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Contract Overview
Balance: 0 Ether
Ether Value: $0
Transactions: 305 txns
Token Tracker: QBT (QBT)
Misc:
Address Watch: Add To Watch List
Contract Creator: 0x16a0e0e768c7a9e7d408c201396340afdde7d00eat txn 0xdf09d0d5599cfdfcede362797317f96a46c5e615b6507562a6e5d89ef9eb28cc
 Latest 25 transactions from a total of 305 transactions

TxHash Age From To Value [TxFee]
0x9ed9eb7e1549df6c880fa780e664ce314d6cb1c7526799c6a5691eaa16b0928615 mins ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.0006315
0xaa494704a47ef8b0820b510ecc071af9b6c197fff276c191603b75f5a96d94182 hrs 19 mins ago0x38a7837399d23b5e066d9bee4e98133110d71a1e  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000413875
0x65b05cdebf59977ccc1c4ebcba76423c0f941846c284ef2298385b0b8713f6279 hrs 46 mins ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000157683
0x8806d97140175d3fec5862d988e5ac5775fe4e6e631c15f018177c710b8fca8212 hrs 50 mins ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.0000714875
0x112508ff52981a53a8e321c1bdeadc133ae049679b2ced55b8efdcf909b72a1d1 day 13 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000157875
0x6035a6157dd54098eb9e771235914fa56d39870af36aa3c666f4cd1e1688d2f81 day 17 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000188125
0x10dc8e926f8fc05c21d1d5830513d532feabccf502e793642843fd652ee994fd1 day 18 hrs ago0xba7b446bd76be183d9b7de99256dc59f8889d5e4  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000090504525
0x9036a72d16cec845139fa1c7929d1843daf0ee67df914605f00cc329612203e71 day 20 hrs ago0x01d5a9b768249690d4c84e7d830eaf6a4806a94f  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000421
0x8eda3d38eb7873b559ec7b68f8c13cca4aac7c19d0dcdb414ce0160dda064f3a1 day 20 hrs ago0x01d5a9b768249690d4c84e7d830eaf6a4806a94f  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.00031575
0x01cc57b5bbd5ef873dab72aa61fcd13d816b9f0558b2b53e96100dca7bdbb91f1 day 20 hrs ago0x01d5a9b768249690d4c84e7d830eaf6a4806a94f  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.00052625
0xeb31ac8bf3b9a1b70e059425234740f3957b5da1d604ae34520be87ff7e98e782 days 4 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000151112875
0xd287cce5375d5a0cf4d28e2d95508127655c1a53fac795ccfa21185500a755af2 days 11 hrs ago0x236370126b62985c7301e25045ca5c7896f08c77  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000790125
0x845144213a92b98b7f5cb764f9c7e2448eaefa23a8890a98c0e1177349136ecd2 days 19 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.00031575
0x95582217f0009d6f8ee88a332436d22b7cfc0c7d96f4c5fd0c347c50961f0e2f2 days 22 hrs ago0xf1736a41d5d45548a85a3ab88a6c56e6d193b87b  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000090248512
0x56055f565164389ab0c978407f99e1e5f574d98d7282aeef569044e48ddb157e2 days 22 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.0004788875
0xda13259fc34f0be7f5d80e861bf826c722debc8e4613d77b79bb8842a65f66e72 days 23 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000578875
0x1293d3636e11970c3ff8ea40f2eceb040d944e4b3abc985ca1e5d049b79280993 days 4 hrs ago0x20d2e5df07b79156842fe213633725e0644e6b9c  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000262485
0x14efa0f2d729de7b5f6ce5cda5b92a11334a9351456c9e1e2ca29c0569950f813 days 4 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000262805
0x6e2b005b741c934b009702714bbbf6eea7e448b5f7796e4b3ea12fdff32821093 days 6 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.0001915611
0x4cc325525d0c2d5f11f8a941e4fb0acb3161415629f2a82ca314ee81042178933 days 8 hrs ago0xcbd9b2daca48efaf1ccc6f87279a6c047b9f12da  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.001103781
0xa22f0d8a3f608e58395a78ba9aa9973280841f7ef681916c409fbe9354002ee93 days 9 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000263125
0x1378afe7aadbdbd40f064f6e37680d3ac9262d26f938bc3e5b887ddbfc7ad3353 days 11 hrs agoGate.io_1  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000248325
0xb438ac0551ced8af4c631b76ca4aca792399210bb4ad0acee962e9c9c55fdf703 days 11 hrs agoGate.io_3  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.0002487474
0xeff2080dcbfb2923d0cd3b08bf98de8e497df766bb8e25164303e2a9897fd3a43 days 12 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000301
0xeb9c2fd365177c10ffbcc4109425b2edbafdc5da5d22bd34a831546b8d3c0ae43 days 19 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000579579
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 Internal Transactions as a result of Contract Execution
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Warning: The Compiled Contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity) SolidityCompiler Bugs.

