Address:
0x7EB4688dA9E1D0B17E49fd6D313Eb5B415d5eE61

Overview

Contract Name : SLGCToken

Compiler : v0.5.0+commit.1d4f565a

Balance: 0 ETH (0 WEI)

Runs : 200

Optimization : true

Swarm : bzzr://a2f3d6a2711cd581a2f0f145a9ffca3c2f8477ed2b4351196a5ad905c018cf77

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Smart Contract Code

contract address

							
pragma solidity 0.5.0;


/**
 * @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.
     */
    constructor() public {
        owner = msg.sender;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }


}

/**
 * @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 ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
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 Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic {
    using SafeMath for uint256;

    mapping(address => uint256) balances;

    uint256 public 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);
        emit 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];
    }

}


/**
 * @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);
        emit 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) {
        require(_value==0||allowed[msg.sender][_spender]==0);
        allowed[msg.sender][_spender] = _value;
        emit 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);
        emit 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);
        }
        emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
        return true;
    }

}

/**
 * @title Pausable
 * @dev Base contract which allows children to implement an emergency stop mechanism.
 */
contract Pausable is Ownable {
    event Pause();
    event Unpause();

    bool public paused = false;


    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     */
    modifier whenNotPaused() {
        require(!paused);
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     */
    modifier whenPaused() {
        require(paused);
        _;
    }

    /**
     * @dev called by the owner to pause, triggers stopped state
     */
    function pause() onlyOwner whenNotPaused public {
        paused = true;
        emit Pause();
    }

    /**
     * @dev called by the owner to unpause, returns to normal state
     */
    function unpause() onlyOwner whenPaused public {
        paused = false;
        emit Unpause();
    }
}


/**
 * @title Pausable token
 * @dev StandardToken modified with pausable transfers.
 **/
contract PausableToken is StandardToken, Pausable {

    function transfer(address _to, uint256 _value) public whenNotPaused returns (bool) {
        return super.transfer(_to, _value);
    }

    function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool) {
        return super.transferFrom(_from, _to, _value);
    }

    function approve(address _spender, uint256 _value) public whenNotPaused returns (bool) {
        return super.approve(_spender, _value);
    }

    function increaseApproval(address _spender, uint _addedValue) public whenNotPaused returns (bool success) {
        return super.increaseApproval(_spender, _addedValue);
    }

    function decreaseApproval(address _spender, uint _subtractedValue) public whenNotPaused returns (bool success) {
        return super.decreaseApproval(_spender, _subtractedValue);
    }
}

/**
 * @title Lock token
 * @dev Lock  which is defined the lock logic
 **/
contract  Lock is PausableToken{

    mapping(address => uint256) public teamLockTime; // Lock start time
    mapping(address => uint256) public fundLockTime; // Lock start time
    uint256 public issueDate =0 ;//issueDate
    mapping(address => uint256) public teamLocked;// Total Team lock 
    mapping(address => uint256) public fundLocked;// Total fund lock
    mapping(address => uint256) public teamUsed;   // Team Used
    mapping(address => uint256) public fundUsed;   // Fund Used
    mapping(address => uint256) public teamReverse;   // Team reserve
    mapping(address => uint256) public fundReverse;   // Fund reserve
    

   /**
    * @dev Calculate the number of Tokens available for teamAccount
    * @param _to teamAccount's address
   */
    function teamAvailable(address _to) internal view returns (uint256) {
        require(teamLockTime[_to]>0);
    
        uint256 now1 = block.timestamp;
        uint256 lockTime = teamLockTime[_to];
        uint256 time = now1.sub(lockTime);
        //Unlocked 20% first
        uint256 percent = 20;
        // 20% per 180 days after issue
        if(time >= 180 days) {
          percent =  (time.div(9 days)) .add(1);
        }
        percent = percent > 100 ? 100 : percent;
        uint256 avail = teamLocked[_to];
        require(avail>0);
        avail = avail.mul(percent).div(100).sub(teamUsed[_to]);
        return avail ;
    }
    
    /**
     * @dev Get the number of Tokens available for the current private fund account 
     * @param _to SLGCFundAccount's address
    **/
    function fundAvailable(address _to) internal view returns (uint256) {
        require(fundLockTime[_to]>0);

        //The start time of the lock position
        uint256 lockTime = fundLockTime[_to];
        //The interval between the current time and the start time of the lockout
        uint256 time = block.timestamp.sub(lockTime);

