Cryo Explorer Ethereum Mainnet

Address Contract Partially Verified

Address 0x1aF4F195A8AAa7FFd752C28A13B719b84056f0d6
Balance 0 ETH
Nonce 1
Code Size 8100 bytes
Indexed Transactions 0
External Etherscan · Sourcify

Contract Bytecode

8100 bytes
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Verified Source Code Partial Match

Compiler: v0.6.6+commit.6c089d02 EVM: istanbul Optimization: No
NTPToken.sol 267 lines
pragma solidity ^0.6.0;

abstract contract Context {
  function _msgSender() internal view virtual returns (address payable) {
    return msg.sender;
  }

  function _msgData() internal view virtual returns (bytes memory) {
    this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
    return msg.data;
  }
}

library SafeMath {
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a, "SafeMath: addition overflow");
    return c;
  }
  
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    return sub(a, b, "SafeMath: subtraction overflow");
  }
  
  function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b <= a, errorMessage);
    uint256 c = a - b;
    return c;
  }
  
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    require(c / a == b, "SafeMath: multiplication overflow");
    return c;
  }
  
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    return div(a, b, "SafeMath: division by zero");
  }
  
  function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b > 0, errorMessage);
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }
  
  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    return mod(a, b, "SafeMath: modulo by zero");
  }
  
  function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b != 0, errorMessage);
    return a % b;
  }
}

contract Pausable is Context {
  event Paused(address account);
  event Unpaused(address account);
  bool private _paused;
  constructor () internal {
    _paused = false;
  }
  
  function paused() public view returns (bool) {
    return _paused;
  }
  
  modifier whenNotPaused() {
    require(!_paused, "Pausable: paused");
    _;
  }
  
  modifier whenPaused() {
    require(_paused, "Pausable: not paused");
    _;
  }
  
  function _pause() internal virtual whenNotPaused {
    _paused = true;
    emit Paused(_msgSender());
  }
  
  function _unpause() internal virtual whenPaused {
    _paused = false;
    emit Unpaused(_msgSender());
  }
}



interface IERC20 {
  function totalSupply() external view returns (uint256);
  function balanceOf(address account) external view returns (uint256);
  function transfer(address recipient, uint256 amount) external returns (bool);
  function allowance(address owner, address spender) external view returns (uint256);
  function approve(address spender, uint256 amount) external returns (bool);
  function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract Ownable is Context {
  address private _owner;
  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
  
  constructor () internal {
    address msgSender = _msgSender();
    _owner = msgSender;
    emit OwnershipTransferred(address(0), msgSender);
  }
  
  function owner() public view returns (address) {
    return _owner;
  }
  
  modifier onlyOwner() {
    require(_owner == _msgSender(), "Ownable: caller is not the owner");
    _;
  }
  
  function transferOwnership(address newOwner) public virtual onlyOwner {
    require(newOwner != address(0), "Ownable: new owner is the zero address");
    emit OwnershipTransferred(_owner, newOwner);
    _owner = newOwner;
  }
}

contract ERC20 is Context, IERC20, Pausable,Ownable {
  using SafeMath for uint256;
  mapping (address => bool) public Frozen;
  mapping (address => uint256) private _balances;
  mapping (address => mapping (address => uint256)) private _allowances;
  event Transfer(address indexed from, address indexed to, uint value);
  event Frozened(address indexed target);
  event DeleteFromFrozen(address indexed target);
  uint256 private _totalSupply;
  string private _name;
  string private _symbol;
  uint8 private _decimals;

  constructor (string memory name, string memory symbol) public {
    _name = name;
    _symbol = symbol;
    _decimals = 18;
  }

  function Frozening(address _addr) onlyOwner() public{
    Frozen[_addr] = true;
    Frozened(_addr);
  }

  function deleteFromFrozen(address _addr) onlyOwner() public{
    Frozen[_addr] = false;
    DeleteFromFrozen(_addr);
  }

