ETH Price: $3,334.00 (-1.21%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

728,338 ( 0.003%)

Market

Price

$21.28 @ 0.006383 ETH (-7.31%)

Onchain Market Cap

$21,280,000,000.00

Circulating Supply Market Cap

$13,440,102,318.00

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
garrettsmith.eth
Balance
0.11514894 LINK

Value
$2.45 ( ~0.000734853899737923 Eth) [0.0000%]
0x5900b623081e323fb728696d6249b8a6a38c0e6a
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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 19245.45% |ETH 0.0003846 1559.65%

Market

Volume (24H):$1,054,654,900.00
Market Capitalization:$13,440,102,318.00
Circulating Supply:631,099,972.00 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$21.28
0.0063940 Eth
$113,461,409.00
5,059,098.980 LINK
18.5015%
2
Coinbase Exchange
LINK-USD$21.28
0.0063920 Eth
$42,343,210.00
1,990,280.130 LINK
7.2786%
3
Bitget
LINK-USDT$21.33
0.0064008 Eth
$38,040,988.00
1,710,109.376 LINK
6.2540%
4
WhiteBIT
LINK-USDT$21.32
0.0064028 Eth
$36,220,060.00
1,699,153.390 LINK
6.2139%
5
Bybit
LINK-USDT$21.29
0.0063887 Eth
$32,726,174.00
1,473,216.273 LINK
5.3877%
6
MEXC
LINK-USDT$21.32
0.0064019 Eth
$23,768,307.00
1,114,913.260 LINK
4.0773%
7
OKX
LINK-USDT$21.31
0.0063899 Eth
$22,586,418.00
1,008,307.845 LINK
3.6874%
8
Slex
LINK-USDT$21.27
0.0063910 Eth
$22,172,217.00
986,071.770 LINK
3.6061%
9
P2B
LINK-USDT$21.27
0.0063936 Eth
$21,671,685.00
1,019,077.410 LINK
3.7268%
10
CoinW
LINK-USDT$21.27
0.0063920 Eth
$18,827,945.00
885,108.600 LINK
3.2369%
11
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$21.42
0.0064280 Eth
$17,913,893.00
799,682.214 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.9245%
12
DigiFinex
LINK-USDT$21.32
0.0063993 Eth
$14,482,958.00
679,171.540 LINK
2.4838%
13
FameEX
LINK-USDT$21.25
0.0063880 Eth
$11,334,268.00
505,167.547 LINK
1.8474%
14
XT.COM
LINK-USDT$21.27
0.0063880 Eth
$11,291,605.00
503,579.050 LINK
1.8416%
15
Azbit
LINK-USDT$21.25
0.0063842 Eth
$11,279,797.00
503,074.114 LINK
1.8398%
16
HTX
LINK-USDT$21.31
0.0063998 Eth
$11,114,629.00
495,064.156 LINK
1.8105%
17
Coinstore
LINK-USDT$21.28
0.0063951 Eth
$10,041,640.00
448,313.890 LINK
1.6395%
18
Bitunix
LINK-USDT$21.25
0.0063849 Eth
$8,976,196.00
422,232.780 LINK
1.5441%
19
Biconomy.com
LINK-USDT$21.26
0.0063884 Eth
$7,481,713.00
333,779.662 LINK
1.2207%
20
BTSE
LINK-USDT$21.26
0.0063905 Eth
$7,352,037.00
345,786.395 LINK
1.2646%
21
BYDFi
LINK-USDT$21.28
0.0063982 Eth
$6,973,786.00
327,685.760 LINK
1.1984%
22
Binance
LINK-FDUSD$21.30
0.0063986 Eth
$6,472,489.00
288,645.380 LINK
1.0556%
23
Hotcoin
LINK-USDT$21.27
0.0063904 Eth
$5,602,108.00
263,383.400 LINK
0.9632%
24
LATOKEN
LINK-USDT$21.27
0.0063901 Eth
$5,448,344.00
256,158.614 LINK
0.9368%
25
QMall
LINK-USDT$21.26
0.0063872 Eth
$4,577,205.00
204,259.592 LINK
0.7470%
26
LBank
LINK-USDT$21.25
0.0063840 Eth
$4,544,272.00
213,839.800 LINK
0.7820%
27
KuCoin
LINK-USDT$21.31
0.0063995 Eth
$3,866,616.00
181,441.508 LINK
0.6635%
28
Kraken
LINK-USD$21.30
0.0063958 Eth
$3,616,551.00
169,806.370 LINK
0.6210%
29
Dex-Trade
LINK-USDT$21.25
0.0063917 Eth
$3,539,703.00
166,575.569 LINK
0.6092%
30
FMCPAY
LINK-USDT$21.27
0.0063911 Eth
$3,444,277.00
153,718.221 LINK
0.5622%
31
Bitvavo
LINK-EUR$21.27
0.0063988 Eth
$2,925,994.00
137,536.754 LINK
0.5030%
32
Dcoin
LINK-USDT$21.27
0.0063945 Eth
$2,311,122.00
108,653.000 LINK
0.3974%
33
CoinEx
LINK-USDT$21.24
0.0063895 Eth
$1,952,480.00
