ETH Price: $3,144.02 (-5.16%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

731,161 ( 0.034%)

Market

Price

$23.88 @ 0.007595 ETH (-5.76%)

Onchain Market Cap

$23,880,000,000.00

Circulating Supply Market Cap

$15,198,756,874.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
27.293 LINK

Value
$651.76 ( ~0.207301394578729 Eth) [0.0000%]
0x2DBF890DA45744181e933EFE7Cf047f221bFdfc3
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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 21609.09% |ETH 0.0003846 1874.78%

Market

Volume (24H):$1,539,209,265.00
Market Capitalization:$15,198,756,874.00
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
Coinbase Exchange
LINK-USD$23.94
0.0076154 Eth
$101,546,766.00
4,241,719.560 LINK
12.9573%
2
Bybit
LINK-USDT$23.94
0.0076158 Eth
$72,494,128.00
3,024,711.679 LINK
9.2397%
3
P2B
LINK-USDT$23.87
0.0076075 Eth
$38,638,078.00
1,618,915.840 LINK
4.9454%
4
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.00
0.0076463 Eth
$34,391,105.00
1,451,349.332 0X514910771AF9CA656AF840DFF83E8264ECF986CA
4.4335%
5
Gate.io
LINK-USDT$23.99
0.0076305 Eth
$32,071,093.00
1,347,280.760 LINK
4.1156%
6
OKX
LINK-USDT$23.98
0.0076292 Eth
$30,073,320.00
1,258,555.588 LINK
3.8446%
7
DigiFinex
LINK-USDT$24.02
0.0076429 Eth
$28,681,468.00
1,194,021.080 LINK
3.6474%
8
MEXC
LINK-USDT$24.11
0.0076840 Eth
$25,260,359.00
1,047,648.990 LINK
3.2003%
9
Slex
LINK-USDT$23.90
0.0076132 Eth
$23,783,612.00
980,547.760 LINK
2.9953%
10
Azbit
LINK-USDT$24.05
0.0076634 Eth
$22,574,176.00
946,453.373 LINK
2.8912%
11
XT.COM
LINK-USDT$24.07
0.0076742 Eth
$22,509,236.00
943,326.740 LINK
2.8816%
12
KuCoin
LINK-USDT$23.99
0.0076388 Eth
$20,507,068.00
854,892.829 LINK
2.6115%
13
Coinstore
LINK-USDT$23.88
0.0076209 Eth
$18,286,710.00
764,493.890 LINK
2.3353%
14
Binance
LINK-FDUSD$23.93
0.0076296 Eth
$18,243,459.00
758,321.630 LINK
2.3165%
15
Bitunix
LINK-USDT$24.02
0.0076471 Eth
$18,207,838.00
757,785.330 LINK
2.3148%
16
HTX
LINK-USDT$24.00
0.0076334 Eth
$16,508,190.00
688,440.299 LINK
2.1030%
17
Kraken
LINK-USD$23.88
0.0076035 Eth
$16,106,098.00
674,540.799 LINK
2.0605%
18
Binance
LINK-USDC$23.99
0.0076452 Eth
$15,851,664.00
663,620.540 LINK
2.0272%
19
WhiteBIT
LINK-USDT$23.87
0.0076519 Eth
$13,389,870.00
560,955.370 LINK
1.7136%
20
BYDFi
LINK-USDT$23.84
0.0076379 Eth
$12,638,133.00
530,170.050 LINK
1.6195%
21
LBank
LINK-USDT$23.93
0.0076246 Eth
$11,173,523.00
466,899.230 LINK
1.4263%
22
LATOKEN
LINK-USDT$23.72
0.0076213 Eth
$11,092,219.00
467,600.713 LINK
1.4284%
23
Hotcoin
LINK-USDT$24.00
0.0076448 Eth
$10,260,555.00
427,583.980 LINK
1.3062%
24
Bitget
LINK-USDT$24.03
0.0076444 Eth
$9,827,870.00
411,814.114 LINK
1.2580%
25
QMall
LINK-USDT$23.99
0.0076390 Eth
$9,371,586.00
392,971.925 LINK
1.2004%
26
BTSE
LINK-USDT$23.99
0.0076447 Eth
$8,986,958.00
374,544.924 LINK
1.1441%
27
Coinbase Exchange
LINK-EUR$23.96
0.0076322 Eth
$8,574,816.00
