ETH Price: $2,523.67 (+2.05%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

722,355 ( 0.007%)

Market

Price

$11.11 @ 0.004402 ETH (+2.08%)

Onchain Market Cap

$11,110,000,000.00

Circulating Supply Market Cap

$6,963,022,642.00

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
Bittrex
Balance
0 LINK

Value
$0.00
0xfbb1b73c4f0bda4f67dca266ce6ef42f520fbb98
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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 10000% |ETH 0.0003846 1044.57%

Market

Volume (24H):$304,199,779.00
Market Capitalization:$6,963,022,642.00
Circulating Supply:626,849,971.00 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$11.11
0.0043982 Eth
$17,846,591.00
1,627,434.430 LINK
10.9953%
2
WhiteBIT
LINK-USDT$11.10
0.0043974 Eth
$17,360,436.00
1,563,541.820 LINK
10.5636%
3
HTX
LINK-USDT$11.10
0.0043944 Eth
$9,930,860.00
905,664.284 LINK
6.1188%
4
CoinTR
LINK-USDT$11.11
0.0044001 Eth
$9,871,029.00
899,563.030 LINK
6.0776%
5
Coinbase Exchange
LINK-USD$11.08
0.0043857 Eth
$9,608,974.00
867,470.790 LINK
5.8608%
6
Bitget
LINK-USDT$11.10
0.0043956 Eth
$8,368,103.00
762,598.335 LINK
5.1523%
7
Bybit
LINK-USDT$11.10
0.0043958 Eth
$6,064,810.00
552,405.739 LINK
3.7322%
8
P2B
LINK-USDT$11.11
0.0043984 Eth
$3,793,953.00
341,515.530 LINK
2.3073%
9
Azbit
LINK-USDT$11.10
0.0043969 Eth
$3,793,512.00
345,999.340 LINK
2.3376%
10
WEEX
LINK-USDT$11.10
0.0043940 Eth
$3,673,584.00
334,820.200 LINK
2.2621%
11
Poloniex
LINK-USDT$11.10
0.0043958 Eth
$3,583,498.00
326,346.224 LINK
2.2049%
12
BVOX
LINK-USDT$11.10
0.0043962 Eth
$3,557,690.00
324,389.170 LINK
2.1916%
13
Upbit
LINK-KRW$11.18
0.0044277 Eth
$3,436,084.00
307,264.791 LINK
2.0759%
14
BTSE
LINK-USDT$11.10
0.0043952 Eth
$3,421,182.00
308,270.490 LINK
2.0827%
15
OKX
LINK-USDT$11.10
0.0043953 Eth
$3,223,236.00
294,285.319 LINK
1.9883%
16
Ourbit
LINK-USDT$11.10
0.0043960 Eth
$3,164,981.00
288,550.270 LINK
1.9495%
17
Slex
LINK-USDT$11.11
0.0044006 Eth
$3,075,087.00
280,261.700 LINK
1.8935%
18
Biconomy.com
LINK-USDT$11.10
0.0043957 Eth
$3,056,807.00
278,759.740 LINK
1.8834%
19
Trubit
LINK-USDT$11.09
0.0043938 Eth
$2,863,490.00
260,740.610 LINK
1.7616%
20
DigiFinex
LINK-USDT$11.10
0.0043948 Eth
$2,402,775.00
216,472.560 LINK
1.4625%
21
CoinW
LINK-USDT$11.11
0.0043985 Eth
$1,925,404.00
173,348.980 LINK
1.1712%
22
KuCoin
LINK-USDT$11.10
0.0043941 Eth
$1,921,702.00
173,160.501 LINK
1.1699%
23
Deepcoin
LINK-USDT$11.12
0.0044017 Eth
$1,859,214.00
168,411.660 LINK
1.1378%
24
XT.COM
LINK-USDT$11.10
0.0043939 Eth
$1,782,837.00
162,566.810 LINK
1.0983%
25
C-Patex
LINK-USDT$11.10
0.0043932 Eth
$1,766,263.00
159,179.195 LINK
1.0754%
26
AscendEX (BitMax)
LINK-USDT$11.08
0.0043899 Eth
$1,750,429.00
157,913.300 LINK
1.0669%
27
LBank
LINK-USDT$11.10
0.0043955 Eth
$1,667,780.00
150,271.050 LINK
1.0153%
28
Hotcoin
LINK-USDT$11.10
0.0043960 Eth
$1,645,406.00
148,221.390 LINK
1.0014%
29
Bitunix
LINK-USDT$11.11
0.0043997 Eth
$1,552,383.00
139,750.740 LINK
0.9442%
30
Toobit
LINK-USDT$11.08
0.0043847 Eth
$1,449,309.00
132,191.850 LINK
0.8931%
31
Kraken
LINK-USD$11.10
0.0043938 Eth
$1,353,307.00
121,951.433 LINK
0.8239%
32
Niza Global
LINK-USD$11.10
0.0043941 Eth
$1,339,547.00
121,963.231 LINK
0.8240%
33
Coinstore
LINK-USDT$11.09
0.0043918 Eth
$1,293,406.00
117,973.130 LINK
0.7971%
34
Crypto.com Exchange
LINK-USDT$11.10
0.0043965 Eth
$1,228,884.00
110,670.910 LINK
0.7477%
35
Binance
LINK-BTC$11.08
0.0043882 Eth
$1,178,426.00
106,537.500 LINK
0.7198%
36
Oceanex
LINK-USDT$11.09
0.0043893 Eth
$1,100,356.00
99,254.710 LINK
0.6706%
37
HashKey Global
LINK-USDT$11.11
0.0043993 Eth
$1,097,860.00
101,645.715 LINK
0.6867%
38
BYDFi
