ETH Price: $3,445.34 (+3.41%)
Gas: 16.5 Gwei

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

726,684 ( 0.002%)

Market

Price

$24.29 @ 0.007050 ETH (+7.80%)

Onchain Market Cap

$24,290,000,000.00

Circulating Supply Market Cap

$15,316,335,131.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
33.115231430586857475 LINK

Value
$804.37 ( ~0.233465944887608 Eth) [0.0000%]
0x2ca09730db96548ef46a6f74114b68fd05d85a7f
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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 21981.82% |ETH 0.0003846 1733.07%

Market

Volume (24H):$1,142,164,023.00
Market Capitalization:$15,316,335,131.00
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$24.50
0.0071079 Eth
$145,938,459.00
6,162,235.580 LINK
20.3874%
2
Coinbase Exchange
LINK-USD$24.47
0.0070976 Eth
$74,749,207.00
3,055,227.950 LINK
10.1081%
3
Upbit
LINK-KRW$24.79
0.0071926 Eth
$50,281,356.00
2,028,548.229 LINK
6.7113%
4
Bybit
LINK-USDT$24.43
0.0070898 Eth
$32,441,245.00
1,367,630.941 LINK
4.5247%
5
P2B
LINK-USDT$24.47
0.0070969 Eth
$30,738,614.00
1,256,108.250 LINK
4.1558%
6
Slex
LINK-USDT$24.40
0.0070772 Eth
$24,672,335.00
1,041,417.240 LINK
3.4455%
7
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.34
0.0070875 Eth
$21,364,370.00
885,190.979 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.9286%
8
OKX
LINK-USDT$24.45
0.0070953 Eth
$19,002,636.00
802,154.801 LINK
2.6539%
9
DigiFinex
LINK-USDT$24.48
0.0071045 Eth
$18,792,906.00
767,578.420 LINK
2.5395%
10
Gate.io
LINK-USDT$24.50
0.0071062 Eth
$17,651,191.00
746,486.600 LINK
2.4697%
11
HTX
LINK-USDT$24.46
0.0070924 Eth
$15,270,997.00
643,745.579 LINK
2.1298%
12
Binance
LINK-FDUSD$24.45
0.0070944 Eth
$14,955,566.00
630,807.200 LINK
2.0870%
13
XT.COM
LINK-USDT$24.28
0.0070741 Eth
$14,617,028.00
617,369.200 LINK
2.0425%
14
Azbit
LINK-USDT$24.27
0.0070692 Eth
$14,502,664.00
612,768.842 LINK
2.0273%
15
MEXC
LINK-USDT$24.39
0.0070935 Eth
$12,844,125.00
526,590.270 LINK
1.7422%
16
Coinstore
LINK-USDT$24.46
0.0070989 Eth
$12,697,869.00
536,105.430 LINK
1.7737%
17
Bitunix
LINK-USDT$24.45
0.0071172 Eth
$11,434,495.00
467,817.890 LINK
1.5478%
18
Bithumb
LINK-KRW$24.75
0.0071819 Eth
$10,410,171.00
420,688.292 LINK
1.3918%
19
CoinW
LINK-USDT$24.42
0.0070842 Eth
$10,141,819.00
415,314.760 LINK
1.3740%
20
Binance
LINK-USDC$24.49
0.0071048 Eth
$9,905,641.00
415,423.950 LINK
1.3744%
21
Kraken
LINK-USD$24.42
0.0070854 Eth
$9,501,373.00
389,124.016 LINK
1.2874%
22
BYDFi
LINK-USDT$24.11
0.0070716 Eth
$8,721,385.00
361,737.500 LINK
1.1968%
23
Hotcoin
LINK-USDT$24.49
0.0071052 Eth
$8,674,210.00
354,256.610 LINK
1.1720%
24
LBank
LINK-USDT$24.45
0.0071092 Eth
$7,332,235.00
299,944.980 LINK
0.9924%
25
BTSE
LINK-USDT$24.21
0.0070685 Eth
$7,269,275.00
300,257.832 LINK
0.9934%
26
LATOKEN
LINK-USDT$24.50
0.0071075 Eth
$7,170,084.00
292,655.203 LINK
0.9682%
27
KuCoin
LINK-USDT$24.46
0.0070928 Eth
$7,156,070.00
292,595.613 LINK
0.9680%
28
QMall
LINK-USDT$24.32
0.0070816 Eth
$5,608,837.00
236,363.972 LINK
0.7820%
29
Bitvavo
LINK-EUR$24.38
0.0070967 Eth
$5,036,219.00
206,599.884 LINK
0.6835%
30
Dex-Trade
LINK-USDT$24.32
0.0070827 Eth
$4,762,997.00
195,832.400 LINK
0.6479%
31
Coinbase Exchange
LINK-EUR$24.39
0.0070920 Eth
$4,203,780.00
172,383.790 LINK
0.5703%
32
CoinEx
LINK-USDT$24.28
0.0070691 Eth
$4,172,957.00
176,664.515 LINK
0.5845%
33
FMCPAY
