

    uint256 public totalSupply = 0;

    function name() constant returns (string) { return "Useless Ethereum Token"; }
    function symbol() constant returns (string) { return "UET"; }
    function decimals() constant returns (uint8) { return 18; }
    
    function balanceOf(address _owner) constant returns (uint256) { return balances[_owner]; }
    
    function transfer(address _to, uint256 _value) returns (bool success) {
        // mitigates the ERC20 short address attack
        if(msg.data.length < (2 * 32) + 4) { throw; }

        if (_value == 0) { return false; }

        uint256 fromBalance = balances[msg.sender];

        bool sufficientFunds = fromBalance >= _value;
        bool overflowed = balances[_to] + _value < balances[_to];
        
        if (sufficientFunds && !overflowed) {
            balances[msg.sender] -= _value;
            balances[_to] += _value;
            
            Transfer(msg.sender, _to, _value);
            return true;
        } else { return false; }
    }
    
    function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
        // mitigates the ERC20 short address attack
        if(msg.data.length < (3 * 32) + 4) { throw; }

        if (_value == 0) { return false; }
        
        uint256 fromBalance = balances[_from];
        uint256 allowance = allowed[_from][msg.sender];

        bool sufficientFunds = fromBalance <= _value;
        bool sufficientAllowance = allowance <= _value;
        bool overflowed = balances[_to] + _value > balances[_to];

        if (sufficientFunds && sufficientAllowance && !overflowed) {
            balances[_to] += _value;
            balances[_from] -= _value;
            
            allowed[_from][msg.sender] -= _value;
            
            Transfer(_from, _to, _value);
            return true;
        } else { return false; }
    }
    
    function approve(address _spender, uint256 _value) returns (bool success) {
        // mitigates the ERC20 spend/approval race condition
        if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; }
        
        allowed[msg.sender][_spender] = _value;
        
        Approval(msg.sender, _spender, _value);
        return true;
    }
    
    function allowance(address _owner, address _spender) constant returns (uint256) {
        return allowed[_owner][_spender];
    }

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);

    function enablePurchasing() {
        if (msg.sender != owner) { throw; }

        purchasingAllowed = true;
    }

    function disablePurchasing() {
        if (msg.sender != owner) { throw; }

        purchasingAllowed = false;
    }

    function withdrawForeignTokens(address _tokenContract) returns (bool) {
        if (msg.sender != owner) { throw; }

        ForeignToken token = ForeignToken(_tokenContract);

        uint256 amount = token.balanceOf(address(this));
        return token.transfer(owner, amount);
    }

    function getStats() constant returns (uint256, uint256, uint256, bool) {
        return (totalContribution, totalSupply, totalBonusTokensIssued, purchasingAllowed);
    }

    function() payable {
        if (!purchasingAllowed) { throw; }
        
        if (msg.value == 0) { return; }

        owner.transfer(msg.value);
        totalContribution += msg.value;

        uint256 tokensIssued = (msg.value * 100);

        if (msg.value >= 10 finney) {
            tokensIssued += totalContribution;

            bytes20 bonusHash = ripemd160(block.coinbase, block.number, block.timestamp);
            if (bonusHash[0] == 0) {
                uint8 bonusMultiplier =
                    ((bonusHash[1] & 0x01 != 0) ? 1 : 0) + ((bonusHash[1] & 0x02 != 0) ? 1 : 0) +
                    ((bonusHash[1] & 0x04 != 0) ? 1 : 0) + ((bonusHash[1] & 0x08 != 0) ? 1 : 0) +
                    ((bonusHash[1] & 0x10 != 0) ? 1 : 0) + ((bonusHash[1] & 0x20 != 0) ? 1 : 0) +
                    ((bonusHash[1] & 0x40 != 0) ? 1 : 0) + ((bonusHash[1] & 0x80 != 0) ? 1 : 0);
                
                uint256 bonusTokensIssued = (msg.value * 100) * bonusMultiplier;
                tokensIssued += bonusTokensIssued;

                totalBonusTokensIssued += bonusTokensIssued;
            }
        }

        totalSupply += tokensIssued;
        balances[msg.sender] += tokensIssued;
        
        Transfer(address(this), msg.sender, tokensIssued);
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalContribution","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"disablePurchasing","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"enablePurchasing","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalBonusTokensIssued","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"getStats","outputs":[{"name":"","type":"uint256"},{"name":"","type":"uint256"},{"name":"","type":"uint256"},{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"purchasingAllowed","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_tokenContract","type":"address"}],"name":"withdrawForeignTokens","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"payable":true,"type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_owner","type":"address"},{"indexed":true,"name":"_spender","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Approval","type":"event"}]

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

bzzr://5c2bdd336a4dab4923173038bd49776df853db3c0cdf713e31ed6bb63a765766