ETH Price: $3,136.40 (-5.39%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

731,177 ( 0.034%)

Market

Price

$23.85 @ 0.007604 ETH (-6.05%)

Onchain Market Cap

$23,850,000,000.00

Circulating Supply Market Cap

$15,234,452,210.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
27.44764362 LINK

Value
$654.63 ( ~0.208719959614689 Eth) [0.0000%]
0xEa77a0Dc1ea0De9c230390461D500792f4744564
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OVERVIEW

A blockchain-based middleware, acting as a bridge between cryptocurrency smart contracts, data feeds, APIs and traditional bank account payments.

Profitability / Loss

Since Initial Offer Price
:$0.11 21581.82% |ETH 0.0003846 1877.12%

Market

Volume (24H):$1,539,202,790.00
Market Capitalization:$15,234,452,210.00
Circulating Supply:638,099,970.00 LINK
Market Data Source: Coinmarketcap

ICO Information

ICO Start Date : Sep 19, 2017   
Total Cap : $32,000,000
ICO Price  : $0.11 | 0.0003846 ETH
Country : USA

# Exchange Pair Price  24H Volume % Volume
1
Binance
LINK-USDT$23.73
0.0075535 Eth
$227,755,163.00
9,558,673.160 LINK
23.5287%
2
Coinbase Exchange
LINK-USD$23.70
0.0075505 Eth
$101,456,672.00
4,280,691.610 LINK
10.5370%
3
Bybit
LINK-USDT$23.71
0.0075478 Eth
$72,476,492.00
3,025,698.366 LINK
7.4478%
4
P2B
LINK-USDT$23.80
0.0075730 Eth
$38,594,390.00
1,621,306.820 LINK
3.9909%
5
Gate.io
LINK-USDT$23.68
0.0075437 Eth
$32,122,051.00
1,350,553.700 LINK
3.3244%
6
OKX
LINK-USDT$23.70
0.0075452 Eth
$30,186,642.00
1,264,011.985 LINK
3.1114%
7
DigiFinex
LINK-USDT$23.70
0.0075447 Eth
$28,289,434.00
1,193,774.820 LINK
2.9385%
8
Slex
LINK-USDT$23.77
0.0075686 Eth
$23,707,622.00
978,423.450 LINK
2.4084%
9
Azbit
LINK-USDT$23.76
0.0075629 Eth
$22,669,133.00
950,670.614 LINK
2.3401%
10
XT.COM
LINK-USDT$23.73
0.0075533 Eth
$22,609,375.00
947,579.490 LINK
2.3325%
11
KuCoin
LINK-USDT$23.70
0.0075443 Eth
$20,373,900.00
859,792.194 LINK
2.1164%
12
Coinstore
LINK-USDT$23.70
0.0075454 Eth
$18,558,014.00
776,286.030 LINK
1.9108%
13
Binance
LINK-FDUSD$23.69
0.0075419 Eth
$18,342,275.00
763,691.100 LINK
1.8798%
14
Bitunix
LINK-USDT$23.73
0.0075597 Eth
$18,034,798.00
759,774.120 LINK
1.8702%
15
HTX
LINK-USDT$23.74
0.0075574 Eth
$16,567,024.00
691,048.256 LINK
1.7010%
16
Kraken
LINK-USD$23.71
0.0075480 Eth
$16,158,367.00
681,559.571 LINK
1.6777%
17
Binance
LINK-USDC$23.71
0.0075485 Eth
$15,959,374.00
668,118.000 LINK
1.6446%
18
CoinW
LINK-USDT$23.71
0.0075492 Eth
$14,452,456.00
609,587.910 LINK
1.5005%
19
WhiteBIT
LINK-USDT$23.91
0.0076158 Eth
$13,434,869.00
561,818.910 LINK
1.3829%
20
BYDFi
LINK-USDT$23.72
0.0075527 Eth
$12,658,513.00
533,673.840 LINK
1.3136%
21
LATOKEN
LINK-USDT$23.72
0.0075556 Eth
$11,186,608.00
471,573.695 LINK
1.1608%
22
LBank
LINK-USDT$23.72
0.0075545 Eth
$11,121,895.00
468,888.570 LINK
1.1542%
23
Hotcoin
LINK-USDT$23.71
0.0075488 Eth
$10,282,665.00
433,699.480 LINK
1.0676%
24
Bitget
LINK-USDT$23.70
0.0075440 Eth
$9,868,917.00
414,289.185 LINK
1.0198%
25
QMall
LINK-USDT$23.82
0.0075775 Eth
$9,393,134.00
394,277.954 LINK
0.9705%
26
BTSE
LINK-USDT$23.93
0.0076146 Eth
$9,039,104.00
377,727.304 LINK
0.9298%
27
Coinbase Exchange
LINK-EUR$23.74
0.0075581 Eth
$8,582,583.00
361,548.050 LINK
0.8900%
28
Bitvavo
LINK-EUR$23.86
0.0075992 Eth
$7,357,677.00
308,352.295 LINK
0.7590%
29
Dex-Trade
LINK-USDT$23.72
0.0075501 Eth
$6,910,846.00
291,357.661 LINK
0.7172%
30
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.65
