ETH Price: $2,661.87 (+1.59%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

732,816 ( -0.032%)

Market

Price

$18.68 @ 0.007018 ETH (+3.27%)

Onchain Market Cap

$18,680,000,000.00

Circulating Supply Market Cap

$11,911,752,571.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
3.64864 LINK

Value
$68.16 ( ~0.0256060939303975 Eth) [0.0000%]
0x65BEBa49e09e4352f6B9Da04eb4F255231175003
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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 16881.82% |ETH 0.0003846 1724.75%

Market

Volume (24H):$405,621,224.00
Market Capitalization:$11,911,752,571.00
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$18.73
0.0070208 Eth
$51,812,116.00
0.000 LINK
0.0000%
2
Binance
LINK-USDT$18.66
0.0069909 Eth
$48,895,241.00
2,680,716.000 LINK
21.9119%
3
Bybit
LINK-USDT$18.69
0.0070234 Eth
$23,968,121.00
1,312,350.880 LINK
10.7270%
4
Coinbase Exchange
LINK-USD$18.69
0.0070232 Eth
$21,509,467.00
1,150,792.730 LINK
9.4064%
5
HTX
LINK-USDT$18.73
0.0070364 Eth
$17,208,449.00
945,007.596 LINK
7.7244%
6
P2B
LINK-USDT$18.67
0.0070171 Eth
$10,324,819.00
552,895.170 LINK
4.5193%
7
BVOX
LINK-USDT$18.69
0.0070202 Eth
$7,238,511.00
397,225.260 LINK
3.2469%
8
Gate.io
LINK-USDT$18.68
0.0070174 Eth
$6,242,534.00
341,639.600 LINK
2.7925%
9
DigiFinex
LINK-USDT$18.69
0.0070246 Eth
$6,126,720.00
327,725.950 LINK
2.6788%
10
MEXC
LINK-USDT$18.72
0.0070206 Eth
$5,707,242.00
304,839.730 LINK
2.4917%
11
OKX
LINK-USDT$18.71
0.0070302 Eth
$5,482,863.00
299,670.265 LINK
2.4495%
12
XT.COM
LINK-USDT$18.67
0.0070028 Eth
$4,868,171.00
266,826.000 LINK
2.1810%
13
FameEX
LINK-USDT$18.68
0.0070185 Eth
$4,857,153.00
266,136.006 LINK
2.1754%
14
Binance
LINK-USDC$18.69
0.0070218 Eth
$4,562,992.00
250,794.070 LINK
2.0500%
15
KuCoin
LINK-USDT$18.70
0.0070256 Eth
$4,273,915.00
228,582.200 LINK
1.8684%
16
Coinstore
LINK-USDT$18.69
0.0070138 Eth
$4,227,163.00
231,871.320 LINK
1.8953%
17
BTSE
LINK-USDT$18.67
0.0070144 Eth
$4,014,011.00
215,023.309 LINK
1.7576%
18
Bitunix
LINK-USDT$18.68
0.0070089 Eth
$3,548,943.00
189,995.490 LINK
1.5530%
19
CoinW
LINK-USDT$18.70
0.0070260 Eth
$3,524,377.00
188,485.510 LINK
1.5407%
20
Azbit
LINK-USDT$18.68
0.0069998 Eth
$2,886,252.00
158,292.734 LINK
1.2939%
21
BYDFi
LINK-USDT$18.69
0.0070014 Eth
$2,812,667.00
150,468.850 LINK
1.2299%
22
Hotcoin
LINK-USDT$18.70
0.0070283 Eth
$2,561,268.00
136,936.150 LINK
1.1193%
23
QMall
LINK-USDT$18.67
0.0070124 Eth
$1,956,725.00
107,287.414 LINK
0.8770%
24
Coinbase Exchange
LINK-EUR$18.69
0.0070240 Eth
$1,889,206.00
101,061.270 LINK
0.8261%
25
FMCPAY
LINK-USDT$18.65
0.0069965 Eth
$1,672,661.00
91,627.572 LINK
0.7490%
26
Dex-Trade
LINK-USDT$18.69
0.0070242 Eth
$1,608,170.00
86,023.240 LINK
0.7031%
27
Bitvavo
LINK-EUR$18.75
0.0070414 Eth
$1,556,481.00
83,014.760 LINK
0.6786%
28
Biconomy.com
LINK-USDT$18.69
0.0070008 Eth
$1,286,670.00
70,540.880 LINK
0.5766%
29
FMCPAY
LINK-ETH$18.69
0.0070211 Eth
$1,142,418.00
61,862.080 LINK
0.5057%
30
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.61
0.0069920 Eth
$1,074,635.00
58,087.512 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.4748%
31
FMCPAY
LINK-BTC$18.73
0.0070217 Eth
$934,625.00
50,795.700 LINK
0.4152%
32
CoinEx
LINK-USDT$18.69
0.0070206 Eth
$873,782.00
48,021.525 LINK
0.3925%
33
tanX
LINK-USDC$18.69
0.0070196 Eth
$838,448.00
46,116.470 LINK
0.3770%
34
PointPay
LINK-USDT$18.69
0.0070242 Eth
$742,424.00
40,645.952 LINK
0.3322%
35
Trubit
LINK-USDT$18.71
0.0070159 Eth
$741,488.00
40,583.310 LINK
0.3317%
36
Coinbase Exchange
LINK-GBP$18.73
0.0070359 Eth
$652,435.00
34,837.850 LINK
0.2848%
37
Bitbank
LINK-JPY$18.73
0.0070375 Eth
$651,284.00
34,775.285 LINK
0.2842%
38
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.68
0.0070210 Eth
$592,712.00
31,980.829 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2614%
39
Phemex
LINK-USDT$18.63
0.0069869 Eth
$510,577.00
27,401.420 LINK
0.2240%
40
