ERC-20
Protocol
Overview
Max Total Supply
4,997,891,952 UTNP
Holders
12,229 (0.00%)
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
UTNP
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 2018-01-13 */ pragma solidity ^0.4.13; /** * @title UTN-P ERC20 token by Universa Blockchain. * * @dev Based on OpenZeppelin framework. * * Features: * * * ERC20 compatibility, with token details as properties. * * total supply: 4997891952 (initially given to the contract author). * * decimals: 18 * * BurnableToken: some addresses are allowed to burn tokens. * * “third-party smart contract trading protection”: transferFrom/approve/allowance methods are present but do nothing. * * TimeLock: implemented externally (in TokenTimelock contract), some tokens are time-locked for 3 months. * * Bulk send: implemented externally (in BulkSender contract), some tokens are time-locked for 3 months. */ library SafeMath { 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; } 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; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } 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; } } contract ERC20Basic { uint256 public totalSupply; 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); } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; /** * @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 BurnableToken is BasicToken { event Burn(address indexed burner, uint256 value); /** * @dev Burns a specific amount of tokens. * @param _value The amount of token to be burned. */ function burn(uint256 _value) public { require(_value <= balances[msg.sender]); // no need to require value <= totalSupply, since that would imply the // sender's balance is greater than the totalSupply, which *should* be an assertion failure address burner = msg.sender; balances[burner] = balances[burner].sub(_value); totalSupply = totalSupply.sub(_value); Burn(burner, _value); } } 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); } contract UTNP is BasicToken, BurnableToken, ERC20, Ownable { string public constant name = "UTN-P: Universa Token"; string public constant symbol = "UTNP"; uint8 public constant decimals = 18; string public constant version = "1.0"; uint256 constant INITIAL_SUPPLY_UTN = 4997891952; /// @dev whether an address is permitted to perform burn operations. mapping(address => bool) public isBurner; /** * @dev Constructor that: * * gives all of existing tokens to the message sender; * * initializes the burners (also adding the message sender); */ function UTNP() public { totalSupply = INITIAL_SUPPLY_UTN * (10 ** uint256(decimals)); balances[msg.sender] = totalSupply; isBurner[msg.sender] = true; } /** * @dev Standard method to comply with ERC20 interface; * prevents some Ethereum-contract-initiated operations. */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { return false; } /** * @dev Standard method to comply with ERC20 interface; * prevents some Ethereum-contract-initiated operations. */ function approve(address _spender, uint256 _value) public returns (bool) { return false; } /** * @dev Standard method to comply with ERC20 interface; * prevents some Ethereum-contract-initiated operations. */ function allowance(address _owner, address _spender) public view returns (uint256) { return 0; } /** * @dev Grant or remove burn permissions. Only owner can do that! */ function grantBurner(address _burner, bool _value) public onlyOwner { isBurner[_burner] = _value; } /** * @dev Throws if called by any account other than the burner. */ modifier onlyBurner() { require(isBurner[msg.sender]); _; } /** * @dev Burns a specific amount of tokens. * Only an address listed in `isBurner` can do this. * @param _value The amount of token to be burned. */ function burn(uint256 _value) public onlyBurner { super.burn(_value); } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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Contract Creation Code
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Deployed Bytecode
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Swarm Source
bzzr://664588c96d34e5a74eaad24b1388f142ca884acdcabe989c3f0cfe99ef788900
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