  function name() public view returns (string memory) {
    return _name;
  }

  function symbol() public view returns (string memory) {
    return _symbol;
  }

  function decimals() public view returns (uint8) {
    return _decimals;
  }

  function totalSupply() public view override returns (uint256) {
    return _totalSupply;
  }

  function balanceOf(address account) public view override returns (uint256) {
    return _balances[account];
  }

  function transfer(address recipient, uint256 amount) public virtual whenNotPaused() override returns (bool) {
    _transfer(_msgSender(), recipient, amount);
    return true;
  }

  function allowance(address owner, address spender) public view virtual override returns (uint256) {
    return _allowances[owner][spender];
  }

  function approve(address spender, uint256 amount) public virtual override returns (bool) {
    _approve(_msgSender(), spender, amount);
    return true;
  }

  function transferFrom(address sender, address recipient, uint256 amount) public virtual whenNotPaused() override returns (bool) {
    _transfer(sender, recipient, amount);
    _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
    return true;
  }

  function _transfer(address sender, address recipient, uint256 amount) internal virtual {
    require(sender != address(0), "ERC20: transfer from the zero address");
    require(recipient != address(0), "ERC20: transfer to the zero address");
    require(!Frozen[sender],"You are Frozen");
    require(!Frozen[recipient],"recipient are Frozen");
    _beforeTokenTransfer(sender, recipient, amount);
    _balances[sender] = _balances[sender].sub(amount, "transfer amount exceeds balance");
    _balances[recipient] = _balances[recipient].add(amount);
    emit Transfer(sender, recipient, amount);
  }

  function _mint(address account, uint256 amount) internal virtual {
    require(account != address(0), "ERC20: mint to the zero address");
    _beforeTokenTransfer(address(0), account, amount);
    _totalSupply = _totalSupply.add(amount);
    _balances[account] = _balances[account].add(amount);
    emit Transfer(address(0), account, amount);
  }

  function _burn(address account, uint256 amount) internal virtual {
    require(account != address(0), "ERC20: burn from the zero address");
    _beforeTokenTransfer(account, address(0), amount);
    _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
    _totalSupply = _totalSupply.sub(amount);
    emit Transfer(account, address(0), amount);
  }

  function _approve(address owner, address spender, uint256 amount) internal virtual {
    require(owner != address(0), "ERC20: approve from the zero address");
    require(spender != address(0), "ERC20: approve to the zero address");
    _allowances[owner][spender] = amount;
    emit Approval(owner, spender, amount);
  }

  function _setupDecimals(uint8 decimals_) internal {
    _decimals = decimals_;
  }

  function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}

abstract contract ERC20Burnable is Context, ERC20 {
  function burn(uint256 amount) public virtual {
    _burn(_msgSender(), amount);
  }

  function burnFrom(address account, uint256 amount) public virtual {
    uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance");
    _approve(account, _msgSender(), decreasedAllowance);
    _burn(account, amount);
  }
}

contract NTPToken is ERC20,ERC20Burnable {
  constructor() public ERC20("NFT Track Protocol", "NTP"){
    _mint(msg.sender, 1000000000 * (10 ** 18));
  }

  function pause() onlyOwner() public {
    _pause();
  }

  function unpause() onlyOwner() public {
    _unpause();
  }
}

Read Contract

Frozen 0x8a5c4736 → bool
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint8
name 0x06fdde03 → string
owner 0x8da5cb5b → address
paused 0x5c975abb → bool
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256

Write Contract 10 functions

These functions modify contract state and require a wallet transaction to execute.

Frozening 0x0a02b311
address _addr
approve 0x095ea7b3
address spender
uint256 amount
returns: bool
burn 0x42966c68
uint256 amount
burnFrom 0x79cc6790
address account
uint256 amount
deleteFromFrozen 0xf98783fd
address _addr
pause 0x8456cb59
No parameters
transfer 0xa9059cbb
address recipient
uint256 amount
returns: bool
transferFrom 0x23b872dd
address sender
address recipient
uint256 amount
returns: bool
transferOwnership 0xf2fde38b
address newOwner
unpause 0x3f4ba83a
No parameters

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