ETH Price: $2,333.08 (-0.39%)

Contract

0x5Cf04716BA20127F1E2297AdDCf4B5035000c9eb
 
Transaction Hash
Method
Block
From
To
0x95a036f79e146ccf0101613c5a23614711e12966cc7ebb15389babcc4310b412 Transfer(pending)2024-09-08 22:17:5342 hrs ago1725833873IN
NKN: NKN Token
0 ETH(Pending)(Pending)
Approve207208402024-09-10 14:35:231 hr ago1725978923IN
NKN: NKN Token
0 ETH0.000339067.27940981
Transfer207203782024-09-10 13:01:353 hrs ago1725973295IN
NKN: NKN Token
0 ETH0.000288577.78482803
Transfer207203242024-09-10 12:50:353 hrs ago1725972635IN
NKN: NKN Token
0 ETH0.000358519.67477744
Transfer207202082024-09-10 12:26:594 hrs ago1725971219IN
NKN: NKN Token
0 ETH0.000493869.11919784
Transfer207180812024-09-10 5:18:4711 hrs ago1725945527IN
NKN: NKN Token
0 ETH0.0000791.6
Transfer207180042024-09-10 5:02:5911 hrs ago1725944579IN
NKN: NKN Token
0 ETH0.000189433.49784416
Transfer207175022024-09-10 3:22:1113 hrs ago1725938531IN
NKN: NKN Token
0 ETH0.000064532
Transfer207174862024-09-10 3:18:5913 hrs ago1725938339IN
NKN: NKN Token
0 ETH0.000111832.26530948
Transfer207174512024-09-10 3:11:5913 hrs ago1725937919IN
NKN: NKN Token
0 ETH0.000229494.23764266
Transfer207156902024-09-09 21:18:2319 hrs ago1725916703IN
NKN: NKN Token
0 ETH0.000217186.73042429
Transfer207124352024-09-09 10:23:3530 hrs ago1725877415IN
NKN: NKN Token
0 ETH0.000085492.64959714
Transfer207115692024-09-09 7:29:2333 hrs ago1725866963IN
NKN: NKN Token
0 ETH0.000081412.5240267
Transfer207115462024-09-09 7:24:4733 hrs ago1725866687IN
NKN: NKN Token
0 ETH0.000125963.39919541
Transfer207107402024-09-09 4:42:5935 hrs ago1725856979IN
NKN: NKN Token
0 ETH0.000067231.36148522
Approve207107172024-09-09 4:38:2335 hrs ago1725856703IN
NKN: NKN Token
0 ETH0.000130292.7937287
Transfer207099622024-09-09 2:07:1138 hrs ago1725847631IN
NKN: NKN Token
0 ETH0.000146373.94884118
Transfer207098812024-09-09 1:50:5938 hrs ago1725846659IN
NKN: NKN Token
0 ETH0.00007171.82534511
Transfer207098572024-09-09 1:46:1138 hrs ago1725846371IN
NKN: NKN Token
0 ETH0.000064532
Transfer207097582024-09-09 1:26:2339 hrs ago1725845183IN
NKN: NKN Token
0 ETH0.000095721.76708534
Transfer207097302024-09-09 1:20:4739 hrs ago1725844847IN
NKN: NKN Token
0 ETH0.000064532
Transfer207090132024-09-08 22:56:2341 hrs ago1725836183IN
NKN: NKN Token
0 ETH0.000159662.94825631
Transfer207084702024-09-08 21:07:1143 hrs ago1725829631IN
NKN: NKN Token
0 ETH0.000108292
Transfer207072912024-09-08 17:09:1147 hrs ago1725815351IN
NKN: NKN Token
0 ETH0.000045581.41373595
Transfer207068592024-09-08 15:42:232 days ago1725810143IN
NKN: NKN Token
0 ETH0.000153472.83390951
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Contract Source Code Verified (Exact Match)

Contract Name:
NKNToken

Compiler Version
v0.4.25+commit.59dbf8f1

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2019-01-08
*/

pragma solidity ^0.4.24;