LINK-USDT$11.10
0.0043946 Eth
$868,563.00
78,257.220 LINK
0.5287%
39
MEXC
LINK-USDT$11.10
0.0043940 Eth
$847,426.00
76,360.680 LINK
0.5159%
40
Gate.io
LINK-USDT$11.10
0.0043953 Eth
$802,925.00
73,284.830 LINK
0.4951%
41
WhiteBIT
LINK-BTC$11.09
0.0043918 Eth
$755,846.00
68,146.900 LINK
0.4604%
42
Crypto.com Exchange
LINK-USD$11.10
0.0043961 Eth
$753,027.00
67,821.960 LINK
0.4582%
43
Azbit
LINK-ETH$11.10
0.0043941 Eth
$739,943.00
66,736.103 LINK
0.4509%
44
Bitvavo
LINK-EUR$11.10
0.0043942 Eth
$725,302.00
65,369.507 LINK
0.4416%
45
FameEX
LINK-USDT$11.10
0.0043977 Eth
$711,872.00
64,896.800 LINK
0.4385%
46
CoinEx
LINK-USDT$11.09
0.0043910 Eth
$630,286.00
57,481.440 LINK
0.3884%
47
Dex-Trade
LINK-USDT$11.11
0.0043982 Eth
$607,294.00
54,672.662 LINK
0.3694%
48
FMCPAY
LINK-BTC$11.10
0.0043931 Eth
$533,707.00
48,055.200 LINK
0.3247%
49
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$11.08
0.0043852 Eth
$361,305.00
32,672.989 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2207%
50
Niza Global
LINK-EUR$11.09
0.0043929 Eth
$347,456.00
31,531.391 LINK
0.2130%
51
LATOKEN
LINK-USDT$11.10
0.0043952 Eth
$337,854.00
30,435.435 LINK
0.2056%
52
PointPay
LINK-USDT$11.10
0.0043960 Eth
$298,183.00
27,175.792 LINK
0.1836%
53
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$11.10
0.0043951 Eth
$294,088.00
26,981.333 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1823%
54
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$11.08
0.0043852 Eth
$289,335.00
26,199.443 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1770%
55
BigONE
LINK-USDT$11.08
0.0043872 Eth
$285,857.00
25,790.220 LINK
0.1742%
56
Pionex
LINK-USDT$11.09
0.0043925 Eth
$245,399.00
22,372.920 LINK
0.1512%
57
LATOKEN
LINK-BTC$11.10
0.0043982 Eth
$242,053.00
21,798.351 LINK
0.1473%
58
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$11.10
0.0043963 Eth
$221,005.00
19,932.954 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1347%
59
WhiteBIT
LINK-EUR$11.12
0.0044046 Eth
$212,238.00
19,085.810 LINK
0.1289%
60
BitMart
LINK-BTC$11.11
0.0043970 Eth
$193,459.00
17,419.760 LINK
0.1177%
61
Phemex
LINK-USDT$11.11
0.0043991 Eth
$183,038.00
16,477.990 LINK
0.1113%
62
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$11.06
0.0043802 Eth
$178,409.00
16,135.275 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1090%
63
Hotcoin
LINK-BTC$11.08
0.0043890 Eth
$163,274.00
14,733.710 LINK
0.0995%
64
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$11.13
0.0044067 Eth
$151,430.00
13,796.964 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0932%
65
WhiteBIT
LINK-TRY$11.16
0.0044185 Eth
$144,458.00
12,947.780 LINK
0.0875%
66
BitDelta
LINK-USDT$11.10
0.0043952 Eth
$126,866.00
11,570.000 LINK
0.0782%
67
Hotcoin
LINK-ETH$11.10
0.0043962 Eth
$126,441.00
11,387.780 LINK
0.0769%
68
Coinbase Exchange
LINK-GBP$11.11
0.0043989 Eth
$98,333.00
8,853.070 LINK
0.0598%
69
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$11.11
0.0043991 Eth
$91,386.00
8,303.986 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0561%
70
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$11.06
0.0043802 Eth
$81,617.00
80,961.777 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.5470%
71
Slex
LINK-BTC$11.11
0.0044007 Eth
$69,919.00
6,313.500 LINK
0.0427%
72
Slex
LINK-ETH$11.11
0.0043987 Eth
$62,302.00
5,609.690 LINK
0.0379%
73
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$11.08
0.0043869 Eth
$61,928.00
61,283.752 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.4140%
74
OKX
LINK-USDC$11.06
0.0043792 Eth
$59,215.00
5,402.050 LINK
0.0365%
75
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$11.11
0.0043990 Eth
