ETH Price: $3,224.85 (-1.62%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

725,487 ( -0.036%)

Market

Price

$19.47 @ 0.006037 ETH (-3.95%)

Onchain Market Cap

$19,470,000,000.00

Circulating Supply Market Cap

$12,273,439,235.00

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
Binance Dep: 0x17f8E711E544903F6A8d3ca1e05cE24AdbFC5eD3
Balance
0 LINK

Value
$0.00
0x17f8e711e544903f6a8d3ca1e05ce24adbfc5ed3
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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 17600% |ETH 0.0003846 1469.68%

Market

Volume (24H):$638,460,455.00
Market Capitalization:$12,273,439,235.00
Circulating Supply:631,099,972.00 LINK
Market Data Source: Coinmarketcap

ICO Information

ICO Start Date : Sep 19, 2017   
Total Cap : $32,000,000
ICO Price  : $0.11 | 0.0003846 ETH
Country : USA

# Exchange Pair Price  24H Volume % Volume
1
Binance
LINK-USDT$19.44
0.0060163 Eth
$64,439,923.00
3,238,323.760 LINK
21.3054%
2
Coinbase Exchange
LINK-USD$19.42
0.0060217 Eth
$21,187,212.00
1,090,887.250 LINK
7.1771%
3
P2B
LINK-USDT$19.45
0.0060209 Eth
$12,823,325.00
659,323.420 LINK
4.3378%
4
WEEX
LINK-USDT$19.42
0.0060214 Eth
$11,852,517.00
595,826.080 LINK
3.9200%
5
Bitget
LINK-USDT$19.42
0.0060102 Eth
$11,823,364.00
594,969.359 LINK
3.9144%
6
MEXC
LINK-USDT$19.43
0.0060227 Eth
$10,171,275.00
523,473.100 LINK
3.4440%
7
Bybit
LINK-USDT$19.43
0.0060124 Eth
$10,051,384.00
505,450.208 LINK
3.3254%
8
Ourbit
LINK-USDT$19.44
0.0060260 Eth
$9,988,057.00
502,494.380 LINK
3.3060%
9
BVOX
LINK-USDT$19.45
0.0060295 Eth
$9,246,412.00
464,749.240 LINK
3.0576%
10
DigiFinex
LINK-USDT$19.45
0.0060197 Eth
$7,474,608.00
384,303.690 LINK
2.5284%
11
Gate.io
LINK-USDT$19.42
0.0060124 Eth
$7,032,473.00
355,158.080 LINK
2.3366%
12
XT.COM
LINK-USDT$19.44
0.0060218 Eth
$6,428,889.00
323,000.450 LINK
2.1251%
13
FameEX
LINK-USDT$19.46
0.0060258 Eth
$6,416,903.00
322,324.250 LINK
2.1206%
14
Azbit
LINK-USDT$19.40
0.0060215 Eth
$6,398,916.00
321,368.526 LINK
2.1143%
15
Deepcoin
LINK-USDT$19.50
0.0060230 Eth
$6,251,716.00
311,264.453 LINK
2.0479%
16
Coinstore
LINK-USDT$19.43
0.0060182 Eth
$5,722,435.00
287,851.470 LINK
1.8938%
17
HTX
LINK-USDT$19.42
0.0060113 Eth
$5,423,447.00
272,444.928 LINK
1.7925%
18
OKX
LINK-USDT$19.44
0.0060182 Eth
$5,110,082.00
256,793.124 LINK
1.6895%
19
Niza Global
LINK-USD$19.43
0.0060248 Eth
$5,021,133.00
251,965.366 LINK
1.6577%
20
Kraken
LINK-USD$19.45
0.0060185 Eth
$4,900,115.00
251,985.493 LINK
1.6578%
21
CoinW
LINK-USDT$19.43
0.0060230 Eth
$4,890,527.00
251,749.790 LINK
1.6563%
22
Binance
LINK-FDUSD$19.42
0.0060100 Eth
$4,718,864.00
236,966.310 LINK
1.5590%
23
Bitunix
LINK-USDT$19.41
0.0060150 Eth
$4,492,382.00
231,561.340 LINK
1.5235%
24
Toobit
LINK-USDT$19.43
0.0060179 Eth
$4,124,346.00
207,221.730 LINK
1.3633%
25
BYDFi
LINK-USDT$19.44
0.0060205 Eth
$3,513,623.00
180,727.830 LINK
1.1890%
26
KuCoin
LINK-USDT$19.44
0.0060177 Eth
$3,293,930.00
169,412.544 LINK
1.1146%
27
LATOKEN
LINK-USDT$19.43
0.0060245 Eth
$3,156,625.00
162,476.302 LINK
1.0690%
28
LBank
LINK-USDT$19.43
0.0060247 Eth
$3,059,483.00
157,469.560 LINK
1.0360%
29
QMall
LINK-USDT$19.42
0.0060234 Eth
$2,641,875.00
132,776.632 LINK
0.8736%
30
BTSE
LINK-USDT$19.41
0.0060181 Eth
$2,446,967.00
126,044.045 LINK
0.8293%
31
FMCPAY
LINK-USDT$19.43
0.0060178 Eth
$2,165,760.00
108,987.625 LINK
0.7170%
32
Dex-Trade
LINK-USDT$19.46
0.0060229 Eth
$2,020,522.00
103,834.280 LINK
0.6831%
33
Biconomy.com
LINK-USDT$19.42
0.0060221 Eth
$1,338,801.00
67,179.380 LINK
0.4420%
34
CoinEx
LINK-USDT$19.51
0.0060330 Eth
$1,276,492.00
64,185.192 LINK
0.4223%
35
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.42
0.0060228 Eth
$1,161,015.00
58,910.338 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.3876%
36
FMCPAY
LINK-BTC$19.45
0.0060239 Eth
$1,074,748.00
54,143.700 LINK
0.3562%
37
PointPay
LINK-USDT$19.45
0.0060240 Eth
$1,061,845.00
53,345.316 LINK
0.3510%
38
