ETH Price: $3,309.76 (-0.17%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

730,497 ( 0.014%)

Market

Price

$25.27 @ 0.007635 ETH (+2.02%)

Onchain Market Cap

$25,270,000,000.00

Circulating Supply Market Cap

$16,124,351,140.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0.000029608629484126 LINK

Value
$0.00 ( ~0 Eth) [0.0000%]
0xa3abC808df3f9AB2cc1d6b56F27Ad2096DdA7155
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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 22872.73% |ETH 0.0003846 1885.18%

Market

Volume (24H):$559,332,763.00
Market Capitalization:$16,124,351,140.00
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
Websea
LINK-USDT$25.26
0.0076312 Eth
$71,175,995.00
0.000 LINK
0.0000%
2
Coinbase Exchange
LINK-USD$25.27
0.0076333 Eth
$36,767,137.00
1,454,971.800 LINK
15.4876%
3
Bybit
LINK-USDT$25.26
0.0076287 Eth
$25,651,790.00
1,014,186.502 LINK
10.7956%
4
WEEX
LINK-USDT$25.26
0.0076316 Eth
$22,735,657.00
899,405.030 LINK
9.5738%
5
HTX
LINK-USDT$25.28
0.0076347 Eth
$13,198,720.00
522,417.250 LINK
5.5609%
6
OKX
LINK-USDT$25.29
0.0076402 Eth
$11,276,562.00
445,636.289 LINK
4.7436%
7
Deepcoin
LINK-USDT$25.29
0.0076505 Eth
$7,948,721.00
322,582.320 LINK
3.4338%
8
BVOX
LINK-USDT$25.31
0.0076510 Eth
$7,437,133.00
294,402.620 LINK
3.1338%
9
Gate.io
LINK-USDT$25.27
0.0076344 Eth
$6,729,624.00
266,403.580 LINK
2.8358%
10
KuCoin
LINK-USDT$25.26
0.0076291 Eth
$6,624,473.00
262,270.576 LINK
2.7918%
11
XT.COM
LINK-USDT$25.27
0.0076412 Eth
$6,584,073.00
260,579.230 LINK
2.7738%
12
Azbit
LINK-USDT$25.26
0.0076339 Eth
$6,543,662.00
258,936.621 LINK
2.7563%
13
Coinstore
LINK-USDT$25.23
0.0076279 Eth
$6,079,270.00
240,671.520 LINK
2.5619%
14
Bitunix
LINK-USDT$25.26
0.0076383 Eth
$5,526,494.00
218,800.260 LINK
2.3290%
15
BTSE
LINK-USDT$25.26
0.0076371 Eth
$4,341,162.00
171,842.091 LINK
1.8292%
16
CoinW
LINK-USDT$25.31
0.0076483 Eth
$4,091,034.00
161,639.570 LINK
1.7206%
17
BYDFi
LINK-USDT$25.30
0.0076407 Eth
$3,694,802.00
146,063.050 LINK
1.5548%
18
Coinbase Exchange
LINK-EUR$25.33
0.0076560 Eth
$3,485,453.00
137,618.900 LINK
1.4649%
19
LATOKEN
LINK-USDT$25.25
0.0076353 Eth
$3,145,738.00
124,597.091 LINK
1.3263%
20
FMCPAY
LINK-USDT$25.26
0.0076368 Eth
$3,102,359.00
122,640.936 LINK
1.3055%
21
Kraken
LINK-USD$25.29
0.0076392 Eth
$2,968,716.00
117,379.535 LINK
1.2495%
22
QMall
LINK-USDT$25.26
0.0076437 Eth
$2,710,255.00
107,230.535 LINK
1.1414%
23
Bitvavo
LINK-EUR$25.30
0.0076480 Eth
$2,595,909.00
102,623.923 LINK
1.0924%
24
Hotcoin
LINK-USDT$25.31
0.0076439 Eth
$2,302,750.00
90,996.450 LINK
0.9686%
25
Dex-Trade
LINK-USDT$25.29
0.0076520 Eth
$2,140,575.00
84,655.704 LINK
0.9011%
26
Bitstamp
LINK-USD$25.29
0.0076387 Eth
$2,101,236.00
83,085.658 LINK
0.8844%
27
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.36
0.0076606 Eth
$1,757,464.00
69,607.021 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.7409%
28
FMCPAY
LINK-ETH$25.27
0.0076382 Eth
$1,676,305.00
66,723.520 LINK
0.7102%
29
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.30
0.0076489 Eth
$1,531,476.00
61,016.821 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.6495%
30
FMCPAY
LINK-BTC$25.24
0.0076344 Eth
$1,418,596.00
56,077.400 LINK
0.5969%
31
Bitstamp
LINK-EUR$25.32
0.0076467 Eth
$1,415,556.00
55,914.703 LINK
0.5952%
32
Coinbase Exchange
LINK-GBP$25.23
0.0076276 Eth
$1,348,037.00
53,427.410 LINK
0.5687%
33
CoinEx
LINK-USDT$25.26
0.0076317 Eth
$1,303,133.00
51,387.561 LINK
0.5470%
34
OKX
LINK-USDC$25.30
0.0076417 Eth
$1,174,163.00
46,146.626 LINK
0.4912%
35
tanX
LINK-USDC$25.25
0.0076349 Eth
$1,083,486.00
42,798.080 LINK
0.4556%
36
PointPay
LINK-USDT$25.17
0.0076241 Eth
$1,055,173.00
41,769.945 LINK
0.4446%
37
Trubit
LINK-USDT$25.25
0.0076422 Eth
$892,397.00
35,341.310 LINK
0.3762%
38
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.29
0.0076434 Eth
