ETH Price: $2,425.12 (-1.69%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

722,499 ( 0.014%)

Market

Price

$10.35 @ 0.004268 ETH (-3.31%)

Onchain Market Cap

$10,350,000,000.00

Circulating Supply Market Cap

$6,486,149,864.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
1.252492693626088438 LINK

Value
$12.96 ( ~0.00534406368535582 Eth) [0.0000%]
0x5359A351b81E5eb115E256B33f53FAfdA4ca37Fb
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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 9309.09% |ETH 0.0003846 1009.72%

Market

Volume (24H):$411,139,479.00
Market Capitalization:$6,486,149,864.00
Circulating Supply:626,849,971.00 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$10.36
0.0042730 Eth
$31,173,103.00
2,953,171.870 LINK
15.8360%
2
WhiteBIT
LINK-USDT$10.34
0.0042656 Eth
$27,722,572.00
2,682,247.390 LINK
14.3832%
3
HTX
LINK-USDT$10.34
0.0042650 Eth
$11,147,989.00
1,050,399.342 LINK
5.6326%
4
Bitget
LINK-USDT$10.33
0.0042651 Eth
$9,127,894.00
859,963.620 LINK
4.6114%
5
Bybit
LINK-USDT$10.33
0.0042639 Eth
$9,028,461.00
853,286.076 LINK
4.5756%
6
Coinbase Exchange
LINK-USD$10.36
0.0042713 Eth
$8,053,793.00
777,468.240 LINK
4.1691%
7
OKX
LINK-USDT$10.34
0.0042673 Eth
$6,989,159.00
660,125.196 LINK
3.5398%
8
P2B
LINK-USDT$10.34
0.0042679 Eth
$6,538,908.00
632,324.060 LINK
3.3908%
9
BTSE
LINK-USDT$10.33
0.0042632 Eth
$6,120,277.00
592,213.362 LINK
3.1757%
10
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$10.37
0.0042807 Eth
$6,109,507.00
584,703.173 0X514910771AF9CA656AF840DFF83E8264ECF986CA
3.1354%
11
Ourbit
LINK-USDT$10.33
0.0042634 Eth
$5,689,186.00
538,732.320 LINK
2.8889%
12
Slex
LINK-USDT$10.35
0.0042696 Eth
$5,216,526.00
492,385.780 LINK
2.6404%
13
Azbit
LINK-USDT$10.35
0.0042726 Eth
$4,573,613.00
429,599.550 LINK
2.3037%
14
DigiFinex
LINK-USDT$10.34
0.0042677 Eth
$4,212,559.00
407,383.740 LINK
2.1845%
15
Biconomy.com
LINK-USDT$10.35
0.0042633 Eth
$3,751,126.00
353,791.660 LINK
1.8972%
16
Bitunix
LINK-USDT$10.36
0.0042698 Eth
$3,429,104.00
331,079.910 LINK
1.7754%
17
CoinW
LINK-USDT$10.33
0.0042648 Eth
$3,148,342.00
304,637.020 LINK
1.6336%
18
XT.COM
LINK-USDT$10.34
0.0042678 Eth
$3,137,842.00
297,384.150 LINK
1.5947%
19
Hotcoin
LINK-USDT$10.35
0.0042719 Eth
$2,540,311.00
245,395.200 LINK
1.3159%
20
Trubit
LINK-USDT$10.34
0.0042657 Eth
$2,217,101.00
209,890.920 LINK
1.1255%
21
Coinstore
LINK-USDT$10.35
0.0042681 Eth
$2,183,469.00
206,886.790 LINK
1.1094%
22
LBank
LINK-USDT$10.34
0.0042664 Eth
$2,031,168.00
196,462.320 LINK
1.0535%
23
ProBit Global
LINK-USDT$10.36
0.0042678 Eth
$1,903,760.00
183,840.178 LINK
0.9858%
24
KuCoin
LINK-USDT$10.33
0.0042627 Eth
$1,692,606.00
163,898.023 LINK
0.8789%
25
AscendEX (BitMax)
LINK-USDT$10.30
0.0042535 Eth
$1,650,592.00
160,176.800 LINK
0.8589%
26
BYDFi
LINK-USDT$10.35
0.0042688 Eth
$1,522,460.00
147,034.440 LINK
0.7885%
27
Binance
LINK-BTC$10.33
0.0042636 Eth
$1,300,044.00
124,728.020 LINK
0.6688%
28
Nonkyc.io
LINK-USDT$10.37
0.0042773 Eth
$1,244,518.00
116,284.152 LINK
0.6236%
29
Bitvavo
LINK-EUR$10.36
0.0042712 Eth
$1,189,970.00
114,862.156 LINK
0.6159%
30
Binance
LINK-FDUSD$10.35
0.0042671 Eth
$1,111,764.00
105,238.790 LINK
0.5643%
31
WhiteBIT
LINK-BTC$10.33
0.0042643 Eth
$1,049,338.00
101,572.340 LINK
0.5447%
32
Dex-Trade
LINK-USDT$10.34
0.0042661 Eth
$992,386.00
95,960.350 LINK
0.5146%
33
HashKey Global
LINK-USDT$10.35
0.0042696 Eth
$907,117.00
87,953.279 LINK
0.4716%
34
Azbit
LINK-ETH$10.36
0.0042734 Eth
$784,713.00
74,797.649 LINK
0.4011%
35
Binance
LINK-USDC$10.36
0.0042703 Eth
$657,005.00
62,373.930 LINK
0.3345%
36
Tokpie
