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ETH Balance

0 ETH

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$0.00

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Transaction Hash
Method
Block
From
To
Transfer41022922017-08-01 3:38:442740 days ago1501558724IN
0x1c4080B2...5E7a55dc7
0 ETH0.0008280521
Drain41022902017-08-01 3:38:192740 days ago1501558699IN
0x1c4080B2...5E7a55dc7
0 ETH0.0006736322.42746943
Transfer41022842017-08-01 3:35:282740 days ago1501558528IN
0x1c4080B2...5E7a55dc7
0.01 ETH0.0034168725.24382637

Latest 1 internal transaction

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41022902017-08-01 3:38:192740 days ago1501558699
0x1c4080B2...5E7a55dc7
0.01 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x77a9fE3E...2abae9CF7
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
blockoptions

Compiler Version
v0.4.13+commit.fb4cb1a

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2017-08-01
*/

pragma solidity ^ 0.4 .8;


contract ERC20 {

    uint public totalSupply;

    function balanceOf(address who) constant returns(uint256);

    function allowance(address owner, address spender) constant returns(uint);

    function transferFrom(address from, address to, uint value) returns(bool ok);

    function approve(address spender, uint value) returns(bool ok);

    function transfer(address to, uint value) returns(bool ok);

    event Transfer(address indexed from, address indexed to, uint value);

    event Approval(address indexed owner, address indexed spender, uint value);

}

contract blockoptions is ERC20

{

       /* Public variables of the token */
      //To store name for token
      string public name = "blockoptions";
    
      //To store symbol for token       
      string public symbol = "BOPT";
    
      //To store decimal places for token
      uint8 public decimals = 8;    
    
      //To store current supply of BOPT
      uint public totalSupply=20000000 * 100000000;
      
       uint pre_ico_start;
       uint pre_ico_end;
       uint ico_start;
       uint ico_end;
       mapping(uint => address) investor;
       mapping(uint => uint) weireceived;
       mapping(uint => uint) optsSent;
      
        event preico(uint counter,address investors,uint weiReceived,uint boptsent);
        event ico(uint counter,address investors,uint weiReceived,uint boptsent);
        uint counter=0;
        uint profit_sent=0;
        bool stopped = false;
        
      function blockoptions() payable{
          owner = msg.sender;
          balances[owner] = totalSupply ; //to handle 8 decimal places
          pre_ico_start = now;
          pre_ico_end = pre_ico_start + 7 days;
          
        }
      //map to store BOPT balance corresponding to address
      mapping(address => uint) balances;
    
      //To store spender with allowed amount of BOPT to spend corresponding to BOPTs holder's account
      mapping (address => mapping (address => uint)) allowed;
    
      //owner variable to store contract owner account
      address public owner;
      
      //modifier to check transaction initiator is only owner
      modifier onlyOwner() {
        if (msg.sender == owner)
          _;
      }
    
      //ownership can be transferred to provided newOwner. Function can only be initiated by contract owner's account
      function transferOwnership(address newOwner) onlyOwner {
          balances[newOwner] = balances[owner];
          balances[owner]=0;
          owner = newOwner;
      }

        /**
        * Multiplication with safety check
        */
        function Mul(uint a, uint b) internal returns (uint) {
          uint c = a * b;
          //check result should not be other wise until a=0
          assert(a == 0 || c / a == b);
          return c;
        }
    
        /**
        * Division with safety check
        */
        function Div(uint a, uint b) internal returns (uint) {
          //overflow check; b must not be 0
          assert(b > 0);
          uint c = a / b;
          assert(a == b * c + a % b);
          return c;
        }
    
        /**
        * Subtraction with safety check
        */
        function Sub(uint a, uint b) internal returns (uint) {
          //b must be greater that a as we need to store value in unsigned integer
          assert(b <= a);
          return a - b;
        }
    
        /**
        * Addition with safety check
        */
        function Add(uint a, uint b) internal returns (uint) {
          uint c = a + b;
          //result must be greater as a or b can not be negative
          assert(c>=a && c>=b);
          return c;
        }
    