87,555.582 LINK
0.3202%
34
PointPay
LINK-USDT$21.24
0.0063822 Eth
$1,896,262.00
84,546.096 LINK
0.3092%
35
Coinbase Exchange
LINK-GBP$21.26
0.0063872 Eth
$1,753,229.00
82,468.940 LINK
0.3016%
36
EXMO
LINK-USDT$21.31
0.0064000 Eth
$1,683,565.00
79,013.848 LINK
0.2890%
37
Coinbase Exchange
LINK-ETH$21.27
0.0063899 Eth
$1,520,002.00
71,460.330 LINK
0.2613%
38
FMCPAY
LINK-BTC$21.27
0.0063901 Eth
$1,512,545.00
68,083.600 LINK
0.2490%
39
FMCPAY
LINK-ETH$21.31
0.0063893 Eth
$1,491,138.00
66,823.680 LINK
0.2444%
40
Bybit
LINK-USDC$21.27
0.0063826 Eth
$1,487,757.00
67,183.615 LINK
0.2457%
41
Coinbase Exchange
LINK-EUR$21.27
0.0063899 Eth
$1,432,391.00
67,349.560 LINK
0.2463%
42
WhiteBIT
LINK-BTC$21.26
0.0063866 Eth
$1,364,832.00
64,203.240 LINK
0.2348%
43
Phemex
LINK-USDT$21.32
0.0063971 Eth
$1,279,260.00
60,011.380 LINK
0.2195%
44
WhiteBIT
LINK-TRY$21.47
0.0064444 Eth
$1,235,559.00
57,535.780 LINK
0.2104%
45
Coinbase Exchange
LINK-USDT$21.33
0.0064001 Eth
$1,181,377.00
55,393.638 LINK
0.2026%
46
EarnBIT
LINK-USDT$21.34
0.0063994 Eth
$1,061,618.00
47,332.357 LINK
0.1731%
47
tanX
LINK-USDC$21.29
0.0063979 Eth
$1,019,935.00
45,532.150 LINK
0.1665%
48
Bitbank
LINK-JPY$21.34
0.0064116 Eth
$972,561.00
45,568.911 LINK
0.1666%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$21.38
0.0064160 Eth
$948,495.00
42,307.982 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1547%
50
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$21.28
0.0063872 Eth
$919,982.00
71,770.679 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2625%
51
BigONE
LINK-USDT$21.38
0.0064098 Eth
$883,839.00
41,337.030 LINK
0.1512%
52
BitStorage
LINK-USDT$21.28
0.0063930 Eth
$854,876.00
40,171.280 LINK
0.1469%
53
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$21.35
0.0064143 Eth
$828,898.00
37,145.435 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1358%
54
Gemini
LINK-USD$21.29
0.0063844 Eth
$754,954.00
35,456.272 LINK
0.1297%
55
Binance
LINK-TRY$21.40
0.0064258 Eth
$700,634.00
31,057.890 LINK
0.1136%
56
Binance
LINK-EUR$21.27
0.0063961 Eth
$584,998.00
25,968.010 LINK
0.0950%
57
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$21.30
0.0063910 Eth
$584,675.00
627,574.670 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.2951%
58
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$21.30
0.0063919 Eth
$576,618.00
26,029.139 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0952%
59
Koinpark
LINK-USDT$21.31
0.0064000 Eth
$553,537.00
25,978.859 LINK
0.0950%
60
itBit
LINK-USD$21.32
0.0063926 Eth
$495,081.00
23,221.426 LINK
0.0849%
61
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$21.26
0.0063799 Eth
$491,346.00
21,928.062 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0802%
62
WhiteBIT
LINK-EUR$21.28
0.0063922 Eth
$488,541.00
22,961.690 LINK
0.0840%
63
HashKey Exchange
LINK-USD$21.38
0.0064198 Eth
$422,965.00
18,476.053 LINK
0.0676%
64
GMO Japan
LINK-JPY$21.42
0.0064311 Eth
$418,906.00
19,560.600 LINK
0.0715%
65
Slex
LINK-ETH$21.30
0.0063984 Eth
$383,753.00
17,230.550 LINK
0.0630%
66
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$21.35
0.0064157 Eth
$377,801.00
16,701.027 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0611%
67
QMall
LINK-USDC$21.29
0.0063880 Eth
$356,953.00
15,912.826 LINK
0.0582%
68
BitMart
LINK-BTC$21.28
0.0063919 Eth
$356,952.00
16,773.700 LINK
0.0613%
69
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$21.36
0.0064111 Eth
$356,080.00