0.0075308 Eth
$5,787,099.00
244,009.002 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.6006%
31
FMCPAY
LINK-USDT$23.71
0.0075495 Eth
$5,663,334.00
233,885.612 LINK
0.5757%
32
CoinEx
LINK-USDT$23.72
0.0075563 Eth
$4,833,401.00
200,157.522 LINK
0.4927%
33
Coinbase Exchange
LINK-GBP$23.74
0.0075623 Eth
$3,808,316.00
160,390.560 LINK
0.3948%
34
PointPay
LINK-USDT$23.73
0.0075551 Eth
$3,622,638.00
151,461.638 LINK
0.3728%
35
Biconomy.com
LINK-USDT$23.75
0.0075644 Eth
$3,495,889.00
145,558.290 LINK
0.3583%
36
WhiteBIT
LINK-BTC$23.75
0.0075637 Eth
$2,918,849.00
122,901.880 LINK
0.3025%
37
WhiteBIT
LINK-TRY$23.82
0.0075861 Eth
$2,796,471.00
117,377.440 LINK
0.2889%
38
Binance
LINK-ETH$23.74
0.0075587 Eth
$2,734,807.00
114,744.530 LINK
0.2824%
39
Bitbank
LINK-JPY$23.89
0.0076077 Eth
$2,620,253.00
109,662.146 LINK
0.2699%
40
Kraken
LINK-USDT$23.79
0.0075750 Eth
$2,612,155.00
109,787.660 LINK
0.2702%
41
Kraken
LINK-EUR$23.79
0.0075742 Eth
$2,550,694.00
107,216.514 LINK
0.2639%
42
Phemex
LINK-USDT$23.71
0.0075469 Eth
$2,244,392.00
94,662.310 LINK
0.2330%
43
BigONE
LINK-USDT$23.71
0.0075496 Eth
$1,982,566.00
83,608.790 LINK
0.2058%
44
FMCPAY
LINK-BTC$23.71
0.0075504 Eth
$1,932,907.00
80,227.400 LINK
0.1975%
45
FMCPAY
LINK-ETH$23.89
0.0076025 Eth
$1,892,832.00
79,293.120 LINK
0.1952%
46
BitStorage
LINK-USDT$23.83
0.0075869 Eth
$1,755,412.00
73,668.900 LINK
0.1813%
47
AscendEX (BitMax)
LINK-USDT$23.82
0.0075835 Eth
$1,718,396.00
72,142.600 LINK
0.1776%
48
WhiteBIT
LINK-EUR$23.74
0.0075607 Eth
$1,645,279.00
69,290.290 LINK
0.1706%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.70
0.0075510 Eth
$1,527,463.00
64,557.196 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1589%
50
OKX
LINK-USDC$23.70
0.0075469 Eth
$1,513,651.00
62,064.536 LINK
0.1528%
51
Binance
LINK-TRY$23.82
0.0075839 Eth
$1,464,663.00
60,415.560 LINK
0.1487%
52
EarnBIT
LINK-USDT$23.79
0.0075719 Eth
$1,460,336.00
61,021.319 LINK
0.1502%
53
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.77
0.0075669 Eth
$1,420,092.00
59,266.362 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1459%
54
EXMO
LINK-USDT$23.83
0.0075885 Eth
$1,402,679.00
58,853.465 LINK
0.1449%
55
Binance
LINK-EUR$23.76
0.0075630 Eth
$1,343,733.00
55,928.350 LINK
0.1377%
56
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.78
0.0075687 Eth
$1,302,924.00
53,690.026 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1322%
57
Bybit
LINK-USDC$23.72
0.0075511 Eth
$1,285,614.00
53,845.844 LINK
0.1325%
58
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.75
0.0075595 Eth
$1,270,605.00
53,653.607 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1321%
59
tanX
LINK-USDC$23.71
0.0075531 Eth
$1,270,547.00
52,300.630 LINK
0.1287%
60
Gemini
LINK-USD$23.72
0.0075521 Eth
$1,248,338.00
52,626.517 LINK
0.1295%
61
QMall
LINK-USDC$23.98
0.0076295 Eth
$1,238,889.00
51,792.926 LINK
0.1275%
62
Nonkyc.io
LINK-USDT$23.63
0.0075276 Eth
$1,186,954.00
50,462.064 LINK
0.1242%
63
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.92
0.0076157 Eth
$1,053,040.00
44,317.207 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1091%
64
Trubit
LINK-USDT$23.70
0.0075460 Eth
$974,978.00
40,553.610 LINK
0.0998%
65
HashKey Exchange
LINK-USD$23.83
0.0075862 Eth
$948,481.00
39,412.620 LINK
0.0970%
66
itBit
LINK-USD$23.70
0.0075487 Eth
$934,169.00
39,416.432 LINK
0.0970%
67
Coinbase Exchange
LINK-USDT$23.77
0.0075661 Eth
$899,036.00
37,827.705 LINK