      /**
        * assert used in different Math functions
        */
        function assert(bool assertion) internal {
          if (!assertion) {
            throw;
          }
        }
    
    //Implementation for transferring BOPT to provided address 
      function transfer(address _to, uint _value) returns (bool){

        uint check = balances[owner] - _value;
        if(msg.sender == owner && now>=pre_ico_start && now<=pre_ico_end && check < 1900000000000000)
        {
            return false;
        }
        else if(msg.sender ==owner && now>=pre_ico_end && now<=(pre_ico_end + 16 days) && check < 1850000000000000)
        {
            return false;
        }
        else if(msg.sender == owner && check < 150000000000000 && now < ico_start + 180 days)
        {
            return false;
        }
        else if (msg.sender == owner && check < 100000000000000 && now < ico_start + 360 days)
        {
            return false;
        }
        else if (msg.sender == owner && check < 50000000000000 && now < ico_start + 540 days)
        {
            return false;
        }
        //Check provided BOPT should not be 0
       else if (_value > 0) {
          //deduct OPTS amount from transaction initiator
          balances[msg.sender] = Sub(balances[msg.sender],_value);
          //Add OPTS to balace of target account
          balances[_to] = Add(balances[_to],_value);
          //Emit event for transferring BOPT
          Transfer(msg.sender, _to, _value);
          return true;
        }
        else{
          return false;
        }
      }
      
      //Transfer initiated by spender 
      function transferFrom(address _from, address _to, uint _value) returns (bool) {
    
        //Check provided BOPT should not be 0
        if (_value > 0) {
          //Get amount of BOPT for which spender is authorized
          var _allowance = allowed[_from][msg.sender];
          //Add amount of BOPT in trarget account's balance
          balances[_to] = Add(balances[_to], _value);
          //Deduct BOPT amount from _from account
          balances[_from] = Sub(balances[_from], _value);
          //Deduct Authorized amount for spender
          allowed[_from][msg.sender] = Sub(_allowance, _value);
          //Emit event for Transfer
          Transfer(_from, _to, _value);
          return true;
        }else{
          return false;
        }
      }
      
      //Get BOPT balance for provided address
      function balanceOf(address _owner) constant returns (uint balance) {
        return balances[_owner];
      }
      
      //Add spender to authorize for spending specified amount of BOPT 
      function approve(address _spender, uint _value) returns (bool) {
        allowed[msg.sender][_spender] = _value;
        //Emit event for approval provided to spender
        Approval(msg.sender, _spender, _value);
        return true;
      }
      
      //Get BOPT amount that spender can spend from provided owner's account 
      function allowance(address _owner, address _spender) constant returns (uint remaining) {
        return allowed[_owner][_spender];
      }
      
       /*	
       * Failsafe drain
       */
    	function drain() onlyOwner {
    		owner.send(this.balance);
    	}
	
    	function() payable 
    	{   
    	    if(stopped && msg.sender != owner)
    	    revert();
    	     else if(msg.sender == owner)
    	    {
    	        profit_sent = msg.value;
    	    }
    	   else if(now>=pre_ico_start && now<=pre_ico_end)
    	    {
    	        uint check = balances[owner]-((400*msg.value)/10000000000);
    	        if(check >= 1900000000000000)
                pre_ico(msg.sender,msg.value);
    	    }
            else if (now>=ico_start && now<ico_end)
            {
                main_ico(msg.sender,msg.value);
            }
            
        }
       
       function pre_ico(address sender, uint value)payable
       {
          counter = counter+1;
	      investor[counter]=sender;
          weireceived[counter]=value;
          optsSent[counter] = (400*value)/10000000000;
          balances[owner]=balances[owner]-optsSent[counter];
          balances[investor[counter]]+=optsSent[counter];
          preico(counter,investor[counter],weireceived[counter],optsSent[counter]);
       }
       
