ETH Price: $3,659.65 (+0.52%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

729,723 (0.00%)

Market

Price

$23.80 @ 0.006503 ETH (+2.02%)

Onchain Market Cap

$23,800,000,000.00

Circulating Supply Market Cap

$15,020,103,413.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0xbf5d41687e5dc71389d2c91db6b2de6f8e5436a5
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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 21536.36% |ETH 0.0003846 1590.85%

Market

Volume (24H):$748,124,230.00
Market Capitalization:$15,020,103,413.00
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
Coinbase Exchange
LINK-USD$23.69
0.0064610 Eth
$28,558,780.00
1,205,774.970 LINK
10.3544%
2
WhiteBIT
LINK-USDT$23.74
0.0064681 Eth
$24,374,039.00
1,026,675.040 LINK
8.8164%
3
Slex
LINK-USDT$23.70
0.0064657 Eth
$24,004,742.00
1,028,161.950 LINK
8.8292%
4
Bitget
LINK-USDT$23.73
0.0064743 Eth
$19,767,940.00
846,398.158 LINK
7.2683%
5
Bybit
LINK-USDT$23.71
0.0064680 Eth
$17,896,705.00
765,707.892 LINK
6.5754%
6
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.76
0.0064796 Eth
$17,779,971.00
751,520.857 0X514910771AF9CA656AF840DFF83E8264ECF986CA
6.4536%
7
MEXC
LINK-USDT$23.97
0.0065237 Eth
$17,423,960.00
726,876.140 LINK
6.2419%
8
P2B
LINK-USDT$23.74
0.0064714 Eth
$14,426,253.00
607,714.800 LINK
5.2186%
9
CoinW
LINK-USDT$23.74
0.0064699 Eth
$12,751,740.00
537,092.240 LINK
4.6122%
10
OKX
LINK-USDT$23.71
0.0064665 Eth
$11,033,635.00
471,855.793 LINK
4.0520%
11
XT.COM
LINK-USDT$23.81
0.0064848 Eth
$6,974,759.00
298,308.830 LINK
2.5617%
12
Azbit
LINK-USDT$23.73
0.0064716 Eth
$6,964,231.00
297,929.157 LINK
2.5584%
13
Coinstore
LINK-USDT$23.71
0.0064653 Eth
$6,412,126.00
274,383.800 LINK
2.3562%
14
Bithumb
LINK-KRW$23.74
0.0064759 Eth
$4,954,523.00
208,683.753 LINK
1.7920%
15
BYDFi
LINK-USDT$23.67
0.0064580 Eth
$4,595,725.00
194,140.370 LINK
1.6671%
16
BTSE
LINK-USDT$23.77
0.0064767 Eth
$3,457,633.00
145,447.321 LINK
1.2490%
17
LATOKEN
LINK-USDT$23.82
0.0064763 Eth
$3,319,810.00
139,375.629 LINK
1.1969%
18
Kraken
LINK-USD$23.73
0.0064733 Eth
$2,979,786.00
125,568.846 LINK
1.0783%
19
Hotcoin
LINK-USDT$23.71
0.0064662 Eth
$2,531,513.00
106,769.220 LINK
0.9169%
20
Dex-Trade
LINK-USDT$23.95
0.0065114 Eth
$2,229,087.00
93,062.740 LINK
0.7992%
21
Bitvavo
LINK-EUR$23.71
0.0064685 Eth
$2,133,747.00
89,975.925 LINK
0.7727%
22
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.87
0.0065062 Eth
$2,028,077.00
85,880.864 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.7375%
23
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.78
0.0064832 Eth
$1,997,497.00
84,580.252 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.7263%
24
Dcoin
LINK-USDT$23.74
0.0064730 Eth
$1,955,822.00
82,392.000 LINK
0.7075%
25
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.77
0.0064798 Eth
$1,808,648.00
76,606.829 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.6578%
26
CoinEx
LINK-USDT$23.81
0.0064865 Eth
$1,699,387.00
72,890.739 LINK
0.6259%
27
KuCoin
LINK-USDT$23.71
0.0064672 Eth
$1,625,125.00
68,548.529 LINK
0.5886%
28
tanX
LINK-USDC$23.80
0.0064813 Eth
$1,184,870.00
50,683.830 LINK
0.4352%
29
PointPay
LINK-USDT$23.71
0.0064662 Eth
$1,146,536.00
49,056.818 LINK
0.4213%
30
Gemini
LINK-USD$23.77
0.0064842 Eth
$1,041,149.00
43,796.933 LINK
0.3761%
31
EXMO
LINK-USDT$23.71
0.0064674 Eth
$1,000,531.00
42,193.002 LINK
0.3623%
32
Coinbase Exchange
LINK-EUR$23.80
0.0064829 Eth
$960,709.00
40,367.230 LINK
0.3466%
33
WhiteBIT
LINK-BTC$23.74
0.0064687 Eth
$924,460.00
38,936.020 LINK
0.3344%
34
WhiteBIT
LINK-TRY$23.74
0.0064687 Eth
$881,105.00
37,110.220 LINK
0.3187%
35
Bybit
LINK-USDC$23.71
0.0064686 Eth
$818,899.00
35,021.926 LINK
0.3007%
36
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.75
0.0064758 Eth
$769,533.00