$807,613.00
32,054.194 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.3412%
39
WhiteBIT
LINK-TRY$25.25
0.0076468 Eth
$745,630.00
29,529.110 LINK
0.3143%
40
EXMO
LINK-USDT$25.30
0.0076420 Eth
$744,220.00
29,415.986 LINK
0.3131%
41
Phemex
LINK-USDT$25.26
0.0076347 Eth
$681,018.00
26,964.120 LINK
0.2870%
42
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$25.33
0.0076521 Eth
$525,978.00
20,824.651 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2217%
43
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$25.23
0.0076279 Eth
$512,332.00
20,287.900 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2160%
44
Coinbase Exchange
LINK-USDT$25.21
0.0076230 Eth
$505,361.00
20,048.757 LINK
0.2134%
45
WhiteBIT
LINK-BTC$25.23
0.0076243 Eth
$486,311.00
19,275.090 LINK
0.2052%
46
Bitbank
LINK-JPY$25.28
0.0076351 Eth
$438,606.00
17,352.939 LINK
0.1847%
47
Gemini
LINK-USD$25.28
0.0076363 Eth
$384,462.00
15,209.041 LINK
0.1619%
48
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.18
0.0076065 Eth
$375,775.00
14,961.251 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1593%
49
BigONE
LINK-USDT$25.28
0.0076355 Eth
$373,275.00
14,767.360 LINK
0.1572%
50
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.22
0.0076243 Eth
$346,879.00
13,828.842 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1472%
51
QMall
LINK-USDC$25.24
0.0076334 Eth
$325,102.00
12,841.846 LINK
0.1367%
52
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$25.29
0.0076434 Eth
$324,257.00
323,843.062 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
3.4472%
53
BitMart
LINK-BTC$25.30
0.0076410 Eth
$302,118.00
11,942.620 LINK
0.1271%
54
Coinbase Exchange
LINK-BTC$25.29
0.0076397 Eth
$274,159.00
10,840.210 LINK
0.1154%
55
LATOKEN
LINK-BTC$25.30
0.0076459 Eth
$273,412.00
10,806.188 LINK
0.1150%
56
Slex
LINK-ETH$25.26
0.0076382 Eth
$260,546.00
10,384.530 LINK
0.1105%
57
Bitci TR
LINK-TRY$25.47
0.0076923 Eth
$232,140.00
9,138.320 LINK
0.0973%
58
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$25.29
0.0076434 Eth
$224,523.00
8,889.254 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0946%
59
WhiteBIT
LINK-EUR$25.29
0.0076400 Eth
$222,070.00
8,779.440 LINK
0.0935%
60
BitStorage
LINK-ETH$25.29
0.0076394 Eth
$216,969.00
8,579.310 LINK
0.0913%
61
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$25.29
0.0076474 Eth
$186,767.00
7,383.549 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0786%
62
GMO Japan
LINK-JPY$25.30
0.0076430 Eth
$171,334.00
6,771.600 LINK
0.0721%
63
Bitkub
LINK-THB$25.51
0.0077125 Eth
$170,856.00
6,696.333 LINK
0.0713%
64
Bitso
LINK-USD$25.28
0.0076377 Eth
$151,434.00
5,989.265 LINK
0.0638%
65
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$25.37
0.0076617 Eth
$108,656.00
4,250.131 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0452%
66
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$25.24
0.0076241 Eth
$98,064.00
3,901.142 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0415%
67
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$25.21
0.0076157 Eth
$96,586.00
96,621.783 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
1.0285%
68
BitMart
LINK-ETH$25.30
0.0076426 Eth
$96,033.00
3,795.360 LINK
0.0404%
69
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$25.18
0.0076072 Eth
$85,975.00
3,418.635 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0364%
70
Hotcoin
LINK-BTC$25.30
0.0076459 Eth
$80,225.00
3,170.770 LINK
0.0338%
71
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$25.19
0.0076081 Eth
$65,973.00
2,614.568 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0278%
72
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$25.27
0.0076435 Eth
$50,263.00
50,255.488 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.5350%
73
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$25.32