377,210.656 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.3795%
70
BitDelta
LINK-USDT$21.24
0.0063856 Eth
$281,254.00
12,477.000 LINK
0.0456%
71
OKX
LINK-USDC$21.33
0.0063964 Eth
$267,327.00
11,919.170 LINK
0.0436%
72
Bitci TR
LINK-TRY$21.49
0.0064581 Eth
$228,690.00
10,102.920 LINK
0.0369%
73
Bitbegin
LINK-USDT$21.27
0.0063901 Eth
$227,730.00
10,361.368 LINK
0.0379%
74
Coinbase Exchange
LINK-BTC$21.29
0.0063932 Eth
$217,990.00
10,239.340 LINK
0.0374%
75
BitStorage
LINK-ETH$21.24
0.0063819 Eth
$206,735.00
9,731.580 LINK
0.0356%
76
LATOKEN
LINK-BTC$21.27
0.0063901 Eth
$201,936.00
9,494.252 LINK
0.0347%
77
Hotcoin
LINK-BTC$21.30
0.0064010 Eth
$192,077.00
9,018.960 LINK
0.0330%
78
Binance
LINK-BRL$21.44
0.0064482 Eth
$189,854.00
8,398.820 LINK
0.0307%
79
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$21.32
0.0064044 Eth
$189,322.00
8,361.071 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0306%
80
Bitso
LINK-USD$21.29
0.0063970 Eth
$168,843.00
7,929.980 LINK
0.0290%
81
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$21.30
0.0063910 Eth
$163,341.00
7,360.923 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0269%
82
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$21.31
0.0063936 Eth
$157,658.00
6,975.663 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0255%
83
PointPay
LINK-BTC$21.26
0.0063872 Eth
$152,618.00
6,908.984 LINK
0.0253%
84
BitMart
LINK-ETH$21.29
0.0063954 Eth
$152,609.00
7,167.400 LINK
0.0262%
85
Bitkub
LINK-THB$21.43
0.0064421 Eth
$132,179.00
6,168.923 LINK
0.0226%
86
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$21.45
0.0064424 Eth
$106,939.00
4,807.655 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0176%
87
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$21.24
0.0063744 Eth
$105,371.00
4,774.329 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0175%
88
KuCoin
LINK-USDC$21.27
0.0063882 Eth
$103,497.00
4,865.216 LINK
0.0178%
89
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$21.36
0.0064113 Eth
$101,739.00
4,505.098 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0165%
90
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$21.48
0.0064544 Eth
$91,723.00
96,980.539 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3547%
91
Kraken
LINK-GBP$21.29
0.0063920 Eth
$90,255.00
4,240.191 LINK
0.0155%
92
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$21.33
0.0064091 Eth
$86,266.00
3,906.536 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0143%
93
Kanga
LINK-PLN$21.42
0.0064279 Eth
$84,209.00
0.000 LINK
0.0000%
94
Mercado Bitcoin
LINK-BRL$21.56
0.0064631 Eth
$80,531.00
3,736.068 LINK
0.0137%
95
Binance US
LINK-USDT$21.27
0.0063869 Eth
$72,826.00
3,424.124 LINK
0.0125%
96
Hotcoin
LINK-ETH$21.26
0.0063917 Eth
$68,652.00
3,228.450 LINK
0.0118%
97
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$21.34
0.0064115 Eth
$60,005.00
2,700.919 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0099%
98
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$21.39
0.0064268 Eth
$52,963.00
4,080.565 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0149%
99
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$21.42
0.0064277 Eth
$41,046.00
1,821.518 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0067%
100
KuCoin
LINK-KCS$21.26
0.0063847 Eth
$19,124.56
899.507 LINK
0.0033%

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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