ETH Price: $3,662.90 (+0.72%)
Gas: 6.15 Gwei
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

729,724 ( 0.002%)

Market

Price

$23.78 @ 0.006492 ETH (+2.07%)

Onchain Market Cap

$23,780,000,000.00

Circulating Supply Market Cap

$15,009,007,052.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
111.02349123453794021 LINK

Value
$2,640.14 ( ~0.720779504102951 Eth) [0.0000%]
0x56ee49d9a870a06da9fae81f137ab2c79637bc0c
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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 21518.18% |ETH 0.0003846 1587.99%

Market

Volume (24H):$758,475,236.00
Market Capitalization:$15,009,007,052.00
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
Coinbase Exchange
LINK-USD$23.80
0.0064914 Eth
$28,735,857.00
1,207,642.670 LINK
13.0635%
2
Bitget
LINK-USDT$23.78
0.0064958 Eth
$20,492,412.00
876,924.593 LINK
9.4860%
3
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.75
0.0064840 Eth
$18,026,252.00
760,875.314 0X514910771AF9CA656AF840DFF83E8264ECF986CA
8.2306%
4
Bybit
LINK-USDT$23.80
0.0065003 Eth
$18,023,826.00
771,028.641 LINK
8.3405%
5
P2B
LINK-USDT$23.81
0.0064980 Eth
$14,680,521.00
616,633.770 LINK
6.6703%
6
CoinW
LINK-USDT$23.81
0.0065020 Eth
$13,006,302.00
546,268.140 LINK
5.9092%
7
OKX
LINK-USDT$23.79
0.0064996 Eth
$11,393,250.00
486,955.042 LINK
5.2676%
8
HTX
LINK-USDT$23.78
0.0064964 Eth
$7,748,885.00
331,607.946 LINK
3.5871%
9
XT.COM
LINK-USDT$23.80
0.0064953 Eth
$7,080,342.00
302,817.800 LINK
3.2757%
10
Azbit
LINK-USDT$23.76
0.0064792 Eth
$7,043,896.00
301,240.259 LINK
3.2586%
11
Coinstore
LINK-USDT$23.77
0.0064840 Eth
$6,473,608.00
276,908.160 LINK
2.9954%
12
Bithumb
LINK-KRW$23.86
0.0065168 Eth
$4,797,644.00
201,073.896 LINK
2.1751%
13
BYDFi
LINK-USDT$23.80
0.0064936 Eth
$4,678,348.00
196,571.730 LINK
2.1264%
14
LATOKEN
LINK-USDT$23.80
0.0064989 Eth
$3,457,636.00
145,274.391 LINK
1.5715%
15
Kraken
LINK-USD$23.81
0.0065048 Eth
$2,977,298.00
125,022.867 LINK
1.3524%
16
Hotcoin
LINK-USDT$23.82
0.0064971 Eth
$2,574,713.00
108,080.190 LINK
1.1691%
17
Dex-Trade
LINK-USDT$23.79
0.0064985 Eth
$2,315,859.00
97,346.750 LINK
1.0530%
18
Bitvavo
LINK-EUR$23.76
0.0064817 Eth
$2,087,407.00
87,845.277 LINK
0.9503%
19
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.85
0.0065049 Eth
$2,054,580.00
86,969.202 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.9408%
20
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.73
0.0064815 Eth
$2,010,935.00
85,470.551 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.9246%
21
Dcoin
LINK-USDT$23.81
0.0065023 Eth
$1,988,142.00
83,499.000 LINK
0.9032%
22
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.76
0.0064814 Eth
$1,857,915.00
78,822.915 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.8527%
23
CoinEx
LINK-USDT$23.79
0.0064984 Eth
$1,722,972.00
73,888.788 LINK
0.7993%
24
KuCoin
LINK-USDT$23.79
0.0064984 Eth
$1,652,139.00
69,444.988 LINK
0.7512%
25
tanX
LINK-USDC$23.80
0.0064954 Eth
$1,175,657.00
50,281.240 LINK
0.5439%
26
PointPay
LINK-USDT$23.74
0.0064753 Eth
$1,133,682.00
48,484.453 LINK
0.5245%
27
Gemini
LINK-USD$23.81
0.0065033 Eth
$1,044,971.00
43,892.380 LINK
0.4748%
28
EXMO
LINK-USDT$23.82
0.0065030 Eth
$1,026,020.00
43,081.978 LINK
0.4660%
29
Azbit
LINK-ETH$23.80
0.0064911 Eth
$1,017,767.00
43,124.605 LINK
0.4665%
30
Coinbase Exchange
LINK-EUR$23.79
0.0064923 Eth
$941,723.00
39,590.630 LINK
0.4283%
31
WhiteBIT
LINK-BTC$23.82
0.0065036 Eth
$938,923.00
39,420.800 LINK
0.4264%
32
Trubit
LINK-USDT$23.81
0.0064933 Eth
$934,039.00
40,029.200 LINK
0.4330%
33
WhiteBIT
LINK-TRY$23.83
0.0065058 Eth
$901,397.00
37,832.870 LINK
0.4093%
34
Bybit
LINK-USDC$23.79
0.0064992 Eth
$858,572.00
36,686.030 LINK
0.3968%
35
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.80
