ETH Price: $2,454.90 (+1.01%)

Transaction Decoder

Block:
9582351 at Mar-01-2020 01:59:13 AM +UTC
Transaction Fee:
0.00031181535 ETH $0.77
Gas Used:
188,979 Gas / 1.65 Gwei

Emitted Events:

157 DABANKING.Transfer( from=[Sender] 0xf72209322023938663ec976525f14250f5e17d2c, to=[Receiver] 0x75ac71fe06b1ea8d403ccbc39e600c9acebc6cde, value=40000000000000000000 )
158 DABANKING.Approval( owner=[Sender] 0xf72209322023938663ec976525f14250f5e17d2c, spender=[Receiver] 0x75ac71fe06b1ea8d403ccbc39e600c9acebc6cde, value=99743743000000000000000000 )
159 DABANKING.Transfer( from=[Receiver] 0x75ac71fe06b1ea8d403ccbc39e600c9acebc6cde, to=0xE81b7e9611936547d18540FbE4e53b104EcC44d0, value=428260869565217391 )
160 DABANKING.Transfer( from=[Receiver] 0x75ac71fe06b1ea8d403ccbc39e600c9acebc6cde, to=ContractNo1, value=856521739130434782 )
161 0xe81b7e9611936547d18540fbe4e53b104ecc44d0.0x3f4bf951e672984be04efab55a20b42d23bebd023eddb58688af3ebc0b4e709b( 0x3f4bf951e672984be04efab55a20b42d23bebd023eddb58688af3ebc0b4e709b, 0x0000000000000000000000000000000000000000000000000000000000000015, 000000000000000000000000f72209322023938663ec976525f14250f5e17d2c, 000000000000000000000000000000000000000000000000000000000001b934, 0000000000000000000000000000000000000000000000000000000000000080, 0000000000000000000000000000000000000000000000000000000000000001, 000000000000000000000000000000000000000000000000000000000000000b, 6c75636b794e756d626572000000000000000000000000000000000000000000 )
162 DABANKING.Transfer( from=[Receiver] 0x75ac71fe06b1ea8d403ccbc39e600c9acebc6cde, to=[Sender] 0xf72209322023938663ec976525f14250f5e17d2c, value=84367391304347826086 )
163 0x75ac71fe06b1ea8d403ccbc39e600c9acebc6cde.0xe260bb0cdf58af341d75a45558e03a7d5ed5b9d61f99704337af3c9b2a0a0e39( 0xe260bb0cdf58af341d75a45558e03a7d5ed5b9d61f99704337af3c9b2a0a0e39, 0x000000000000000000000000f72209322023938663ec976525f14250f5e17d2c, 0x0000000000000000000000000000000000000000000000022b1c8c1227a00000, 0x000000000000000000000000000000000000000000000000000000000000002e, 0000000000000000000000000000000000000000000000000000000000000001, 000000000000000000000000000000000000000000000000000000000000002e, 0000000000000000000000000000000000000000000000000000000000000022, 000000000000000000000000000000000000000000000002700c4424d3a437a6, 00000000000000000000000000000000000000000000000492d52f64ca0837a6 )

Account State Difference:

  Address   Before After State Difference Code
(Spark Pool)
68.218249191490688427 Eth68.218561006840688427 Eth0.00031181535
0x5E7Ebea6...14f1d0aae
0x75aC71fE...aCEBC6CDE
0xE81b7e96...04EcC44d0
0xF7220932...0f5e17d2C
0.049857596087557387 Eth
Nonce: 9549
0.049545780737557387 Eth
Nonce: 9550
0.00031181535

Execution Trace

0x75ac71fe06b1ea8d403ccbc39e600c9acebc6cde.40e800d8( )
  • DABANKING.allowance( owner=0xF72209322023938663Ec976525F14250f5e17d2C, spender=0x75aC71fE06b1eA8d403CcBC39e600c9aCEBC6CDE ) => ( 99743783000000000000000000 )
  • DABANKING.transferFrom( from=0xF72209322023938663Ec976525F14250f5e17d2C, to=0x75aC71fE06b1eA8d403CcBC39e600c9aCEBC6CDE, value=40000000000000000000 ) => ( True )
  • DABANKING.transfer( to=0xE81b7e9611936547d18540FbE4e53b104EcC44d0, value=428260869565217391 ) => ( True )
  • DABANKING.transfer( to=0x247B398eCd5Fa511c0220e224274Ae3351Ee655d, value=856521739130434782 ) => ( True )
  • 0xe81b7e9611936547d18540fbe4e53b104ecc44d0.7d8fe32e( )
  • DABANKING.transfer( to=0xF72209322023938663Ec976525F14250f5e17d2C, value=84367391304347826086 ) => ( True )
    File 1 of 2: DABANKING
    pragma solidity 0.4.25;
    