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
	function mul(uint256 a, uint256 b) internal pure returns (uint256) {
		if (a == 0) {
			return 0;
		}
		uint256 c = a * b;
		assert(c / a == b);
		return c;
	}

	function div(uint256 a, uint256 b) internal pure returns (uint256) {
		assert(b > 0); 
		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;
	}
}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 {
	uint256 public totalSupply;
	function balanceOf(address who) public view returns (uint256);
	function transfer(address to, uint256 value) public returns (bool);
	function allowance(address owner, address spender) public view returns (uint256);
	function transferFrom(address from, address to, uint256 value) public returns (bool);
	function approve(address spender, uint256 value) public returns (bool);

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

contract Owned {
	address public owner;

	event OwnershipTransferred(address indexed _from, address indexed _to);

	constructor() public {
		owner = msg.sender;
	}

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

	function transferOwnership(address _owner) onlyOwner public {
		require(_owner != address(0));
		owner = _owner;

		emit OwnershipTransferred(owner, _owner);
	}
}

contract ERC20Token is ERC20, Owned {
	using SafeMath for uint256;

	mapping(address => uint256) balances;
	mapping(address => mapping (address => uint256)) allowed;


	// True if transfers are allowed
	bool public transferable = false;

	modifier canTransfer() {
		require(transferable == true);
		_;
	}

	function setTransferable(bool _transferable) onlyOwner public {
		transferable = _transferable;
	}

	/**
	 * @dev transfer token for a specified address
	 * @param _to The address to transfer to.
	 * @param _value The amount to be transferred.
	 */
	function transfer(address _to, uint256 _value) canTransfer public returns (bool) {
		require(_to != address(0));
		require(_value <= balances[msg.sender]);

		balances[msg.sender] = balances[msg.sender].sub(_value);
		balances[_to] = balances[_to].add(_value);
		emit Transfer(msg.sender, _to, _value);
		return true;
	}

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

	/**
	* @dev Transfer tokens from one address to another
	* @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) canTransfer public returns (bool) {
		require(_to != address(0));
		require(_value <= balances[_from]);
		require(_value <= allowed[_from][msg.sender]);

		balances[_from] = balances[_from].sub(_value);
		balances[_to] = balances[_to].add(_value);
		allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
		emit Transfer(_from, _to, _value);
		return true;
	}

	// Allow `_spender` to withdraw from your account, multiple times.
	function approve(address _spender, uint _value) public returns (bool success) {
		// To change the approve amount you first have to reduce the addresses`
		//  allowance to zero by calling `approve(_spender, 0)` if it is not
		//  already 0 to mitigate the race condition described here:
		//  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
		if ((_value != 0) && (allowed[msg.sender][_spender] != 0)) {
			revert();
		}
		allowed[msg.sender][_spender] = _value;
		emit Approval(msg.sender, _spender, _value);
		return true;
	}

	/**
	 * @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];
	}

	function () public payable {
		revert();
	}
}

contract NKNToken is ERC20Token{
	string public name = "NKN";
	string public symbol = "NKN";
	uint8 public decimals = 18;

	uint256 public totalSupplyCap = 7 * 10**8 * 10**uint256(decimals);

	constructor(address _issuer) public {
		totalSupply = totalSupplyCap;
		balances[_issuer] = totalSupplyCap;
		emit Transfer(address(0), _issuer, totalSupplyCap);
	}
}

