ETH Price: $2,339.76 (-4.37%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

721,233 ( 0.009%)

Market

Price

$10.50 @ 0.004488 ETH (-2.33%)

Onchain Market Cap

$10,500,000,000.00

Circulating Supply Market Cap

$6,593,813,859.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
100.69191453 LINK

Value
$1,057.27 ( ~0.4518706178817 Eth) [0.0000%]
0xD8528aDF57De43af91c544d2698FBbE29348e635
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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 9445.45% |ETH 0.0003846 1066.93%

Market

Volume (24H):$529,772,393.00
Market Capitalization:$6,593,813,859.00
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
LBank
LINK-USDT$10.53
0.0044972 Eth
$38,246,023.00
3,630,846.390 LINK
15.3292%
2
Binance
LINK-USDT$10.54
0.0045080 Eth
$35,538,902.00
3,361,511.860 LINK
14.1921%
3
WhiteBIT
LINK-USDT$10.55
0.0045031 Eth
$29,142,020.00
2,762,911.230 LINK
11.6649%
4
Bybit
LINK-USDT$10.53
0.0045035 Eth
$21,854,212.00
2,068,450.997 LINK
8.7329%
5
Coinbase Exchange
LINK-USD$10.55
0.0045013 Eth
$18,819,790.00
1,784,712.180 LINK
7.5350%
6
HTX
LINK-USDT$10.53
0.0045020 Eth
$13,135,931.00
1,239,573.687 LINK
5.2334%
7
Bitget
LINK-USDT$10.54
0.0045065 Eth
$9,812,168.00
925,893.750 LINK
3.9091%
8
P2B
LINK-USDT$10.54
0.0045021 Eth
$6,586,079.00
624,634.880 LINK
2.6372%
9
OKX
LINK-USDT$10.53
0.0045022 Eth
$6,279,017.00
593,553.786 LINK
2.5060%
10
Slex
LINK-USDT$10.53
0.0045038 Eth
$6,095,512.00
574,529.340 LINK
2.4256%
11
Azbit
LINK-USDT$10.54
0.0045049 Eth
$4,859,360.00
457,893.060 LINK
1.9332%
12
DigiFinex
LINK-USDT$10.55
0.0045110 Eth
$4,623,890.00
438,321.190 LINK
1.8506%
13
Biconomy.com
LINK-USDT$10.53
0.0045013 Eth
$4,254,243.00
400,708.680 LINK
1.6918%
14
KuCoin
LINK-USDT$10.54
0.0045080 Eth
$4,156,607.00
394,282.320 LINK
1.6646%
15
XT.COM
LINK-USDT$10.55
0.0045073 Eth
$3,311,296.00
313,037.020 LINK
1.3216%
16
CoinW
LINK-USDT$10.55
0.0045071 Eth
$2,766,653.00
262,283.000 LINK
1.1073%
17
Kraken
LINK-USD$10.56
0.0045135 Eth
$2,522,376.00
238,941.005 LINK
1.0088%
18
ProBit Global
LINK-USDT$10.53
0.0045013 Eth
$2,503,863.00
237,699.730 LINK
1.0036%
19
Coinstore
LINK-USDT$10.52
0.0044962 Eth
$2,092,646.00
197,866.120 LINK
0.8354%
20
Trubit
LINK-USDT$10.56
0.0045080 Eth
$2,052,317.00
193,686.360 LINK
0.8177%
21
Bitunix
LINK-USDT$10.54
0.0044993 Eth
$1,735,970.00
164,661.880 LINK
0.6952%
22
BYDFi
LINK-USDT$10.53
0.0044968 Eth
$1,697,441.00
161,157.820 LINK
0.6804%
23
AscendEX (BitMax)
LINK-USDT$10.55
0.0045127 Eth
$1,696,041.00
160,713.400 LINK
0.6785%
24
FameEX
LINK-USDT$10.55
0.0045045 Eth
$1,415,181.00
133,848.877 LINK
0.5651%
25
Bitexen
LINK-TRY$10.57
0.0045186 Eth
$1,372,598.00
129,803.910 LINK
0.5480%
26
WhiteBIT
LINK-BTC$10.55
0.0045052 Eth
$1,294,105.00
122,635.990 LINK
0.5178%
27
Dex-Trade
LINK-USDT$10.54
0.0045021 Eth
$1,182,400.00
112,160.730 LINK
0.4735%
28
Bitvavo
LINK-EUR$10.54
0.0045046 Eth
$1,024,861.00
97,221.788 LINK
0.4105%
29
BTSE
LINK-USDT$10.53
0.0044994 Eth
$902,687.00
85,713.554 LINK
0.3619%
30
Azbit
LINK-ETH$10.54
0.0045059 Eth
$893,360.00
85,174.623 LINK
0.3596%
31
Bitexen
LINK-USDT$10.55
0.0045063 Eth
$852,098.00
80,802.440 LINK
0.3411%
32
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$10.52
0.0044970 Eth
$816,638.00
77,373.689 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.3267%
33
FMCPAY
LINK-USDT$10.53
0.0044965 Eth
$773,529.00
72,935.616 LINK
0.3079%
34
WhiteBIT
LINK-EUR$10.53
0.0044942 Eth
$726,603.00
69,024.120 LINK
0.2914%
35
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.53
0.0044960 Eth
$654,199.00
62,786.119 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2651%
36
BigONE
LINK-USDT$10.60
0.0045266 Eth
$562,112.00
53,022.400 LINK
0.2239%
37
PointPay
LINK-USDT$10.55
