ETH Price: $2,685.33 (-2.41%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

738,307 ( 0.028%)

Market

Price

$17.49 @ 0.006513 ETH (-4.24%)

Onchain Market Cap

$17,490,000,000.00

Circulating Supply Market Cap

$11,166,823,604.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
224.03877503 LINK

Value
$3,918.44 ( ~1.4592 Eth) [0.0000%]
0x8B4523a30813Ea0B77cA9FB660980a8328Af543C
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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 15800% |ETH 0.0003846 1593.45%

Market

Volume (24H):$857,376,159.00
Market Capitalization:$11,166,823,604.00
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
WhiteBIT
LINK-USDT$17.49
0.0065149 Eth
$96,465,082.00
5,516,462.980 LINK
16.8798%
2
Binance
LINK-USDT$17.50
0.0065169 Eth
$88,669,522.00
4,919,513.720 LINK
15.0532%
3
Bybit
LINK-USDT$17.45
0.0064974 Eth
$63,614,659.00
3,552,335.668 LINK
10.8698%
4
Coinbase Exchange
LINK-USD$17.48
0.0065095 Eth
$31,143,147.00
1,781,848.430 LINK
5.4523%
5
Bitget
LINK-USDT$17.47
0.0065060 Eth
$30,593,140.00
1,706,134.376 LINK
5.2206%
6
HTX
LINK-USDT$17.47
0.0065084 Eth
$20,534,940.00
1,148,910.895 LINK
3.5155%
7
P2B
LINK-USDT$17.50
0.0065117 Eth
$15,727,169.00
898,754.770 LINK
2.7501%
8
Gate.io
LINK-USDT$17.49
0.0065121 Eth
$15,318,447.00
851,001.620 LINK
2.6040%
9
OKX
LINK-USDT$17.47
0.0065074 Eth
$14,431,146.00
806,982.861 LINK
2.4693%
10
Slex
LINK-USDT$17.51
0.0065139 Eth
$11,388,900.00
632,913.860 LINK
1.9366%
11
DigiFinex
LINK-USDT$17.48
0.0065096 Eth
$11,238,135.00
642,971.980 LINK
1.9674%
12
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$17.55
0.0065352 Eth
$9,088,786.00
511,508.347 0X514910771AF9CA656AF840DFF83E8264ECF986CA
1.5652%
13
KuCoin
LINK-USDT$17.48
0.0065117 Eth
$8,793,458.00
502,942.112 LINK
1.5389%
14
XT.COM
LINK-USDT$17.49
0.0065147 Eth
$8,734,222.00
484,793.990 LINK
1.4834%
15
MEXC
LINK-EUR$17.50
0.0065201 Eth
$8,206,001.00
468,835.890 LINK
1.4346%
16
MEXC
LINK-USDC$17.53
0.0065288 Eth
$7,907,213.00
451,062.600 LINK
1.3802%
17
LBank
LINK-USDT$17.49
0.0065123 Eth
$7,645,074.00
437,159.810 LINK
1.3377%
18
Coinstore
LINK-USDT$17.47
0.0065082 Eth
$7,490,431.00
416,290.450 LINK
1.2738%
19
Binance
LINK-FDUSD$17.48
0.0065124 Eth
$7,303,582.00
404,892.220 LINK
1.2389%
20
Binance
LINK-USDC$17.51
0.0065132 Eth
$6,810,765.00
378,306.510 LINK
1.1576%
21
Kraken
LINK-USD$17.47
0.0065095 Eth
$6,665,745.00
381,519.072 LINK
1.1674%
22
CoinW
LINK-USDT$17.49
0.0065145 Eth
$6,297,383.00
359,996.390 LINK
1.1016%
23
Bitunix
LINK-USDT$17.48
0.0065113 Eth
$5,968,878.00
341,429.190 LINK
1.0447%
24
Azbit
LINK-USDT$17.49
0.0065154 Eth
$5,273,476.00
292,562.589 LINK
0.8952%
25
BYDFi
LINK-USDT$17.49
0.0065140 Eth
$4,810,087.00
275,036.140 LINK
0.8416%
26
BTSE
LINK-USDT$17.49
0.0065127 Eth
$4,062,055.00
232,262.724 LINK
0.7107%
27
LATOKEN
LINK-USDT$17.49
0.0065152 Eth
$4,061,587.00
232,249.623 LINK
0.7107%
28
QMall
LINK-USDT$17.53
0.0065175 Eth
$3,699,890.00
205,297.336 LINK
0.6282%
29
Bitvavo
LINK-EUR$17.52
0.0065260 Eth
$2,890,399.00
164,999.946 LINK
0.5049%
30
CoinEx
LINK-USDT$17.51
0.0065233 Eth
$2,730,740.00
154,705.353 LINK
0.4734%
31
Dex-Trade
LINK-USDT$17.51
0.0065227 Eth
$2,677,961.00
152,957.937 LINK
0.4680%
32
FMCPAY
LINK-USDT$17.51
0.0065202 Eth
$2,551,879.00
141,558.449 LINK
0.4332%
33
Biconomy.com
LINK-USDT$17.49
0.0065178 Eth
$1,949,171.00
109,143.710 LINK
0.3340%