Contract Source Code Verified (Exact Match)
Contract Name: QBT
Compiler Text: v0.4.24+commit.e67f0147
Optimization Enabled: No
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity ^0.4.24;

/**
 * Math operations with safety checks
 */
contract SafeMath {
  function safeMul(uint256 a, uint256 b) internal returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function safeDiv(uint256 a, uint256 b) internal returns (uint256) {
    assert(b > 0);
    uint256 c = a / b;
    assert(a == b * c + a % b);
    return c;
  }

  function safeSub(uint256 a, uint256 b) internal returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function safeAdd(uint256 a, uint256 b) internal returns (uint256) {
    uint256 c = a + b;
    assert(c>=a && c>=b);
    return c;
  }

  function assert(bool assertion) internal {
      require(assertion);
  }
}

contract QBT is SafeMath{
    string public name = "QBT";
    string public symbol = "QBT";
    uint8 public decimals = 18;
    uint256 public totalSupply = 100000000 * 10 ** uint(decimals);
	address public owner;

    /* This creates an array with all balances */
    mapping (address => uint256) public balanceOf;
    mapping (address => mapping (address => uint256)) public allowance;

    /* This generates a public event on the blockchain that will notify clients */
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed tokenOwner, address indexed spender, uint tokens);


    /* Initializes contract with initial supply tokens to the creator of the contract */
    function QBT() {
        balanceOf[msg.sender] = totalSupply;              // Give the creator all initial tokens
		owner = msg.sender;
    }

    /* Send coins */
    function transfer(address _to, uint256 _value) {
        require(_to != 0x0);                              // Prevent transfer to 0x0 address. Use burn() instead
		require(_value > 0); 
        require(balanceOf[msg.sender] >= _value);           // Check if the sender has enough
        require(balanceOf[_to] + _value >= balanceOf[_to]); // Check for overflows
        balanceOf[msg.sender] = SafeMath.safeSub(balanceOf[msg.sender], _value);                     // Subtract from the sender
        balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value);                            // Add the same to the recipient
        Transfer(msg.sender, _to, _value);                   // Notify anyone listening that this transfer took place
    }

    /* Allow another contract to spend some tokens in your behalf */
    function approve(address _spender, uint256 _value) returns (bool success) {
		require(_value > 0); 
        allowance[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }
       
    /* A contract attempts to get the coins */
    function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
        require(_to != 0x0);                              // Prevent transfer to 0x0 address. Use burn() instead
		require(_value > 0); 
        require(balanceOf[msg.sender] >= _value);           // Check if the sender has enough
        require(balanceOf[_to] + _value >= balanceOf[_to]); // Check for overflows
        require(_value <= allowance[_from][msg.sender]);     // Check allowance
        balanceOf[_from] = SafeMath.safeSub(balanceOf[_from], _value);                           // Subtract from the sender
        balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value);                             // Add the same to the recipient
        allowance[_from][msg.sender] = SafeMath.safeSub(allowance[_from][msg.sender], _value);
        Transfer(_from, _to, _value);
        return true;
    }
}

    Contract ABI  
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","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":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"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":"tokenOwner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"tokens","type":"uint256"}],"name":"Approval","type":"event"}]

  Contract Creation Code Switch To Opcodes View
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   Swarm Source:
bzzr://02bdab0219e5297d605bc11a8f6f285d457e8ee8abd3fd206f7a490d7c572b46

 

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