0.0931%
68
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.84
0.0075938 Eth
$894,657.00
904,584.043 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.2266%
69
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.76
0.0075657 Eth
$884,595.00
36,833.953 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0907%
70
XT.COM
LINK-ETH$23.72
0.0075513 Eth
$762,042.00
31,942.330 LINK
0.0786%
71
LATOKEN
LINK-BTC$23.70
0.0075481 Eth
$733,403.00
30,947.475 LINK
0.0762%
72
BitStorage
LINK-ETH$23.89
0.0076021 Eth
$625,254.00
26,169.160 LINK
0.0644%
73
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.74
0.0075622 Eth
$624,104.00
26,206.815 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0645%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.70
0.0075510 Eth
$601,045.00
25,024.524 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0616%
75
Coinbase Exchange
LINK-BTC$23.76
0.0075662 Eth
$543,509.00
22,879.690 LINK
0.0563%
76
Coinbase Exchange
LINK-ETH$23.93
0.0076206 Eth
$530,112.00
22,148.170 LINK
0.0545%
77
Slex
LINK-ETH$23.80
0.0075732 Eth
$438,236.00
18,361.420 LINK
0.0452%
78
KuCoin
LINK-USDC$23.76
0.0075657 Eth
$427,843.00
18,004.276 LINK
0.0443%
79
Binance
LINK-BNB$23.83
0.0075806 Eth
$414,980.00
16,769.950 LINK
0.0413%
80
Hotcoin
LINK-BTC$23.73
0.0075556 Eth
$413,040.00
17,406.880 LINK
0.0428%
81
BitDelta
LINK-USDT$23.76
0.0075676 Eth
$412,704.00
17,222.000 LINK
0.0424%
82
Kraken
LINK-GBP$23.73
0.0075553 Eth
$411,625.00
17,345.562 LINK
0.0427%
83
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.69
0.0075460 Eth
$363,597.00
15,028.690 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0370%
84
BYDFi
LINK-USDC$23.86
0.0076082 Eth
$340,376.00
14,264.850 LINK
0.0351%
85
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.84
0.0075903 Eth
$316,165.00
13,132.753 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0323%
86
Mercado Bitcoin
LINK-BRL$23.85
0.0075934 Eth
$305,123.00
12,794.001 LINK
0.0315%
87
Bitkub
LINK-THB$23.94
0.0076231 Eth
$303,666.00
12,684.068 LINK
0.0312%
88
BitMart
LINK-BTC$23.78
0.0075693 Eth
$281,209.00
11,827.000 LINK
0.0291%
89
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.74
0.0075598 Eth
$280,566.00
11,770.503 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0290%
90
PointPay
LINK-BTC$23.73
0.0075529 Eth
$279,858.00
11,666.891 LINK
0.0287%
91
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.66
0.0075311 Eth
$260,078.00
263,543.106 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.6487%
92
KuCoin
LINK-BTC$23.73
0.0075539 Eth
$251,460.00
10,598.393 LINK
0.0261%
93
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.81
0.0075839 Eth
$216,811.00
9,091.851 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0224%
94
Bitso
LINK-USD$23.84
0.0075905 Eth
$199,567.00
8,369.797 LINK
0.0206%
95
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.66
0.0075319 Eth
$188,539.00
7,894.578 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0194%
96
Sushiswap
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.79
0.0075774 Eth
$182,601.00
7,690.979 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0189%
97
Binance US
LINK-USDT$23.76
0.0075747 Eth
$178,542.00
7,514.361 LINK
0.0185%
98
Foxbit
LINK-BRL$23.87
0.0075988 Eth
$141,337.00
5,929.559 LINK
0.0146%
99
CoinTR
LINK-TRY$23.87
0.0076005 Eth
$139,919.00
5,818.080 LINK
0.0143%
100
Dex-Trade
LINK-ETH$23.92
0.0076080 Eth
$84,763.00
3,544.170 LINK
0.0087%