        //Unlocked 5% first
        uint256 percent = 5000;
        //unlocking 58/100000 per day
        if(time >= 1 days) {
            percent = percent.add( (((time.sub(1 days)).div (1 days)).add (1)).mul (58));
        }
        percent = percent > 100000 ? 100000 : percent;
        uint256 avail = fundLocked[_to];
        require(avail>0);
        avail = avail.mul(percent).div(100000).sub(fundUsed[_to]);
        return avail ;
    }

    /**
      * @dev Team lock
      * @param _to  team lock account's address
      * @param _value the number of Token
     */
    function teamLock(address _to,uint256 _value) internal {
        require(_value>0);
        teamLocked[_to] = teamLocked[_to].add(_value);
        teamReverse[_to] = teamReverse[_to].add(_value);
        teamLockTime[_to] = block.timestamp;  // Lock start time
    }

    /**
      * @dev  Privately offered fund lock
      * @param _to  Privately offered fund account's address
      * @param _value the number of Token
     */
    function fundLock(address _to,uint256 _value) internal {
        require(_value>0);
        fundLocked[_to] =fundLocked[_to].add(_value);
        fundReverse[_to] = fundReverse[_to].add(_value);
        if(fundLockTime[_to] == 0)
          fundLockTime[_to] = block.timestamp;  // Lock start time
    }

    /**
     * @dev Team account transaction
     * @param _to  The accept token address
     * @param _value Number of transactions
     */
    function teamLockTransfer(address _to, uint256 _value) internal returns (bool) {
        //The remaining part
       uint256 availReverse = balances[msg.sender].sub((teamLocked[msg.sender].sub(teamUsed[msg.sender]))+(fundLocked[msg.sender].sub(fundUsed[msg.sender])));
       uint256 totalAvail=0;
       uint256 availTeam =0;
       if(issueDate==0)
        {
             totalAvail = availReverse;
        }
        else{
            //the number of Tokens available for teamAccount'Locked part
             availTeam = teamAvailable(msg.sender);
             //the number of Tokens available for teamAccount
             totalAvail = availTeam.add(availReverse);
        }
        require(_value <= totalAvail);
        bool ret = super.transfer(_to,_value);
        if(ret == true && issueDate>0) {
            //If over the teamAccount's released part
            if(_value > availTeam){
                teamUsed[msg.sender] = teamUsed[msg.sender].add(availTeam);
                teamReverse[msg.sender] = teamReverse[msg.sender].sub(availTeam);
            }
            //If in the teamAccount's released part
            else{
                teamUsed[msg.sender] = teamUsed[msg.sender].add(_value);
                teamReverse[msg.sender] = teamReverse[msg.sender].sub(_value);
            }
        }
        if(teamUsed[msg.sender] >= teamLocked[msg.sender]){
            delete teamLockTime[msg.sender];
            delete teamReverse[msg.sender];
        }
        return ret;
    }

    /**
     * @dev Team account authorization transaction
     * @param _from The give token address
     * @param _to  The accept token address
     * @param _value Number of transactions
     */
    function teamLockTransferFrom(address _from,address _to, uint256 _value) internal returns (bool) {
       //The remaining part
       uint256 availReverse = balances[_from].sub((teamLocked[_from].sub(teamUsed[_from]))+(fundLocked[_from].sub(fundUsed[_from])));
       uint256 totalAvail=0;
       uint256 availTeam =0;
        if(issueDate==0)
        {
             totalAvail = availReverse;
        }
        else{
            //the number of Tokens available for teamAccount'Locked part
             availTeam = teamAvailable(_from);
              //the number of Tokens available for teamAccount
             totalAvail = availTeam.add(availReverse);
        }
       require(_value <= totalAvail);
        bool ret = super.transferFrom(_from,_to,_value);
        if(ret == true && issueDate>0) {
            //If over the teamAccount's released part
            if(_value > availTeam){
                teamUsed[_from] = teamUsed[_from].add(availTeam);
                teamReverse[_from] = teamReverse[_from].sub(availTeam);
           }
            //If in the teamAccount's released part
            else{
                teamUsed[_from] = teamUsed[_from].add(_value);
                teamReverse[_from] = teamReverse[_from].sub(_value);
            }
        }
        if(teamUsed[_from] >= teamLocked[_from]){
            delete teamLockTime[_from];
            delete teamReverse[_from];
        }
        return ret;
    }

