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0x02D3AeA48B443A0026eD9cBc91b97D7335AbA323

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0x6394b37C...d49983a1B at txn 0x1da874d9f4a066f619a95156ce7f4b695c31007dc9d78fdf67e8c7d4c3875676

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0x777Aa9d6...2F82f652f at txn 0xe9141ce6dab18ca67e56239740e57650ce36291b4b7e5c13d6a776ada9cbd504

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Latest 4 from a total of 4 transactions

Transaction Hash	Method	Block		From		To
0x38423771ec9858e8e842416491aa93a203306c487a817906b852ba8a30cf978c	Cleanup	4632232	2017-11-27 14:41:36	2432 days ago	1511793696	0x6394b37C...d49983a1B	IN	0x02D3AeA4...335AbA323	0 ETH$0.00	0.00027278	20
0xe9141ce6dab18ca67e56239740e57650ce36291b4b7e5c13d6a776ada9cbd504	Transfer	4312190	2017-09-26 3:37:06	2495 days ago	1506397026	0x777Aa9d6...2F82f652f	IN	0x02D3AeA4...335AbA323	0.9 ETH$2,929.86	0.0044298	21
0x5662315644ec8862d225a7b3780b06be469685b69b69f6d641ab20ba53d2740e	Advance State	4310406	2017-09-25 12:44:13	2496 days ago	1506343453	0x6394b37C...d49983a1B	IN	0x02D3AeA4...335AbA323	0 ETH$0.00	0.00060013	21
0x1da874d9f4a066f619a95156ce7f4b695c31007dc9d78fdf67e8c7d4c3875676	0x60606040	4308743	2017-09-24 22:38:09	2496 days ago	1506292689	0x6394b37C...d49983a1B	IN	Create: HardcodedCrowdsale	0 ETH$0.00	0.0269859	15

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Parent Transaction Hash	Block		From		To
0x38423771ec9858e8e842416491aa93a203306c487a817906b852ba8a30cf978c	4632232	2017-11-27 14:41:36	2432 days ago	1511793696	0x02D3AeA4...335AbA323		0x6394b37C...d49983a1B	0.9 ETH$2,929.86

Code

Contract Self Destruct called at Txn Hash 0x38423771ec9858e8e842416491aa93a203306c487a817906b852ba8a30cf978c

Contract Source Code Verified (Exact Match)

Contract Name:

HardcodedCrowdsale

Compiler Version

v0.4.17+commit.bdeb9e52

Optimization Enabled:

Yes with 200 runs

Other Settings:

default evmVersion

Contract Source Code (Solidity)

IDE

/**
 *Submitted for verification at Etherscan.io on 2017-09-24
*/

pragma solidity ^0.4.17;

library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a / b;
    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;
  }
}

interface ManagedToken{
    function setLock(bool _newLockState) public returns (bool success);
    function mint(address _for, uint256 _amount) public returns (bool success);
    function demint(address _for, uint256 _amount) public returns (bool success);
    function decimals() constant public returns (uint8 decDigits);
    function totalSupply() constant public returns (uint256 supply);
    function balanceOf(address _owner) constant public returns (uint256 balance);
}
  
contract HardcodedCrowdsale {
    using SafeMath for uint256;

    //global definisions

    enum ICOStateEnum {NotStarted, Started, Refunded, Successful}


    address public owner = msg.sender;
    ManagedToken public managedTokenLedger;

    string public name = "MDBlockchainPreICO";
    string public symbol = "MDB";

    bool public unlocked = false;
    bool public halted = false;

    uint256 public totalSupply = 0;
    
    uint256 public minTokensToBuy = 1000;
    
    uint256 public preICOcontributors = 0;
    uint256 public ICOcontributors = 0;

    uint256 public preICOstart;
    uint256 public preICOend;
    uint256 public preICOgoal;
    uint256 public preICOcollected = 0;
    uint256 public preICOcap = 0 ether;
    uint256 public preICOtokensSold = 0;
    ICOStateEnum public preICOstate = ICOStateEnum.NotStarted;
    
    uint8 public decimals = 18;
    uint256 public DECIMAL_MULTIPLIER = 10**uint256(decimals);

    uint256[3] public preICOrates = [uint(1 ether).div(1600), uint(1 ether).div(1400), uint(1 ether).div(1200)];
    uint256[3] public preICOcoinsLeft = [7000000*DECIMAL_MULTIPLIER, 14000000*DECIMAL_MULTIPLIER, 21000000*DECIMAL_MULTIPLIER];
    uint256 public totalPreICOavailible = 42000000*DECIMAL_MULTIPLIER;