32,538.367 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2794%
37
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.75
0.0064771 Eth
$674,074.00
43,955.586 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3775%
38
Bitstamp
LINK-EUR$23.98
0.0065422 Eth
$660,452.00
27,536.130 LINK
0.2365%
39
Nonkyc.io
LINK-USDT$23.88
0.0065083 Eth
$623,197.00
26,664.916 LINK
0.2290%
40
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.76
0.0064818 Eth
$589,235.00
25,010.414 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.2148%
41
Bitbank
LINK-JPY$23.76
0.0064785 Eth
$570,266.00
24,003.018 LINK
0.2061%
42
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.73
0.0064692 Eth
$535,203.00
22,606.138 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1941%
43
EarnBIT
LINK-USDT$23.84
0.0064881 Eth
$520,931.00
22,270.667 LINK
0.1912%
44
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.71
0.0064669 Eth
$497,493.00
21,118.708 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1814%
45
Bitstamp
LINK-USD$23.73
0.0064727 Eth
$487,218.00
20,531.712 LINK
0.1763%
46
BigONE
LINK-USDT$23.68
0.0064594 Eth
$440,500.00
18,599.150 LINK
0.1597%
47
Bitbegin
LINK-USDT$23.75
0.0064820 Eth
$432,857.00
18,548.457 LINK
0.1593%
48
Coinbase Exchange
LINK-GBP$23.80
0.0064824 Eth
$394,704.00
16,586.110 LINK
0.1424%
49
HashKey Exchange
LINK-USD$23.73
0.0064718 Eth
$350,826.00
15,035.297 LINK
0.1291%
50
Coinbase Exchange
LINK-ETH$23.79
0.0064809 Eth
$334,812.00
14,072.490 LINK
0.1208%
51
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.74
0.0064707 Eth
$324,243.00
319,819.373 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.7464%
52
Coinbase Exchange
LINK-BTC$23.75
0.0064734 Eth
$294,159.00
12,383.080 LINK
0.1063%
53
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.90
0.0065165 Eth
$292,129.00
12,465.350 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1070%
54
Slex
LINK-ETH$23.81
0.0064914 Eth
$287,674.00
12,187.160 LINK
0.1047%
55
BitMart
LINK-BTC$23.71
0.0064673 Eth
$266,909.00
11,259.020 LINK
0.0967%
56
OKX
LINK-USDC$23.70
0.0064664 Eth
$261,183.00
11,183.229 LINK
0.0960%
57
GMO Japan
LINK-JPY$23.80
0.0064910 Eth
$252,996.00
10,632.300 LINK
0.0913%
58
Bitci TR
LINK-TRY$23.69
0.0064621 Eth
$240,237.00
10,267.950 LINK
0.0882%
59
Coinone
LINK-KRW$23.82
0.0064963 Eth
$183,535.00
7,706.166 LINK
0.0662%
60
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.88
0.0065111 Eth
$140,968.00
5,969.610 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0513%
61
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.72
0.0064697 Eth
$117,508.00
5,024.777 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0431%
62
LATOKEN
LINK-BTC$23.98
0.0065201 Eth
$117,193.00
4,886.368 LINK
0.0420%
63
Bitkub
LINK-THB$23.61
0.0064393 Eth
$105,748.00
4,479.788 LINK
0.0385%
64
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.79
0.0064852 Eth
$99,977.00
4,205.933 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0361%
65
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.80
0.0064879 Eth
$99,157.00
4,194.971 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0360%
66
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.73
0.0064692 Eth
$94,617.00
4,046.580 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0347%
67
BitMart
LINK-ETH$23.73
0.0064728 Eth
$86,718.00
3,654.900 LINK
0.0314%
68
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.75
0.0064735 Eth
$86,154.00
3,647.242 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0313%
69
Hotcoin
LINK-BTC$23.72
0.0064690 Eth
$85,055.00
3,585.740 LINK
0.0308%
70
Nonkyc.io
LINK-BTC$24.00
0.0065283 Eth
$77,200.00
3,277.948 LINK
0.0281%
71
Bitso
LINK-USD$23.80
0.0064856 Eth
$70,002.00
2,941.176 LINK
0.0253%
72
Gemini
LINK-BTC$23.70
0.0064654 Eth
$61,785.00