    /**
     * @dev Privately Offered Fund Transfer Token
     * @param _to The accept token address
     * @param _value Number of transactions
     */
    function fundLockTransfer(address _to, uint256 _value) internal returns (bool) {
      //The remaining part
       uint256 availReverse = balances[msg.sender].sub((teamLocked[msg.sender].sub(teamUsed[msg.sender]))+(fundLocked[msg.sender].sub(fundUsed[msg.sender])));
       uint256 totalAvail=0;
       uint256 availFund = 0;
        if(issueDate==0)
        {
             totalAvail = availReverse;
        }
        else{
             require(now>issueDate);
            //the number of Tokens available for SLGCFundAccount'Locked part
             availFund = fundAvailable(msg.sender);
             //the number of Tokens available for SLGCFundAccount
             totalAvail = availFund.add(availReverse);
        }
        require(_value <= totalAvail);
        bool ret = super.transfer(_to,_value);
        if(ret == true && issueDate>0) {
            //If over the SLGCFundAccount's released part
            if(_value > availFund){
                fundUsed[msg.sender] = fundUsed[msg.sender].add(availFund);
                fundReverse[msg.sender] = fundReverse[msg.sender].sub(availFund);
             }
            //If in the SLGCFundAccount's released part
            else{
                fundUsed[msg.sender] =  fundUsed[msg.sender].add(_value);
                fundReverse[msg.sender] = fundReverse[msg.sender].sub(_value);
            }
        }
        if(fundUsed[msg.sender] >= fundLocked[msg.sender]){
            delete fundLockTime[msg.sender];
            delete fundReverse[msg.sender];
        }
        return ret;
    }


    /**
     * @dev Privately Offered Fund Transfer Token
     * @param _from The give token address
     * @param _to The accept token address
     * @param _value Number of transactions
     */
    function fundLockTransferFrom(address _from,address _to, uint256 _value) internal returns (bool) {
        //The remaining part
        uint256 availReverse =  balances[_from].sub((teamLocked[_from].sub(teamUsed[_from]))+(fundLocked[_from].sub(fundUsed[_from])));
        uint256 totalAvail=0;
        uint256 availFund = 0;
        if(issueDate==0)
        {
             totalAvail = availReverse;
        }
        else{
             require(now>issueDate);
             //the number of Tokens available for SLGCFundAccount'Locked part
             availFund = fundAvailable(_from);
              //the number of Tokens available for SLGCFundAccount
             totalAvail = availFund.add(availReverse);
        }
      
        require(_value <= totalAvail);
        bool ret = super.transferFrom(_from,_to,_value);
        if(ret == true && issueDate>0) {
           //If over the SLGCFundAccount's released part
            if(_value > availFund){
                fundUsed[_from] = fundUsed[_from].add(availFund);
                fundReverse[_from] = fundReverse[_from].sub(availFund);
            }
            //If in the SLGCFundAccount's released part
            else{
                fundUsed[_from] =  fundUsed[_from].add(_value);
                fundReverse[_from] = fundReverse[_from].sub(_value);
            }
        }
        if(fundUsed[_from] >= fundLocked[_from]){
            delete fundLockTime[_from];
        }
        return ret;
    }
}

/**
 * @title Simulation Game Coin
 * @dev SLGC Contract
 **/
contract SLGCToken is Lock {
    bytes32 public name = "Simulation Game Coin";
    bytes32 public symbol = "SLGC";
    uint8 public decimals = 8;
    // Proportional accuracy
    uint256 public precentDecimal = 2;

    // firstFundPrecent
    uint256 public firstFundPrecent = 500; 
    // secondFundPrecent
    uint256 public secondFundPrecent = 1000; 
    //stableFundPrecent
    uint256 public stableFundPrecent = 300; 
    //ecologyFundPrecent
    uint256 public ecologyFundPrecent = 1100; 
    //devTeamPrecent
    uint256 public devTeamPrecent = 600;
    //SLGCFoundationPrecent
    uint256 public SLGCFoundationPrecent = 6500;
    //firstFundBalance
    uint256 public firstFundBalance;
    //secondFundBalance
    uint256 public secondFundBalance;
    //stableFundBalance
    uint256 public stableFundBalance;
    //ecologyFundBalance
    uint256 public ecologyFundBalance;
    //devTeamBalance
    uint256 public devTeamBalance;
    //SLGCFoundationBalance
    uint256 public SLGCFoundationBalance;
    //SLGCFundAccount
    address public SLGCFundAccount;
    

    /**
     *  @dev Contract constructor
     *  @param _initialSupply token's initialSupply
     *  @param _teamAccount  teamAccount
     *  @param _firstFundAccount firstFundAccount
     *  @param _secondFundAccount secondFundAccount
     *  @param _stableFundAccount stableFundAccount
     *  @param _ecologyFundAccount ecologyFundAccount
     *  @param _SLGCFoundationAccount SLGCFoundationAccount
    */
    constructor(uint256 _initialSupply,address _teamAccount,address _firstFundAccount,address _secondFundAccount,address _stableFundAccount,address _ecologyFundAccount,address _SLGCFoundationAccount) public {
        //Define a SLGCFundAccount
        SLGCFundAccount = _SLGCFoundationAccount;

