ETH Price: $2,642.79 (+2.27%)
Gas: 0.92 Gwei

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

732,942 ( -0.043%)

Market

Price

$18.31 @ 0.006928 ETH (+1.44%)

Onchain Market Cap

$18,310,000,000.00

Circulating Supply Market Cap

$11,681,404,490.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0.78289288 LINK

Value
$14.33 ( ~0.00542229618082255 Eth) [0.0000%]
0x4b576d7a97bae49cd0ff47cc2228bec43ed6931a
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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 16545.45% |ETH 0.0003846 1701.35%

Market

Volume (24H):$414,115,614.00
Market Capitalization:$11,681,404,490.00
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
Bybit
LINK-USDT$18.28
0.0069220 Eth
$22,687,386.00
1,249,429.690 LINK
14.3862%
2
Coinbase Exchange
LINK-USD$18.28
0.0069243 Eth
$20,270,487.00
1,108,828.140 LINK
12.7673%
3
HTX
LINK-USDT$18.30
0.0069312 Eth
$19,025,751.00
1,047,599.895 LINK
12.0623%
4
P2B
LINK-USDT$18.28
0.0069302 Eth
$9,940,407.00
543,745.250 LINK
6.2608%
5
Gate.io
LINK-USDT$18.27
0.0069214 Eth
$6,674,854.00
368,740.220 LINK
4.2458%
6
OKX
LINK-USDT$18.28
0.0069229 Eth
$5,713,236.00
314,555.507 LINK
3.6219%
7
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$18.26
0.0069183 Eth
$5,707,364.00
311,850.311 0X514910771AF9CA656AF840DFF83E8264ECF986CA
3.5907%
8
XT.COM
LINK-USDT$18.27
0.0069298 Eth
$4,767,933.00
263,032.830 LINK
3.0286%
9
Binance
LINK-USDC$18.29
0.0069291 Eth
$4,738,622.00
261,615.360 LINK
3.0123%
10
BTSE
LINK-USDT$18.28
0.0069272 Eth
$4,641,168.00
253,917.052 LINK
2.9237%
11
Coinstore
LINK-USDT$18.24
0.0069150 Eth
$4,401,592.00
242,942.750 LINK
2.7973%
12
KuCoin
LINK-USDT$18.28
0.0069221 Eth
$3,620,179.00
198,081.465 LINK
2.2808%
13
Binance
LINK-FDUSD$18.33
0.0069535 Eth
$3,607,780.00
198,939.090 LINK
2.2906%
14
CoinW
LINK-USDT$18.32
0.0069419 Eth
$3,600,273.00
196,478.000 LINK
2.2623%
15
Bitunix
LINK-USDT$18.28
0.0069231 Eth
$3,397,916.00
185,944.520 LINK
2.1410%
16
BYDFi
LINK-USDT$18.26
0.0069263 Eth
$2,696,069.00
147,627.460 LINK
1.6998%
17
Hotcoin
LINK-USDT$18.30
0.0069349 Eth
$2,693,496.00
147,170.720 LINK
1.6946%
18
QMall
LINK-USDT$18.28
0.0069306 Eth
$1,972,716.00
108,825.348 LINK
1.2530%
19
Coinbase Exchange
LINK-EUR$18.31
0.0069355 Eth
$1,821,584.00
99,477.370 LINK
1.1454%
20
FMCPAY
LINK-USDT$18.26
0.0069176 Eth
$1,741,643.00
96,066.038 LINK
1.1061%
21
Dex-Trade
LINK-USDT$18.26
0.0069199 Eth
$1,557,710.00
85,299.890 LINK
0.9822%
22
Bitvavo
LINK-EUR$18.28
0.0069348 Eth
$1,401,350.00
76,640.623 LINK
0.8825%
23
Biconomy.com
LINK-USDT$18.28
0.0069294 Eth
$1,302,195.00
71,728.550 LINK
0.8259%
24
FMCPAY
LINK-ETH$18.27
0.0069226 Eth
$1,109,616.00
60,736.960 LINK
0.6993%
25
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.18
0.0068873 Eth
$1,089,632.00
33,311.771 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.3836%
26
FMCPAY
LINK-BTC$18.28
0.0069251 Eth
$949,218.00
52,179.800 LINK
0.6008%
27
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.26
0.0069169 Eth
$933,443.00
51,078.292 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.5881%
28
CoinEx
LINK-USDT$18.24
0.0069179 Eth
$886,401.00
48,849.019 LINK
0.5625%
29
Coinbase Exchange
LINK-GBP$18.31
0.0069368 Eth
$860,095.00
46,984.070 LINK
0.5410%
30
PointPay
LINK-USDT$18.27
0.0069289 Eth
$725,230.00
40,009.843 LINK
0.4607%
31
Trubit
LINK-USDT$18.26
0.0069242 Eth
$661,308.00
36,415.430 LINK
0.4193%
32
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.31
0.0069349 Eth
$566,217.00
30,916.664 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3560%
33
EXMO
LINK-USDT$18.30
0.0069310 Eth
$518,335.00
28,327.887 LINK
0.3262%
34
Phemex
LINK-USDT$18.28
0.0069251 Eth
$487,687.00
26,675.260 LINK
0.3071%
35
Gemini
LINK-USD$18.33
0.0069428 Eth
$479,396.00
26,153.596 LINK
0.3011%
36
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.25
0.0069169 Eth
$466,482.00