$47,438.00
4,338.225 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0293%
76
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$11.06
0.0043802 Eth
$45,531.00
4,138.078 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0280%
77
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$11.10
0.0043963 Eth
$25,124.00
24,868.289 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.1680%
78
Binance US
LINK-USDT$11.09
0.0043918 Eth
$24,216.00
2,183.980 LINK
0.0148%
79
EXMO
LINK-BTC$11.03
0.0043672 Eth
$24,106.00
2,186.267 LINK
0.0148%
80
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$11.04
0.0043719 Eth
$22,115.00
2,017.741 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0136%
81
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$11.05
0.0043751 Eth
$21,848.00
1,976.071 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0134%
82
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$11.07
0.0043847 Eth
$21,042.00
20,980.058 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.1417%
83
Pangolin
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$11.07
0.0043849 Eth
$19,607.11
1,826.428 0X5947BB275C521040051D82396192181B413227A3
0.0123%
84
Nonkyc.io
LINK-BTC$11.06
0.0043814 Eth
$18,536.24
1,669.912 LINK
0.0113%
85
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$11.05
0.0043739 Eth
$17,391.86
1,619.176 0X5947BB275C521040051D82396192181B413227A3
0.0109%
86
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$11.11
0.0043983 Eth
$12,618.22
1,135.800 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0077%
87
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$11.11
0.0043996 Eth
$12,400.85
1,134.666 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0077%
88
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$11.11
0.0043997 Eth
$12,316.51
18.757 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0001%
89
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$11.08
0.0043859 Eth
$8,581.28
778.970 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0053%
90
CoinEx
LINK-BTC$11.05
0.0043763 Eth
$7,218.49
652.202 LINK
0.0044%
91
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$11.07
0.0043823 Eth
$6,571.66
592.836 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0040%
92
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$11.09
0.0043936 Eth
$6,554.48
599.878 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0041%
93
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$11.06
0.0043806 Eth
$4,075.87
371.620 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0025%
94
CoinEx
LINK-USDC$11.09
0.0043911 Eth
$2,232.44
203.871 LINK
0.0014%
95
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$11.13
0.0044041 Eth
$1,382.55
123.262 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0008%
96
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$11.08
0.0043857 Eth
$785.01
71.220 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0005%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X61299774020DA444AF134C82FA83E3810B309991$11.12
0.0044030 Eth
$665.31
60.413 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0004%
98
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X7130D2A12B9BCBFAE4F2634D864A1EE1CE3EAD9C$11.11
0.0044004 Eth
$269.41
24.539 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0002%
99
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063$11.08
0.0043868 Eth
$230.28
20.980 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0001%
100
CEX.IO
LINK-USDT$11.10
0.0043973 Eth
$18.43
1.678 LINK
0.0000%

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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