LINK-USDT$10.34
0.0042627 Eth
$630,937.00
61,030.279 LINK
0.3273%
37
EXMO
LINK-USDT$10.33
0.0042649 Eth
$627,703.00
60,744.094 LINK
0.3257%
38
LATOKEN
LINK-USDT$10.37
0.0042803 Eth
$609,083.00
58,729.204 LINK
0.3149%
39
CoinEx
LINK-USDT$10.34
0.0042681 Eth
$604,982.00
57,482.557 LINK
0.3082%
40
AscendEX (BitMax)
LINK-BTC$10.37
0.0042805 Eth
$575,834.00
55,528.000 LINK
0.2978%
41
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.38
0.0042816 Eth
$574,536.00
55,069.311 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2953%
42
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.35
0.0042728 Eth
$541,031.00
51,953.325 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2786%
43
BigONE
LINK-USDT$10.37
0.0042769 Eth
$467,972.00
45,124.230 LINK
0.2420%
44
itBit
LINK-USD$10.36
0.0042625 Eth
$450,878.00
43,521.014 LINK
0.2334%
45
PointPay
LINK-USDT$10.36
0.0042730 Eth
$420,986.00
39,894.805 LINK
0.2139%
46
ProBit Global
LINK-BTC$10.35
0.0042691 Eth
$408,984.00
39,504.369 LINK
0.2118%
47
WhiteBIT
LINK-EUR$10.34
0.0042552 Eth
$396,254.00
38,324.910 LINK
0.2055%
48
Bybit
LINK-USDC$10.35
0.0042702 Eth
$385,805.00
36,391.202 LINK
0.1951%
49
EarnBIT
LINK-USDT$10.34
0.0042597 Eth
$325,650.00
30,812.477 LINK
0.1652%
50
Phemex
LINK-USDT$10.35
0.0042669 Eth
$312,789.00
30,208.200 LINK
0.1620%
51
WhiteBIT
LINK-TRY$10.42
0.0042914 Eth
$299,047.00
28,701.640 LINK
0.1539%
52
Coinbase Exchange
LINK-EUR$10.36
0.0042704 Eth
$294,858.00
28,470.500 LINK
0.1527%
53
Coinbase Exchange
LINK-USDT$10.36
0.0042761 Eth
$290,116.00
27,992.294 LINK
0.1501%
54
LATOKEN
LINK-BTC$10.32
0.0042580 Eth
$261,305.00
25,319.700 LINK
0.1358%
55
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$10.36
0.0042764 Eth
$257,924.00
24,691.771 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1324%
56
Binance
LINK-EUR$10.36
0.0042679 Eth
$252,093.00
23,802.700 LINK
0.1276%
57
Slex
LINK-ETH$10.35
0.0042665 Eth
$190,753.00
18,179.740 LINK
0.0975%
58
BitMart
LINK-BTC$10.35
0.0042704 Eth
$190,641.00
18,425.040 LINK
0.0988%
59
Binance
LINK-ETH$10.35
0.0042677 Eth
$178,891.00
17,141.960 LINK
0.0919%
60
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.37
0.0042789 Eth
$177,610.00
17,065.507 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0915%
61
BitDelta
LINK-USDT$10.35
0.0042680 Eth
$170,565.00
16,081.000 LINK
0.0862%
62
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$10.40
0.0042897 Eth
$169,893.00
173,218.768 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.9289%
63
Bitbank
LINK-JPY$10.38
0.0042854 Eth
$160,897.00
15,497.538 LINK
0.0831%
64
BYDFi
LINK-USDC$10.36
0.0042712 Eth
$135,499.00
13,079.080 LINK
0.0701%
65
OKX
LINK-USDC$10.35
0.0042709 Eth
$133,696.00
12,675.871 LINK
0.0680%
66
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$10.31
0.0042542 Eth
$123,667.00
11,859.934 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0636%
67
Coinbase Exchange
LINK-GBP$10.36
0.0042728 Eth
$120,007.00
11,580.890 LINK
0.0621%
68
Gemini
LINK-USD$10.37
0.0042787 Eth
$109,705.00
10,583.224 LINK
0.0568%
69
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.26
0.0042349 Eth
$106,068.00
10,198.999 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0547%
70
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$10.34
0.0042684 Eth
$105,969.00
9,935.182 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0533%
71
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$10.36
0.0042722 Eth
$100,109.00
102,317.300 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5487%
72
Binance
LINK-TRY$10.38
0.0042839 Eth
$85,649.00
8,093.100 LINK
0.0434%
