Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

library SafeMath    - function add(uint a, uint b)    - function sub(uint a, uint b)    - function mul(uint a, uint b)    - function div(uint a, uint b)  contract ERC20Interface    - function totalSupply()    - function balanceOf(address tokenOwner ...    - function allowance(address tokenOwner ...    - function transfer(address to, uint to ...    - function approve(address spender, uin ...    - function transferFrom(address from, a ...  contract ApproveAndCallFallBack    - function receiveApproval(address from ...  contract Owned    - function Owned()    - function transferOwnership(address _n ...    - function acceptOwnership()  contract FreeToken is ERC20Interfa ... *    - function FreeToken()    - function totalSupply()    - function balanceOf(address tokenOwner ...    - function transfer(address to, uint to ...    - function approve(address spender, uin ...    - function transferFrom(address from, a ...    - function allowance(address tokenOwner ...    - function approveAndCall(address spend ...    - function ()    - function transferAnyERC20Token(addres ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-04-05
*/

//pragma solidity ^0.4.0;
pragma solidity ^0.4.18;

 

// ----------------------------------------------------------------------------

// 'FREE' 'Free token contract

//

// Symbol      : FREE

// Name        : FREE token

// Total supply: 10,000,000,000,000.000000000000000000

// Decimals    : 18

//

// Enjoy.

//

// Ben Bervoets, creator of coins :)

// ----------------------------------------------------------------------------

 

 

// ----------------------------------------------------------------------------

// Safe maths

// ----------------------------------------------------------------------------

library SafeMath {

    function add(uint a, uint b) internal pure returns (uint c) {

        c = a + b;

        require(c >= a);

    }

    function sub(uint a, uint b) internal pure returns (uint c) {

        require(b <= a);

        c = a - b;

    }

    function mul(uint a, uint b) internal pure returns (uint c) {

        c = a * b;

        require(a == 0 || c / a == b);

    }

    function div(uint a, uint b) internal pure returns (uint c) {

        require(b > 0);

        c = a / b;

    }

}

 

 

// ----------------------------------------------------------------------------

// ERC Token Standard #20 Interface

// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md

// ----------------------------------------------------------------------------

contract ERC20Interface {

    function totalSupply() public constant returns (uint);

    function balanceOf(address tokenOwner) public constant returns (uint balance);

    function allowance(address tokenOwner, address spender) public constant returns (uint remaining);

    function transfer(address to, uint tokens) public returns (bool success);

    function approve(address spender, uint tokens) public returns (bool success);

    function transferFrom(address from, address to, uint tokens) public returns (bool success);

 

    event Transfer(address indexed from, address indexed to, uint tokens);

    event Approval(address indexed tokenOwner, address indexed spender, uint tokens);

}

 

 

// ----------------------------------------------------------------------------

// Contract function to receive approval and execute function in one call

//

// 

// ----------------------------------------------------------------------------

contract ApproveAndCallFallBack {

    function receiveApproval(address from, uint256 tokens, address token, bytes data) public;

}

 

 

// ----------------------------------------------------------------------------

// Owned contract

// ----------------------------------------------------------------------------

contract Owned {

    address public owner;

    address public newOwner;

 

    event OwnershipTransferred(address indexed _from, address indexed _to);

 

    function Owned() public {

        owner = msg.sender;

    }

 

    modifier onlyOwner {

        require(msg.sender == owner);

        _;

    }

 

    function transferOwnership(address _newOwner) public onlyOwner {

        newOwner = _newOwner;

    }

    function acceptOwnership() public {

        require(msg.sender == newOwner);

        OwnershipTransferred(owner, newOwner);

        owner = newOwner;

        newOwner = address(0);

    }

}

 

 

// ----------------------------------------------------------------------------

// ERC20 Token, with the addition of symbol, name and decimals and an

// initial fixed supply

// ----------------------------------------------------------------------------

contract FreeToken is ERC20Interface, Owned {

    using SafeMath for uint;

 

    string public symbol;

    string public  name;

    uint8 public decimals;

    uint public _totalSupply;

 

    mapping(address => uint) balances;

    mapping(address => mapping(address => uint)) allowed;

 

 