0.0076523 Eth
$41,845.00
1,654.881 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0176%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$25.19
0.0076129 Eth
$31,175.00
1,234.038 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0131%
75
Dex-Trade
LINK-ETH$25.28
0.0076361 Eth
$28,107.00
1,111.880 LINK
0.0118%
76
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$25.21
0.0076245 Eth
$24,766.00
976.652 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0104%
77
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$25.16
0.0076041 Eth
$23,338.00
923.135 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0098%
78
Hotcoin
LINK-ETH$25.25
0.0076403 Eth
$23,333.00
924.040 LINK
0.0098%
79
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$25.31
0.0076464 Eth
$21,674.00
841.990 0X5947BB275C521040051D82396192181B413227A3
0.0090%
80
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$25.31
0.0076499 Eth
$20,537.00
27.297 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0003%
81
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$25.22
0.0076244 Eth
$19,119.33
755.561 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0080%
82
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$25.17
0.0076031 Eth
$16,599.49
655.702 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0070%
83
Pangolin
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$25.27
0.0076344 Eth
$16,538.20
642.710 0X5947BB275C521040051D82396192181B413227A3
0.0068%
84
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.34
0.0076596 Eth
$11,776.73
468.048 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0050%
85
Gemini
LINK-BTC$25.19
0.0076095 Eth
$11,687.89
463.992 LINK
0.0049%
86
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$25.35
0.0076560 Eth
$9,994.91
30.031 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0003%
87
Biswap V3
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.31
0.0076495 Eth
$8,299.99
330.027 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0035%
88
Bitexen
LINK-TRY$25.09
0.0075820 Eth
$5,770.06
229.973 LINK
0.0024%
89
CoinEx
LINK-USDC$25.30
0.0076411 Eth
$5,707.29
225.866 LINK
0.0024%
90
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$25.29
0.0076394 Eth
$5,145.52
205.701 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0022%
91
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$25.24
0.0076306 Eth
$4,686.74
4,683.710 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0499%
92
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.18
0.0076116 Eth
$3,404.85
135.942 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0014%
93
Ace
LINK-USDT$25.33
0.0076546 Eth
$2,755.05
109.060 LINK
0.0012%
94
CoinEx
LINK-BTC$25.32
0.0076496 Eth
$2,736.60
108.159 LINK
0.0012%
95
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$25.22
0.0076167 Eth
$2,337.95
93.124 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0010%
96
Lydia Finance
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$25.17
0.0076083 Eth
$2,166.00
84.079 0X5947BB275C521040051D82396192181B413227A3
0.0009%
97
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.14
0.0076022 Eth
$1,921.03
76.179 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0008%
98
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC3C7D422809852031B44AB29EEC9F1EFF2A58756$25.28
0.0076346 Eth
$1,540.22
57.177 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0006%
99
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$25.14
0.0076053 Eth
$1,385.00
54.624 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0006%
100
Retro
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.18
0.0076185 Eth
$814.73
32.510 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0003%

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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