        //Calculated according to accuracy, if the precision is 18, it is _initialSupply x 10 to the power of 18
        totalSupply_ = _initialSupply * 10 ** uint256(decimals);

        //Calculate the total value of firstFund
        firstFundBalance =  totalSupply_.mul(firstFundPrecent).div(100* 10 ** precentDecimal);
        //Calculate the total value of secondFund
        secondFundBalance =  totalSupply_.mul(secondFundPrecent).div(100* 10 ** precentDecimal);
        //Calculate the total value of stableFund
        stableFundBalance =  totalSupply_.mul(stableFundPrecent).div(100* 10 ** precentDecimal);
        //Calculate the total value of ecologyFund
        ecologyFundBalance =  totalSupply_.mul(ecologyFundPrecent).div(100* 10 ** precentDecimal);
        //Calculate the total value of devTeamBalance
        devTeamBalance =  totalSupply_.mul(devTeamPrecent).div(100* 10 ** precentDecimal);
        //Calculate the total value of SLGCFoundationBalance
        SLGCFoundationBalance = totalSupply_.mul(SLGCFoundationPrecent).div(100* 10 ** precentDecimal) ;
        //Initially put the SLGCFoundationBalance into the SLGCFoundationAccount
        balances[_SLGCFoundationAccount] = SLGCFoundationBalance; 

        //Initially put the devTeamBalance into the teamAccount
        balances[_teamAccount] = devTeamBalance;

        //Initially put the firstFundBalance into the firstFundAccount
        balances[_firstFundAccount]=firstFundBalance;

        //Initially put the secondFundBalance into the secondFundAccount
        balances[_secondFundAccount]=secondFundBalance;

        //Initially put the stableFundBalance into the stableFundAccount
        balances[_stableFundAccount]=stableFundBalance;

        //Initially put the ecologyFundBalance into the ecologyFundAccount
        balances[_ecologyFundAccount]=ecologyFundBalance;

        //Initially lock the team account
        teamLock(_teamAccount,devTeamBalance);
        
    }

    /**
      * @dev destroy the msg sender's token onlyOwner
      * @param _value the number of the destroy token
     */
    function burn(uint256 _value) public onlyOwner returns (bool) {
        balances[msg.sender] = balances[msg.sender].sub(_value);
        balances[address(0)] = balances[address(0)].add(_value);
        emit Transfer(msg.sender, address(0), _value);
        return true;
    }

    /**
     * @dev Transfer token
     * @param _to the accept token address
     * @param _value the number of transfer token
     */
    function transfer(address _to, uint256 _value) public returns (bool) {
        if(issueDate==0)
        {
            //the SLGCFundAccounts is not allowed to transfer before issued
            require(msg.sender != SLGCFundAccount);
        }

        if(teamLockTime[msg.sender] > 0){
            return super.teamLockTransfer(_to,_value);
        }else if(fundLockTime[msg.sender] > 0){
            return super.fundLockTransfer(_to,_value);
        }else {
            return super.transfer(_to, _value);    
        }
    }

    /**
     * @dev Transfer token
     * @param _from the give token address
     * @param _to the accept token address
     * @param _value the number of transfer token
     */
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
          if(issueDate==0)
        {
            //the SLGCFundAccounts is not allowed to transfer before issued
            require(_from != SLGCFundAccount);
        }
      
        if(teamLockTime[_from] > 0){
            return super.teamLockTransferFrom(_from,_to,_value);
        }else if(fundLockTime[_from] > 0 ){  
            return super.fundLockTransferFrom(_from,_to,_value);
        }else{
            return super.transferFrom(_from, _to, _value);
        }
    }

    /**
     *  @dev Privately offered Fund 
     *  @param _to the accept token address
     *  @param _value the number of transfer token
     */
    function mintFund(address _to, uint256 _value) public  returns (bool){
        require(_value >0);
        require(msg.sender==SLGCFundAccount);
        require(SLGCFoundationBalance >0);
        if(_value <= SLGCFoundationBalance){
            super.transfer(_to,_value);
            fundLock(_to,_value);
            SLGCFoundationBalance = SLGCFoundationBalance.sub(_value);
        }
    }

    /**
    * @dev Issue the token 
    */
    function issue() public onlyOwner  returns (uint){
        //Only one time 
        require(issueDate==0);
        issueDate = now;
        return now;
    }
     
     /**avoid mis-transfer*/
     function() external payable{
         revert();
     }
}

ABI Interface