ETH Price: $3,310.22 (-0.73%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

730,511 ( 0.022%)

Market

Price

$25.27 @ 0.007634 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
1.5214193 LINK

Value
$38.45 ( ~0.0116155468797883 Eth) [0.0000%]
0x77f7e9aeee129dcc88318eb2e1d12777b04b3db2
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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 1884.92%

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
Coinbase Exchange
LINK-USD$25.28
0.0076385 Eth
$32,516,119.00
1,286,238.880 LINK
13.2958%
2
Bybit
LINK-USDT$25.28
0.0076392 Eth
$25,614,883.00
1,012,549.489 LINK
10.4667%
3
Slex
LINK-USDT$25.26
0.0076352 Eth
$25,314,220.00
1,001,690.150 LINK
10.3544%
4
P2B
LINK-USDT$25.30
0.0076424 Eth
$14,207,871.00
561,654.620 LINK
5.8058%
5
HTX
LINK-USDT$25.28
0.0076383 Eth
$13,181,300.00
521,601.795 LINK
5.3918%
6
OKX
LINK-USDT$25.27
0.0076354 Eth
$11,325,307.00
447,512.137 LINK
4.6259%
7
DigiFinex
LINK-USDT$25.27
0.0076363 Eth
$8,673,197.00
343,192.150 LINK
3.5476%
8
Deepcoin
LINK-USDT$25.29
0.0076505 Eth
$7,948,721.00
322,582.320 LINK
3.3345%
9
KuCoin
LINK-USDT$25.22
0.0076246 Eth
$6,607,061.00
261,927.102 LINK
2.7075%
10
XT.COM
LINK-USDT$25.27
0.0076348 Eth
$6,585,437.00
260,559.310 LINK
2.6934%
11
Azbit
LINK-USDT$25.29
0.0076401 Eth
$6,533,089.00
258,544.518 LINK
2.6726%
12
Coinstore
LINK-USDT$25.30
0.0076445 Eth
$6,090,685.00
241,031.000 LINK
2.4915%
13
Bitunix
LINK-USDT$25.29
0.0076409 Eth
$5,535,206.00
218,813.500 LINK
2.2619%
14
BTSE
LINK-USDT$25.28
0.0076400 Eth
$4,182,301.00
165,409.145 LINK
1.7098%
15
CoinW
LINK-USDT$25.28
0.0076375 Eth
$4,059,152.00
160,588.640 LINK
1.6600%
16
BYDFi
LINK-USDT$25.28
0.0076379 Eth
$3,675,012.00
145,391.540 LINK
1.5029%
17
Coinbase Exchange
LINK-EUR$25.23
0.0076274 Eth
$3,290,168.00
130,394.650 LINK
1.3479%
18
LATOKEN
LINK-USDT$25.27
0.0076348 Eth
$3,139,697.00
124,258.804 LINK
1.2845%
19
FMCPAY
LINK-USDT$25.29
0.0076398 Eth
$3,101,908.00
122,624.136 LINK
1.2676%
20
Kraken
LINK-USD$25.28
0.0076401 Eth
$3,009,444.00
119,062.886 LINK
1.2308%
21
QMall
LINK-USDT$25.26
0.0076437 Eth
$2,710,255.00
107,230.535 LINK
1.1084%
22
Bitvavo
LINK-EUR$25.32
0.0076498 Eth
$2,597,310.00
102,581.418 LINK
1.0604%
23
Hotcoin
LINK-USDT$25.28
0.0076411 Eth
$2,291,883.00
90,647.820 LINK
0.9370%
24
Dex-Trade
LINK-USDT$25.29
0.0076520 Eth
$2,140,575.00
84,655.704 LINK
0.8751%
25
Bitstamp
LINK-USD$25.25
0.0076296 Eth
$2,108,674.00
83,511.855 LINK
0.8633%
26
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.20
0.0076137 Eth
$1,682,574.00
67,035.450 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.6929%
27
FMCPAY
LINK-ETH$25.28
0.0076373 Eth
$1,677,051.00
66,715.040 LINK
0.6896%
28
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.21
0.0076184 Eth
$1,525,870.00
61,016.821 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.6307%
29
Bitstamp
LINK-EUR$25.25
0.0076306 Eth
$1,425,560.00
56,450.292 LINK
0.5835%
30
FMCPAY
LINK-BTC$25.24
0.0076344 Eth
$1,418,596.00
56,077.400 LINK
0.5797%
31
CoinEx
LINK-USDT$25.28
0.0076392 Eth
$1,308,493.00
51,594.783 LINK
0.5333%
32
Coinbase Exchange
LINK-GBP$25.24
0.0076291 Eth
$1,256,902.00
49,790.780 LINK
0.5147%
33
OKX
LINK-USDC$25.26
0.0076327 Eth
$1,193,444.00
46,892.796 LINK
0.4847%
34
tanX
LINK-USDC$25.31
0.0076456 Eth
$1,087,297.00
42,944.940 LINK
0.4439%
35
PointPay
LINK-USDT$25.30
0.0076439 Eth
$962,303.00
38,060.786 LINK
0.3934%
36
Azbit
LINK-ETH$25.28
0.0076383 Eth
$900,455.00
35,848.306 LINK
0.3706%
37
Trubit
LINK-USDT$25.25
0.0076422 Eth
$892,397.00
35,341.310 LINK
0.3653%
38
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.30
0.0076462 Eth
$805,633.00
31,951.618 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.3303%
39
WhiteBIT
LINK-TRY$25.38
0.0076688 Eth
$751,620.00
29,614.920 LINK
0.3061%
40
EXMO
LINK-USDT$25.25