FMCPAY
LINK-ETH$19.55
0.0060444 Eth
$1,026,624.00
51,929.760 LINK
0.3417%
39
Bitvavo
LINK-EUR$19.45
0.0060239 Eth
$860,468.00
44,238.209 LINK
0.2910%
40
Coinbase Exchange
LINK-USDT$19.42
0.0060192 Eth
$850,467.00
43,795.765 LINK
0.2881%
41
Coinbase Exchange
LINK-ETH$19.43
0.0060254 Eth
$751,474.00
38,669.820 LINK
0.2544%
42
Coinbase Exchange
LINK-EUR$19.43
0.0060142 Eth
$730,373.00
37,594.600 LINK
0.2473%
43
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$19.51
0.0060488 Eth
$695,670.00
35,556.850 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2339%
44
EXMO
LINK-USDT$19.42
0.0060136 Eth
$548,008.00
28,219.514 LINK
0.1857%
45
Coinbase Exchange
LINK-GBP$19.46
0.0060244 Eth
$478,746.00
24,600.680 LINK
0.1619%
46
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$19.41
0.0060172 Eth
$465,295.00
24,006.159 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1579%
47
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$19.41
0.0060186 Eth
$453,298.00
464,737.313 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
3.0576%
48
BigONE
LINK-USDT$19.43
0.0060221 Eth
$414,068.00
21,312.430 LINK
0.1402%
49
Bitbank
LINK-JPY$19.44
0.0060290 Eth
$377,662.00
19,424.289 LINK
0.1278%
50
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$19.49
0.0060428 Eth
$342,354.00
17,324.127 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1140%
51
Gemini
LINK-USD$19.44
0.0060159 Eth
$258,284.00
13,287.948 LINK
0.0874%
52
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.41
0.0060169 Eth
$256,290.00
13,168.132 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0866%
53
BitMart
LINK-BTC$19.46
0.0060229 Eth
$255,485.00
13,128.700 LINK
0.0864%
54
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$19.41
0.0060169 Eth
$241,095.00
247,447.611 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.6280%
55
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$19.51
0.0060488 Eth
$237,990.00
11,986.061 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0789%
56
QMall
LINK-USDC$19.45
0.0060220 Eth
$232,676.00
11,687.297 LINK
0.0769%
57
GMO Japan
LINK-JPY$19.50
0.0060476 Eth
$227,612.00
11,669.700 LINK
0.0768%
58
Coinbase Exchange
LINK-BTC$19.47
0.0060244 Eth
$209,222.00
10,748.050 LINK
0.0707%
59
Bitci TR
LINK-TRY$19.54
0.0060466 Eth
$198,204.00
9,927.100 LINK
0.0653%
60
OKX
LINK-USDC$19.42
0.0060094 Eth
$192,400.00
9,690.951 LINK
0.0638%
61
bitcastle
LINK-USDT$19.44
0.0060210 Eth
$143,847.00
7,225.990 LINK
0.0475%
62
BitStorage
LINK-ETH$19.42
0.0060210 Eth
$110,964.00
5,714.270 LINK
0.0376%
63
Binance US
LINK-USDT$19.45
0.0060301 Eth
$110,027.00
5,656.128 LINK
0.0372%
64
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$19.46
0.0060310 Eth
$94,012.00
4,802.070 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0316%
65
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$19.41
0.0060169 Eth
$90,867.00
4,570.091 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0301%
66
Hotcoin
LINK-BTC$19.43
0.0060235 Eth
$87,160.00
4,486.550 LINK
0.0295%
67
Bitso
LINK-USD$19.42
0.0060130 Eth
$86,641.00
4,460.575 LINK
0.0293%
68
LATOKEN
LINK-BTC$19.43
0.0060240 Eth
$85,992.00
4,426.458 LINK
0.0291%
69
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.43
0.0060247 Eth
$69,863.00
3,553.943 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0234%
70
Bitcointry
LINK-USDT$19.45
0.0060224 Eth
$64,667.00
3,265.595 LINK
0.0215%
71
CoinEx
LINK-BTC$19.33
0.0059933 Eth
$56,726.00
2,904.505 LINK
0.0191%
72
Bitkub
LINK-THB$19.41
0.0060105 Eth
$51,025.00
2,629.317 LINK
0.0173%
73
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$19.45
0.0060298 Eth
$44,204.00
2,257.465 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0149%
74
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$19.51
0.0060488 Eth
$42,304.00
43,205.557 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.2843%
75
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$19.45