    /**
     * @title ERC20 interface
     * @dev see https://eips.ethereum.org/EIPS/eip-20
     */
    contract IERC20 {
        function transfer(address to, uint256 value) public returns (bool);
    
        function approve(address spender, uint256 value) public returns (bool);
    
        function transferFrom(address from, address to, uint256 value) public returns (bool);
    
        function balanceOf(address who) public view returns (uint256);
    
        function allowance(address owner, address spender) public view returns (uint256);
    
        event Transfer(address indexed from, address indexed to, uint256 value);
    
        event Approval(address indexed owner, address indexed spender, uint256 value);
    }
    
    /**
     * @title SafeMath
     * @dev Unsigned math operations with safety checks that revert on error.
     */
    library SafeMath {
      /**
       * @dev Multiplies two unsigned integers, reverts on 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-solidity/pull/522
        if (a == 0) {
          return 0;
        }
    
        uint256 c = a * b;
        require(c / a == b);
    
        return c;
      }
    
      /**
       * @dev Integer division of two unsigned integers truncating the quotient, reverts on division by zero.
       */
      function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    
        return c;
      }
    
      /**
       * @dev Subtracts two unsigned integers, reverts on overflow (i.e. if subtrahend is greater than minuend).
       */
      function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a);
        uint256 c = a - b;
    
        return c;
      }
    
      /**
       * @dev Adds two unsigned integers, reverts on overflow.
       */
      function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a);
    
        return c;
      }
    
      /**
       * @dev Divides two unsigned integers and returns the remainder (unsigned integer modulo),
       * reverts when dividing by zero.
       */
      function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0);
        return a % b;
      }
    }
    
    /**
     * @title Standard ERC20 token
     *
     * @dev Implementation of the basic standard token.
     * https://eips.ethereum.org/EIPS/eip-20
     * Originally based on code by FirstBlood:
     * https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
     *
     * This implementation emits additional Approval events, allowing applications to reconstruct the allowance status for
     * all accounts just by listening to said events. Note that this isn't required by the specification, and other
     * compliant implementations may not do it.
     */
    contract ERC20 is IERC20 {
        using SafeMath for uint256;
    
        mapping (address => uint256) internal _balances;
    
        mapping (address => mapping (address => uint256)) private _allowed;
    
        /**
         * @dev Gets the balance of the specified address.
         * @param owner The address to query the balance of.
         * @return A uint256 representing the amount owned by the passed adfunction transferdress.
         */
        function balanceOf(address owner) public view returns (uint256) {
            return _balances[owner];
        }
    
        /**
         * @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 Transfer token to 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) {
            _transfer(msg.sender, 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) {
            _approve(msg.sender, spender, value);
            return true;
        }
    
        /**
         * @dev Transfer tokens from one address to another.
         * Note that while this function emits an Approval event, this is not required as per the specification,
         * and other compliant implementations may not emit the event.
         * @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) {
            _transfer(from, to, value);
            _approve(from, msg.sender, _allowed[from][msg.sender].sub(value));
            return true;
        }
    
        /**
         * @dev Increase the amount of tokens that an owner allowed to a spender.
         * approve should be called when _allowed[msg.sender][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
         * Emits an Approval event.
         * @param spender The address which will spend the funds.
         * @param addedValue The amount of tokens to increase the allowance by.
         */
        function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
            _approve(msg.sender, spender, _allowed[msg.sender][spender].add(addedValue));
            return true;
        }
    
        /**
         * @dev Decrease the amount of tokens that an owner allowed to a spender.
         * approve should be called when _allowed[msg.sender][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
         * Emits an Approval event.
         * @param spender The address which will spend the funds.
         * @param subtractedValue The amount of tokens to decrease the allowance by.
         */
        function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
            _approve(msg.sender, spender, _allowed[msg.sender][spender].sub(subtractedValue));
            return true;
        }
    
        /**
         * @dev Transfer token for a specified addresses.
         * @param from The address to transfer from.
         * @param to The address to transfer to.
         * @param value The amount to be transferred.
         */
        function _transfer(address from, address to, uint256 value) internal {
            require(to != address(0));
    
            _balances[from] = _balances[from].sub(value);
            _balances[to] = _balances[to].add(value);
            emit Transfer(from, to, value);
        }
    
