ETH Price: $3,487.34 (+0.92%)

Contract

0x51e7359d008a85A021da36370D78b594079a67b1
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Token Holdings

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Transfer88847632019-11-06 15:58:251875 days ago1573055905IN
0x51e7359d...4079a67b1
0 ETH0.0002505111
Transfer88847562019-11-06 15:56:321875 days ago1573055792IN
0x51e7359d...4079a67b1
0 ETH0.0004155111
Transfer88847222019-11-06 15:50:231875 days ago1573055423IN
0x51e7359d...4079a67b1
0 ETH0.0004155111
Transfer88847172019-11-06 15:48:001875 days ago1573055280IN
0x51e7359d...4079a67b1
0 ETH0.0004155111
Transfer88847092019-11-06 15:45:521875 days ago1573055152IN
0x51e7359d...4079a67b1
0 ETH0.0004155111
Transfer88847062019-11-06 15:44:441875 days ago1573055084IN
0x51e7359d...4079a67b1
0 ETH0.0004155111
Transfer88847022019-11-06 15:43:531875 days ago1573055033IN
0x51e7359d...4079a67b1
0 ETH0.0004155111
Transfer88846572019-11-06 15:34:371875 days ago1573054477IN
0x51e7359d...4079a67b1
0 ETH0.0004155111
Transfer88845862019-11-06 15:17:061875 days ago1573053426IN
0x51e7359d...4079a67b1
0 ETH0.0004155111
Transfer86399552019-09-28 22:22:141913 days ago1569709334IN
0x51e7359d...4079a67b1
0 ETH0.0007932521
Transfer86106482019-09-24 8:19:371918 days ago1569313177IN
0x51e7359d...4079a67b1
0 ETH0.0023042161
Transfer85219882019-09-10 12:07:361932 days ago1568117256IN
0x51e7359d...4079a67b1
0 ETH0.0008673323
Transfer85219802019-09-10 12:05:081932 days ago1568117108IN
0x51e7359d...4079a67b1
0 ETH0.0012123323
Transfer85102962019-09-08 16:13:461934 days ago1567959226IN
0x51e7359d...4079a67b1
0 ETH0.0007580420
Transfer85102512019-09-08 16:03:341934 days ago1567958614IN
0x51e7359d...4079a67b1
0 ETH0.001054220
Transfer85094382019-09-08 13:07:481934 days ago1567948068IN
0x51e7359d...4079a67b1
0 ETH0.0008324322
Transfer85091402019-09-08 11:58:181934 days ago1567943898IN
0x51e7359d...4079a67b1
0 ETH0.0007466919.734
Transfer85091052019-09-08 11:50:161934 days ago1567943416IN
0x51e7359d...4079a67b1
0 ETH0.0010414419.734
Transfer85090692019-09-08 11:42:001934 days ago1567942920IN
0x51e7359d...4079a67b1
0 ETH0.0010414419.734
Transfer85089452019-09-08 11:11:121934 days ago1567941072IN
0x51e7359d...4079a67b1
0 ETH0.0006776617.94
Transfer85089422019-09-08 11:10:341934 days ago1567941034IN
0x51e7359d...4079a67b1
0 ETH0.0009467617.94
Transfer85088532019-09-08 10:50:321934 days ago1567939832IN
0x51e7359d...4079a67b1
0 ETH0.0009456117.94
Transfer85087562019-09-08 10:33:101934 days ago1567938790IN
0x51e7359d...4079a67b1
0 ETH0.0009467617.94
Transfer85086612019-09-08 10:14:081934 days ago1567937648IN
0x51e7359d...4079a67b1
0 ETH0.0009467617.94
Transfer85085552019-09-08 9:50:181934 days ago1567936218IN
0x51e7359d...4079a67b1
0 ETH0.0008232715.6
View all transactions

Advanced mode:
Parent Transaction Hash Block
From
To
View All Internal Transactions
Loading...
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
WorldRobot

Compiler Version
v0.4.25+commit.59dbf8f1

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2018-10-17
*/

pragma solidity ^0.4.25;

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

contract WorldRobot {
    // Public variables of the token
    string public name;
    string public symbol;
    uint8 public decimals = 8;
    // 18 decimals is the strongly suggested default, avoid changing it
    uint256 public totalSupply;

    // 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 generates a public event on the blockchain that will notify clients
    event Approval(address indexed _owner, address indexed _spender, 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
     */
    constructor(
        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 returns (bool success) {
        _transfer(msg.sender, _to, _value);
        return true;
    }

    /**
     * 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;
        emit Approval(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;
    }
}

Contract Security Audit

Contract ABI

[{"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":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":[{"name":"success","type":"bool"}],"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"},{"inputs":[{"name":"initialSupply","type":"uint256"},{"name":"tokenName","type":"string"},{"name":"tokenSymbol","type":"string"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"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"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Burn","type":"event"}]

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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)

000000000000000000000000000000000000000000000000000000001dcd6500000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000A0000000000000000000000000000000000000000000000000000000000000000b576f726c6420526f626f740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003574f520000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : initialSupply (uint256): 500000000
Arg [1] : tokenName (string): World Robot
Arg [2] : tokenSymbol (string): WOR

-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 000000000000000000000000000000000000000000000000000000001dcd6500
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000A0
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000b
Arg [4] : 576f726c6420526f626f74000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 574f520000000000000000000000000000000000000000000000000000000000


Swarm Source

bzzr://0da6f5293af4c193b7b2bfc83451f65c03d8020fe350fc9dff8d8351a56e7f3d

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading...
Loading
Loading...
Loading

Validator Index Block Amount
View All Withdrawals

Transaction Hash Block Value Eth2 PubKey Valid
View All Deposits
Loading...
Loading
[ Download: CSV Export  ]

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.