ETH Price: $3,321.49 (+1.53%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

732,426 ( 0.025%)

Market

Price

$25.13 @ 0.007566 ETH (+1.96%)

Onchain Market Cap

$25,130,000,000.00

Circulating Supply Market Cap

$16,070,052,026.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
75.731124 LINK

Value
$1,903.12 ( ~0.572971858565226 Eth) [0.0000%]
0x374a0e3aF690E6626574f17EA9A57F6dcCDAffEF
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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 22745.45% |ETH 0.0003846 1867.24%

Market

Volume (24H):$959,663,930.00
Market Capitalization:$16,070,052,026.00
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$25.06
0.0075391 Eth
$130,736,992.00
5,175,853.230 LINK
22.8619%
2
Coinbase Exchange
LINK-USD$24.85
0.0074842 Eth
$54,672,008.00
2,199,726.710 LINK
9.7162%
3
Bybit
LINK-USDT$24.87
0.0074963 Eth
$44,141,222.00
1,748,019.645 LINK
7.7210%
4
P2B
LINK-USDT$25.02
0.0075153 Eth
$26,881,227.00
1,074,339.300 LINK
4.7454%
5
OKX
LINK-USDT$24.90
0.0075039 Eth
$21,209,525.00
836,195.318 LINK
3.6935%
6
Gate.io
LINK-USDT$24.87
0.0074970 Eth
$17,935,996.00
710,268.560 LINK
3.1373%
7
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$25.09
0.0075608 Eth
$17,414,328.00
686,750.548 0X514910771AF9CA656AF840DFF83E8264ECF986CA
3.0334%
8
DigiFinex
LINK-USDT$24.88
0.0074980 Eth
$16,849,846.00
677,302.660 LINK
2.9917%
9
MEXC
LINK-USDT$25.04
0.0075278 Eth
$14,053,153.00
561,207.940 LINK
2.4789%
10
XT.COM
LINK-USDT$25.14
0.0075809 Eth
$13,073,314.00
517,170.300 LINK
2.2844%
11
Azbit
LINK-USDT$24.96
0.0075183 Eth
$12,960,273.00
512,525.470 LINK
2.2638%
12
HTX
LINK-USDT$24.86
0.0074926 Eth
$12,120,386.00
484,802.648 LINK
2.1414%
13
Coinstore
LINK-USDT$25.03
0.0075163 Eth
$11,164,671.00
442,211.350 LINK
1.9533%
14
Bitunix
LINK-USDT$24.89
0.0074917 Eth
$10,160,825.00
408,289.830 LINK
1.8034%
15
Binance
LINK-USDC$24.88
0.0074954 Eth
$9,625,761.00
381,922.790 LINK
1.6870%
16
CoinW
LINK-USDT$24.95
0.0074939 Eth
$8,367,523.00
335,392.830 LINK
1.4814%
17
Binance
LINK-FDUSD$25.22
0.0075805 Eth
$8,350,208.00
330,771.340 LINK
1.4610%
18
KuCoin
LINK-USDT$24.88
0.0074987 Eth
$8,243,628.00
331,333.312 LINK
1.4635%
19
BYDFi
LINK-USDT$25.04
0.0075300 Eth
$7,238,812.00
289,066.060 LINK
1.2768%
20
LATOKEN
LINK-USDT$24.93
0.0075109 Eth
$6,479,162.00
259,846.659 LINK
1.1477%
21
LBank
LINK-USDT$25.13
0.0075783 Eth
$6,366,220.00
253,345.820 LINK
1.1190%
22
Kraken
LINK-USD$24.87
0.0074944 Eth
$6,086,722.00
244,741.517 LINK
1.0810%
23
BTSE
LINK-USDT$25.05
0.0075253 Eth
$5,899,999.00
235,516.763 LINK
1.0403%
24
QMall
LINK-USDT$24.90
0.0074989 Eth
$5,409,059.00
213,799.898 LINK
0.9444%
25
Hotcoin
LINK-USDT$24.85
0.0074883 Eth
$5,398,541.00
217,248.796 LINK
0.9596%
26
Bitvavo
LINK-EUR$24.90
0.0075009 Eth
$5,337,766.00
214,331.114 LINK
0.9467%
27
Dex-Trade
LINK-USDT$24.90
0.0074932 Eth
$4,025,168.00
161,677.450 LINK
0.7141%
28
Coinbase Exchange
LINK-EUR$24.92
0.0074991 Eth
$3,999,440.00
160,518.830 LINK
0.7090%
29
FMCPAY
LINK-USDT$24.91
0.0075015 Eth
$3,985,451.00
158,662.570 LINK
0.7008%
30
CoinEx
LINK-USDT$24.92
0.0075050 Eth
$3,227,082.00
127,524.740 LINK
0.5633%
31
Biconomy.com
LINK-USDT$24.97
0.0074993 Eth
$2,585,699.00
102,692.450 LINK
0.4536%
32
PointPay
LINK-USDT$24.85
0.0074873 Eth
$2,165,127.00
85,622.146 LINK
0.3782%
33
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$24.90
0.0075054 Eth
$1,912,232.00
75,764.105 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3347%