        /**
         * @dev Approve an address to spend another addresses' tokens.
         * @param owner The address that owns the tokens.
         * @param spender The address that will spend the tokens.
         * @param value The number of tokens that can be spent.
         */
        function _approve(address owner, address spender, uint256 value) internal {
            require(spender != address(0));
            require(owner != address(0));
    
            _allowed[owner][spender] = value;
            emit Approval(owner, spender, value);
        }
    
    }
    
    contract DABANKING is ERC20 {
      string public constant name = 'DABANKING';
      string public constant symbol = 'DAB';
      uint8 public constant decimals = 18;
      uint256 public constant totalSupply = (200 * 1e6) * (10 ** uint256(decimals));
    
      constructor(address _daBank) public {
        _balances[_daBank] = totalSupply;
        emit Transfer(address(0x0), _daBank, totalSupply);
      }
    }

    File 2 of 2: ContractNo1
    pragma solidity 0.4.25;
    
    /**
     * @title ERC20 interface
     * @dev see https://eips.ethereum.org/EIPS/eip-20
     */
    contract IERC20 {
        function transfer(address to, uint256 value) public returns (bool);
    
        function approve(address spender, uint256 value) public returns (bool);
    
        function transferFrom(address from, address to, uint256 value) public returns (bool);
    
        function balanceOf(address who) public view returns (uint256);
    
        function allowance(address owner, address spender) public view returns (uint256);
    
        event Transfer(address indexed from, address indexed to, uint256 value);
    
        event Approval(address indexed owner, address indexed spender, uint256 value);
    }
    
    contract Auth {
      address internal backupAdmin;
      address internal mainAdmin;
      address internal contractAdmin;
      address internal dabAdmin;
      address internal gemAdmin;
      address internal LAdmin;
    
      constructor(
        address _backupAdmin,
        address _mainAdmin,
        address _contractAdmin,
        address _dabAdmin,
        address _gemAdmin,
        address _LAdmin
      )
      internal
      {
        backupAdmin = _backupAdmin;
        mainAdmin = _mainAdmin;
        contractAdmin = _contractAdmin;
        dabAdmin = _dabAdmin;
        gemAdmin = _gemAdmin;
        LAdmin = _LAdmin;
      }
    
      modifier onlyBackupAdmin() {
        require(isBackupAdmin(), "onlyBackupAdmin");
        _;
      }
    
      modifier onlyMainAdmin() {
        require(isMainAdmin(), "onlyMainAdmin");
        _;
      }
    
      modifier onlyBackupOrMainAdmin() {
        require(isMainAdmin() || isBackupAdmin(), "onlyBackupOrMainAdmin");
        _;
      }
    
      modifier onlyContractAdmin() {
        require(isContractAdmin() || isMainAdmin(), "onlyContractAdmin");
        _;
      }
    
      modifier onlyLAdmin() {
        require(isLAdmin() || isMainAdmin(), "onlyLAdmin");
        _;
      }
    
      modifier onlyDABAdmin() {
        require(isDABAdmin() || isMainAdmin(), "onlyDABAdmin");
        _;
      }
    
      modifier onlyGEMAdmin() {
        require(isGEMAdmin() || isMainAdmin(), "onlyGEMAdmin");
        _;
      }
    
      function isBackupAdmin() public view returns (bool) {
        return msg.sender == backupAdmin;
      }
    
      function isMainAdmin() public view returns (bool) {
        return msg.sender == mainAdmin;
      }
    
      function isContractAdmin() public view returns (bool) {
        return msg.sender == contractAdmin;
      }
    
      function isLAdmin() public view returns (bool) {
        return msg.sender == LAdmin;
      }
    
      function isDABAdmin() public view returns (bool) {
        return msg.sender == dabAdmin;
      }
    
      function isGEMAdmin() public view returns (bool) {
        return msg.sender == gemAdmin;
      }
    }
    
    interface IContractNo2 {
      function adminCommission(uint _amount) external;
    
      function deposit(
        address _user,
        uint8 _type,
        uint packageAmount,
        uint _dabAmount,
        uint _gemAmount
      ) external;
    
      function getProfit(address _user, uint _stakingBalance) external returns (uint, uint);
    
      function getWithdraw(address _user, uint _stakingBalance, uint8 _type) external returns (uint, uint);
    
      function validateJoinPackage(
        address _user,
        address _to,
        uint8 _type,
        uint _dabAmount,
        uint _gemAmount
      ) external returns (bool);
    }
    