34
Coinbase Exchange
LINK-GBP$17.48
0.0065129 Eth
$1,869,182.00
106,928.800 LINK
0.3272%
35
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.55
0.0065351 Eth
$1,755,751.00
98,814.328 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3024%
36
Coinbase Exchange
LINK-EUR$17.48
0.0065134 Eth
$1,746,854.00
99,923.000 LINK
0.3058%
37
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.53
0.0065331 Eth
$1,416,965.00
79,486.921 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2432%
38
PointPay
LINK-USDT$17.48
0.0065095 Eth
$1,410,733.00
78,276.200 LINK
0.2395%
39
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.54
0.0065355 Eth
$1,367,796.00
77,032.204 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2357%
40
Bybit
LINK-USDC$17.51
0.0065207 Eth
$1,300,172.00
74,200.053 LINK
0.2270%
41
FMCPAY
LINK-ETH$17.48
0.0065117 Eth
$1,112,953.00
62,781.120 LINK
0.1921%
42
Binance
LINK-ETH$17.52
0.0065187 Eth
$1,085,475.00
61,102.210 LINK
0.1870%
43
FMCPAY
LINK-BTC$17.49
0.0065146 Eth
$1,035,824.00
58,193.800 LINK
0.1781%
44
BigONE
LINK-USDT$17.59
0.0065435 Eth
$945,052.00
53,720.520 LINK
0.1644%
45
Phemex
LINK-USDT$17.49
0.0065132 Eth
$874,659.00
50,014.690 LINK
0.1530%
46
Trubit
LINK-USDT$17.50
0.0065198 Eth
$846,734.00
47,278.070 LINK
0.1447%
47
WhiteBIT
LINK-BTC$17.48
0.0065133 Eth
$816,655.00
46,712.770 LINK
0.1429%
48
EXMO
LINK-USDT$17.49
0.0065123 Eth
$794,866.00
45,458.215 LINK
0.1391%
49
Gemini
LINK-USD$17.56
0.0065417 Eth
$781,764.00
44,508.296 LINK
0.1362%
50
LATOKEN
LINK-BTC$17.49
0.0065132 Eth
$756,124.00
43,230.806 LINK
0.1323%
51
BitStorage
LINK-USDT$17.51
0.0065086 Eth
$698,043.00
39,868.990 LINK
0.1220%
52
EarnBIT
LINK-USDT$17.48
0.0065111 Eth
$696,323.00
38,940.027 LINK
0.1192%
53
Tokpie
LINK-USDT$17.53
0.0065312 Eth
$673,894.00
38,438.712 LINK
0.1176%
54
Binance
LINK-TRY$17.58
0.0065467 Eth
$663,811.00
36,684.120 LINK
0.1122%
55
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$17.52
0.0065284 Eth
$656,963.00
37,501.068 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1147%
56
tanX
LINK-USDC$17.48
0.0065124 Eth
$652,494.00
36,198.100 LINK
0.1108%
57
Bitbank
LINK-JPY$17.57
0.0065428 Eth
$588,047.00
33,472.748 LINK
0.1024%
58
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.48
0.0065125 Eth
$558,323.00
582,431.761 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.7822%
59
QMall
LINK-USDC$17.49
0.0065162 Eth
$552,845.00
30,711.863 LINK
0.0940%
60
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.48
0.0065125 Eth
$532,864.00
30,083.989 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0921%
61
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.55
0.0065344 Eth
$497,523.00
56,373.664 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1725%
62
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$17.50
0.0065174 Eth
$461,325.00
25,689.920 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0786%
63
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.54
0.0065346 Eth
$360,081.00
376,275.989 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
1.1514%
64
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$17.48
0.0065089 Eth
$352,390.00
19,449.355 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0595%
65
XT.COM
LINK-ETH$17.48
0.0065113 Eth
$302,990.00
17,079.260 LINK
0.0523%
66
BitMart
LINK-BTC$17.50
0.0065191 Eth
$295,985.00
16,909.680 LINK
0.0517%
67