34
FMCPAY
LINK-ETH$25.09
0.0075782 Eth
$1,785,104.00
70,776.480 LINK
0.3126%
35
Coinbase Exchange
LINK-GBP$24.88
0.0074871 Eth
$1,708,543.00
68,682.930 LINK
0.3034%
36
FMCPAY
LINK-BTC$25.10
0.0075820 Eth
$1,623,760.00
66,308.300 LINK
0.2929%
37
Phemex
LINK-USDT$24.97
0.0075006 Eth
$1,453,777.00
58,218.820 LINK
0.2572%
38
EXMO
LINK-USDT$24.91
0.0075053 Eth
$1,377,550.00
55,309.609 LINK
0.2443%
39
Binance
LINK-TRY$25.26
0.0075916 Eth
$1,362,461.00
53,975.450 LINK
0.2384%
40
Bybit
LINK-USDC$24.91
0.0075074 Eth
$1,188,344.00
46,887.535 LINK
0.2071%
41
Binance
LINK-ETH$24.89
0.0075020 Eth
$1,056,565.00
41,794.940 LINK
0.1846%
42
BitStorage
LINK-USDT$24.91
0.0074996 Eth
$1,039,678.00
41,745.510 LINK
0.1844%
43
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.09
0.0075371 Eth
$1,032,252.00
40,601.492 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1793%
44
Kraken
LINK-USDT$24.89
0.0075010 Eth
$1,004,356.00
40,348.583 LINK
0.1782%
45
EarnBIT
LINK-USDT$24.80
0.0074751 Eth
$989,713.00
39,147.144 LINK
0.1729%
46
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.07
0.0075300 Eth
$950,710.00
37,331.616 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1649%
47
Trubit
LINK-USDT$24.87
0.0074963 Eth
$880,357.00
35,226.120 LINK
0.1556%
48
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$25.02
0.0075404 Eth
$870,806.00
71,878.874 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3175%
49
Bitbank
LINK-JPY$25.11
0.0075568 Eth
$865,766.00
34,482.295 LINK
0.1523%
50
Binance
LINK-EUR$24.87
0.0074969 Eth
$846,833.00
33,515.280 LINK
0.1480%
51
Coinbase Exchange
LINK-USDT$24.93
0.0075107 Eth
$846,747.00
33,959.612 LINK
0.1500%
52
BigONE
LINK-USDT$24.93
0.0075085 Eth
$795,859.00
31,927.890 LINK
0.1410%
53
QMall
LINK-USDC$24.87
0.0074920 Eth
$779,318.00
30,840.544 LINK
0.1362%
54
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.03
0.0075174 Eth
$754,056.00
29,988.748 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1325%
55
itBit
LINK-USD$24.89
0.0074913 Eth
$740,391.00
29,746.536 LINK
0.1314%
56
Gemini
LINK-USD$24.87
0.0074967 Eth
$738,047.00
29,672.117 LINK
0.1311%
57
OKX
LINK-USDC$24.88
0.0074985 Eth
$735,408.00
29,092.672 LINK
0.1285%
58
WhiteBIT
LINK-TRY$25.09
0.0075863 Eth
$731,324.00
29,152.630 LINK
0.1288%
59
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.02
0.0075382 Eth
$718,461.00
28,171.026 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1244%
60
HashKey Exchange
LINK-USD$24.91
0.0075043 Eth
$672,373.00
26,806.450 LINK
0.1184%
61
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$24.74
0.0074564 Eth
$614,109.00
24,557.742 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1085%
62
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$25.03
0.0075197 Eth
$599,816.00
24,061.435 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1063%
63
LATOKEN
LINK-BTC$24.92
0.0075058 Eth
$590,278.00
23,689.176 LINK
0.1046%
64
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$25.07
0.0075300 Eth
$550,131.00
553,934.873 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.4467%
65
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$25.00
0.0075108 Eth
$504,539.00
20,083.078 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0887%
66
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.99
0.0075050 Eth
$479,442.00
18,926.699 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0836%
67
BitDelta
LINK-USDT$24.95
0.0074946 Eth
$463,766.00