0.0045055 Eth
$542,209.00
51,251.652 LINK
0.2164%
38
tanX
LINK-USDC$10.53
0.0045026 Eth
$525,893.00
49,632.560 LINK
0.2095%
39
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.47
0.0044732 Eth
$512,123.00
49,149.673 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2075%
40
EXMO
LINK-USDT$10.55
0.0045042 Eth
$503,543.00
47,728.383 LINK
0.2015%
41
LATOKEN
LINK-USDT$10.55
0.0045049 Eth
$499,288.00
47,310.410 LINK
0.1997%
42
FMCPAY
LINK-BTC$10.53
0.0045029 Eth
$454,100.00
42,977.700 LINK
0.1814%
43
ProBit Global
LINK-BTC$10.54
0.0045047 Eth
$420,241.00
39,864.099 LINK
0.1683%
44
Bybit
LINK-USDC$10.55
0.0045114 Eth
$417,408.00
39,340.010 LINK
0.1661%
45
FMCPAY
LINK-ETH$10.53
0.0045016 Eth
$403,602.00
38,592.640 LINK
0.1629%
46
Phemex
LINK-USDT$10.55
0.0045064 Eth
$399,034.00
37,831.150 LINK
0.1597%
47
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.54
0.0045077 Eth
$351,872.00
33,652.023 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1421%
48
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.51
0.0044891 Eth
$345,379.00
33,067.778 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1396%
49
EarnBIT
LINK-USDT$10.54
0.0045065 Eth
$298,919.00
28,261.790 LINK
0.1193%
50
Coinbase Exchange
LINK-EUR$10.55
0.0045112 Eth
$263,861.00
25,011.420 LINK
0.1056%
51
CoinEx
LINK-USDT$10.54
0.0045044 Eth
$214,919.00
20,313.396 LINK
0.0858%
52
BitDelta
LINK-USDT$10.54
0.0045078 Eth
$180,716.00
17,073.000 LINK
0.0721%
53
LATOKEN
LINK-BTC$10.54
0.0044975 Eth
$179,702.00
17,055.734 LINK
0.0720%
54
OKX
LINK-USDC$10.54
0.0045060 Eth
$174,577.00
16,508.038 LINK
0.0697%
55
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$10.57
0.0045197 Eth
$172,931.00
16,400.657 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0692%
56
BitMart
LINK-BTC$10.55
0.0045014 Eth
$168,294.00
15,959.380 LINK
0.0674%
57
Binance
LINK-BRL$10.62
0.0045375 Eth
$159,955.00
15,121.050 LINK
0.0638%
58
BYDFi
LINK-USDC$10.53
0.0045017 Eth
$154,757.00
14,697.540 LINK
0.0621%
59
Coinbase Exchange
LINK-GBP$10.55
0.0045126 Eth
$154,630.00
14,652.870 LINK
0.0619%
60
Bitbank
LINK-JPY$10.52
0.0044886 Eth
$145,628.00
13,849.162 LINK
0.0585%
61
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$10.56
0.0045149 Eth
$139,668.00
13,197.063 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0557%
62
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$10.50
0.0044883 Eth
$126,701.00
127,360.435 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.5377%
63
Bitci TR
LINK-TRY$10.50
0.0044887 Eth
$104,528.00
9,796.040 LINK
0.0414%
64
WhiteBIT
LINK-TRY$10.58
0.0045183 Eth
$100,228.00
9,470.540 LINK
0.0400%
65
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$10.50
0.0044883 Eth
$93,923.00
8,900.669 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0376%
66
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$10.52
0.0044920 Eth
$87,570.00
87,694.493 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3702%
67
Slex
LINK-BTC$10.55
0.0045063 Eth
$83,159.00
7,869.500 LINK
0.0332%
68
Slex
LINK-ETH$10.53
0.0044979 Eth
$62,289.00
5,947.760 LINK
0.0251%
69
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$10.53
0.0044956 Eth
$56,443.00
5,359.046 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0226%
70
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$10.51
0.0044891 Eth
$56,397.00
56,688.214 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.2393%
71
LATOKEN
LINK-ETH$10.54
0.0044988 Eth
$53,798.00
5,104.544 LINK
0.0216%
72
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.50
0.0044873 Eth
$52,654.00
5,054.247 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0213%
73
PointPay
LINK-BTC$10.54
0.0045052 Eth
$52,337.00
4,956.915 LINK
