ETH Price: $2,654.24 (-5.43%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

739,174 ( 0.029%)

Market

Price

$16.08 @ 0.006058 ETH (-8.29%)

Onchain Market Cap

$16,080,000,000.00

Circulating Supply Market Cap

$10,268,698,838.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
20 LINK

Value
$321.60 ( ~0.121164501885161 Eth) [0.0000%]
0xc0f921107edca96dbf8a04051c2892ebfd1e48a1
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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 14518.18% |ETH 0.0003846 1475.14%

Market

Volume (24H):$573,630,424.00
Market Capitalization:$10,268,698,838.00
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$16.21
0.0061089 Eth
$62,793,655.00
3,775,695.280 LINK
17.8251%
2
WhiteBIT
LINK-USDT$16.21
0.0061159 Eth
$56,750,149.00
3,500,515.630 LINK
16.5259%
3
Coinbase Exchange
LINK-USD$16.23
0.0061146 Eth
$22,348,660.00
1,377,421.240 LINK
6.5028%
4
HTX
LINK-USDT$16.23
0.0061160 Eth
$14,523,345.00
864,731.928 LINK
4.0824%
5
Gate.io
LINK-USDT$16.22
0.0061134 Eth
$13,862,975.00
840,556.740 LINK
3.9683%
6
Bybit
LINK-USDT$16.22
0.0061111 Eth
$12,351,000.00
739,059.769 LINK
3.4891%
7
P2B
LINK-USDT$16.19
0.0061074 Eth
$12,253,895.00
756,901.990 LINK
3.5733%
8
KuCoin
LINK-USDT$16.22
0.0061139 Eth
$10,301,273.00
635,108.512 LINK
2.9983%
9
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$16.19
0.0061010 Eth
$8,838,630.00
541,675.982 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.5573%
10
Bitget
LINK-USDT$16.22
0.0061126 Eth
$8,613,201.00
515,723.098 LINK
2.4347%
11
DigiFinex
LINK-USDT$16.22
0.0061132 Eth
$7,608,796.00
468,976.750 LINK
2.2140%
12
OKX
LINK-USDT$16.20
0.0061077 Eth
$7,540,515.00
454,225.964 LINK
2.1444%
13
XT.COM
LINK-USDT$16.24
0.0061197 Eth
$6,248,911.00
375,822.120 LINK
1.7743%
14
MEXC
LINK-EUR$16.12
0.0061137 Eth
$5,955,589.00
369,405.960 LINK
1.7440%
15
MEXC
LINK-USDC$16.05
0.0060858 Eth
$5,725,530.00
356,772.520 LINK
1.6843%
16
Hotcoin
LINK-USDT$16.24
0.0061197 Eth
$5,546,514.00
341,479.300 LINK
1.6121%
17
LBank
LINK-USDT$16.21
0.0061089 Eth
$5,368,484.00
331,127.310 LINK
1.5633%
18
Coinstore
LINK-USDT$16.22
0.0061115 Eth
$5,279,945.00
317,099.980 LINK
1.4970%
19
Binance
LINK-USDC$16.20
0.0061043 Eth
$5,262,093.00
316,042.480 LINK
1.4920%
20
CoinW
LINK-USDT$16.22
0.0061109 Eth
$4,691,538.00
289,277.380 LINK
1.3657%
21
Kraken
LINK-USD$16.23
0.0061154 Eth
$3,832,262.00
236,166.234 LINK
1.1149%
22
Azbit
LINK-USDT$16.08
0.0060951 Eth
$3,757,940.00
225,895.959 LINK
1.0665%
23
Bitunix
LINK-USDT$16.22
0.0061108 Eth
$3,633,186.00
223,956.210 LINK
1.0573%
24
BYDFi
LINK-USDT$16.22
0.0061187 Eth
$3,413,489.00
210,455.340 LINK
0.9936%
25
LATOKEN
LINK-USDT$16.21
0.0061082 Eth
$2,934,369.00
181,042.880 LINK
0.8547%
26
BTSE
LINK-USDT$16.24
0.0061201 Eth
$2,756,901.00
169,723.045 LINK
0.8013%
27
QMall
LINK-USDT$16.04
0.0060899 Eth
$2,561,600.00
153,890.947 LINK
0.7265%
28
Bitvavo
LINK-EUR$16.13
0.0061219 Eth
$2,298,540.00
142,469.199 LINK
0.6726%
29
FMCPAY
LINK-USDT$16.18
0.0061043 Eth
$2,229,514.00
132,869.915 LINK
0.6273%
30
Dex-Trade
LINK-USDT$16.24
0.0061195 Eth
$1,976,324.00
121,700.976 LINK
0.5746%
31
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$16.23
0.0061172 Eth
$1,649,785.00
100,825.720 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.4760%
32
CoinEx
LINK-USDT$16.18
0.0061023 Eth
$1,523,667.00
91,846.014 LINK
0.4336%
33
Coinbase Exchange
