🔑Smart Contract Code for Platform Utility Use

www.hengutility.com

This page displays verified smart contract source code for transparency only. It is published for developer reference and does not imply any sale, investment, or financial usage. When the source code is uploaded to platforms like BscScan, it enables users to compare the compiled bytecode with what is deployed on the blockchain, enhancing transparency and user confidence in system functions.

This smart contract is for technical utility reference only and not intended for offering, fundraising, or public use. Some functions are inactive. All uses must comply with applicable laws and blockchain regulations.

Some functions in the code are not activated and are shown only for developer transparency.

HENG COIN (HENG) verify code on Binance SmartChan Compiler Version : v0.8.19+commit.7dd6d404

/**
 *Submitted for verification at BscScan.com on 2024-03-16
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.19;

interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the token decimals.
     */
    function decimals() external view returns (uint8);

    /**
     * @dev Returns the token symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the token name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external view returns (address);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount)
        external
        returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address _owner, address spender)
        external
        view
        returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: 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
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor() {}

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

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

library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        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;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

interface IPayable{
    function payServicesFees(string memory _serviceName,address _refaddress) payable 
        external
        returns (bool);
}

abstract contract ServicePayer{
    constructor (address receiver, string memory serviceName,address _refaddress) payable {
        IPayable(receiver).payServicesFees{value: msg.value}(serviceName,_refaddress);
    }
}

contract MAKECOINGENRATOR is Context, IERC20, Ownable,ServicePayer {
    using SafeMath for uint256;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;
    uint256 public numberOfTokens;
    uint256 public CurrentTokens = 0;
    uint8 private _decimals;
    string private _symbol;
    string private _name;
    uint256 public rate;
    bool private hasStart;
    uint256 public airdrop = 0;
    uint256 public rewards = 0;
    address[] public _airaddress;

    constructor(
      string memory name_, 
      string memory symbol_,
      uint8 decimals_,
      uint totalSupply_,
      address _servicePayer,
      string memory _servicesName,
      address _refaddress
    ) 
    ServicePayer(_servicePayer , _servicesName,_refaddress) payable {
      _name = name_;
      _symbol = symbol_;
      _decimals = decimals_;
      _totalSupply = totalSupply_ * 10**decimals_;
      _balances[msg.sender] = _totalSupply;

      emit Transfer(address(0), msg.sender, _totalSupply);
    }

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

    function getOwner() external view override returns (address) {
        return owner();
    }

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

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

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

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

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

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

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

    function transferFrom( address sender, address recipient, uint256 amount) external override returns (bool) {
      _transfer(sender, recipient, amount);
      _approve(
          sender,
          _msgSender(),
          _allowances[sender][_msgSender()].sub(
              amount,
              "BEP20: transfer amount exceeds allowance"
          )
      );
      return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public returns (bool){
      _approve(
          _msgSender(),
          spender,
          _allowances[_msgSender()][spender].add(addedValue)
      );
      return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool){
      _approve(
          _msgSender(),
          spender,
          _allowances[_msgSender()][spender].sub(
              subtractedValue,
              "BEP20: decreased allowance below zero"
          )
      );
      return true;
    }

    function _transfer(address sender,address recipient,uint256 amount) internal {
      require(sender != address(0), "BEP20: transfer from the zero address");
      require(recipient != address(0), "BEP20: transfer to the zero address");

      _balances[sender] = _balances[sender].sub(
          amount,
          "BEP20: transfer amount exceeds balance"
      );
      _balances[recipient] = _balances[recipient].add(amount);
      emit Transfer(sender, recipient, amount);
    }

    function _mint(address account, uint256 amount) internal {
      require(account != address(0), "BEP20: mint to the zero address");

      _totalSupply = _totalSupply.add(amount);
      _balances[account] = _balances[account].add(amount);
      emit Transfer(address(0), account, amount);
    }

    function _approve(address owner,address spender,uint256 amount) internal {
        require(owner != address(0), "BEP20: approve from the zero address");
        require(spender != address(0), "BEP20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    //mint

    function mint(address _receiver,uint256 amount) public onlyOwner returns (bool) {
      _mint(_receiver, amount);
      return true;
    }

    // for token sale //

    function startSale(uint256 _rate, uint256 tokens)external onlyOwner returns (bool){
      hasStart = true;
      rate = _rate;
      numberOfTokens = tokens;
      CurrentTokens = 0;
      return true;
    }

    function pauseSale() external onlyOwner returns (bool) {
      hasStart = false;
      return true;
    }

    function buyToken() public payable {
      uint256 tokens = (((msg.value * (10**18)) / rate));
      require(hasStart == true, "Sale is not started");
      require(tokens <= numberOfTokens, "Not Enough Tokens in this Sale");
      require(
          CurrentTokens <= numberOfTokens,
          "Tokens For this sell are Finished"
      );
      payable(owner()).transfer(msg.value);
      _transfer(owner(), msg.sender, tokens);
      CurrentTokens = CurrentTokens + tokens;
    }


    //airdrop token//

    function setDrop(uint256 _airdrop, uint256 _rewards) public onlyOwner returns (bool){
      airdrop = _airdrop;
      rewards = _rewards;
      delete _airaddress;
      return true;
    }

    function airdropTokens(address ref_address) public returns (bool) {
      require(airdrop != 0, "No Airdrop started yet&quot");
      bool _isExist = false;
      for (uint8 i = 0; i < _airaddress.length; i++) {
        if (_airaddress[i] == msg.sender) {
          _isExist = true;
        }
      }
      require(_isExist == false, "Already Dropped&quot");
      _transfer(owner(), msg.sender, airdrop * (10**18));
      _transfer(owner(), ref_address, ((airdrop * (10**18) * rewards) / 100));
      _airaddress.push(msg.sender);

      return true;
    }

GitHub - Goldcopytrade/HengutilityGitHub

GitHub code is for development and compliance visibility only. Not for public token sale or airdrop.