ETH Price: $2,785.28 (+0.73%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

738,942 ( 0.004%)

Market

Price

$17.42 @ 0.006254 ETH (-1.65%)

Onchain Market Cap

$17,420,000,000.00

Circulating Supply Market Cap

$11,117,440,856.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0xe6ca97d68a34ca615c7f499f949dab0d8b54c6d3
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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 15736.36% |ETH 0.0003846 1526.11%

Market

Volume (24H):$310,637,964.00
Market Capitalization:$11,117,440,856.00
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
Binance
LINK-USDT$17.41
0.0062394 Eth
$30,165,750.00
1,702,161.300 LINK
17.8345%
2
HTX
LINK-USDT$17.41
0.0062375 Eth
$12,104,401.00
683,653.461 LINK
7.1630%
3
BTCC
LINK-USDT$17.39
0.0062363 Eth
$9,827,703.00
554,710.330 LINK
5.8120%
4
Coinbase Exchange
LINK-USD$17.38
0.0062273 Eth
$8,433,257.00
485,143.950 LINK
5.0831%
5
Ourbit
LINK-USDT$17.43
0.0062408 Eth
$6,623,507.00
373,735.400 LINK
3.9158%
6
Bybit
LINK-USDT$17.38
0.0062259 Eth
$6,552,418.00
369,414.644 LINK
3.8706%
7
P2B
LINK-USDT$17.43
0.0062410 Eth
$6,453,334.00
370,210.230 LINK
3.8789%
8
WEEX
LINK-USDT$17.39
0.0062314 Eth
$6,001,309.00
338,675.188 LINK
3.5485%
9
BVOX
LINK-USDT$17.40
0.0062345 Eth
$4,751,362.00
268,150.960 LINK
2.8096%
10
Bitget
LINK-USDT$17.39
0.0062302 Eth
$4,413,913.00
248,647.265 LINK
2.6052%
11
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$17.43
0.0062430 Eth
$4,095,084.00
230,876.419 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.4190%
12
DigiFinex
LINK-USDT$17.38
0.0062263 Eth
$3,559,627.00
204,849.040 LINK
2.1463%
13
KuCoin
LINK-USDT$17.37
0.0062253 Eth
$3,042,142.00
175,097.072 LINK
1.8346%
14
FameEX
LINK-USDT$17.43
0.0062427 Eth
$3,000,030.00
169,274.618 LINK
1.7736%
15
MEXC
LINK-EUR$17.42
0.0062394 Eth
$2,996,629.00
172,054.300 LINK
1.8027%
16
XT.COM
LINK-USDT$17.42
0.0062431 Eth
$2,971,790.00
167,695.770 LINK
1.7570%
17
MEXC
LINK-USDC$17.42
0.0062473 Eth
$2,891,546.00
165,977.800 LINK
1.7390%
18
Hotcoin
LINK-USDT$17.42
0.0062438 Eth
$2,823,820.00
162,061.840 LINK
1.6980%
19
OKX
LINK-USDT$17.40
0.0062346 Eth
$2,814,677.00
158,528.614 LINK
1.6610%
20
Coinstore
LINK-USDT$17.39
0.0062313 Eth
$2,766,878.00
156,207.030 LINK
1.6367%
21
Binance
LINK-FDUSD$17.43
0.0062406 Eth
$2,731,832.00
154,530.590 LINK
1.6191%
22
LBank
LINK-USDT$17.38
0.0062291 Eth
$2,645,000.00
152,158.590 LINK
1.5943%
23
CoinW
LINK-USDT$17.37
0.0062243 Eth
$2,360,348.00
135,889.730 LINK
1.4238%
24
Gate.io
LINK-USDT$17.39
0.0062308 Eth
$2,347,686.00
132,587.020 LINK
1.3892%
25
BTSE
LINK-USDT$17.36
0.0062234 Eth
$2,272,364.00
130,899.915 LINK
1.3715%
26
Binance
LINK-USDC$17.42
0.0062336 Eth
$2,261,709.00
127,502.940 LINK
1.3359%
27
Azbit
LINK-USDT$17.39
0.0062330 Eth
$1,856,852.00
104,718.137 LINK
1.0972%
28
Bitunix
LINK-USDT$17.39
0.0062356 Eth
$1,695,738.00
97,551.750 LINK
1.0221%
29
BYDFi
LINK-USDT$17.41
0.0062311 Eth
$1,645,040.00
94,478.940 LINK
0.9899%
30
FMCPAY
LINK-USDT$17.39
0.0062323 Eth
$1,549,649.00
87,548.850 LINK
0.9173%
31
Toobit
LINK-USDT$17.36
0.0062211 Eth
$1,482,333.00
83,599.150 LINK
0.8759%
32
Biconomy.com
LINK-USDT$17.40
0.0062344 Eth
$1,102,394.00
62,213.860 LINK
0.6519%
33
Dex-Trade
LINK-USDT$17.37
0.0062245 Eth
$959,266.00
55,223.676 LINK
0.5786%
34
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.43
0.0062439 Eth
$958,092.00
54,056.837 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.5664%
35
FMCPAY
LINK-ETH$17.41
0.0062377 Eth
$888,858.00
50,258.560 LINK
0.5266%
36
FMCPAY
LINK-BTC$17.37
0.0062303 Eth
$818,389.00
46,326.500 LINK
0.4854%
37
CoinEx
LINK-USDT$17.37
0.0062283 Eth
$805,097.00
45,418.223 LINK
0.4759%
38
Bitvavo
LINK-EUR$17.51
0.0062680 Eth
$695,574.00
39,726.528 LINK
0.4162%
39
Crypto.com Exchange
LINK-USDT$17.39
0.0062298 Eth
