ERC-20
Overview
Max Total Supply
2,000,000,000,000,000,000
Holders
8,545
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 0 Decimals)
Balance
6,600,000,000Value
$0.00Loading...
Loading
Loading...
Loading
Loading...
Loading
# | Exchange | Pair | Price | 24H Volume | % Volume |
---|
Contract Name:
TCoin
Compiler Version
v0.4.18+commit.9cf6e910
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2018-01-27 */ pragma solidity ^0.4.18; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ function Ownable() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); OwnershipTransferred(owner, newOwner); owner = newOwner; } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); // SafeMath.sub will throw if there is not enough balance. balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256 balance) { return balances[_owner]; } } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } /** * @title TCoin Token. */ contract TCoin is StandardToken, Ownable { string public NAME = "TRAVEL"; string public SYMBOL = "TRAVEL"; uint public DECIMALS = 8; string public VERSION = "1.0"; function TCoin() public { totalSupply_ = 20000000000 * 10 ** 8; balances[owner] = totalSupply_; } function () public { revert(); } }
Contract Security Audit
- 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,"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":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"DECIMALS","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"NAME","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":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"SYMBOL","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"VERSION","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":false,"stateMutability":"nonpayable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","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":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]
Contract Creation Code
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
Deployed Bytecode
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
Swarm Source
bzzr://43ba03f3cb05d877cbfce51f869a9ca6b26fa98b2fbc7d9fdd1663bc449ccacb
Loading...
Loading
Loading...
Loading
[ Download: CSV Export ]
[ Download: CSV Export ]
A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.