Contract

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

• library SafeMath
•    - function mul(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b)
•    - function add(uint256 a, uint256 b)
•  contract Precious *
•    - function Precious()
•    - function balanceOf(address _owner)
•    - function allowance(address _owner, ad ...
•    - function transfer(address _to, uint25 ...
•    - function transferFrom(address _from, ...
•    - function approve(address _spender, ui ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2017-10-22
*/

pragma solidity ^ 0.4 .9;
library SafeMath {
    function mul(uint256 a, uint256 b) internal constant returns(uint256) {
        uint256 c = a * b;
        assert(a == 0 || c / a == b);
        return c;
    }

    function div(uint256 a, uint256 b) internal constant returns(uint256) {
        uint256 c = a / b;
        return c;
    }

    function sub(uint256 a, uint256 b) internal constant returns(uint256) {
        assert(b <= a);
        return a - b;
    }

    function add(uint256 a, uint256 b) internal constant returns(uint256) {
        uint256 c = a + b;
        assert(c >= a);
        return c;
    }
}
contract Precious {
    using SafeMath
    for uint256;
    mapping(address => mapping(address => uint256)) allowed;
    mapping(address => uint256) balances;
    uint256 public totalSupply;
    uint256 public decimals;
    address public owner;
    bytes32 public symbol;
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed _owner, address indexed spender, uint256 value);

    function Precious() {
        totalSupply = 90000000;
        symbol = 'PRCS';
        owner = 0x1d7e9ca8b5e39c510d544ad0513b77bcfb04f281;
        balances[owner] = totalSupply;
        decimals = 0;
    }

    function balanceOf(address _owner) constant returns(uint256 balance) {
        return balances[_owner];
    }

    function allowance(address _owner, address _spender) constant returns(uint256 remaining) {
        return allowed[_owner][_spender];
    }

    function transfer(address _to, uint256 _value) returns(bool) {
        balances[msg.sender] = balances[msg.sender].sub(_value);
        balances[_to] = balances[_to].add(_value);
        Transfer(msg.sender, _to, _value);
        return true;
    }

    function transferFrom(address _from, address _to, uint256 _value) returns(bool) {
        var _allowance = allowed[_from][msg.sender];
        balances[_to] = balances[_to].add(_value);
        balances[_from] = balances[_from].sub(_value);
        allowed[_from][msg.sender] = _allowance.sub(_value);
        Transfer(_from, _to, _value);
        return true;
    }

    function approve(address _spender, uint256 _value) returns(bool) {
        require((_value == 0) || (allowed[msg.sender][_spender] == 0));
        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }

    function() {
        revert();
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"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":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[],"payable":false,"type":"constructor"},{"payable":false,"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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

0x606060405236156100965763ffffffff7c0100000000000000000000000000000000000000000000000000000000600035041663095ea7b381146100ac57806318160ddd146100df57806323b872dd14610101578063313ce5671461013a57806370a082311461015c5780638da5cb5b1461018a57806395d89b41146101b6578063a9059cbb146101d8578063dd62ed3e1461020b575b341561009e57fe5b6100aa5b60006000fd5b565b005b34156100b457fe5b6100cb600160a060020a036004351660243561023f565b604080519115158252519081900360200190f35b34156100e757fe5b6100ef6102e0565b60408051918252519081900360200190f35b341561010957fe5b6100cb600160a060020a03600435811690602435166044356102e6565b604080519115158252519081900360200190f35b341561014257fe5b6100ef6103f7565b60408051918252519081900360200190f35b341561016457fe5b6100ef600160a060020a03600435166103fd565b60408051918252519081900360200190f35b341561019257fe5b61019a61041c565b60408051600160a060020a039092168252519081900360200190f35b34156101be57fe5b6100ef61042b565b60408051918252519081900360200190f35b34156101e057fe5b6100cb600160a060020a0360043516602435610431565b604080519115158252519081900360200190f35b341561021357fe5b6100ef600160a060020a03600435811690602435166104f1565b60408051918252519081900360200190f35b600081158061026f5750600160a060020a0333811660009081526020818152604080832093871683529290522054155b151561027b5760006000fd5b600160a060020a0333811660008181526020818152604080832094881680845294825291829020869055815186815291517f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b9259281900390910190a35060015b92915050565b60025481565b600160a060020a0380841660009081526020818152604080832033851684528252808320549386168352600190915281205490919061032b908463ffffffff61051c16565b600160a060020a038086166000908152600160205260408082209390935590871681522054610360908463ffffffff61053616565b600160a060020a038616600090815260016020526040902055610389818463ffffffff61053616565b600160a060020a03808716600081815260208181526040808320338616845282529182902094909455805187815290519288169391927fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef929181900390910190a3600191505b509392505050565b60035481565b600160a060020a0381166000908152600160205260409020545b919050565b600454600160a060020a031681565b60055481565b600160a060020a03331660009081526001602052604081205461045a908363ffffffff61053616565b600160a060020a03338116600090815260016020526040808220939093559085168152205461048f908363ffffffff61051c16565b600160a060020a038085166000818152600160209081526040918290209490945580518681529051919333909316927fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef92918290030190a35060015b92915050565b600160a060020a03808316600090815260208181526040808320938516835292905220545b92915050565b60008282018381101561052b57fe5b8091505b5092915050565b60008282111561054257fe5b508082035b929150505600a165627a7a723058205ec201d96de5fd77d83be6765f899c6ff9ea3798153080da22ed8a440a9346270029

bzzr://5ec201d96de5fd77d83be6765f899c6ff9ea3798153080da22ed8a440a934627