24,582.087 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.2830%
37
Bitbank
LINK-JPY$18.38
0.0069657 Eth
$443,578.00
24,130.586 LINK
0.2778%
38
Binance
LINK-TRY$18.43
0.0069824 Eth
$378,115.00
20,649.470 LINK
0.2378%
39
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$18.26
0.0069183 Eth
$373,378.00
41,396.288 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.4766%
40
QMall
LINK-USDC$18.28
0.0069262 Eth
$353,927.00
19,504.683 LINK
0.2246%
41
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$18.34
0.0069487 Eth
$345,833.00
19,069.179 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2196%
42
BigONE
LINK-USDT$18.36
0.0069584 Eth
$325,059.00
17,701.690 LINK
0.2038%
43
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$18.26
0.0069194 Eth
$312,211.00
16,789.622 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1933%
44
Slex
LINK-ETH$18.27
0.0069289 Eth
$295,789.00
16,188.500 LINK
0.1864%
45
BitMart
LINK-BTC$18.27
0.0069244 Eth
$279,567.00
15,299.160 LINK
0.1762%
46
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.24
0.0069112 Eth
$279,553.00
15,298.580 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1762%
47
OKX
LINK-USDC$18.26
0.0069153 Eth
$240,294.00
13,245.066 LINK
0.1525%
48
Coinbase Exchange
LINK-ETH$18.31
0.0069336 Eth
$230,716.00
12,602.910 LINK
0.1451%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.34
0.0069488 Eth
$227,161.00
12,366.882 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1424%
50
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$18.34
0.0069488 Eth
$186,181.00
184,299.692 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.1221%
51
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$18.23
0.0069061 Eth
$183,636.00
10,168.717 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1171%
52
CoinTR
LINK-TRY$18.40
0.0069779 Eth
$145,169.00
7,935.080 LINK
0.0914%
53
Bitkub
LINK-THB$18.33
0.0069432 Eth
$144,321.00
7,873.431 LINK
0.0907%
54
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$18.29
0.0069270 Eth
$141,217.00
7,771.598 0X5947BB275C521040051D82396192181B413227A3
0.0895%
55
GMO Japan
LINK-JPY$18.37
0.0069631 Eth
$129,884.00
7,071.200 LINK
0.0814%
56
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.25
0.0069155 Eth
$123,500.00
6,756.010 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0778%
57
Binance
LINK-BNB$18.28
0.0069230 Eth
$121,741.00
6,454.563 LINK
0.0743%
58
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$18.24
0.0069177 Eth
$113,837.00
6,274.766 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0722%
59
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$18.26
0.0069182 Eth
$98,556.00
5,439.146 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0626%
60
Uniswap V4 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$18.24
0.0069187 Eth
$93,900.00
5,184.194 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0597%
61
Hotcoin
LINK-BTC$18.29
0.0069299 Eth
$91,746.00
5,017.030 LINK
0.0578%
62
KuCoin
LINK-USDC$18.29
0.0069262 Eth
$87,699.00
4,795.736 LINK
0.0552%
63
BYDFi
LINK-USDC$18.24
0.0069085 Eth
$82,708.00
4,533.790 LINK
0.0522%
64
BitMart
LINK-ETH$18.27
0.0069229 Eth
$75,532.00
4,134.320 LINK
0.0476%
65
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$18.34
0.0069483 Eth
$71,472.00
3,938.057 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0453%
66
Coinbase Exchange
LINK-BTC$18.27
0.0069229 Eth
$70,584.00
3,863.530 LINK
0.0445%
67
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$18.31
0.0069384 Eth
$46,777.00
2,552.097 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0294%
68
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.25
0.0069169 Eth
$45,434.00
45,036.907 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5186%
69
EXMO
LINK-BTC$18.44
0.0069862 Eth
$37,039.00
2,008.217 LINK
0.0231%
70
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$18.29
0.0069281 Eth
$30,132.00