0.0076333 Eth
$741,747.00
29,372.027 LINK
0.3036%
41
Phemex
LINK-USDT$25.29
0.0076417 Eth
$681,476.00
26,941.420 LINK
0.2785%
42
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$25.20
0.0076137 Eth
$523,210.00
20,828.627 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2153%
43
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$25.28
0.0076386 Eth
$514,640.00
20,361.101 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2105%
44
WhiteBIT
LINK-BTC$25.32
0.0076503 Eth
$476,455.00
18,816.960 LINK
0.1945%
45
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.28
0.0076422 Eth
$458,598.00
18,152.700 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1876%
46
Coinbase Exchange
LINK-USDT$25.24
0.0076291 Eth
$454,809.00
18,021.035 LINK
0.1863%
47
Bitbank
LINK-JPY$25.28
0.0076367 Eth
$437,258.00
17,299.628 LINK
0.1788%
48
Gemini
LINK-USD$25.24
0.0076271 Eth
$381,647.00
15,119.620 LINK
0.1563%
49
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.22
0.0076205 Eth
$376,356.00
14,961.251 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1547%
50
BigONE
LINK-USDT$25.28
0.0076355 Eth
$373,275.00
14,767.360 LINK
0.1526%
51
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.29
0.0076406 Eth
$347,669.00
13,828.147 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1429%
52
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$25.31
0.0076489 Eth
$325,451.00
324,693.655 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
3.3564%
53
BitMart
LINK-BTC$25.27
0.0076359 Eth
$301,949.00
11,948.540 LINK
0.1235%
54
QMall
LINK-USDC$25.25
0.0076290 Eth
$291,071.00
11,481.627 LINK
0.1187%
55
LATOKEN
LINK-BTC$25.28
0.0076376 Eth
$275,776.00
10,909.487 LINK
0.1128%
56
Slex
LINK-ETH$25.28
0.0076389 Eth
$261,772.00
10,425.010 LINK
0.1078%
57
Coinbase Exchange
LINK-BTC$25.26
0.0076345 Eth
$261,471.00
10,352.190 LINK
0.1070%
58
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$25.31
0.0076470 Eth
$225,164.00
8,913.745 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0921%
59
BitStorage
LINK-ETH$25.29
0.0076421 Eth
$220,523.00
8,718.590 LINK
0.0901%
60
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$25.31
0.0076473 Eth
$186,997.00
7,395.895 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0765%
61
GMO Japan
LINK-JPY$25.30
0.0076467 Eth
$168,399.00
6,655.600 LINK
0.0688%
62
Bitso
LINK-USD$25.28
0.0076414 Eth
$151,428.00
5,989.015 LINK
0.0619%
63
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$25.26
0.0076364 Eth
$106,129.00
4,193.067 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0433%
64
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$25.23
0.0076279 Eth
$96,532.00
3,840.142 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0397%
65
BitMart
LINK-ETH$25.28
0.0076373 Eth
$96,013.00
3,798.660 LINK
0.0393%
66
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$25.29
0.0076412 Eth
$94,842.00
94,625.880 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.9781%
67
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$25.20
0.0076173 Eth
$86,051.00
3,418.740 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0353%
68
Hotcoin
LINK-BTC$25.30
0.0076442 Eth
$80,176.00
3,169.130 LINK
0.0328%
69
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$25.15
0.0075999 Eth
$64,264.00
2,549.248 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0264%
70
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$25.28
0.0076414 Eth
$50,394.00
50,372.821 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.5207%
71
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$25.30
0.0076462 Eth
$41,618.00
1,646.546 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0170%
72
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$25.05
0.0075707 Eth
$33,199.00
1,288.201 0X5947BB275C521040051D82396192181B413227A3
0.0133%
73