2,606.624 LINK
0.0224%
73
BTCMarkets
LINK-AUD$23.64
0.0064390 Eth
$58,713.00
2,483.861 LINK
0.0213%
74
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.87
0.0065062 Eth
$56,928.00
55,741.534 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.4787%
75
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.77
0.0064803 Eth
$54,610.00
2,316.809 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0199%
76
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$23.84
0.0064996 Eth
$37,343.00
47.392 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0004%
77
Bitexen
LINK-TRY$23.60
0.0064363 Eth
$32,687.00
1,385.265 LINK
0.0119%
78
CoinEx
LINK-USDC$23.88
0.0064920 Eth
$31,179.00
1,372.210 LINK
0.0118%
79
Hotcoin
LINK-ETH$23.74
0.0064758 Eth
$30,256.00
1,274.520 LINK
0.0109%
80
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$23.79
0.0064897 Eth
$27,497.00
1,214.791 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0104%
81
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$23.74
0.0064723 Eth
$23,333.00
998.397 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0086%
82
Korbit
LINK-KRW$23.76
0.0064815 Eth
$21,046.00
899.612 LINK
0.0077%
83
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$23.73
0.0064729 Eth
$18,042.34
772.253 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0066%
84
PancakeSwap V1 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.77
0.0064826 Eth
$16,074.35
761.172 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0065%
85
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.77
0.0064752 Eth
$14,800.03
627.132 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0054%
86
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$23.73
0.0064692 Eth
$13,771.58
588.630 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0051%
87
Dex-Trade
LINK-ETH$23.81
0.0064934 Eth
$13,369.36
561.530 LINK
0.0048%
88
KuCoin
LINK-KCS$23.68
0.0064597 Eth
$10,677.55
450.902 LINK
0.0039%
89
Biswap V3
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.88
0.0065107 Eth
$9,434.63
400.524 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0034%
90
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$23.59
0.0064322 Eth
$7,483.09
322.776 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0028%
91
Binance US
LINK-BTC$23.77
0.0064619 Eth
$6,998.70
294.453 LINK
0.0025%
92
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.95
0.0065285 Eth
$6,306.22
6,161.152 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.0529%
93
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.88
0.0065091 Eth
$6,162.18
6,024.892 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0517%
94
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.74
0.0064767 Eth
$3,696.49
156.528 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0013%
95
Uniswap V3 (Ethereum)
0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.76
0.0064743 Eth
$2,901.04
8.291 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9
0.0001%
96
CoinEx
LINK-BTC$23.83
0.0064935 Eth
$2,392.96
101.631 LINK
0.0009%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$23.85
0.0064973 Eth
$2,377.54
101.539 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0009%
98
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$23.73
0.0064723 Eth
$2,076.33
87.507 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0008%
99
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$23.85
0.0065047 Eth
$1,300.18
54.975 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0005%
100
Uniswap V3 (Optimism)
0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6$23.94
0.0065095 Eth
$890.92
871.232 0X0B2C639C533813F4AA9D7837CAF62653D097FF85
0.0075%

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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