Contract Source Code Verified (Exact Match)

Contract Name:
LinkToken

Compiler Version
v0.4.16+commit.d7661dd9

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, Audited

Contract Source Code (Solidity)Audit Report

/**
 *Submitted for verification at Etherscan.io on 2017-09-23
*/

pragma solidity ^0.4.16;


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

  function div(uint256 a, uint256 b) internal constant returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

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

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


/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  uint256 public totalSupply;
  function balanceOf(address who) constant returns (uint256);
  function transfer(address to, uint256 value) returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) constant returns (uint256);
  function transferFrom(address from, address to, uint256 value) returns (bool);
  function approve(address spender, uint256 value) returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract ERC677 is ERC20 {
  function transferAndCall(address to, uint value, bytes data) returns (bool success);

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

contract ERC677Receiver {
  function onTokenTransfer(address _sender, uint _value, bytes _data);
}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances. 
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  /**
  * @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) returns (bool) {
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    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) constant returns (uint256 balance) {
    return balances[_owner];
  }

}


/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, BasicToken {

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


  /**
   * @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) returns (bool) {
    var _allowance = allowed[_from][msg.sender];

    // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
    // require (_value <= _allowance);

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

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) returns (bool) {
    allowed[msg.sender][_spender] = _value;
    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) constant returns (uint256 remaining) {
    return allowed[_owner][_spender];
  }
  
    /*
   * approve should be called when allowed[_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
   */
  function increaseApproval (address _spender, uint _addedValue) 
    returns (bool success) {
    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  function decreaseApproval (address _spender, uint _subtractedValue) 
    returns (bool success) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

contract ERC677Token is ERC677 {

  /**
  * @dev transfer token to a contract address with additional data if the recipient is a contact.
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  * @param _data The extra data to be passed to the receiving contract.
  */
  function transferAndCall(address _to, uint _value, bytes _data)
    public
    returns (bool success)
  {
    super.transfer(_to, _value);
    Transfer(msg.sender, _to, _value, _data);
    if (isContract(_to)) {
      contractFallback(_to, _value, _data);
    }
    return true;
  }


  // PRIVATE

  function contractFallback(address _to, uint _value, bytes _data)
    private
  {
    ERC677Receiver receiver = ERC677Receiver(_to);
    receiver.onTokenTransfer(msg.sender, _value, _data);
  }

  function isContract(address _addr)
    private
    returns (bool hasCode)
  {
    uint length;
    assembly { length := extcodesize(_addr) }
    return length > 0;
  }

}

contract LinkToken is StandardToken, ERC677Token {

  uint public constant totalSupply = 10**27;
  string public constant name = 'ChainLink Token';
  uint8 public constant decimals = 18;
  string public constant symbol = 'LINK';

  function LinkToken()
    public
  {
    balances[msg.sender] = totalSupply;
  }

  /**
  * @dev transfer token to a specified address with additional data if the recipient is a contract.
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  * @param _data The extra data to be passed to the receiving contract.
  */
  function transferAndCall(address _to, uint _value, bytes _data)
    public
    validRecipient(_to)
    returns (bool success)
  {
    return super.transferAndCall(_to, _value, _data);
  }

  /**
  * @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, uint _value)
    public
    validRecipient(_to)
    returns (bool success)
  {
    return super.transfer(_to, _value);
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * @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
    validRecipient(_spender)
    returns (bool)
  {
    return super.approve(_spender,  _value);
  }

  /**
   * @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)
    public
    validRecipient(_to)
    returns (bool)
  {
    return super.transferFrom(_from, _to, _value);
  }


  // MODIFIERS

  modifier validRecipient(address _recipient) {
    require(_recipient != address(0) && _recipient != address(this));
    _;
  }

}

Contract Security Audit

Contract ABI

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Deployed Bytecode

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Swarm Source

bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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