LINK-USDT$24.18
0.0070893 Eth
$3,471,297.00
146,536.619 LINK
0.4848%
34
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$24.18
0.0070319 Eth
$2,801,541.00
116,048.795 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3839%
35
Biconomy.com
LINK-USDT$24.49
0.0071061 Eth
$2,559,524.00
107,983.840 LINK
0.3573%
36
Coinbase Exchange
LINK-GBP$24.39
0.0070938 Eth
$2,290,189.00
93,889.510 LINK
0.3106%
37
Kraken
LINK-EUR$24.42
0.0070869 Eth
$2,275,336.00
93,165.461 LINK
0.3082%
38
PointPay
LINK-USDT$24.29
0.0070750 Eth
$2,195,661.00
92,528.725 LINK
0.3061%
39
AscendEX (BitMax)
LINK-USDT$24.32
0.0070572 Eth
$1,807,878.00
74,336.500 LINK
0.2459%
40
FMCPAY
LINK-ETH$24.42
0.0070842 Eth
$1,788,488.00
73,745.520 LINK
0.2440%
41
Phemex
LINK-USDT$24.30
0.0070807 Eth
$1,688,718.00
69,489.440 LINK
0.2299%
42
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$24.23
0.0070453 Eth
$1,670,636.00
67,822.186 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2244%
43
EXMO
LINK-USDT$24.43
0.0070909 Eth
$1,594,228.00
65,252.369 LINK
0.2159%
44
Binance
LINK-TRY$24.43
0.0071112 Eth
$1,567,820.00
66,333.570 LINK
0.2195%
45
FMCPAY
LINK-BTC$24.34
0.0070783 Eth
$1,562,408.00
64,308.200 LINK
0.2128%
46
itBit
LINK-USD$24.18
0.0070904 Eth
$1,399,601.00
57,882.608 LINK
0.1915%
47
Bitbank
LINK-JPY$24.50
0.0071173 Eth
$1,292,091.00
52,732.958 LINK
0.1745%
48
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.39
0.0070767 Eth
$1,291,142.00
53,335.084 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1765%
49
Kraken
LINK-USDT$24.40
0.0070800 Eth
$1,286,804.00
52,739.962 LINK
0.1745%
50
BigONE
LINK-USDT$24.53
0.0071262 Eth
$1,281,078.00
52,218.370 LINK
0.1728%
51
Binance
LINK-ETH$24.20
0.0070661 Eth
$1,272,567.00
52,885.860 LINK
0.1750%
52
BitStorage
LINK-USDT$24.46
0.0070940 Eth
$1,213,149.00
49,594.630 LINK
0.1641%
53
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$24.43
0.0070903 Eth
$1,204,222.00
80,057.811 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2649%
54
Tokpie
LINK-USDT$24.11
0.0070509 Eth
$1,201,397.00
49,839.552 LINK
0.1649%
55
Binance
LINK-EUR$24.43
0.0070892 Eth
$1,109,998.00
46,692.050 LINK
0.1545%
56
Bybit
LINK-USDC$24.42
0.0070852 Eth
$1,045,406.00
44,098.013 LINK
0.1459%
57
Coinbase Exchange
LINK-USDT$24.31
0.0070808 Eth
$985,583.00
40,535.084 LINK
0.1341%
58
Trubit
LINK-USDT$24.30
0.0070746 Eth
$950,270.00
40,140.880 LINK
0.1328%
59
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.26
0.0070628 Eth
$944,638.00
39,079.630 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1293%
60
EarnBIT
LINK-USDT$24.70
0.0071657 Eth
$866,230.00
36,101.419 LINK
0.1194%
61
Gemini
LINK-USD$24.52
0.0071157 Eth
$835,679.00
34,078.688 LINK
0.1127%
62
Coinbase Exchange
LINK-ETH$24.37
0.0070925 Eth
$787,180.00
32,301.810 LINK
0.1069%
63
OKX
LINK-USDC$24.46
0.0070986 Eth
$781,141.00
33,130.436 LINK
0.1096%
64
QMall
LINK-USDC$24.50
0.0071077 Eth
$763,564.00
31,983.474 LINK
0.1058%
65
HashKey Exchange
LINK-USD$24.28
0.0070448 Eth
$691,956.00
29,296.677 LINK
0.0969%
66
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$24.33
0.0070751 Eth
$644,772.00
27,353.006 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0905%
67
Nonkyc.io
LINK-USDT$24.27
0.0070658 Eth
$592,210.00
25,104.141 LINK
0.0831%
68
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$24.35
0.0070819 Eth
$588,167.00