Contract Security Audit

Contract ABI

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Deployed Bytecode

0x6080604052600436106100d0576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806306fdde03146100d5578063095ea7b31461016557806318160ddd146101ca57806323b872dd146101f5578063313ce5671461027a57806370a08231146102ab5780638da5cb5b1461030257806392ff0d311461035957806395d89b41146103885780639cd2370714610418578063a9059cbb14610447578063bb102aea146104ac578063dd62ed3e146104d7578063f2fde38b1461054e575b600080fd5b3480156100e157600080fd5b506100ea610591565b6040518080602001828103825283818151815260200191508051906020019080838360005b8381101561012a57808201518184015260208101905061010f565b50505050905090810190601f1680156101575780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b34801561017157600080fd5b506101b0600480360381019080803573ffffffffffffffffffffffffffffffffffffffff1690602001909291908035906020019092919050505061062f565b604051808215151515815260200191505060405180910390f35b3480156101d657600080fd5b506101df6107b8565b6040518082815260200191505060405180910390f35b34801561020157600080fd5b50610260600480360381019080803573ffffffffffffffffffffffffffffffffffffffff169060200190929190803573ffffffffffffffffffffffffffffffffffffffff169060200190929190803590602001909291905050506107be565b604051808215151515815260200191505060405180910390f35b34801561028657600080fd5b5061028f610ba0565b604051808260ff1660ff16815260200191505060405180910390f35b3480156102b757600080fd5b506102ec600480360381019080803573ffffffffffffffffffffffffffffffffffffffff169060200190929190505050610bb3565b6040518082815260200191505060405180910390f35b34801561030e57600080fd5b50610317610bfc565b604051808273ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff16815260200191505060405180910390f35b34801561036557600080fd5b5061036e610c22565b604051808215151515815260200191505060405180910390f35b34801561039457600080fd5b5061039d610c35565b6040518080602001828103825283818151815260200191508051906020019080838360005b838110156103dd5780820151818401526020810190506103c2565b50505050905090810190601f16801561040a5780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b34801561042457600080fd5b50610445600480360381019080803515159060200190929190505050610cd3565b005b34801561045357600080fd5b50610492600480360381019080803573ffffffffffffffffffffffffffffffffffffffff16906020019092919080359060200190929190505050610d4c565b604051808215151515815260200191505060405180910390f35b3480156104b857600080fd5b506104c1610f93565b6040518082815260200191505060405180910390f35b3480156104e357600080fd5b50610538600480360381019080803573ffffffffffffffffffffffffffffffffffffffff169060200190929190803573ffffffffffffffffffffffffffffffffffffffff169060200190929190505050610f99565b6040518082815260200191505060405180910390f35b34801561055a57600080fd5b5061058f600480360381019080803573ffffffffffffffffffffffffffffffffffffffff169060200190929190505050611020565b005b60058054600181600116156101000203166002900480601f0160208091040260200160405190810160405280929190818152602001828054600181600116156101000203166002900480156106275780601f106105fc57610100808354040283529160200191610627565b820191906000526020600020905b81548152906001019060200180831161060a57829003601f168201915b505050505081565b60008082141580156106be57506000600360003373ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff16815260200190815260200160002060008573ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff1681526020019081526020016000205414155b156106c857600080fd5b81600360003373ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff16815260200190815260200160002060008573ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff168152602001908152602001600020819055508273ffffffffffffffffffffffffffffffffffffffff163373ffffffffffffffffffffffffffffffffffffffff167f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925846040518082815260200191505060405180910390a36001905092915050565b60005481565b600060011515600460009054906101000a900460ff1615151415156107e257600080fd5b600073ffffffffffffffffffffffffffffffffffffffff168373ffffffffffffffffffffffffffffffffffffffff161415151561081e57600080fd5b600260008573ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff16815260200190815260200160002054821115151561086c57600080fd5b600360008573ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff16815260200190815260200160002060003373ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff1681526020019081526020016000205482111515156108f757600080fd5b61094982600260008773ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff1681526020019081526020016000205461117890919063ffffffff16565b600260008673ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff168152602001908152602001600020819055506109de82600260008673ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff1681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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000071eb2c89999caa5326bd41c0b83b728bdc55fd10

-----Decoded View---------------
Arg [0] : _issuer (address): 0x71eB2C89999CAA5326bd41c0b83B728bDc55fd10

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000071eb2c89999caa5326bd41c0b83b728bdc55fd10


Swarm Source

bzzr://319bcad141306cdf9a62072adb297896e711e5d787b1967ab2818fcb63177fca

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OVERVIEW

NKN is the new kind of P2P network connectivity protocol & ecosystem powered by a novel public blockchain.

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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.