ETH Price: $3,615.94 (-0.56%)
Gas: 6.32 Gwei
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

729,698 ( 0.037%)

Market

Price

$23.21 @ 0.006419 ETH (-1.00%)

Onchain Market Cap

$23,210,000,000.00

Circulating Supply Market Cap

$14,639,996,039.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0x1ebf5c5fe0196ee6db17604334872c6ca0645c5c
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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 21000% |ETH 0.0003846 1569.01%

Market

Volume (24H):$672,456,904.00
Market Capitalization:$14,639,996,039.00
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$23.18
0.0063986 Eth
$60,403,283.00
2,590,260.740 LINK
18.7515%
2
Websea
LINK-USDT$23.19
0.0064015 Eth
$59,678,664.00
0.000 LINK
0.0000%
3
Coinbase Exchange
LINK-USD$23.14
0.0063981 Eth
$24,411,108.00
1,054,748.880 LINK
7.6356%
4
Slex
LINK-USDT$23.16
0.0064026 Eth
$23,891,844.00
1,024,173.890 LINK
7.4142%
5
WhiteBIT
LINK-USDT$23.11
0.0063899 Eth
$19,946,142.00
863,057.240 LINK
6.2479%
6
Bybit
LINK-USDT$23.11
0.0063896 Eth
$16,062,965.00
688,819.471 LINK
4.9865%
7
WEEX
LINK-USDT$23.13
0.0063855 Eth
$15,840,725.00
679,228.580 LINK
4.9171%
8
MEXC
LINK-USDT$23.14
0.0063976 Eth
$15,346,011.00
663,094.610 LINK
4.8003%
9
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.16
0.0064018 Eth
$15,057,093.00
645,122.842 0X514910771AF9CA656AF840DFF83E8264ECF986CA
4.6702%
10
P2B
LINK-USDT$23.16
0.0063946 Eth
$12,087,402.00
521,914.810 LINK
3.7783%
11
CoinW
LINK-USDT$23.10
0.0063882 Eth
$10,865,811.00
470,287.130 LINK
3.4045%
12
OKX
LINK-USDT$23.09
0.0063853 Eth
$10,341,355.00
443,507.489 LINK
3.2107%
13
BVOX
LINK-USDT$23.20
0.0064056 Eth
$8,885,315.00
380,697.530 LINK
2.7560%
14
HTX
LINK-USDT$23.11
0.0063890 Eth
$7,318,649.00
313,646.542 LINK
2.2706%
15
XT.COM
LINK-USDT$23.13
0.0063948 Eth
$6,030,139.00
258,654.590 LINK
1.8725%
16
Azbit
LINK-USDT$23.18
0.0063940 Eth
$6,022,197.00
258,154.100 LINK
1.8688%
17
Coinstore
LINK-USDT$23.24
0.0063958 Eth
$5,626,696.00
241,256.560 LINK
1.7465%
18
Bithumb
LINK-KRW$23.28
0.0064359 Eth
$4,530,727.00
194,611.639 LINK
1.4088%
19
BYDFi
LINK-USDT$23.21
0.0063900 Eth
$3,904,664.00
168,200.530 LINK
1.2176%
20
BTSE
LINK-USDT$23.18
0.0063967 Eth
$3,039,327.00
131,123.133 LINK
0.9492%
21
LATOKEN
LINK-USDT$23.18
0.0063992 Eth
$2,932,840.00
126,538.054 LINK
0.9160%
22
Hotcoin
LINK-USDT$23.19
0.0064006 Eth
$2,099,416.00
90,550.090 LINK
0.6555%
23
Bitvavo
LINK-EUR$23.16
0.0064026 Eth
$1,961,258.00
84,666.266 LINK
0.6129%
24
Dex-Trade
LINK-USDT$23.12
0.0063913 Eth
$1,925,019.00
83,276.000 LINK
0.6029%
25
Dcoin
LINK-USDT$23.20
0.0063997 Eth
$1,817,485.00
78,349.000 LINK
0.5672%
26
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.13
0.0063953 Eth
$1,681,222.00
72,322.503 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.5236%
27
CoinEx
LINK-USDT$23.27
0.0064028 Eth
$1,641,740.00
70,477.994 LINK
0.5102%
28
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.12
0.0063930 Eth
$1,548,278.00
66,601.367 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.4821%
29
KuCoin
LINK-USDT$23.12
0.0063907 Eth
$1,480,233.00
64,029.096 LINK
0.4635%
30
tanX
LINK-USDC$23.14
0.0063864 Eth
$1,110,513.00
47,559.410 LINK
0.3443%
31
PointPay
LINK-USDT$23.28
0.0064049 Eth
$971,247.00
41,664.559 LINK
0.3016%
32
Trubit
LINK-USDT$23.13
0.0063932 Eth
$921,740.00
39,533.630 LINK
0.2862%
33
EXMO
LINK-USDT$23.10
0.0063873 Eth
$868,011.00
37,574.414 LINK
0.2720%
34
Coinbase Exchange
LINK-EUR$23.11
0.0063886 Eth
$854,540.00
36,976.340 LINK
0.2677%
35
WhiteBIT
LINK-TRY$23.12
0.0063918 Eth
$741,516.00
32,075.400 LINK
0.2322%
36
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.16
0.0063933 Eth
$674,446.00
28,919.391 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2094%
37
WhiteBIT
LINK-BTC$23.11
0.0063906 Eth