570,033.689 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.8859%
69
Kraken
LINK-ETH$24.42
0.0070850 Eth
$581,164.00
23,802.355 LINK
0.0787%
70
GMO Japan
LINK-JPY$24.37
0.0070742 Eth
$558,979.00
22,933.200 LINK
0.0759%
71
LATOKEN
LINK-BTC$24.37
0.0070871 Eth
$542,048.00
22,243.263 LINK
0.0736%
72
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$24.22
0.0070506 Eth
$530,065.00
516,070.614 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.7074%
73
Bitkub
LINK-THB$24.24
0.0070764 Eth
$474,581.00
19,580.804 LINK
0.0648%
74
Coinbase Exchange
LINK-BTC$24.42
0.0070808 Eth
$458,835.00
18,792.670 LINK
0.0622%
75
Coinone
LINK-KRW$24.79
0.0071946 Eth
$396,854.00
16,006.227 LINK
0.0530%
76
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$24.07
0.0070065 Eth
$363,865.00
15,176.610 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0502%
77
Slex
LINK-ETH$24.39
0.0070920 Eth
$347,468.00
14,373.670 LINK
0.0476%
78
BitMart
LINK-BTC$24.43
0.0070885 Eth
$334,801.00
13,705.620 LINK
0.0453%
79
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.32
0.0070729 Eth
$319,432.00
13,202.974 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0437%
80
BitStorage
LINK-ETH$24.39
0.0070786 Eth
$309,489.00
12,689.360 LINK
0.0420%
81
BitDelta
LINK-USDT$24.28
0.0070714 Eth
$304,897.00
12,895.000 LINK
0.0427%
82
Hotcoin
LINK-BTC$24.37
0.0070796 Eth
$301,800.00
12,382.790 LINK
0.0410%
83
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$24.35
0.0070818 Eth
$281,774.00
11,672.464 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0386%
84
bitcastle
LINK-USDT$24.33
0.0070833 Eth
$268,985.00
11,334.040 LINK
0.0375%
85
BYDFi
LINK-USDC$24.42
0.0071007 Eth
$255,439.00
10,462.030 LINK
0.0346%
86
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.26
0.0070560 Eth
$253,821.00
10,736.388 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0355%
87
Kraken
LINK-GBP$24.45
0.0070959 Eth
$233,488.00
9,548.174 LINK
0.0316%
88
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.49
0.0071141 Eth
$232,458.00
9,763.587 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0323%
89
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.34
0.0070875 Eth
$231,458.00
9,744.854 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0322%
90
Binance US
LINK-USDT$24.25
0.0070784 Eth
$217,077.00
8,952.542 LINK
0.0296%
91
AscendEX (BitMax)
LINK-USD$24.35
0.0070650 Eth
$214,139.00
8,795.200 LINK
0.0291%
92
Bitci TR
LINK-TRY$24.54
0.0071269 Eth
$209,979.00
8,887.220 LINK
0.0294%
93
PointPay
LINK-BTC$24.31
0.0070782 Eth
$198,654.00
8,174.710 LINK
0.0270%
94
Bitso
LINK-USD$24.28
0.0070716 Eth
$197,689.00
8,142.516 LINK
0.0269%
95
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$24.33
0.0070589 Eth
$179,830.00
7,337.260 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0243%
96
Binance
LINK-BNB$24.23
0.0070998 Eth
$176,188.00
7,385.338 LINK
0.0244%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$24.30
0.0070677 Eth
$158,236.00
6,707.899 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0222%
98
BitMart
LINK-ETH$24.44
0.0070907 Eth
$146,108.00
5,979.320 LINK
0.0198%
99
Mercado Bitcoin
LINK-BRL$24.46
0.0070963 Eth
$106,849.00
4,369.190 LINK
0.0145%
100
Korbit
LINK-KRW$24.75
0.0071806 Eth
$84,619.00
3,527.484 LINK
0.0117%

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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