1,646.868 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0190%
71
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$18.36
0.0069546 Eth
$24,222.00
1,334.838 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0154%
72
Hotcoin
LINK-ETH$18.27
0.0069279 Eth
$22,819.00
1,249.020 LINK
0.0144%
73
Pangolin
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$18.30
0.0069310 Eth
$22,376.00
1,226.415 0X5947BB275C521040051D82396192181B413227A3
0.0141%
74
Gemini
LINK-BTC$18.34
0.0069464 Eth
$21,661.00
1,181.129 LINK
0.0136%
75
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$18.28
0.0069273 Eth
$20,128.00
30.960 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0004%
76
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$18.33
0.0069440 Eth
$17,395.31
939.867 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0108%
77
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$18.29
0.0069381 Eth
$12,526.59
679.349 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0078%
78
HTX
LINK-BTC$18.26
0.0069146 Eth
$12,006.89
661.004 LINK
0.0076%
79
CoinEx
LINK-USDC$18.19
0.0069050 Eth
$11,650.44
645.543 LINK
0.0074%
80
Dex-Trade
LINK-ETH$18.27
0.0069227 Eth
$10,183.26
557.440 LINK
0.0064%
81
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$18.18
0.0068853 Eth
$8,764.48
483.487 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0056%
82
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$18.27
0.0069213 Eth
$8,355.58
8,289.657 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.0954%
83
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$18.23
0.0069143 Eth
$7,999.47
440.555 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0051%
84
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.24
0.0069172 Eth
$7,776.73
32.932 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0004%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$18.26
0.0069180 Eth
$7,759.61
426.504 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0049%
86
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.22
0.0068994 Eth
$7,676.82
418.717 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0048%
87
Biswap V3
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.33
0.0069447 Eth
$6,942.56
366.768 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0042%
88
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.25
0.0069170 Eth
$6,008.76
329.673 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0038%
89
PancakeSwap V1 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.28
0.0069283 Eth
$5,619.08
296.837 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0034%
90
Bitexen
LINK-TRY$18.25
0.0069229 Eth
$3,749.85
205.434 LINK
0.0024%
91
Lydia Finance
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$18.18
0.0068964 Eth
$3,652.72
200.611 0X5947BB275C521040051D82396192181B413227A3
0.0023%
92
CoinEx
LINK-BTC$18.36
0.0069617 Eth
$3,244.75
176.423 LINK
0.0020%
93
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.27
0.0069230 Eth
$2,574.09
2,554.245 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0294%
94
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.21
0.0068957 Eth
$2,155.99
114.352 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
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0.0001%
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Biswap
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Swapsicle
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PancakeSwap V3 (Arbitrum)
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0.0008%
99
Uniswap V3 (BSC)
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0.0006%
100
PancakeSwap V3 (BSC)
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$827.53
45.820 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0005%

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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