0.0064961 Eth
$784,640.00
33,239.980 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.3596%
36
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.66
0.0064613 Eth
$753,083.00
49,256.708 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.5328%
37
Bitstamp
LINK-EUR$23.77
0.0064911 Eth
$654,699.00
27,547.858 LINK
0.2980%
38
Bitbank
LINK-JPY$23.75
0.0064883 Eth
$602,830.00
25,378.417 LINK
0.2745%
39
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.70
0.0064717 Eth
$590,634.00
25,069.309 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.2712%
40
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.80
0.0064953 Eth
$551,379.00
23,289.118 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2519%
41
EarnBIT
LINK-USDT$23.82
0.0064992 Eth
$546,580.00
23,355.248 LINK
0.2526%
42
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.80
0.0064965 Eth
$506,195.00
21,498.689 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.2326%
43
Bitstamp
LINK-USD$23.82
0.0065059 Eth
$478,290.00
20,079.349 LINK
0.2172%
44
Bitbegin
LINK-USDT$23.81
0.0065040 Eth
$446,510.00
19,114.067 LINK
0.2068%
45
BigONE
LINK-USDT$23.71
0.0064727 Eth
$441,641.00
18,629.780 LINK
0.2015%
46
Coinbase Exchange
LINK-GBP$23.78
0.0064893 Eth
$391,481.00
16,465.540 LINK
0.1781%
47
HashKey Exchange
LINK-USD$23.73
0.0064718 Eth
$350,826.00
15,035.297 LINK
0.1626%
48
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.82
0.0065020 Eth
$335,779.00
330,134.356 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
3.5712%
49
Coinbase Exchange
LINK-ETH$23.74
0.0064786 Eth
$325,067.00
13,694.740 LINK
0.1481%
50
WhiteBIT
LINK-EUR$23.78
0.0064939 Eth
$307,733.00
12,939.530 LINK
0.1400%
51
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.79
0.0064893 Eth
$300,367.00
12,812.075 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1386%
52
Coinbase Exchange
LINK-BTC$23.81
0.0065012 Eth
$293,661.00
12,335.380 LINK
0.1334%
53
Slex
LINK-ETH$23.79
0.0064981 Eth
$279,652.00
11,870.290 LINK
0.1284%
54
BitMart
LINK-BTC$23.80
0.0065014 Eth
$266,184.00
11,184.040 LINK
0.1210%
55
OKX
LINK-USDC$23.78
0.0064963 Eth
$263,681.00
11,285.785 LINK
0.1221%
56
GMO Japan
LINK-JPY$23.66
0.0064592 Eth
$252,932.00
10,692.300 LINK
0.1157%
57
Bitci TR
LINK-TRY$23.61
0.0064491 Eth
$239,891.00
10,249.650 LINK
0.1109%
58
BitDelta
LINK-USDT$23.77
0.0064850 Eth
$215,580.00
9,232.000 LINK
0.0999%
59
Coinone
LINK-KRW$23.85
0.0065150 Eth
$186,739.00
7,828.657 LINK
0.0847%
60
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.64
0.0064553 Eth
$143,927.00
6,110.231 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0661%
61
LATOKEN
LINK-BTC$23.79
0.0064994 Eth
$124,173.00
5,218.856 LINK
0.0565%
62
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.82
0.0065020 Eth
$106,993.00
4,515.002 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0488%
63
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.84
0.0065067 Eth
$103,391.00
4,372.463 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0473%
64
Bitkub
LINK-THB$23.65
0.0064607 Eth
$102,110.00
4,317.264 LINK
0.0467%
65
Kanga
LINK-PLN$23.80
0.0065046 Eth
$90,783.00
0.000 LINK
0.0000%
66
BitMart
LINK-ETH$23.78
0.0064967 Eth
$87,142.00
3,664.000 LINK
0.0396%
67
Hotcoin
LINK-BTC$23.69
0.0064675 Eth
$85,104.00
3,592.990 LINK
0.0389%
68
Bitso
LINK-USD$23.83
0.0065001 Eth
$79,704.00
3,345.119 LINK
0.0362%
69
Nonkyc.io
LINK-BTC$23.89
0.0065160 Eth
$76,949.00
3,268.622 LINK
0.0354%
70
EXMO
LINK-BTC$23.97
0.0065473 Eth
$69,507.00
2,899.924 LINK
0.0314%
71
Gemini
LINK-BTC$23.71
0.0064763 Eth
$61,799.00
2,606.624 LINK
0.0282%
72
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.85
0.0065049 Eth
$58,412.00
57,257.971 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.6194%