73
GMO Japan
LINK-JPY$10.39
0.0042893 Eth
$78,748.00
7,578.100 LINK
0.0406%
74
Slex
LINK-BTC$10.34
0.0042690 Eth
$75,884.00
7,280.700 LINK
0.0390%
75
Mercado Bitcoin
LINK-BRL$10.39
0.0042865 Eth
$62,030.00
5,971.655 LINK
0.0320%
76
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$10.40
0.0042897 Eth
$58,300.00
5,500.611 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0295%
77
Binance
LINK-BRL$10.41
0.0042908 Eth
$57,940.00
5,468.730 LINK
0.0293%
78
Kraken
LINK-GBP$10.31
0.0042546 Eth
$57,698.00
5,595.186 LINK
0.0300%
79
PointPay
LINK-BTC$10.35
0.0042681 Eth
$49,273.00
4,731.612 LINK
0.0254%
80
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$10.35
0.0042728 Eth
$43,970.00
4,165.353 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0223%
81
Bitso
LINK-USD$10.36
0.0042757 Eth
$38,180.00
3,685.293 LINK
0.0198%
82
Binance
LINK-BNB$10.37
0.0042696 Eth
$35,735.00
3,421.603 LINK
0.0183%
83
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.35
0.0042683 Eth
$34,023.00
3,260.600 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0175%
84
Bitcointry
LINK-USDT$10.36
0.0042708 Eth
$30,713.00
2,906.906 LINK
0.0156%
85
EXMO
LINK-BTC$10.34
0.0042657 Eth
$30,457.00
2,946.469 LINK
0.0158%
86
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$10.34
0.0042626 Eth
$28,363.00
29,166.439 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.1564%
87
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$10.36
0.0042760 Eth
$27,369.00
2,615.034 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0140%
88
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$10.36
0.0042754 Eth
$26,020.00
2,498.106 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0134%
89
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$10.34
0.0042620 Eth
$20,319.00
1,956.563 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0105%
90
Binance US
LINK-USDT$10.34
0.0042661 Eth
$16,322.76
1,578.355 LINK
0.0085%
91
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$10.35
0.0042667 Eth
$15,763.89
1,483.181 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0080%
92
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$10.40
0.0042897 Eth
$15,747.50
1,510.263 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0081%
93
Pangolin
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$10.31
0.0042537 Eth
$12,860.27
1,269.501 0X5947BB275C521040051D82396192181B413227A3
0.0068%
94
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$10.35
0.0042728 Eth
$12,414.63
12,705.788 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0681%
95
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$10.38
0.0042815 Eth
$11,572.36
1,110.472 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0060%
96
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$10.31
0.0042566 Eth
$9,336.90
15.628 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0001%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$10.37
0.0042782 Eth
$9,128.21
862.017 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0046%
98
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$10.35
0.0042667 Eth
$7,186.71
678.217 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0036%
99
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$10.29
0.0042454 Eth
$6,231.76
612.644 0X5947BB275C521040051D82396192181B413227A3
0.0033%
100
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$10.36
0.0042743 Eth
$4,361.85
411.186 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0022%

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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