$600,877.00
34,551.130 LINK
0.3620%
40
Coinbase Exchange
LINK-EUR$17.42
0.0062456 Eth
$530,042.00
30,432.880 LINK
0.3189%
41
Coinbase Exchange
LINK-GBP$17.39
0.0062371 Eth
$432,548.00
24,868.850 LINK
0.2606%
42
Azbit
LINK-ETH$17.43
0.0062454 Eth
$412,781.00
23,284.394 LINK
0.2440%
43
Pionex
LINK-USDT$17.41
0.0062333 Eth
$401,782.00
22,667.920 LINK
0.2375%
44
BigONE
LINK-USDT$17.38
0.0062310 Eth
$355,935.00
20,484.720 LINK
0.2146%
45
WhiteBIT
LINK-BTC$17.41
0.0062406 Eth
$283,737.00
16,299.670 LINK
0.1708%
46
BitMart
LINK-BTC$17.39
0.0062315 Eth
$275,906.00
15,864.680 LINK
0.1662%
47
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$17.46
0.0062608 Eth
$275,483.00
15,690.033 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1644%
48
Bitbank
LINK-JPY$17.40
0.0062387 Eth
$267,930.00
15,400.755 LINK
0.1614%
49
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.38
0.0062337 Eth
$243,889.00
248,306.229 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.6016%
50
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.38
0.0062337 Eth
$195,193.00
11,024.885 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1155%
51
Bitci TR
LINK-TRY$17.53
0.0062802 Eth
$184,860.00
10,418.250 LINK
0.1092%
52
Slex
LINK-ETH$17.43
0.0062400 Eth
$184,209.00
10,450.260 LINK
0.1095%
53
BitStorage
LINK-ETH$17.40
0.0062355 Eth
$179,035.00
10,288.670 LINK
0.1078%
54
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$17.43
0.0062439 Eth
$174,072.00
9,842.193 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1031%
55
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.37
0.0062275 Eth
$173,311.00
9,769.451 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1024%
56
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$17.45
0.0062565 Eth
$133,722.00
7,643.783 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0801%
57
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.40
0.0062397 Eth
$120,576.00
6,791.566 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0712%
58
Bybit
LINK-USDC$17.39
0.0062305 Eth
$104,345.00
5,924.091 LINK
0.0621%
59
Hotcoin
LINK-BTC$17.40
0.0062364 Eth
$94,907.00
5,453.380 LINK
0.0571%
60
GMO Japan
LINK-JPY$17.43
0.0062449 Eth
$91,339.00
5,240.100 LINK
0.0549%
61
BitMart
LINK-ETH$17.45
0.0062517 Eth
$89,292.00
5,117.680 LINK
0.0536%
62
BYDFi
LINK-USDC$17.51
0.0062681 Eth
$85,124.00
4,860.810 LINK
0.0509%
63
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$17.38
0.0062259 Eth
$79,640.00
4,500.862 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0472%
64
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.42
0.0062471 Eth
$78,855.00
4,461.846 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0467%
65
Kanga
LINK-PLN$17.44
0.0062523 Eth
$56,188.00
0.000 LINK
0.0000%
66
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$17.45
0.0062526 Eth
$49,263.00
2,776.113 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0291%
67
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$17.48
0.0062670 Eth
$48,919.00
2,766.942 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0290%
68
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.43
0.0062439 Eth
$48,586.00
49,455.630 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5182%
69
KuCoin
LINK-USDC$17.41
0.0062367 Eth
$48,054.00
2,760.788 LINK
0.0289%
70
Uniswap V4 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.40
0.0062350 Eth
$44,384.00
45,214.857 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.4737%
71
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$17.54
0.0062892 Eth
$33,438.00
1,912.146 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0200%
72
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.40
0.0062350 Eth
$27,059.00
1,527.423 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0160%
73
Indodax
LINK-IDR$17.60
0.0063082 Eth
$25,082.00