    // ------------------------------------------------------------------------

    // Constructor

    // ------------------------------------------------------------------------

    function FreeToken() public {

        symbol = "FREE";

        name = "Free Coin";

        decimals = 18;

        _totalSupply = 10000000000000 * 10**uint(decimals);

        balances[owner] = _totalSupply;

        Transfer(address(0), owner, _totalSupply);

    }

 

 

    // ------------------------------------------------------------------------

    // Total supply

    // ------------------------------------------------------------------------

    function totalSupply() public constant returns (uint) {

        return _totalSupply  - balances[address(0)];

    }

 

 

    // ------------------------------------------------------------------------

    // Get the token balance for account `tokenOwner`

    // ------------------------------------------------------------------------

    function balanceOf(address tokenOwner) public constant returns (uint balance) {

        return balances[tokenOwner];

    }

 

 

    // ------------------------------------------------------------------------

    // Transfer the balance from token owner's account to `to` account

    // - Owner's account must have sufficient balance to transfer

    // - 0 value transfers are allowed

    // ------------------------------------------------------------------------

    function transfer(address to, uint tokens) public returns (bool success) {

        balances[msg.sender] = balances[msg.sender].sub(tokens);

        balances[to] = balances[to].add(tokens);

        Transfer(msg.sender, to, tokens);

        return true;

    }

 

 

    // ------------------------------------------------------------------------

    // Token owner can approve for `spender` to transferFrom(...) `tokens`

    // from the token owner's account

    //

    // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md

    // recommends that there are no checks for the approval double-spend attack

    // as this should be implemented in user interfaces

    // ------------------------------------------------------------------------

    function approve(address spender, uint tokens) public returns (bool success) {

        allowed[msg.sender][spender] = tokens;

        Approval(msg.sender, spender, tokens);

        return true;

    }

 

 

    // ------------------------------------------------------------------------

    // Transfer `tokens` from the `from` account to the `to` account

    //

    // The calling account must already have sufficient tokens approve(...)-d

    // for spending from the `from` account and

    // - From account must have sufficient balance to transfer

    // - Spender must have sufficient allowance to transfer

    // - 0 value transfers are allowed

    // ------------------------------------------------------------------------

    function transferFrom(address from, address to, uint tokens) public returns (bool success) {

        balances[from] = balances[from].sub(tokens);

        allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens);

        balances[to] = balances[to].add(tokens);

        Transfer(from, to, tokens);

        return true;

    }

 

 

    // ------------------------------------------------------------------------

    // Returns the amount of tokens approved by the owner that can be

    // transferred to the spender's account

    // ------------------------------------------------------------------------

    function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {

        return allowed[tokenOwner][spender];

    }

 

 

    // ------------------------------------------------------------------------

    // Token owner can approve for `spender` to transferFrom(...) `tokens`

    // from the token owner's account. The `spender` contract function

    // `receiveApproval(...)` is then executed

    // ------------------------------------------------------------------------

    function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {

        allowed[msg.sender][spender] = tokens;

        Approval(msg.sender, spender, tokens);

        ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);

        return true;

    }

 

 

    // ------------------------------------------------------------------------

    // Don't accept ETH

    // ------------------------------------------------------------------------

    function () public payable {

        revert();

    }

 

 

    // ------------------------------------------------------------------------

    // Owner can transfer out any accidentally sent ERC20 tokens

    // ------------------------------------------------------------------------

    function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {

        return ERC20Interface(tokenAddress).transfer(owner, tokens);

    }

}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"spender","type":"address"},{"name":"tokens","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"from","type":"address"},{"name":"to","type":"address"},{"name":"tokens","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"_totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"tokenOwner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"acceptOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"tokens","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"spender","type":"address"},{"name":"tokens","type":"uint256"},{"name":"data","type":"bytes"}],"name":"approveAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"newOwner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"tokenAddress","type":"address"},{"name":"tokens","type":"uint256"}],"name":"transferAnyERC20Token","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"tokenOwner","type":"address"},{"name":"spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"tokens","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"tokenOwner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"tokens","type":"uint256"}],"name":"Approval","type":"event"}]

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

bzzr://d8a68653e91ea6d50185e553eedb85363f4a39dadb419556cc8d5dc0361c449c