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Contract

0x74f887f5b336704Be1591f8a2F2e419767134316
 

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Transfer162867672022-12-29 0:14:23717 days ago1672272863IN
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0 ETH0.0007263613.28826734
Transfer103718322020-07-01 6:08:291628 days ago1593583709IN
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0 ETH0.001565542
Transfer103715862020-07-01 5:10:511628 days ago1593580251IN
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0 ETH0.0011182230
Transfer103714602020-07-01 4:42:331628 days ago1593578553IN
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0 ETH0.0023517945
Transfer103649412020-06-30 4:20:191629 days ago1593490819IN
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0 ETH0.0010468747.00000145
Transfer103135782020-06-22 5:07:021637 days ago1592802422IN
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0 ETH0.0011554931
Transfer103084752020-06-21 10:07:071637 days ago1592734027IN
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0 ETH0.000998219.10000145
Transfer103074052020-06-21 6:13:381638 days ago1592720018IN
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0 ETH0.0008945724
Transfer103072322020-06-21 5:27:431638 days ago1592717263IN
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0 ETH0.000708219
Transfer103071832020-06-21 5:17:131638 days ago1592716633IN
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0 ETH0.0009929719
Transfer103008532020-06-20 5:47:211639 days ago1592632041IN
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0 ETH0.0011654422.3
Transfer103006482020-06-20 4:59:081639 days ago1592629148IN
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0 ETH0.0011497622
Transfer86695062019-10-03 13:36:071899 days ago1570109767IN
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0 ETH0.0005621715
Transfer84317722019-08-27 10:56:421936 days ago1566903402IN
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0 ETH0.0004497312
Transfer84262602019-08-26 13:59:481937 days ago1566827988IN
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0 ETH0.0008347915.9075
Transfer84247382019-08-26 8:21:151938 days ago1566807675IN
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0 ETH0.0005389314.38
Transfer83857972019-08-20 7:03:021944 days ago1566284582IN
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0 ETH0.0003747810
Transfer83724972019-08-18 5:21:511946 days ago1566105711IN
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0 ETH0.000346356.6
Transfer83537922019-08-15 7:33:091949 days ago1565854389IN
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0 ETH0.000944618
Transfer83485282019-08-14 12:04:421949 days ago1565784282IN
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0 ETH0.000207813.96
Transfer83475132019-08-14 8:20:561950 days ago1565770856IN
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0 ETH0.000367347
Transfer83462052019-08-14 3:31:501950 days ago1565753510IN
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0 ETH0.000224866
Transfer83460362019-08-14 2:56:001950 days ago1565751360IN
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0 ETH0.000165184.4
Transfer83416952019-08-13 10:32:431950 days ago1565692363IN
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0 ETH0.000346356.6
Transfer83414982019-08-13 9:52:071950 days ago1565689927IN
0x74f887f5...767134316
0 ETH0.000367347
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Contract Source Code Verified (Exact Match)

Contract Name:
KNB

Compiler Version
v0.4.25+commit.59dbf8f1

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at Etherscan.io on 2019-07-28
*/

pragma solidity ^0.4.25;

library SafeMath {

    /**
    * @dev Multiplies two numbers, throws on overflow.
    */
    function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
        // Gas optimization: this is cheaper than asserting 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (a == 0) {
            return 0;
        }

        c = a * b;
        require(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;
        // require(a == b * c + a % b); // There is no case in which this doesn't hold
        return a / b;
    }

    /**
    * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
    */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a);
        return a - b;
    }

    /**
    * @dev Adds two numbers, throws on overflow.
    */
    function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
        c = a + b;
        require(c >= a);
        return c;
    }
}

library Address {

    /**
     * @dev Returns true if `account` is a contract.
     *
     * This test is non-exhaustive, and there may be false-negatives: during the
     * execution of a contract's constructor, its address will be reported as
     * not containing a contract.
     *
     * > It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies in extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }
}

contract IERC20Receiver {

    function onERC20Received(address from, uint256 value) public returns (bytes4);

}

/**
 * @title ERC20 interface
 * @dev see https://eips.ethereum.org/EIPS/eip-20
 */
interface IERC20 {

    function transfer(address to, uint256 value) public returns (bool);

    function approve(address spender, uint256 value) public returns (bool);

    function transferFrom(address from, address to, uint256 value) public returns (bool);

    function totalSupply() public view returns (uint256);

    function balanceOf(address who) public view returns (uint256);

    function allowance(address owner, address spender) public view returns (uint256);

    event Transfer(address indexed from, address indexed to, uint256 value);

    event Approval(address indexed owner, address indexed spender, uint256 value);
}

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * https://eips.ethereum.org/EIPS/eip-20
 * Originally based on code by FirstBlood:
 * https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 *
 * This implementation emits additional Approval events, allowing applications to reconstruct the allowance status for
 * all accounts just by listening to said events. Note that this isn't required by the specification, and other
 * compliant implementations may not do it.
 */

contract ERC20 is IERC20 {

    using SafeMath for uint256;
    using Address for address;

    mapping(address => uint256) internal _balances;

    mapping(address => mapping(address => uint256)) private _allowed;

    uint256 internal _totalSupply;