    interface IContractNo3 {
    
      function isCitizen(address _user) view external returns (bool);
    
      function register(address _user, string _userName, address _inviter) external returns (uint);
    
      function addF1M9DepositedToInviter(address _invitee, uint _amount) external;
    
      function checkInvestorsInTheSameReferralTree(address _inviter, address _invitee) external view returns (bool);
    
      function increaseInviterF1HaveJoinedPackage(address _invitee) external;
    
      function increaseInviterF1HaveJoinedM9Package(address _invitee) external;
    
      function addNetworkDepositedToInviter(address _inviter, uint _dabAmount, uint _gemAmount) external;
    
      function getF1M9Deposited(address _investor) external view returns (uint);
    
      function getDirectlyInviteeHaveJoinedM9Package(address _investor) external view returns (address[]);
    
      function getRank(address _investor) external view returns (uint8);
    
      function getInviter(address _investor) external view returns (address);
    
      function showInvestorInfo(address _investorAddress) external view returns (uint, string memory, address, address[],  address[],  address[], uint, uint, uint, uint, uint);
    }
    
    /**
     * @title SafeMath
     * @dev Unsigned math operations with safety checks that revert on error.
     */
    library SafeMath {
      /**
       * @dev Multiplies two unsigned integers, reverts on 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-solidity/pull/522
        if (a == 0) {
          return 0;
        }
    
        uint256 c = a * b;
        require(c / a == b, 'SafeMath mul error');
    
        return c;
      }
    
      /**
       * @dev Integer division of two unsigned integers truncating the quotient, reverts on division by zero.
       */
      function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, 'SafeMath div error');
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    
        return c;
      }
    
      /**
       * @dev Subtracts two unsigned integers, reverts on overflow (i.e. if subtrahend is greater than minuend).
       */
      function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, 'SafeMath sub error');
        uint256 c = a - b;
    
        return c;
      }
    
      /**
       * @dev Adds two unsigned integers, reverts on overflow.
       */
      function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, 'SafeMath add error');
    
        return c;
      }
    
      /**
       * @dev Divides two unsigned integers and returns the remainder (unsigned integer modulo),
       * reverts when dividing by zero.
       */
      function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0, 'SafeMath mod error');
        return a % b;
      }
    }
    
    contract ContractNo1 is Auth {
      using SafeMath for uint;
    
      enum PackageType {
        M0,
        M3,
        M6,
        M9,
        M12,
        M15,
        M18
      }
    
      enum WithdrawType {
        Half,
        Full
      }
    
      mapping(address => bool) public lAS;
      IERC20 public dabToken = IERC20(0x5E7Ebea68ab05198F771d77a875480314f1d0aae);
      IContractNo2 public contractNo2;
      IContractNo3 public contractNo3;
    
      uint public minJP = 5e18;
      uint8 public gemJPPercent = 30;
    
      event Registered(uint id, string userName, address userAddress, address inviter);
      event PackageJoined(address indexed from, address indexed to, PackageType packageType, uint dabAmount, uint gemAmount);
      event Profited(address indexed user, uint dabAmount, uint gemAmount);
      event Withdrew(address indexed user, uint dabAmount, uint gemAmount);
    
      constructor(
        address _backupAdmin,
        address _mainAdmin,
        address _dabAdmin,
        address _LAdmin
      )
      public
      Auth(
        _backupAdmin,
        _mainAdmin,
        msg.sender,
        _dabAdmin,
        address(0x0),
        _LAdmin
      ) {
      }
    
      // ADMINS FUNCTIONS
    
      function setC(address _c) onlyContractAdmin public {
        contractNo3 = IContractNo3(_c);
      }
    
      function setW(address _w) onlyContractAdmin public {
        contractNo2 = IContractNo2(_w);
      }
    
      function updateBackupAdmin(address _newBackupAdmin) onlyBackupAdmin public {
        require(_newBackupAdmin != address(0x0), 'Invalid address');
        backupAdmin = _newBackupAdmin;
      }
    
      function updateMainAdmin(address _newMainAdmin) onlyBackupOrMainAdmin public {
        require(_newMainAdmin != address(0x0), 'Invalid address');
        mainAdmin = _newMainAdmin;
      }
    
      function updateContractAdmin(address _newContractAdmin) onlyMainAdmin public {
        require(_newContractAdmin != address(0x0), 'Invalid address');
        contractAdmin = _newContractAdmin;
      }
    
      function updateDABAdmin(address _newDABAdmin) onlyMainAdmin public {
        require(_newDABAdmin != address(0x0), 'Invalid address');
        dabAdmin = _newDABAdmin;
      }
    
