ETH Price: $2,683.79 (-0.44%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

736,029 ( 0.039%)

Market

Price

$18.84 @ 0.007020 ETH (-0.55%)

Onchain Market Cap

$18,840,000,000.00

Circulating Supply Market Cap

$12,032,728,798.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
14.971690801737855314 LINK

Value
$282.07 ( ~0.105101281397461 Eth) [0.0000%]
0x6d8b9d75438da9a3142636dba3cc06241bf88e7c
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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 17027.27% |ETH 0.0003846 1725.27%

Market

Volume (24H):$365,954,228.00
Market Capitalization:$12,032,728,798.00
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
MEXC
LINK-USDT$18.75
0.0069993 Eth
$22,670,063.00
1,209,017.150 LINK
13.4363%
2
Bybit
LINK-USDT$18.76
0.0070028 Eth
$20,324,882.00
1,079,239.237 LINK
11.9941%
3
Coinbase Exchange
LINK-USD$18.73
0.0069865 Eth
$18,204,499.00
971,943.360 LINK
10.8016%
4
HTX
LINK-USDT$18.77
0.0070064 Eth
$15,882,089.00
841,608.881 LINK
9.3532%
5
P2B
LINK-USDT$18.79
0.0070089 Eth
$8,094,172.00
430,768.020 LINK
4.7873%
6
OKX
LINK-USDT$18.79
0.0070135 Eth
$5,348,172.00
284,261.357 LINK
3.1591%
7
BTSE
LINK-USDT$18.78
0.0070046 Eth
$4,240,557.00
225,819.462 LINK
2.5096%
8
Gate.io
LINK-USDT$18.73
0.0069927 Eth
$4,015,998.00
213,178.880 LINK
2.3692%
9
XT.COM
LINK-USDT$18.76
0.0070024 Eth
$3,957,631.00
209,934.390 LINK
2.3331%
10
WhiteBIT
LINK-USDT$18.78
0.0070084 Eth
$3,651,922.00
194,461.880 LINK
2.1611%
11
Coinstore
LINK-USDT$18.69
0.0069740 Eth
$3,508,166.00
186,209.790 LINK
2.0694%
12
Kraken
LINK-USD$18.71
0.0069855 Eth
$3,420,099.00
182,758.422 LINK
2.0311%
13
KuCoin
LINK-USDT$18.77
0.0070035 Eth
$3,382,904.00
180,261.691 LINK
2.0033%
14
CoinW
LINK-USDT$18.74
0.0069944 Eth
$2,986,443.00
159,349.560 LINK
1.7709%
15
Hotcoin
LINK-USDT$18.74
0.0069954 Eth
$2,636,355.00
140,683.720 LINK
1.5635%
16
Bitunix
LINK-USDT$18.74
0.0069939 Eth
$2,626,544.00
140,224.060 LINK
1.5584%
17
Azbit
LINK-USDT$18.82
0.0070065 Eth
$2,360,053.00
125,157.336 LINK
1.3909%
18
BYDFi
LINK-USDT$18.80
0.0069998 Eth
$2,182,330.00
116,080.480 LINK
1.2901%
19
LATOKEN
LINK-USDT$18.72
0.0069867 Eth
$1,945,673.00
103,930.394 LINK
1.1550%
20
FMCPAY
LINK-USDT$18.87
0.0070173 Eth
$1,892,546.00
100,493.293 LINK
1.1168%
21
QMall
LINK-USDT$18.72
0.0069867 Eth
$1,596,352.00
84,675.691 LINK
0.9410%
22
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.77
0.0070032 Eth
$1,593,016.00
84,589.447 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.9401%
23
Bitvavo
LINK-EUR$18.75
0.0069992 Eth
$1,497,425.00
79,875.554 LINK
0.8877%
24
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.87
0.0070444 Eth
$1,476,601.00
78,324.963 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.8705%
25
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.75
0.0070011 Eth
$1,293,415.00
68,545.067 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.7618%
26
Dex-Trade
LINK-USDT$18.78
0.0070052 Eth
$1,280,179.00
68,166.820 LINK
0.7576%
27
Biconomy.com
LINK-USDT$18.70
0.0069779 Eth
$1,249,245.00
66,251.360 LINK
0.7363%
28
Coinbase Exchange
LINK-EUR$18.73
0.0069911 Eth
$1,208,947.00
64,550.780 LINK
0.7174%
29
FMCPAY
LINK-ETH$18.75
0.0070005 Eth
$1,189,829.00
63,096.960 LINK
0.7012%
30
FMCPAY
LINK-BTC$18.78
0.0070067 Eth
$960,925.00
51,339.100 LINK
0.5706%
31
CoinEx
LINK-USDT$18.74
0.0069941 Eth
$955,177.00
50,606.702 LINK
0.5624%
32
tanX
LINK-USDC$18.72
0.0069864 Eth
$749,114.00
39,752.800 LINK
0.4418%
33
Coinbase Exchange
LINK-GBP$18.71
0.0069854 Eth
$744,557.00
39,788.030 LINK
0.4422%
34
PointPay
LINK-USDT$18.78
0.0070110 Eth
$629,823.00
33,397.161 LINK
0.3712%
35
Bitbank
LINK-JPY$18.82
0.0070249 Eth
$585,413.00
31,107.481 LINK
0.3457%
36
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.73
0.0069931 Eth
$513,262.00
27,239.741 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.3027%
37
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$18.73
0.0069931 Eth
$474,144.00
25,180.421 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2798%
38
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$18.73
0.0069908 Eth
$448,338.00
450,553.646 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