18,389.000 LINK
0.0812%
68
GMO Japan
LINK-JPY$25.18
0.0075614 Eth
$401,145.00
15,929.600 LINK
0.0704%
69
Coinbase Exchange
LINK-BTC$24.90
0.0074993 Eth
$399,298.00
16,033.260 LINK
0.0708%
70
Coinbase Exchange
LINK-ETH$24.87
0.0074966 Eth
$383,158.00
15,404.450 LINK
0.0680%
71
WhiteBIT
LINK-BTC$25.02
0.0075153 Eth
$356,921.00
14,266.590 LINK
0.0630%
72
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.82
0.0074803 Eth
$324,366.00
12,887.332 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0569%
73
Kraken
LINK-GBP$24.88
0.0074988 Eth
$302,122.00
12,140.970 LINK
0.0536%
74
BitMart
LINK-BTC$24.89
0.0075030 Eth
$280,888.00
11,283.280 LINK
0.0498%
75
bitcastle
LINK-USDT$24.86
0.0074903 Eth
$262,675.00
10,412.500 LINK
0.0460%
76
Bitci TR
LINK-TRY$24.83
0.0074836 Eth
$253,091.00
10,135.770 LINK
0.0448%
77
Slex
LINK-ETH$24.93
0.0075095 Eth
$247,154.00
9,795.550 LINK
0.0433%
78
BitStorage
LINK-ETH$24.95
0.0075093 Eth
$245,578.00
9,843.000 LINK
0.0435%
79
PointPay
LINK-BTC$24.88
0.0074938 Eth
$233,883.00
9,432.955 LINK
0.0417%
80
WhiteBIT
LINK-EUR$24.93
0.0074883 Eth
$233,593.00
9,370.720 LINK
0.0414%
81
Bitkub
LINK-THB$25.08
0.0075295 Eth
$214,824.00
8,566.875 LINK
0.0378%
82
Binance US
LINK-USDT$24.95
0.0075144 Eth
$193,173.00
7,743.530 LINK
0.0342%
83
Hotcoin
LINK-BTC$24.88
0.0074987 Eth
$190,429.00
7,654.280 LINK
0.0338%
84
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$25.02
0.0075404 Eth
$188,813.00
7,531.084 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0333%
85
Nonkyc.io
LINK-BTC$25.50
0.0075624 Eth
$179,468.00
7,099.922 LINK
0.0314%
86
BYDFi
LINK-USDC$24.85
0.0074895 Eth
$157,057.00
6,320.320 LINK
0.0279%
87
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$25.12
0.0075651 Eth
$151,962.00
6,005.293 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0265%
88
Bitso
LINK-USD$24.90
0.0075029 Eth
$149,782.00
6,015.829 LINK
0.0266%
89
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$25.14
0.0075520 Eth
$142,799.00
5,587.947 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0247%
90
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$24.90
0.0075054 Eth
$130,127.00
130,892.238 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5782%
91
Mercado Bitcoin
LINK-BRL$24.92
0.0075028 Eth
$128,834.00
5,170.785 LINK
0.0228%
92
CoinTR
LINK-TRY$24.90
0.0075011 Eth
$126,380.00
5,061.840 LINK
0.0224%
93
KuCoin
LINK-USDC$24.89
0.0075013 Eth
$108,810.00
4,371.856 LINK
0.0193%
94
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$24.87
0.0074966 Eth
$103,790.00
104,763.912 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.4627%
95
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$24.99
0.0075316 Eth
$103,444.00
4,208.151 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0186%
96
Uniswap V3 (Ethereum)
0XA95C5EBB86E0DE73B4FB8C47A45B792CFEA28C23-0X514910771AF9CA656AF840DFF83E8264ECF986CA$25.08
0.0075326 Eth
$86,653.00
123,179.817 0XA95C5EBB86E0DE73B4FB8C47A45B792CFEA28C23
0.5441%
97
BitMart
LINK-ETH$24.90
0.0075060 Eth
$82,949.00
3,330.700 LINK
0.0147%
98
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.00
0.0075326 Eth
$69,729.00
2,773.111 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0122%
99
zondacrypto
LINK-PLN$25.00
0.0075121 Eth
$38,200.00
1,528.305 LINK
0.0068%
100
Dex-Trade
LINK-ETH$25.15
0.0075590 Eth
$32,063.00
1,274.800 LINK
0.0056%

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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