Contract Overview
Balance: 0 Ether
Ether Value: $0
Transactions: 499 txns
Token Tracker: QBT (QBT)
Misc:
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Contract Creator: 0x16a0e0e768c7a9e7d408c201396340afdde7d00eat txn 0xdf09d0d5599cfdfcede362797317f96a46c5e615b6507562a6e5d89ef9eb28cc
 Latest 25 transactions from a total of 499 transactions

TxHash Age From To Value [TxFee]
0x55798eee2fff9deaf2145ce818871fa5b4f6e639ff255fd3bef85e0648efcb571 hr 14 mins ago0xba7b446bd76be183d9b7de99256dc59f8889d5e4  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000090504525
0xc2a5b7b44c6242cea32880deb1a7867cdf836f22865c3d4bbbb8413855a27b1a7 hrs 55 mins ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000263445
0xcd672130d6fae2a8d16ea3c8e2fd3c79155f1b2ad2e66f678a846400d6e83a2a9 hrs 55 mins ago0xe2716575e6221c2e8703af91dbe03ce223a7c216  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000157927
0xf16e359c7a36e84d372de7bb64e6747aafe8065d598cb2f4ac773abd5031a26c11 hrs 23 mins ago0x01d5a9b768249690d4c84e7d830eaf6a4806a94f  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000263375
0x27be47b9eece2cc5778f289207562ecb9da2743bd145fda71105f89eb0b52a5d11 hrs 28 mins ago0xdc4b9c05d807dbf6f429cff07bc79502fde212b0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.001105125
0x2414be4772685deff01539c74a3137dc07b56922e960a34d57523ebff6dc43d413 hrs 38 mins ago0xdc4b9c05d807dbf6f429cff07bc79502fde212b0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.001106469
0x6872d3642e48e77685f09d1cbe415b57a0da039a1c0762dbc8b08bd919bf09bc1 day 6 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000157683
0x723461608853251ac11607952925fc5c6a25fb6dc71790bbcf65c97f0dd623da1 day 11 hrs ago0xdc4b9c05d807dbf6f429cff07bc79502fde212b0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.001105125
0x6b0d3de244d395a94e814c0af0cc18623465f73338a48353bdfbc6c1da36adcb2 days 5 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000157875
0xba75403d93db5dcd2d970a89f19809cc199bc6eb7880cdf0057b3f4e51f518005 days 12 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.00037689
0x4ceabb7ecaaa54cbee6daaa97b312e51e0b97d0047df7549157088475784bc705 days 16 hrs ago0x4d8eb6ff885233a68303ef20a4acc0212c84747e  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000067875
0xcb45c3a9738a1406322f364fcdd87b134931c1b4f85ee4956003d25980c4ffb95 days 16 hrs ago0xfc9e069b83c9350bbc07c48ae2f95932e1540d5f  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000067683
0xab1fa3b804e78cb814bb2d71359eab1ac0a5f804f32ee86fbbfb9b742b0f1d3e6 days 12 hrs agoGate.io_1  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000457280109
0x83c2bf37102596c377c258a86a91d2addc0b24a44a55cc9a2461714af849e7c07 days 15 hrs ago0x6cfffbe3dd2539085becb326dee2012b0ed5beb1  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000187485
0xa12b916bfc89700a55a26c09e291537cdd4256046379d75ea6bc9f47219aab278 days 10 hrs ago0x78dd7f1c1d9b1ca3c59bd2710f15be1ccc075aab  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.003416465
0x7944e474e69a2cef84ccb7f20b092b45983d1fffe8086453ee608c53d09eef158 days 11 hrs ago0x5091c539f599bd5096be2069c03c5f018014d4e1  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.00037497
0xd52cfba69124f4c0c70a4239be9e679ca05245be86904b16e180cdbe8efe6c718 days 11 hrs ago0x6837777bf80bc388e3ab9331ad2b18fa8a58cdee  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000262479
0x4c85af4288c6394f8e1d675d5cd26e4f4ff2d505179c43fa8dffe8a97b091ee78 days 11 hrs ago0x6837777bf80bc388e3ab9331ad2b18fa8a58cdee  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000299976
0x972f9a1f4bc85ef9e12915dae541219c028f2086c47db83a47be329c15561a5b10 days 10 hrs ago0x85d67d509609c231bdec9bdf76061293886b1b97  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000112683
0x478bccb6de0124aeaebbaa343d4c2350eda2d042fdbbde6fb5a3e65c3536aa9710 days 10 hrs agoGate.io_1  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.0003469026
0xb00542ae596218d0598d481552f7d21f31646e200bb31828bde5d6edfb921bbd11 days 8 hrs ago0x01a3cbdf007523b6c61549375e5757e0002c7078  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.00007525
0x51b58e8843282e8ad8acdeef4a18b6870d5d4887fa837e9e00ce773d0715074f11 days 8 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000112299
0x5ea72aefe5c8bc87b7186b1ffb4b5f6610425a1c9274441f7961e4e7a266b6a211 days 8 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000209988
0x055a51692ace53cbdea442878098aba66cffc78b3e1500fb659b42ff98d8b03211 days 8 hrs ago0xd5ac835e04552ac63747ba5dfaa20d017c5d6ea0  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000157683
0x441d18c1aeaaca7acdf5ae393edc663a2d7084ddc16f7208fdeaec0a71d03ae611 days 18 hrs ago0x3502de26a6867b24e5630b2e25bd384da097ad06  IN   0x4b4fb2f2dc64a2cf2afbc8119ca2eabbd99a575b0 Ether0.000048076
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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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