73
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.71
0.0064661 Eth
$56,402.00
2,389.397 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0258%
74
Binance US
LINK-USDT$23.75
0.0064807 Eth
$46,636.00
1,963.519 LINK
0.0212%
75
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$23.70
0.0064638 Eth
$37,405.00
47.757 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0005%
76
Bitexen
LINK-TRY$23.46
0.0064048 Eth
$32,495.00
1,385.265 LINK
0.0150%
77
CoinEx
LINK-USDC$23.71
0.0064680 Eth
$31,169.00
1,372.209 LINK
0.0148%
78
Hotcoin
LINK-ETH$23.76
0.0064833 Eth
$30,709.00
1,292.690 LINK
0.0140%
79
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$23.74
0.0064737 Eth
$27,438.00
1,214.774 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0131%
80
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$23.80
0.0064964 Eth
$24,068.00
1,029.265 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0111%
81
Korbit
LINK-KRW$23.83
0.0065094 Eth
$21,087.00
902.466 LINK
0.0098%
82
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$23.71
0.0064741 Eth
$18,158.28
777.212 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0084%
83
PancakeSwap V1 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.77
0.0064881 Eth
$16,142.56
764.527 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0083%
84
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.71
0.0064738 Eth
$15,000.67
636.872 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0069%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$23.72
0.0064730 Eth
$14,240.31
603.708 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0065%
86
Dex-Trade
LINK-ETH$23.76
0.0064934 Eth
$13,308.41
560.230 LINK
0.0061%
87
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$23.78
0.0064892 Eth
$10,820.90
454.054 0X5947BB275C521040051D82396192181B413227A3
0.0049%
88
Biswap V3
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.69
0.0064615 Eth
$9,716.11
412.589 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0045%
89
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$23.73
0.0064717 Eth
$7,640.29
326.633 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0035%
90
Binance US
LINK-BTC$23.76
0.0064801 Eth
$6,995.21
294.453 LINK
0.0032%
91
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.75
0.0064776 Eth
$6,375.10
6,283.730 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.0680%
92
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.75
0.0064782 Eth
$6,286.87
6,183.909 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0669%
93
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.73
0.0064717 Eth
$3,747.21
158.594 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0017%
94
Uniswap V3 (Ethereum)
0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.66
0.0064623 Eth
$2,888.43
8.291 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9
0.0001%
95
Ace
LINK-USDT$23.79
0.0064873 Eth
$2,727.57
116.620 LINK
0.0013%
96
CoinEx
LINK-BTC$23.76
0.0064877 Eth
$2,392.62
101.634 LINK
0.0011%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$23.74
0.0064726 Eth
$2,366.65
101.539 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0011%
98
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$23.85
0.0065043 Eth
$2,294.35
96.245 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0010%
99
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$23.80
0.0064903 Eth
$1,297.37
54.975 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0006%
100
Uniswap V3 (Optimism)
0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6$23.86
0.0065119 Eth
$887.72
871.232 0X0B2C639C533813F4AA9D7837CAF62653D097FF85
0.0094%

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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