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$25.30
0.0076462 Eth
$31,322.00
1,234.038 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0128%
74
Dex-Trade
LINK-ETH$25.28
0.0076399 Eth
$27,869.00
1,102.430 LINK
0.0114%
75
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$25.26
0.0076357 Eth
$24,679.00
971.155 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0100%
76
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$25.15
0.0076007 Eth
$23,336.00
923.135 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0095%
77
Hotcoin
LINK-ETH$25.25
0.0076403 Eth
$23,333.00
924.040 LINK
0.0096%
78
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$25.16
0.0076059 Eth
$21,587.00
839.700 0X5947BB275C521040051D82396192181B413227A3
0.0087%
79
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$25.32
0.0076510 Eth
$20,543.00
27.297 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0003%
80
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$25.23
0.0076255 Eth
$19,125.79
755.561 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0078%
81
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$25.17
0.0076092 Eth
$16,599.94
655.702 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0068%
82
Pangolin
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$25.25
0.0076327 Eth
$16,522.49
642.710 0X5947BB275C521040051D82396192181B413227A3
0.0066%
83
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.20
0.0076138 Eth
$11,739.74
469.656 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0049%
84
Gemini
LINK-BTC$25.18
0.0076074 Eth
$11,681.68
463.992 LINK
0.0048%
85
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$25.26
0.0076350 Eth
$9,962.31
30.031 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0003%
86
Biswap V3
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.31
0.0076508 Eth
$8,301.00
330.027 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0034%
87
Bitexen
LINK-TRY$25.09
0.0075820 Eth
$5,770.06
229.973 LINK
0.0024%
88
CoinEx
LINK-USDC$25.31
0.0076486 Eth
$5,707.69
225.876 LINK
0.0023%
89
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$25.29
0.0076394 Eth
$5,145.52
205.701 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0021%
90
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$25.20
0.0076159 Eth
$4,733.40
4,737.454 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0490%
91
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.19
0.0076108 Eth
$3,406.68
135.942 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0014%
92
Ace
LINK-USDT$25.33
0.0076527 Eth
$2,742.47
108.560 LINK
0.0011%
93
CoinEx
LINK-BTC$25.25
0.0076281 Eth
$2,735.65
108.168 LINK
0.0011%
94
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$25.23
0.0076245 Eth
$2,339.11
93.124 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0010%
95
Lydia Finance
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$25.18
0.0076065 Eth
$2,166.89
84.079 0X5947BB275C521040051D82396192181B413227A3
0.0009%
96
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.15
0.0076012 Eth
$1,921.83
76.179 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0008%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC3C7D422809852031B44AB29EEC9F1EFF2A58756$25.28
0.0076346 Eth
$1,540.22
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98
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$25.15
0.0075974 Eth
$1,385.38
54.624 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0006%
99
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$25.31
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$1,103.78
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0.0005%
100
Retro
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0.0076183 Eth
$795.57
31.696 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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