       function  main_ico(address sender, uint value)payable
       {
           if(now >= ico_start && now <= (ico_start + 7 days)) //20% discount on BOPT
           {
              counter = counter+1;
    	      investor[counter]=sender;
              weireceived[counter]=value;
              optsSent[counter] = (250*value)/10000000000;
              balances[owner]=balances[owner]-optsSent[counter];
              balances[investor[counter]]+=optsSent[counter];
              ico(counter,investor[counter],weireceived[counter],optsSent[counter]);
           }
           else if (now >= (ico_start + 7 days) && now <= (ico_start + 14 days)) //10% discount on BOPT
           {
              counter = counter+1;
    	      investor[counter]=sender;
              weireceived[counter]=value;
              optsSent[counter] = (220*value)/10000000000;
              balances[owner]=balances[owner]-optsSent[counter];
              balances[investor[counter]]+=optsSent[counter];
              ico(counter,investor[counter],weireceived[counter],optsSent[counter]);
           }
           else if (now >= (ico_start + 14 days) && now <= (ico_start + 31 days)) //no discount on BOPT
           {
              counter = counter+1;
    	      investor[counter]=sender;
              weireceived[counter]=value;
              optsSent[counter] = (200*value)/10000000000;
              balances[owner]=balances[owner]-optsSent[counter];
              balances[investor[counter]]+=optsSent[counter];
              ico(counter,investor[counter],weireceived[counter],optsSent[counter]);
           }
       }
       
       function startICO()onlyOwner
       {
           ico_start = now;
           ico_end=ico_start + 31 days;
           pre_ico_start = 0;
           pre_ico_end = 0;
           
       }
       
      
        function endICO()onlyOwner
       {
          stopped=true;
          if(balances[owner] > 150000000000000)
          {
              uint burnedTokens = balances[owner]-150000000000000;
           totalSupply = totalSupply-burnedTokens;
           balances[owner] = 150000000000000;
          }
       }

        struct distributionStruct
        {
            uint divident;
            bool dividentStatus;
        }   
        mapping(address => distributionStruct) dividentsMap;
        mapping(uint => address)requestor;
   
         event dividentSent(uint requestNumber,address to,uint divi);
         uint requestCount=0;
          
          function distribute()onlyOwner
          {
              for(uint i=1; i <= counter;i++)
              {
                dividentsMap[investor[i]].divident = (balanceOf(investor[i])*profit_sent)/(totalSupply*100000000);
                dividentsMap[investor[i]].dividentStatus = true;
              }
          }
           
          function requestDivident()payable
          {
              requestCount = requestCount + 1;
              requestor[requestCount] = msg.sender;
                  if(dividentsMap[requestor[requestCount]].dividentStatus == true)
                  {   
                      dividentSent(requestCount,requestor[requestCount],dividentsMap[requestor[requestCount]].divident);
                      requestor[requestCount].send(dividentsMap[requestor[requestCount]].divident);
                      dividentsMap[requestor[requestCount]].dividentStatus = false;
                  }
               
          }

}

Contract Security Audit

Contract ABI

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"endICO","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"startICO","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"sender","type":"address"},{"name":"value","type":"uint256"}],"name":"pre_ico","outputs":[],"payable":true,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"drain","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"sender","type":"address"},{"name":"value","type":"uint256"}],"name":"main_ico","outputs":[],"payable":true,"type":"function"},{"constant":false,"inputs":[],"name":"requestDivident","outputs":[],"payable":true,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"distribute","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"type":"function"},{"inputs":[],"payable":true,"type":"constructor"},{"payable":true,"type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"counter","type":"uint256"},{"indexed":false,"name":"investors","type":"address"},{"indexed":false,"name":"weiReceived","type":"uint256"},{"indexed":false,"name":"boptsent","type":"uint256"}],"name":"preico","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"counter","type":"uint256"},{"indexed":false,"name":"investors","type":"address"},{"indexed":false,"name":"weiReceived","type":"uint256"},{"indexed":false,"name":"boptsent","type":"uint256"}],"name":"ico","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"requestNumber","type":"uint256"},{"indexed":false,"name":"to","type":"address"},{"indexed":false,"name":"divi","type":"uint256"}],"name":"dividentSent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]

Deployed Bytecode

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Swarm Source

bzzr://702f1aa098a06c44e64bc30c848cee0ebf1addf737cb74d75719346658a59ac4

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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.