EXMO
LINK-USDT$18.70
0.0070244 Eth
$509,518.00
27,254.075 LINK
0.2228%
41
Binance
LINK-TRY$18.84
0.0070620 Eth
$422,476.00
22,975.120 LINK
0.1878%
42
Gemini
LINK-USD$18.76
0.0070477 Eth
$378,312.00
20,170.037 LINK
0.1649%
43
QMall
LINK-USDC$18.69
0.0070229 Eth
$367,515.00
20,189.103 LINK
0.1650%
44
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$18.62
0.0069979 Eth
$348,216.00
37,795.828 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3089%
45
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.74
0.0070411 Eth
$346,191.00
18,562.261 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1517%
46
BigONE
LINK-USDT$18.61
0.0069930 Eth
$321,400.00
17,270.130 LINK
0.1412%
47
Slex
LINK-ETH$18.73
0.0070222 Eth
$310,995.00
16,807.060 LINK
0.1374%
48
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$18.72
0.0070353 Eth
$295,716.00
15,781.365 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1290%
49
OKX
LINK-USDC$18.71
0.0070322 Eth
$281,272.00
15,439.540 LINK
0.1262%
50
BitMart
LINK-BTC$18.70
0.0070248 Eth
$271,716.00
14,531.720 LINK
0.1188%
51
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.72
0.0070326 Eth
$250,677.00
13,522.180 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1105%
52
Coinbase Exchange
LINK-ETH$18.71
0.0070295 Eth
$250,531.00
13,391.890 LINK
0.1095%
53
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$18.63
0.0069988 Eth
$217,888.00
214,030.348 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.7495%
54
BitDelta
LINK-USDT$18.67
0.0070167 Eth
$198,746.00
10,900.000 LINK
0.0891%
55
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.71
0.0070290 Eth
$170,345.00
9,188.214 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0751%
56
CoinTR
LINK-TRY$18.87
0.0070912 Eth
$157,942.00
8,588.890 LINK
0.0702%
57
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$18.60
0.0069907 Eth
$141,219.00
7,762.153 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0634%
58
Bybit
LINK-USDC$18.69
0.0070224 Eth
$113,946.00
6,206.686 LINK
0.0507%
59
Bitkub
LINK-THB$18.71
0.0070166 Eth
$101,723.00
5,436.413 LINK
0.0444%
60
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$18.67
0.0070149 Eth
$97,092.00
5,323.646 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0435%
61
KuCoin
LINK-USDC$18.69
0.0070214 Eth
$95,015.00
5,084.729 LINK
0.0416%
62
Hotcoin
LINK-BTC$18.72
0.0070350 Eth
$87,354.00
4,665.750 LINK
0.0381%
63
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.79
0.0070590 Eth
$78,980.00
4,290.625 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0351%
64
BYDFi
LINK-USDC$18.75
0.0070220 Eth
$77,880.00
4,154.380 LINK
0.0340%
65
BitMart
LINK-ETH$18.69
0.0070217 Eth
$68,492.00
3,665.240 LINK
0.0300%
66
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$18.78
0.0070551 Eth
$68,383.00
3,661.735 0X5947BB275C521040051D82396192181B413227A3
0.0299%
67
Uniswap V4 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$18.66
0.0069948 Eth
$64,842.00
3,581.055 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0293%
68
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$18.63
0.0070002 Eth
$59,017.00
3,210.964 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0262%
69
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.61
0.0069920 Eth
$44,984.00
44,136.748 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3608%
70
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$18.62
0.0069970 Eth
$36,626.00
1,973.359 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0161%
71
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$18.70
0.0070280 Eth
$31,794.00
1,718.465 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0140%
72
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$18.68
0.0070208 Eth
$22,848.00
1,248.527 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0102%
73
Hotcoin
LINK-ETH$18.69
0.0070220 Eth
$21,642.00
1,157.660 LINK
0.0095%
74