1,424.791 LINK
0.0149%
74
Dex-Trade
LINK-ETH$17.42
0.0062425 Eth
$23,496.00
1,348.760 LINK
0.0141%
75
EXMO
LINK-BTC$17.45
0.0062528 Eth
$23,159.00
1,326.994 LINK
0.0139%
76
Uniswap V4 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.45
0.0062512 Eth
$20,391.00
20,700.252 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.2169%
77
HashKey Global
LINK-USDT$17.46
0.0062570 Eth
$15,055.49
850.709 LINK
0.0089%
78
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$17.40
0.0062328 Eth
$13,101.94
740.439 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0078%
79
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$17.37
0.0062274 Eth
$10,776.56
612.955 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0064%
80
Uniswap V4 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$17.49
0.0062729 Eth
$10,678.30
603.158 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0063%
81
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.40
0.0062386 Eth
$7,559.43
7,687.575 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.0805%
82
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$17.39
0.0062342 Eth
$7,438.99
419.889 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0044%
83
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$17.49
0.0062722 Eth
$6,544.40
9.216 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0001%
84
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.43
0.0062502 Eth
$6,486.93
367.192 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0038%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$17.41
0.0062437 Eth
$5,091.43
287.638 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0030%
86
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$17.50
0.0062750 Eth
$4,651.14
263.067 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0028%
87
Uniswap V3 (BSC)
0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$17.40
0.0062387 Eth
$4,624.19
562.376 0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63
0.0059%
88
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.43
0.0062407 Eth
$4,359.02
4,432.398 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0464%
89
CoinEx
LINK-USDC$17.41
0.0062380 Eth
$3,926.38
222.321 LINK
0.0023%
90
Bitexen
LINK-TRY$17.28
0.0061860 Eth
$3,845.64
222.520 LINK
0.0023%
91
Uniswap V4 (Polygon)
0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.45
0.0062502 Eth
$3,480.26
3,535.637 0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174
0.0370%
92
CoinEx
LINK-BTC$17.38
0.0062318 Eth
$3,128.39
176.544 LINK
0.0018%
93
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$17.35
0.0062214 Eth
$2,519.84
143.890 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0015%
94
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.55
0.0062938 Eth
$2,492.34
10.173 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0001%
95
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.43
0.0062518 Eth
$2,423.54
136.468 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0014%
96
Retro
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.50
0.0062698 Eth
$1,049.17
59.155 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0006%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$17.38
0.0062315 Eth
$941.43
53.672 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0006%
98
KuCoin
LINK-KCS$17.42
0.0062427 Eth
$829.64
47.613 LINK
0.0005%
99
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XD036414FA2BCBB802691491E323BFF1348C5F4BA$17.43
0.0062421 Eth
$762.91
43.292 0X5947BB275C521040051D82396192181B413227A3
0.0005%
100
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$17.59
0.0063004 Eth
$713.87
40.288 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0004%

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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