0.0209%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$10.57
0.0045176 Eth
$49,635.00
4,702.715 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0199%
75
Bitget
LINK-EUR$10.54
0.0045059 Eth
$46,948.00
4,417.300 LINK
0.0186%
76
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$10.49
0.0044789 Eth
$44,683.00
4,292.999 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0181%
77
Binance US
LINK-USDT$10.53
0.0044978 Eth
$37,693.00
3,578.294 LINK
0.0151%
78
Uniswap V3 (Ethereum)
0XA95C5EBB86E0DE73B4FB8C47A45B792CFEA28C23-0X514910771AF9CA656AF840DFF83E8264ECF986CA$10.49
0.0044838 Eth
$34,897.00
195,380.179 0XA95C5EBB86E0DE73B4FB8C47A45B792CFEA28C23
0.8249%
79
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$10.53
0.0044970 Eth
$33,058.00
3,125.973 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0132%
80
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$10.52
0.0044931 Eth
$32,634.00
3,104.319 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0131%
81
EXMO
LINK-BTC$10.53
0.0045029 Eth
$30,059.00
2,854.560 LINK
0.0121%
82
Foxbit
LINK-BRL$10.55
0.0045053 Eth
$25,857.00
2,448.088 LINK
0.0103%
83
KuCoin
LINK-BTC$10.55
0.0045109 Eth
$21,719.00
2,058.865 LINK
0.0087%
84
KuCoin
LINK-KCS$10.49
0.0044857 Eth
$17,300.16
1,649.221 LINK
0.0070%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$10.56
0.0045082 Eth
$14,215.82
1,345.698 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0057%
86
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$10.50
0.0044832 Eth
$9,072.91
9,106.856 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0384%
87
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$10.53
0.0045028 Eth
$8,308.52
14.199 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0001%
88
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$10.55
0.0045043 Eth
$7,869.08
743.442 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0031%
89
CoinEx
LINK-BTC$10.55
0.0045081 Eth
$7,654.84
722.904 LINK
0.0031%
90
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$10.50
0.0044913 Eth
$7,432.14
702.931 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0030%
91
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$10.54
0.0045205 Eth
$4,404.41
420.519 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0018%
92
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$10.51
0.0044911 Eth
$4,101.50
387.445 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0016%
93
Ramses V2
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.48
0.0044824 Eth
$3,263.48
313.536 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0013%
94
CoinEx
LINK-USDC$10.54
0.0045039 Eth
$3,224.33
303.194 LINK
0.0013%
95
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$10.57
0.0045105 Eth
$3,117.52
295.422 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0012%
96
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$10.55
0.0045043 Eth
$1,905.85
180.008 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0008%
97
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.50
0.0044804 Eth
$1,845.55
177.334 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0007%
98
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$10.47
0.0044703 Eth
$1,640.39
155.454 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0007%
99
Balancer V2 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$10.52
0.0044982 Eth
$1,181.04
111.919 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0005%
100
Osmosis
IBC/D3327A763C23F01EC43D1F0DB3CEFEC390C362569B6FD191F40A5192F8960049-UOSMO$10.48
0.0044805 Eth
$969.77
92.554 IBC/D3327A763C23F01EC43D1F0DB3CEFEC390C362569B6FD191F40A5192F8960049
0.0004%

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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