0.0060209 Eth
$42,224.00
2,059.118 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0135%
76
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$19.40
0.0060162 Eth
$32,240.00
1,633.209 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0107%
77
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$19.41
0.0060169 Eth
$22,054.00
1,134.720 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0075%
78
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$19.42
0.0060220 Eth
$20,027.00
1,006.880 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0066%
79
Bitexen
LINK-TRY$19.27
0.0059832 Eth
$16,635.05
863.279 LINK
0.0057%
80
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$19.55
0.0060507 Eth
$15,932.09
797.565 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0052%
81
Dex-Trade
LINK-ETH$19.67
0.0060481 Eth
$15,474.92
786.870 LINK
0.0052%
82
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$19.50
0.0060458 Eth
$9,067.16
12.261 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0001%
83
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$19.50
0.0060454 Eth
$6,584.39
331.111 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0022%
84
CoinEx
LINK-USDC$19.42
0.0060211 Eth
$5,750.06
288.763 LINK
0.0019%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$19.46
0.0060334 Eth
$5,552.64
289.683 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0019%
86
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$19.43
0.0060232 Eth
$5,111.29
258.503 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0017%
87
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$19.52
0.0060454 Eth
$4,556.52
4,638.532 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0305%
88
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$19.38
0.0059983 Eth
$2,949.11
10.493 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0001%
89
Uniswap V3 (Arbitrum One)
0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$19.54
0.0060470 Eth
$2,833.02
727.863 0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8
0.0048%
90
Uniswap V3 (Ethereum)
0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA$19.55
0.0060509 Eth
$1,983.56
6.991 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9
0.0000%
91
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$19.56
0.0060495 Eth
$1,868.84
96.900 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0006%
92
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$19.51
0.0060394 Eth
$1,423.68
72.765 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0005%
93
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$19.51
0.0060343 Eth
$968.52
48.522 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0003%
94
Retro
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.59
0.0060496 Eth
$966.25
49.028 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0003%
95
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$19.42
0.0060137 Eth
$782.52
40.690 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0003%
96
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$19.51
0.0060314 Eth
$777.83
39.061 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0003%
97
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$19.45
0.0060210 Eth
$741.56
38.002 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0003%
98
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1$19.47
0.0060337 Eth
$587.67
29.477 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0002%
99
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$19.52
0.0060412 Eth
$583.02
29.430 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0002%
100
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0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063$19.54
0.0060407 Eth
$332.86
16.744 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0001%

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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