LINK-EUR$16.24
0.0061189 Eth
$1,345,468.00
82,866.410 LINK
0.3912%
34
Biconomy.com
LINK-USDT$16.10
0.0061091 Eth
$1,340,922.00
80,030.740 LINK
0.3778%
35
Binance
LINK-ETH$16.11
0.0061032 Eth
$1,093,400.00
67,126.160 LINK
0.3169%
36
Coinbase Exchange
LINK-GBP$16.22
0.0061131 Eth
$1,064,664.00
65,635.540 LINK
0.3099%
37
FMCPAY
LINK-ETH$16.21
0.0061100 Eth
$993,257.00
60,543.680 LINK
0.2858%
38
FMCPAY
LINK-BTC$16.22
0.0061142 Eth
$972,420.00
58,586.400 LINK
0.2766%
39
PointPay
LINK-USDT$16.22
0.0061137 Eth
$951,747.00
57,106.524 LINK
0.2696%
40
Trubit
LINK-USDT$16.23
0.0061150 Eth
$874,838.00
51,981.500 LINK
0.2454%
41
Bitbank
LINK-JPY$16.24
0.0061221 Eth
$784,954.00
48,323.683 LINK
0.2281%
42
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$16.24
0.0061212 Eth
$743,238.00
44,832.957 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2117%
43
OKX
LINK-USDC$16.19
0.0061036 Eth
$719,125.00
44,200.986 LINK
0.2087%
44
EXMO
LINK-USDT$16.23
0.0061175 Eth
$712,410.00
43,887.741 LINK
0.2072%
45
BigONE
LINK-USDT$16.21
0.0061078 Eth
$692,378.00
42,717.790 LINK
0.2017%
46
tanX
LINK-USDC$16.18
0.0061050 Eth
$667,578.00
39,637.780 LINK
0.1871%
47
Phemex
LINK-USDT$16.23
0.0061164 Eth
$647,847.00
39,909.860 LINK
0.1884%
48
WhiteBIT
LINK-BTC$16.22
0.0061126 Eth
$553,698.00
34,137.170 LINK
0.1612%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$16.20
0.0061072 Eth
$538,930.00
32,916.213 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1554%
50
LATOKEN
LINK-BTC$16.19
0.0061080 Eth
$527,807.00
32,599.256 LINK
0.1539%
51
Gemini
LINK-USD$16.24
0.0061183 Eth
$506,775.00
31,209.587 LINK
0.1473%
52
BitStorage
LINK-USDT$16.21
0.0061094 Eth
$491,429.00
30,313.920 LINK
0.1431%
53
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$16.23
0.0061151 Eth
$461,333.00
28,325.448 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1337%
54
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$16.24
0.0061227 Eth
$445,796.00
458,215.504 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.1632%
55
QMall
LINK-USDC$16.23
0.0061138 Eth
$421,303.00
25,300.210 LINK
0.1194%
56
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$16.24
0.0061195 Eth
$418,416.00
25,593.193 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1208%
57
EarnBIT
LINK-USDT$16.21
0.0061065 Eth
$363,531.00
21,884.303 LINK
0.1033%
58
Binance
LINK-TRY$16.23
0.0061145 Eth
$327,807.00
19,718.870 LINK
0.0931%
59
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$16.20
0.0061045 Eth
$314,654.00
19,273.346 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0910%
60
XT.COM
LINK-ETH$16.19
0.0061060 Eth
$306,959.00
18,767.150 LINK
0.0886%
61
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$16.23
0.0061173 Eth
$305,898.00
18,328.479 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0865%
62
GMO Japan
LINK-JPY$16.12
0.0060732 Eth
$295,038.00
18,303.600 LINK
0.0864%
63
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$16.24
0.0061171 Eth
$291,563.00
34,885.365 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1647%
64
BitMart
LINK-BTC$16.22
0.0061132 Eth
$280,711.00
17,308.880 LINK
0.0817%
65
BitStorage
LINK-ETH$16.10
0.0061088 Eth
$242,326.00
15,052.850 LINK
0.0711%
66
Slex
LINK-ETH$16.06
0.0060873 Eth
$235,011.00
14,412.550 LINK
0.0680%
67
Coinbase Exchange
LINK-BTC$16.21
0.0061087 Eth
$215,270.00
13,279.500 LINK
0.0627%
68
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$16.13