Mercado Bitcoin
LINK-BRL$17.59
0.0065499 Eth
$265,686.00
15,106.338 LINK
0.0462%
68
GMO Japan
LINK-JPY$17.61
0.0065477 Eth
$259,616.00
14,739.400 LINK
0.0451%
69
Hotcoin
LINK-BTC$17.50
0.0065172 Eth
$253,581.00
14,490.320 LINK
0.0443%
70
Coinbase Exchange
LINK-BTC$17.50
0.0065179 Eth
$250,203.00
14,299.680 LINK
0.0438%
71
Slex
LINK-ETH$17.49
0.0065148 Eth
$248,137.00
14,027.460 LINK
0.0429%
72
BitStorage
LINK-ETH$17.50
0.0065188 Eth
$247,400.00
14,135.740 LINK
0.0433%
73
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$17.55
0.0065344 Eth
$236,179.00
13,047.727 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0399%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.49
0.0065178 Eth
$229,298.00
12,920.987 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0395%
75
BYDFi
LINK-USDC$17.51
0.0065222 Eth
$226,659.00
12,947.360 LINK
0.0396%
76
BitDelta
LINK-USDT$17.50
0.0065164 Eth
$222,169.00
12,374.000 LINK
0.0379%
77
HashKey Exchange
LINK-USD$17.53
0.0065299 Eth
$221,474.00
12,202.887 LINK
0.0373%
78
OKX
LINK-USDC$17.50
0.0065181 Eth
$221,425.00
12,339.886 LINK
0.0378%
79
Bitkub
LINK-THB$17.62
0.0065620 Eth
$214,006.00
12,145.458 LINK
0.0372%
80
KuCoin
LINK-USDC$17.51
0.0065201 Eth
$189,106.00
10,801.936 LINK
0.0331%
81
WhiteBIT
LINK-TRY$17.65
0.0065745 Eth
$187,713.00
10,637.760 LINK
0.0326%
82
bitcastle
LINK-USDT$17.49
0.0065152 Eth
$175,511.00
9,764.390 LINK
0.0299%
83
Bitci TR
LINK-TRY$17.53
0.0065167 Eth
$171,881.00
9,562.408 LINK
0.0293%
84
Bitbegin
LINK-USDT$17.52
0.0065134 Eth
$162,920.00
9,089.516 LINK
0.0278%
85
WhiteBIT
LINK-EUR$17.56
0.0065408 Eth
$156,363.00
8,905.840 LINK
0.0273%
86
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$17.49
0.0065126 Eth
$136,504.00
7,559.584 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0231%
87
Bitso
LINK-USD$17.61
0.0065594 Eth
$126,521.00
7,186.180 LINK
0.0220%
88
CoinTR
LINK-TRY$17.63
0.0065659 Eth
$121,542.00
6,787.010 LINK
0.0208%
89
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.46
0.0065070 Eth
$113,745.00
6,408.772 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0196%
90
Binance US
LINK-USDT$17.56
0.0065307 Eth
$113,265.00
6,451.117 LINK
0.0197%
91
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.54
0.0065358 Eth
$112,371.00
115,926.551 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3547%
92
Uniswap V4 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.46
0.0065070 Eth
$111,609.00
116,965.284 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.3579%
93
KuCoin
LINK-BTC$17.56
0.0065411 Eth
$111,382.00
6,341.917 LINK
0.0194%
94
BitMart
LINK-ETH$17.50
0.0065189 Eth
$98,857.00
5,647.920 LINK
0.0173%
95
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$17.53
0.0065304 Eth
$98,302.00
5,529.857 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0169%
96
HTX
LINK-BTC$17.51
0.0065248 Eth
$83,949.00
4,779.050 LINK
0.0146%
97
Hotcoin
LINK-ETH$17.48
0.0065113 Eth
$73,682.00
4,215.770 LINK
0.0129%
98
Uniswap V4 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.57
0.0065454 Eth
$47,686.00
49,002.857 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.1499%
99
Dex-Trade
LINK-ETH$17.51
0.0065102 Eth
$30,820.00
1,759.650 LINK
0.0054%
100
Bitexen
LINK-TRY$17.46
0.0064901 Eth
$29,166.00
1,670.482 LINK
0.0051%

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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