Contract

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

• interface tokenRecipient function re ...
•  contract OMEC *
•    - function omec(
•    - function _transfer(address _from, add ...
•    - function transfer(address _to, uint25 ...
•    - function transferFrom(address _from, ...
•    - function approve(address _spender, ui ...
•    - function approveAndCall(address _spen ...
•    - function burn(uint256 _value)
•    - function burnFrom(address _from, uint ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-08-03
*/

pragma solidity ^0.4.16;

interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; }

contract OMEC{
    // Public variables of the token
    string public name='万能链';
    string public symbol='OMEC';
    uint8 public decimals = 18;
    // 18 decimals is the strongly suggested default, avoid changing it
    uint256 public totalSupply=158000000000000000000000000;

    // This creates an array with all balances
    mapping (address => uint256) public balanceOf;
    mapping (address => mapping (address => uint256)) public allowance;

    // This generates a public event on the blockchain that will notify clients
    event Transfer(address indexed from, address indexed to, uint256 value);

    // This notifies clients about the amount burnt
    event Burn(address indexed from, uint256 value);

    /**
     * Constructor function
     *
     * Initializes contract with initial supply tokens to the creator of the contract
     */
    function omec(
        uint256 initialSupply,
        string tokenName,
        string tokenSymbol
    ) public {
        totalSupply = initialSupply * 10 ** uint256(decimals);  // Update total supply with the decimal amount
        balanceOf[msg.sender] = totalSupply;                // Give the creator all initial tokens
        name = tokenName;                                   // Set the name for display purposes
        symbol = tokenSymbol;                               // Set the symbol for display purposes
    }

    /**
     * Internal transfer, only can be called by this contract
     */
    function _transfer(address _from, address _to, uint _value) internal {
        // Prevent transfer to 0x0 address. Use burn() instead
        require(_to != 0x0);
        // Check if the sender has enough
        require(balanceOf[_from] >= _value);
        // Check for overflows
        require(balanceOf[_to] + _value >= balanceOf[_to]);
        // Save this for an assertion in the future
        uint previousBalances = balanceOf[_from] + balanceOf[_to];
        // Subtract from the sender
        balanceOf[_from] -= _value;
        // Add the same to the recipient
        balanceOf[_to] += _value;
        emit Transfer(_from, _to, _value);
        // Asserts are used to use static analysis to find bugs in your code. They should never fail
        assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
    }

    /**
     * Transfer tokens
     *
     * Send `_value` tokens to `_to` from your account
     *
     * @param _to The address of the recipient
     * @param _value the amount to send
     */
    function transfer(address _to, uint256 _value) public {
        _transfer(msg.sender, _to, _value);
    }

    /**
     * Transfer tokens from other address
     *
     * Send `_value` tokens to `_to` on behalf of `_from`
     *
     * @param _from The address of the sender
     * @param _to The address of the recipient
     * @param _value the amount to send
     */
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
        require(_value <= allowance[_from][msg.sender]);     // Check allowance
        allowance[_from][msg.sender] -= _value;
        _transfer(_from, _to, _value);
        return true;
    }

    /**
     * Set allowance for other address
     *
     * Allows `_spender` to spend no more than `_value` tokens on your behalf
     *
     * @param _spender The address authorized to spend
     * @param _value the max amount they can spend
     */
    function approve(address _spender, uint256 _value) public
        returns (bool success) {
        allowance[msg.sender][_spender] = _value;
        return true;
    }

    /**
     * Set allowance for other address and notify
     *
     * Allows `_spender` to spend no more than `_value` tokens on your behalf, and then ping the contract about it
     *
     * @param _spender The address authorized to spend
     * @param _value the max amount they can spend
     * @param _extraData some extra information to send to the approved contract
     */
    function approveAndCall(address _spender, uint256 _value, bytes _extraData)
        public
        returns (bool success) {
        tokenRecipient spender = tokenRecipient(_spender);
        if (approve(_spender, _value)) {
            spender.receiveApproval(msg.sender, _value, this, _extraData);
            return true;
        }
    }

    /**
     * Destroy tokens
     *
     * Remove `_value` tokens from the system irreversibly
     *
     * @param _value the amount of money to burn
     */
    function burn(uint256 _value) public returns (bool success) {
        require(balanceOf[msg.sender] >= _value);   // Check if the sender has enough
        balanceOf[msg.sender] -= _value;            // Subtract from the sender
        totalSupply -= _value;                      // Updates totalSupply
        emit Burn(msg.sender, _value);
        return true;
    }

    /**
     * Destroy tokens from other account
     *
     * Remove `_value` tokens from the system irreversibly on behalf of `_from`.
     *
     * @param _from the address of the sender
     * @param _value the amount of money to burn
     */
    function burnFrom(address _from, uint256 _value) public returns (bool success) {
        require(balanceOf[_from] >= _value);                // Check if the targeted balance is enough
        require(_value <= allowance[_from][msg.sender]);    // Check allowance
        balanceOf[_from] -= _value;                         // Subtract from the targeted balance
        allowance[_from][msg.sender] -= _value;             // Subtract from the sender's allowance
        totalSupply -= _value;                              // Update totalSupply
        emit Burn(_from, _value);
        return true;
    }
}

• 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":"_value","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":"_value","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":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"burn","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"initialSupply","type":"uint256"},{"name":"tokenName","type":"string"},{"name":"tokenSymbol","type":"string"}],"name":"omec","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_value","type":"uint256"}],"name":"burnFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","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":"_value","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"},{"name":"_extraData","type":"bytes"}],"name":"approveAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"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":"from","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Burn","type":"event"}]

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

bzzr://ab0c3842e4919cba37a4cca35e38d4b5dd1dfc4bcb509634b4af7add38d2fff1