0.0060788 Eth
$212,851.00
13,043.260 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0616%
69
Bybit
LINK-USDC$16.23
0.0061146 Eth
$207,002.00
12,290.977 LINK
0.0580%
70
BitDelta
LINK-USDT$16.22
0.0061126 Eth
$205,315.00
12,263.000 LINK
0.0579%
71
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$16.24
0.0061227 Eth
$198,566.00
12,110.745 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0572%
72
Hotcoin
LINK-BTC$16.21
0.0061149 Eth
$189,988.00
11,719.630 LINK
0.0553%
73
Bitkub
LINK-THB$16.18
0.0060978 Eth
$172,252.00
10,646.456 LINK
0.0503%
74
Coinbase Exchange
LINK-USDT$16.23
0.0061164 Eth
$169,447.00
10,438.582 LINK
0.0493%
75
BYDFi
LINK-USDC$16.11
0.0061101 Eth
$169,119.00
10,496.300 LINK
0.0496%
76
Bybit
LINK-EUR$16.29
0.0061376 Eth
$166,518.00
9,952.320 LINK
0.0470%
77
Bitci TR
LINK-TRY$16.31
0.0061472 Eth
$165,852.00
9,814.320 LINK
0.0463%
78
Kraken
LINK-GBP$16.25
0.0061240 Eth
$165,477.00
10,183.232 LINK
0.0481%
79
CoinTR
LINK-TRY$16.24
0.0061207 Eth
$159,760.00
9,481.460 LINK
0.0448%
80
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$16.14
0.0060807 Eth
$154,153.00
9,787.406 0X5947BB275C521040051D82396192181B413227A3
0.0462%
81
WhiteBIT
LINK-TRY$16.28
0.0061354 Eth
$148,005.00
9,093.080 LINK
0.0429%
82
bitcastle
LINK-USDT$16.22
0.0061126 Eth
$130,388.00
7,833.030 LINK
0.0370%
83
KuCoin
LINK-USDC$16.24
0.0061218 Eth
$121,189.00
7,462.020 LINK
0.0352%
84
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$16.19
0.0061020 Eth
$101,046.00
6,187.235 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0292%
85
BitMart
LINK-ETH$16.21
0.0061109 Eth
$100,622.00
6,206.740 LINK
0.0293%
86
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$16.23
0.0061146 Eth
$98,713.00
5,823.749 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0275%
87
Coinbase Exchange
LINK-ETH$16.26
0.0061289 Eth
$84,742.00
5,210.670 LINK
0.0246%
88
Bitso
LINK-USD$16.21
0.0061093 Eth
$84,155.00
5,191.296 LINK
0.0245%
89
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$16.23
0.0061182 Eth
$76,666.00
4,624.388 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0218%
90
PointPay
LINK-BTC$16.20
0.0061079 Eth
$73,615.00
4,473.099 LINK
0.0211%
91
Binance US
LINK-USDT$16.23
0.0061157 Eth
$68,771.00
4,237.507 LINK
0.0200%
92
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$16.23
0.0061173 Eth
$55,410.00
57,265.231 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.2703%
93
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$16.12
0.0060759 Eth
$54,221.00
3,332.209 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0157%
94
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$16.19
0.0060986 Eth
$54,008.00
3,307.978 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0156%
95
Hotcoin
LINK-ETH$16.23
0.0061135 Eth
$53,256.00
3,282.140 LINK
0.0155%
96
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$16.11
0.0060708 Eth
$43,438.00
2,741.883 0X5947BB275C521040051D82396192181B413227A3
0.0129%
97
Mercado Bitcoin
LINK-BRL$16.21
0.0061084 Eth
$41,801.00
2,578.998 LINK
0.0122%
98
Dex-Trade
LINK-ETH$16.13
0.0061112 Eth
$32,191.00
1,995.740 LINK
0.0094%
99
Bitexen
LINK-TRY$15.97
0.0060606 Eth
$28,730.00
1,798.444 LINK
0.0085%
100
OKX
LINK-EUR$16.19
0.0061045 Eth
$23,217.00
1,399.383 LINK
0.0066%

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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