5.0072%
39
WhiteBIT
LINK-BTC$18.76
0.0069999 Eth
$410,824.00
21,895.270 LINK
0.2433%
40
BigONE
LINK-USDT$18.77
0.0070071 Eth
$385,388.00
20,531.050 LINK
0.2282%
41
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.72
0.0069899 Eth
$339,133.00
18,017.846 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2002%
42
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.73
0.0069926 Eth
$330,806.00
17,579.709 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1954%
43
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$18.75
0.0070010 Eth
$320,025.00
17,197.452 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1911%
44
Binance
LINK-TRY$18.83
0.0070244 Eth
$305,087.00
16,092.580 LINK
0.1788%
45
LATOKEN
LINK-BTC$18.72
0.0069899 Eth
$304,253.00
16,249.063 LINK
0.1806%
46
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$18.85
0.0070362 Eth
$301,334.00
31,071.996 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3453%
47
EXMO
LINK-USDT$18.72
0.0069893 Eth
$268,433.00
14,336.517 LINK
0.1593%
48
BitMart
LINK-BTC$18.76
0.0070024 Eth
$258,710.00
13,792.080 LINK
0.1533%
49
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$18.76
0.0070025 Eth
$241,183.00
12,790.032 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1421%
50
QMall
LINK-USDC$18.71
0.0069822 Eth
$231,199.00
12,259.525 LINK
0.1362%
51
Bitci TR
LINK-TRY$18.89
0.0070459 Eth
$197,028.00
10,376.910 LINK
0.1153%
52
Gemini
LINK-USD$18.78
0.0070085 Eth
$194,716.00
10,368.258 LINK
0.1152%
53
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$18.74
0.0069939 Eth
$181,016.00
9,614.542 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.1069%
54
CoinTR
LINK-TRY$18.81
0.0070203 Eth
$123,764.00
6,521.230 LINK
0.0725%
55
GMO Japan
LINK-JPY$18.69
0.0069713 Eth
$115,788.00
6,196.400 LINK
0.0689%
56
OKX
LINK-USDC$18.76
0.0070009 Eth
$97,954.00
5,213.092 LINK
0.0579%
57
Hotcoin
LINK-BTC$18.75
0.0069924 Eth
$92,440.00
4,931.270 LINK
0.0548%
58
Uniswap V4 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$18.75
0.0069994 Eth
$90,230.00
90,576.895 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.0066%
59
BYDFi
LINK-USDC$18.78
0.0070089 Eth
$85,413.00
4,547.820 LINK
0.0505%
60
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.76
0.0070025 Eth
$77,214.00
77,528.326 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.8616%
61
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$18.84
0.0070308 Eth
$75,712.00
4,022.854 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0447%
62
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$18.74
0.0069939 Eth
$70,452.00
3,763.732 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0418%
63
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.74
0.0069936 Eth
$70,300.00
3,733.006 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0415%
64
Binance US
LINK-USDT$18.75
0.0069986 Eth
$55,757.00
2,973.382 LINK
0.0330%
65
KuCoin
LINK-USDC$18.73
0.0069899 Eth
$53,264.00
2,843.780 LINK
0.0316%
66
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.82
0.0070236 Eth
$46,679.00
2,485.089 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0276%
67
Bitexen
LINK-TRY$18.81
0.0069997 Eth
$39,670.00
2,109.462 LINK
0.0234%
68
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$18.76
0.0070026 Eth
$33,106.00
1,757.953 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0195%
69
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$18.73
0.0069931 Eth
$23,610.00
1,267.169 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0141%
70
Hotcoin
LINK-ETH$18.74
0.0069946 Eth
$23,035.00
1,229.270 LINK
0.0137%
71
EXMO
LINK-BTC$19.02
0.0070995 Eth
$22,556.00
1,185.999 LINK
0.0132%
72
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$18.77
0.0070079 Eth
$20,270.00
27.781 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0003%
73
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.81
0.0070208 Eth
$18,850.29
1,001.262 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0111%
74
Mercado Bitcoin
LINK-BRL$18.93
0.0070653 Eth
$18,211.78
962.021 LINK
0.0107%
75
Uniswap V3 (BSC)
0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$18.94
0.0070706 Eth