$668,517.00
28,922.940 LINK
0.2094%
38
Bybit
LINK-USDC$23.10
0.0063862 Eth
$620,728.00
26,662.774 LINK
0.1930%
39
Bitstamp
LINK-EUR$23.17
0.0064068 Eth
$620,160.00
26,763.021 LINK
0.1937%
40
Bitstamp
LINK-USD$23.15
0.0064006 Eth
$606,986.00
26,219.699 LINK
0.1898%
41
Gemini
LINK-USD$23.07
0.0063772 Eth
$603,202.00
26,152.040 LINK
0.1893%
42
Bitbank
LINK-JPY$23.03
0.0063580 Eth
$516,016.00
22,407.835 LINK
0.1622%
43
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.16
0.0064012 Eth
$515,019.00
34,416.186 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2491%
44
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.22
0.0064125 Eth
$490,705.00
21,167.433 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1532%
45
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.14
0.0063965 Eth
$479,469.00
483,763.798 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
3.5021%
46
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.22
0.0064189 Eth
$457,278.00
19,477.891 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.1410%
47
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.27
0.0064335 Eth
$414,794.00
17,779.658 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1287%
48
Bitbegin
LINK-USDT$23.19
0.0063967 Eth
$412,078.00
17,656.945 LINK
0.1278%
49
BigONE
LINK-USDT$23.18
0.0064062 Eth
$356,219.00
15,369.120 LINK
0.1113%
50
Coinbase Exchange
LINK-GBP$23.12
0.0063901 Eth
$349,051.00
15,100.090 LINK
0.1093%
51
Coinbase Exchange
LINK-ETH$23.14
0.0063959 Eth
$317,595.00
13,726.850 LINK
0.0994%
52
Slex
LINK-ETH$23.17
0.0063971 Eth
$305,628.00
13,117.220 LINK
0.0950%
53
BitMart
LINK-BTC$23.14
0.0063981 Eth
$263,795.00
11,397.600 LINK
0.0825%
54
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.16
0.0063938 Eth
$250,732.00
252,846.160 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.8304%
55
Bitci TR
LINK-TRY$23.26
0.0064227 Eth
$241,774.00
10,340.100 LINK
0.0749%
56
OKX
LINK-USDC$23.10
0.0063862 Eth
$232,304.00
9,970.103 LINK
0.0722%
57
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.27
0.0064331 Eth
$225,215.00
9,592.501 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0694%
58
Coinone
LINK-KRW$23.31
0.0064462 Eth
$154,590.00
6,630.508 LINK
0.0480%
59
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.19
0.0064101 Eth
$123,985.00
5,312.554 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0385%
60
LATOKEN
LINK-BTC$23.16
0.0063948 Eth
$106,753.00
4,609.033 LINK
0.0334%
61
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.21
0.0064089 Eth
$95,489.00
4,093.801 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0296%
62
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.19
0.0064037 Eth
$92,490.00
3,988.925 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0289%
63
Bitkub
LINK-THB$23.13
0.0063934 Eth
$91,290.00
3,947.368 LINK
0.0286%
64
BitMart
LINK-ETH$23.15
0.0063989 Eth
$84,584.00
3,654.120 LINK
0.0265%
65
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.21
0.0064159 Eth
$79,421.00
3,411.351 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0247%
66
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.16
0.0063938 Eth
$77,852.00
3,333.583 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0241%
67
Hotcoin
LINK-BTC$23.16
0.0063948 Eth
$67,880.00
2,930.670 LINK
0.0212%
68
Gemini
LINK-BTC$23.14
0.0063969 Eth
$58,255.00
2,517.895 LINK
0.0182%
69
Nonkyc.io
LINK-BTC$23.05
0.0063726 Eth
$54,127.00
2,319.127 LINK
0.0168%
70
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.28
0.0064366 Eth
$48,252.00
48,372.378 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3502%
71
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.12
0.0063911 Eth
$46,222.00
1,981.454 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0143%
72
Bitexen
LINK-TRY$23.00
0.0063454 Eth
$31,861.00