      function updateLockerAdmin(address _newLockerAdmin) onlyMainAdmin public {
        require(_newLockerAdmin != address(0x0), 'Invalid address');
        LAdmin = _newLockerAdmin;
      }
    
      function LA(address[] _values, bool _locked) onlyLAdmin public {
        require(_values.length > 0, 'Values cannot be empty');
        require(_values.length <= 256, 'Maximum is 256');
        for (uint8 i = 0; i < _values.length; i++) {
          require(_values[i] != msg.sender, 'Yourself!!!');
          lAS[_values[i]] = _locked;
        }
      }
    
      function setMinJP(uint _minJP) onlyMainAdmin public {
        require(_minJP > 0, 'Must be > 0');
        minJP = _minJP;
      }
    
      function setGemJP(uint8 _gemJPPercent) onlyMainAdmin public {
        require(0 < _gemJPPercent && _gemJPPercent < 101, 'Must be 1 - 100');
        gemJPPercent = _gemJPPercent;
      }
    
      // PUBLIC FUNCTIONS
    
      function register(string memory _userName, address _inviter) public {
        require(contractNo3.isCitizen(_inviter), 'Inviter did not registered');
        require(_inviter != msg.sender, 'Cannot referral yourself');
        uint id = contractNo3.register(msg.sender, _userName, _inviter);
        emit Registered(id, _userName, msg.sender, _inviter);
      }
    
      function showMe() public view returns (uint, string memory, address, address[], address[], address[], uint, uint, uint, uint, uint) {
        return contractNo3.showInvestorInfo(msg.sender);
      }
    
      function joinPackage(address _to, PackageType _type, uint _dabAmount, uint _gemAmount) public {
        uint packageAmount = _dabAmount.add(_gemAmount);
        validateJoinPackage(msg.sender, _to, _type, _dabAmount, _gemAmount);
        require(packageAmount >= minJP, 'Package amount must be greater min');
        require(dabToken.allowance(msg.sender, address(this)) >= _dabAmount, 'Please call approve() first');
        require(dabToken.balanceOf(msg.sender) >= _dabAmount, 'You have not enough funds');
        if (_gemAmount > 0) {
          uint8 gemPercent = uint8(_gemAmount.mul(100).div(packageAmount));
          require(gemPercent <= gemJPPercent, 'Too much GEM');
          contractNo2.adminCommission(_gemAmount.div(5));
        }
    
        require(dabToken.transferFrom(msg.sender, address(this), _dabAmount), 'Transfer token to contract failed');
    
        contractNo2.deposit(_to, uint8(_type), packageAmount, _dabAmount, _gemAmount);
    
        require(dabToken.transfer(dabAdmin, _dabAmount.div(5)), 'Transfer token to admin failed');
    
        emit PackageJoined(msg.sender, _to, _type, _dabAmount, _gemAmount);
      }
    
      function profit() public {
        require(!lAS[msg.sender], 'You can\'t do this now');
        uint dabProfit;
        uint gemProfit;
        (dabProfit, gemProfit) = contractNo2.getProfit(msg.sender, dabToken.balanceOf(address(this)));
        require(dabToken.transfer(msg.sender, dabProfit), 'Transfer profit to user failed');
        emit Profited(msg.sender, dabProfit, gemProfit);
      }
    
      function withdraw(WithdrawType _type) public {
        require(!lAS[msg.sender], 'You can\'t do this now');
        uint dabWithdrawable;
        uint gemWithdrawable;
        (dabWithdrawable, gemWithdrawable) = contractNo2.getWithdraw(msg.sender, dabToken.balanceOf(address(this)), uint8(_type));
        require(dabToken.transfer(msg.sender, dabWithdrawable), 'Transfer token to user failed');
        emit Withdrew(msg.sender, dabWithdrawable, gemWithdrawable);
      }
    
      // PRIVATE FUNCTIONS
    
      function validateJoinPackage(address _from, address _to, PackageType _type, uint _dabAmount, uint _gemAmount) private {
        require(contractNo3.isCitizen(_from), 'Please register first');
        require(contractNo3.isCitizen(_to), 'You can only active an exists member');
        if (_from != _to) {
          require(contractNo3.checkInvestorsInTheSameReferralTree(_from, _to), 'This user isn\'t in your referral tree');
        }
        require(contractNo2.validateJoinPackage(_from, _to, uint8(_type), _dabAmount, _gemAmount), 'Type or amount is invalid');
      }
    }