    mapping(address => uint256) public weiForRefundPreICO;

    mapping(address => uint256) public weiToRecoverPreICO;

    mapping(address => uint256) public balancesForPreICO;

    event Purchased(address indexed _from, uint256 _value);

    function advanceState() public returns (bool success) {
        transitionState();
        return true;
    }

    function transitionState() internal {
        if (now >= preICOstart) {
            if (preICOstate == ICOStateEnum.NotStarted) {
                preICOstate = ICOStateEnum.Started;
            }
            if (preICOcap > 0 && preICOcollected >= preICOcap) {
                preICOstate = ICOStateEnum.Successful;
            }
            if (preICOtokensSold == totalPreICOavailible) {
                preICOstate = ICOStateEnum.Successful;
            }
        } if (now >= preICOend) {
            if (preICOstate == ICOStateEnum.Started) {
                if (preICOcollected >= preICOgoal) {
                    preICOstate = ICOStateEnum.Successful;
                } else {
                    preICOstate = ICOStateEnum.Refunded;
                }
            }
        } 
    }

    modifier stateTransition() {
        transitionState();
        _;
        transitionState();
    }

    modifier requirePreICOState(ICOStateEnum _state) {
        require(preICOstate == _state);
        _;
    }

    modifier notHalted() {
        require(!halted);
        _;
    }

    // Ownership

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

    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }

    function transferOwnership(address newOwner) public onlyOwner {
        require(newOwner != address(0));      
        OwnershipTransferred(owner, newOwner);
        owner = newOwner;
    }

    function balanceOf(address _owner) constant public returns (uint256 balance) {
        return managedTokenLedger.balanceOf(_owner);
    }


    function HardcodedCrowdsale (uint _preICOstart, uint _preICOend, uint _preICOgoal, uint _preICOcap, address _newLedgerAddress) public {
        require(_preICOstart > now);
        require(_preICOend > _preICOstart);
        require(_preICOgoal > 0);
        require(_newLedgerAddress != address(0));
        preICOstart = _preICOstart;
        preICOend = _preICOend;
        preICOgoal = _preICOgoal;
        preICOcap = _preICOcap;
        managedTokenLedger = ManagedToken(_newLedgerAddress);
        decimals = managedTokenLedger.decimals();
        DECIMAL_MULTIPLIER = 10**uint256(decimals);
    }

    function setNameAndTicker(string _name, string _symbol) onlyOwner public returns (bool success) {
        require(bytes(_name).length > 1);
        require(bytes(_symbol).length > 1);
        name = _name;
        symbol = _symbol;
        return true;
    }

    function setLedger (address _newLedgerAddress) onlyOwner public returns (bool success) {
        require(_newLedgerAddress != address(0));
        managedTokenLedger = ManagedToken(_newLedgerAddress);
        decimals = managedTokenLedger.decimals();
        DECIMAL_MULTIPLIER = 10**uint256(decimals);
        return true;
    }

    function () payable stateTransition notHalted public {
        if (preICOstate == ICOStateEnum.Started) {
            assert(preICOBuy());
        } else {
            revert();
        }
    }

    function transferPreICOCollected() onlyOwner stateTransition public returns (bool success) {
        require(preICOstate == ICOStateEnum.Successful);
        owner.transfer(preICOcollected);
        return true;
    }

    function setHalt(bool _halt) onlyOwner public returns (bool success) {
        halted = _halt;
        return true;
    }

    function calculateAmountBoughtPreICO(uint256 _weisSentScaled) internal returns (uint256 _tokensToBuyScaled, uint256 _weisLeftScaled) {
        uint256 value = _weisSentScaled;
        uint256 totalPurchased = 0;
        for (uint8 i = 0; i < preICOrates.length; i++) {
            if (preICOcoinsLeft[i] == 0) {
                continue;
            }
            uint256 rate = preICOrates[i];
            uint256 forThisRate = value.div(rate);
            if (forThisRate == 0) {
                break;
            }
            if (forThisRate > preICOcoinsLeft[i]) {
                forThisRate = preICOcoinsLeft[i];
                preICOcoinsLeft[i] = 0;
            } else {
                preICOcoinsLeft[i] = preICOcoinsLeft[i].sub(forThisRate);
            }
            uint256 consumed = forThisRate.mul(rate);
            value = value.sub(consumed);
            totalPurchased = totalPurchased.add(forThisRate);
        }
        return (totalPurchased, value);
    }