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$18.67
0.0070171 Eth
$20,840.00
30.984 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0003%
75
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$18.76
0.0070510 Eth
$19,426.81
1,036.960 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0085%
76
Bitexen
LINK-TRY$18.67
0.0070002 Eth
$18,473.00
989.375 LINK
0.0081%
77
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$18.74
0.0070428 Eth
$17,093.13
917.673 0X5947BB275C521040051D82396192181B413227A3
0.0075%
78
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.69
0.0070210 Eth
$14,689.48
60.187 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0005%
79
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.74
0.0070361 Eth
$13,416.58
701.565 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0057%
80
Dex-Trade
LINK-ETH$18.71
0.0070281 Eth
$12,670.05
677.360 LINK
0.0055%
81
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$18.71
0.0070254 Eth
$11,327.55
611.818 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0050%
82
Pangolin
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$18.66
0.0070125 Eth
$10,678.04
574.184 0X5947BB275C521040051D82396192181B413227A3
0.0047%
83
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$18.76
0.0070477 Eth
$9,938.34
541.282 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0044%
84
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$18.66
0.0070131 Eth
$8,871.54
484.428 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0040%
85
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$18.65
0.0070027 Eth
$8,783.08
8,621.248 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.0705%
86
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$18.66
0.0070126 Eth
$7,414.13
402.294 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0033%
87
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD93F7E271CB87C23AAA73EDC008A79646D1F9912$18.74
0.0070412 Eth
$5,283.73
276.622 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0023%
88
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$18.57
0.0069648 Eth
$3,717.16
197.724 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0016%
89
CoinEx
LINK-BTC$18.75
0.0070430 Eth
$3,274.01
176.691 LINK
0.0014%
90
CoinEx
LINK-USDC$18.65
0.0070035 Eth
$3,221.36
177.332 LINK
0.0014%
91
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.65
0.0070056 Eth
$2,583.30
140.084 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0011%
92
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.68
0.0070035 Eth
$2,403.92
2,341.471 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0191%
93
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.73
0.0070336 Eth
$2,242.73
120.418 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0010%
94
Lydia Finance
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$18.76
0.0070385 Eth
$1,713.80
92.212 0X5947BB275C521040051D82396192181B413227A3
0.0008%
95
Biswap
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.70
0.0070171 Eth
$1,501.52
84.134 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0007%
96
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.66
0.0070136 Eth
$1,435.32
77.489 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0006%
97
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$18.73
0.0070227 Eth
$914.50
49.924 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0004%
98
KuCoin
LINK-KCS$18.68
0.0070203 Eth
$750.83
40.187 LINK
0.0003%
99
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$18.62
0.0069978 Eth
$597.54
32.109 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0003%
100
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XB33EAAD8D922B1083446DC23F610C2567FB5180F$18.68
0.0070186 Eth
$404.99
21.719 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0002%

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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