1,385.265 LINK
0.0100%
73
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$23.24
0.0064252 Eth
$30,982.00
40.325 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0003%
74
CoinEx
LINK-USDC$23.28
0.0064269 Eth
$29,173.00
1,285.757 LINK
0.0093%
75
Tokpie
LINK-USDT$23.49
0.0064629 Eth
$23,593.00
1,004.570 LINK
0.0073%
76
Hotcoin
LINK-ETH$23.15
0.0063996 Eth
$23,546.00
1,016.890 LINK
0.0074%
77
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$23.15
0.0063914 Eth
$19,329.43
828.508 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0060%
78
Korbit
LINK-KRW$23.26
0.0064312 Eth
$16,708.05
717.634 LINK
0.0052%
79
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$23.27
0.0064208 Eth
$14,739.36
630.897 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0046%
80
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$23.20
0.0064135 Eth
$14,226.59
610.500 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0044%
81
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.16
0.0064025 Eth
$12,592.01
541.171 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0039%
82
Dex-Trade
LINK-ETH$23.11
0.0063891 Eth
$12,349.58
534.420 LINK
0.0039%
83
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$23.08
0.0063719 Eth
$11,471.24
492.431 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0036%
84
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$23.25
0.0064270 Eth
$11,360.16
479.600 0X5947BB275C521040051D82396192181B413227A3
0.0035%
85
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$23.25
0.0064276 Eth
$10,545.88
450.336 0X5947BB275C521040051D82396192181B413227A3
0.0033%
86
KuCoin
LINK-KCS$23.13
0.0063929 Eth
$9,228.89
399.070 LINK
0.0029%
87
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$23.20
0.0064146 Eth
$6,403.52
274.123 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0020%
88
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.17
0.0063963 Eth
$5,355.43
5,402.507 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.0391%
89
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.16
0.0063951 Eth
$5,258.22
5,294.233 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0383%
90
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.20
0.0064009 Eth
$3,242.89
138.996 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0010%
91
Ace
LINK-USDT$23.13
0.0063851 Eth
$2,373.65
101.750 LINK
0.0007%
92
CoinEx
LINK-BTC$23.24
0.0064243 Eth
$2,369.64
101.465 LINK
0.0007%
93
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$23.20
0.0064062 Eth
$2,165.73
94.243 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0007%
94
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$23.18
0.0063950 Eth
$1,608.49
69.057 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0005%
95
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$23.27
0.0064194 Eth
$932.62
39.883 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0003%
96
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.17
0.0063951 Eth
$603.02
1.763 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0000%
97
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$23.25
0.0064266 Eth
$592.75
25.373 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0002%
98
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X61299774020DA444AF134C82FA83E3810B309991$23.39
0.0064590 Eth
$486.35
20.612 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0001%
99
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.23
0.0064142 Eth
$374.80
16.042 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0001%
100
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1$23.22
0.0064095 Eth
$248.87
10.666 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
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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