    /**
     * @dev Total number of tokens in existence.
     */
    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev Gets the balance of the specified address.
     * @param owner The address to query the balance of.
     * @return A uint256 representing the amount owned by the passed address.
     */
    function balanceOf(address owner) public view returns (uint256) {
        return _balances[owner];
    }

    /**
     * @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 Transfer token to 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) {
        _transfer(msg.sender, 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) {
        _approve(msg.sender, spender, value);
        return true;
    }

    /**
     * @dev Transfer tokens from one address to another.
     * Note that while this function emits an Approval event, this is not required as per the specification,
     * and other compliant implementations may not emit the event.
     * @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) {
        _transfer(from, to, value);
        _approve(from, msg.sender, _allowed[from][msg.sender].sub(value));
        return true;
    }

    /**
     * @dev Increase the amount of tokens that an owner allowed to a spender.
     * approve should be called when _allowed[msg.sender][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
     * Emits an Approval event.
     * @param spender The address which will spend the funds.
     * @param addedValue The amount of tokens to increase the allowance by.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowed[msg.sender][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Decrease the amount of tokens that an owner allowed to a spender.
     * approve should be called when _allowed[msg.sender][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
     * Emits an Approval event.
     * @param spender The address which will spend the funds.
     * @param subtractedValue The amount of tokens to decrease the allowance by.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowed[msg.sender][spender].sub(subtractedValue));
        return true;
    }

    /**
     * @dev Transfer token for a specified addresses.
     * @param from The address to transfer from.
     * @param to The address to transfer to.
     * @param value The amount to be transferred.
     */
    function _transfer(address from, address to, uint256 value) internal {
        require(to != address(0));
        _balances[from] = _balances[from].sub(value);
        _balances[to] = _balances[to].add(value);
        if (to.isContract()) {
            IERC20Receiver(to).onERC20Received(from, value);
        }
        emit Transfer(from, to, value);
    }

    /**
     * @dev Internal function that burns an amount of the token of a given
     * account.
     * @param account The account whose tokens will be burnt.
     * @param value The amount that will be burnt.
     */
    function _burn(address account, uint256 value) internal {
        require(account != address(0));

        _totalSupply = _totalSupply.sub(value);
        _balances[account] = _balances[account].sub(value);
        emit Transfer(account, address(0), value);
    }

    function burn(uint256 value) public {
        _burn(msg.sender, value);
    }

    /**
     * @dev Approve an address to spend another addresses' tokens.
     * @param owner The address that owns the tokens.
     * @param spender The address that will spend the tokens.
     * @param value The number of tokens that can be spent.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        require(spender != address(0));
        require(owner != address(0));

        _allowed[owner][spender] = value;
        emit Approval(owner, spender, value);
    }

    /**
     * @dev Internal function that burns an amount of the token of a given
     * account, deducting from the sender's allowance for said account. Uses the
     * internal burn function.
     * Emits an Approval event (reflecting the reduced allowance).
     * @param account The account whose tokens will be burnt.
     * @param value The amount that will be burnt.
     */
    function _burnFrom(address account, uint256 value) internal {
        _burn(account, value);
        _approve(account, msg.sender, _allowed[account][msg.sender].sub(value));
    }
}

contract KNB is ERC20 {

    string public name;
    string public symbol;
    uint8 public decimals;
    address public owner;

    /**
        * @dev Constructor function
    */

    constructor (string _name, string _symbol, uint8 _decimals, uint256 totalSupply) public {
        owner = msg.sender;
        name = _name;
        symbol = _symbol;
        decimals = _decimals;
        _totalSupply = totalSupply;
        _balances[msg.sender] = totalSupply;
    }
}

Contract Security Audit

Contract ABI

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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)

000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000c0000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000030e4f9b40000000000000000000000000000000000000000000000000000000000000000074b616e6f6269730000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034b4e420000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _name (string): Kanobis
Arg [1] : _symbol (string): KNB
Arg [2] : _decimals (uint8): 2
Arg [3] : totalSupply (uint256): 210000000000

-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [3] : 00000000000000000000000000000000000000000000000000000030e4f9b400
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [5] : 4b616e6f62697300000000000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [7] : 4b4e420000000000000000000000000000000000000000000000000000000000


Deployed Bytecode Sourcemap

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Swarm Source

bzzr://57a110a9f70dcf81acd3b0d088cded6ac19e5689e2560f213933ae4371c2eb1e

Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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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.