    function preICOBuy() internal notHalted returns (bool success) {
        uint256 weisSentScaled = msg.value.mul(DECIMAL_MULTIPLIER);
        address _for = msg.sender;
        var (tokensBought, fundsLeftScaled) = calculateAmountBoughtPreICO(weisSentScaled);
        if (tokensBought < minTokensToBuy.mul(DECIMAL_MULTIPLIER)) {
            revert();
        }
        uint256 fundsLeft = fundsLeftScaled.div(DECIMAL_MULTIPLIER);
        uint256 totalSpent = msg.value.sub(fundsLeft);
        if (balanceOf(_for) == 0) {
            preICOcontributors = preICOcontributors + 1;
        }
        managedTokenLedger.mint(_for, tokensBought);
        balancesForPreICO[_for] = balancesForPreICO[_for].add(tokensBought);
        weiForRefundPreICO[_for] = weiForRefundPreICO[_for].add(totalSpent);
        weiToRecoverPreICO[_for] = weiToRecoverPreICO[_for].add(fundsLeft);
        Purchased(_for, tokensBought);
        preICOcollected = preICOcollected.add(totalSpent);
        totalSupply = totalSupply.add(tokensBought);
        preICOtokensSold = preICOtokensSold.add(tokensBought);
        return true;
    }

    function recoverLeftoversPreICO() stateTransition notHalted public returns (bool success) {
        require(preICOstate != ICOStateEnum.NotStarted);
        uint256 value = weiToRecoverPreICO[msg.sender];
        delete weiToRecoverPreICO[msg.sender];
        msg.sender.transfer(value);
        return true;
    }

    function refundPreICO() stateTransition requirePreICOState(ICOStateEnum.Refunded) notHalted 
        public returns (bool success) {
            uint256 value = weiForRefundPreICO[msg.sender];
            delete weiForRefundPreICO[msg.sender];
            uint256 tokenValue = balancesForPreICO[msg.sender];
            delete balancesForPreICO[msg.sender];
            managedTokenLedger.demint(msg.sender, tokenValue);
            msg.sender.transfer(value);
            return true;
    }

    function cleanup() onlyOwner public {
        selfdestruct(owner);
    }

}

Contract Security Audit

No Contract Security Audit Submitted- Submit Audit Here

Contract ABI

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balancesForPreICO","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"DECIMAL_MULTIPLIER","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"preICOcoinsLeft","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalPreICOavailible","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newLedgerAddress","type":"address"}],"name":"setLedger","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"preICOstart","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"preICOstate","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"minTokensToBuy","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"cleanup","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"managedTokenLedger","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"preICOtokensSold","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"recoverLeftoversPreICO","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"preICOcollected","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"unlocked","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"preICOrates","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"preICOcap","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"advanceState","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"preICOgoal","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"transferPreICOCollected","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"halted","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"string"},{"name":"_symbol","type":"string"}],"name":"setNameAndTicker","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"refundPreICO","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"weiForRefundPreICO","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"ICOcontributors","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"preICOcontributors","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_halt","type":"bool"}],"name":"setHalt","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"preICOend","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"weiToRecoverPreICO","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_preICOstart","type":"uint256"},{"name":"_preICOend","type":"uint256"},{"name":"_preICOgoal","type":"uint256"},{"name":"_preICOcap","type":"uint256"},{"name":"_newLedgerAddress","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Purchased","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"}]

Contract Creation Code

Decompile Bytecode Switch to Opcodes View

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Deployed Bytecode

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000000000000000000000000000000000000059c871300000000000000000000000000000000000000000000000000000000059effe3000000000000000000000000000000000000000000000003635c9adc5dea000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000827b4bccfd235f7ba220a073df221a24b7771f53

-----Decoded View---------------
Arg [0] : _preICOstart (uint256): 1506308400
Arg [1] : _preICOend (uint256): 1508900400
Arg [2] : _preICOgoal (uint256): 1000000000000000000000
Arg [3] : _preICOcap (uint256): 0
Arg [4] : _newLedgerAddress (address): 0x827b4bccfD235f7Ba220A073dF221A24B7771f53

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000059c87130
Arg [1] : 0000000000000000000000000000000000000000000000000000000059effe30
Arg [2] : 00000000000000000000000000000000000000000000003635c9adc5dea00000
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [4] : 000000000000000000000000827b4bccfd235f7ba220a073df221a24b7771f53

Swarm Source

bzzr://43b425985d607cb8c20abf734cafa06fec0e02a9a7331e290e652eeaadf4f0e9

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.

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