$17,736.88
2,030.950 0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63
0.0226%
76
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$18.77
0.0070068 Eth
$17,347.78
17,398.925 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.1934%
77
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$18.74
0.0069941 Eth
$16,698.34
886.853 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0099%
78
Uniswap V4 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$18.76
0.0070011 Eth
$11,541.53
613.559 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0068%
79
Dex-Trade
LINK-ETH$18.74
0.0069962 Eth
$10,683.21
570.010 LINK
0.0063%
80
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$18.77
0.0070060 Eth
$8,895.46
473.282 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0053%
81
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$18.74
0.0069972 Eth
$8,394.50
448.092 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0050%
82
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.73
0.0069911 Eth
$8,253.42
32.629 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0004%
83
Biswap V3
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.74
0.0069968 Eth
$7,826.75
416.848 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0046%
84
Uniswap V4 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.85
0.0070300 Eth
$7,419.84
393.548 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0044%
85
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.78
0.0070114 Eth
$6,976.48
372.076 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0041%
86
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD93F7E271CB87C23AAA73EDC008A79646D1F9912$18.91
0.0070587 Eth
$6,907.86
375.122 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0042%
87
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.79
0.0070141 Eth
$6,304.46
334.174 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0037%
88
Uniswap V3 (Ethereum)
0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA$18.85
0.0070372 Eth
$5,391.90
21.013 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9
0.0002%
89
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.86
0.0070377 Eth
$4,623.05
244.716 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0027%
90
Uniswap V4 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.90
0.0070536 Eth
$4,174.35
220.918 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0025%
91
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$18.70
0.0069757 Eth
$4,154.34
219.923 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0024%
92
CoinEx
LINK-BTC$18.80
0.0070164 Eth
$3,664.72
196.182 LINK
0.0022%
93
CoinEx
LINK-USDC$18.79
0.0070149 Eth
$3,429.67
181.837 LINK
0.0020%
94
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.77
0.0070050 Eth
$2,747.22
2,756.236 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0306%
95
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XD036414FA2BCBB802691491E323BFF1348C5F4BA$18.71
0.0069838 Eth
$2,706.22
138.896 0X5947BB275C521040051D82396192181B413227A3
0.0015%
96
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.77
0.0070074 Eth
$1,849.03
98.633 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0011%
97
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$18.77
0.0070074 Eth
$1,627.34
85.809 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0010%
98
KuCoin
LINK-KCS$18.76
0.0070003 Eth
$1,094.33
58.339 LINK
0.0006%
99
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$18.84
0.0070316 Eth
$813.74
43.183 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0005%
100
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$19.09
0.0071244 Eth
$584.82
31.094 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
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

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"data","type":"bytes"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]

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Deployed Bytecode

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Swarm Source

bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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