357,921.320 LINK
1.0934%
28
Bitvavo
LINK-EUR$24.01
0.0076486 Eth
$7,460,889.00
310,784.519 LINK
0.9494%
29
Dex-Trade
LINK-USDT$23.93
0.0076225 Eth
$6,971,276.00
291,361.361 LINK
0.8900%
30
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.88
0.0075995 Eth
$5,714,507.00
239,912.466 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.7329%
31
FMCPAY
LINK-USDT$24.06
0.0076579 Eth
$5,650,666.00
233,294.244 LINK
0.7127%
32
CoinEx
LINK-USDT$23.70
0.0076257 Eth
$4,786,201.00
198,108.337 LINK
0.6052%
33
Coinbase Exchange
LINK-GBP$23.85
0.0075977 Eth
$3,778,570.00
158,450.220 LINK
0.4840%
34
PointPay
LINK-USDT$23.74
0.0076123 Eth
$3,527,746.00
147,467.279 LINK
0.4505%
35
Biconomy.com
LINK-USDT$23.99
0.0076418 Eth
$3,506,530.00
145,936.710 LINK
0.4458%
36
WhiteBIT
LINK-BTC$23.95
0.0076298 Eth
$2,931,729.00
122,412.340 LINK
0.3739%
37
WhiteBIT
LINK-TRY$24.09
0.0076737 Eth
$2,816,691.00
116,929.440 LINK
0.3572%
38
Binance
LINK-ETH$23.99
0.0076365 Eth
$2,703,258.00
113,541.120 LINK
0.3468%
39
Bitbank
LINK-JPY$24.20
0.0077100 Eth
$2,682,098.00
110,817.718 LINK
0.3385%
40
Kraken
LINK-USDT$23.89
0.0076071 Eth
$2,623,026.00
109,802.998 LINK
0.3354%
41
Kraken
LINK-EUR$23.96
0.0076290 Eth
$2,533,333.00
105,744.773 LINK
0.3230%
42
Phemex
LINK-USDT$23.88
0.0076388 Eth
$2,204,063.00
92,282.920 LINK
0.2819%
43
BigONE
LINK-USDT$23.86
0.0076006 Eth
$1,973,960.00
82,744.780 LINK
0.2528%
44
FMCPAY
LINK-BTC$23.97
0.0076475 Eth
$1,913,285.00
79,033.000 LINK
0.2414%
45
FMCPAY
LINK-ETH$23.96
0.0076339 Eth
$1,886,481.00
79,236.480 LINK
0.2420%
46
BitStorage
LINK-USDT$24.02
0.0076412 Eth
$1,769,154.00
73,666.860 LINK
0.2250%
47
WhiteBIT
LINK-EUR$23.89
0.0076263 Eth
$1,639,391.00
68,620.980 LINK
0.2096%
48
OKX
LINK-USDC$23.90
0.0076032 Eth
$1,534,094.00
62,850.659 LINK
0.1920%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.06
0.0076724 Eth
$1,519,287.00
63,415.620 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1937%
50
EarnBIT
LINK-USDT$23.94
0.0076317 Eth
$1,448,448.00
60,477.410 LINK
0.1847%
51
Binance
LINK-TRY$24.05
0.0076564 Eth
$1,434,939.00
59,164.860 LINK
0.1807%
52
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.71
0.0075446 Eth
$1,387,205.00
57,918.284 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1769%
53
EXMO
LINK-USDT$23.96
0.0076301 Eth
$1,386,221.00
57,854.521 LINK
0.1767%
54
Binance
LINK-EUR$23.77
0.0076151 Eth
$1,333,199.00
55,419.530 LINK
0.1693%
55
Bybit
LINK-USDC$23.95
0.0076177 Eth
$1,298,016.00
54,295.933 LINK
0.1659%
56
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.88
0.0075977 Eth
$1,297,453.00
53,467.492 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1633%
57
tanX
LINK-USDC$24.02
0.0076597 Eth
$1,290,725.00
53,082.460 LINK
0.1622%
58
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.86
0.0075932 Eth
$1,255,322.00
52,814.420 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1613%
59
Gemini
LINK-USD$23.88
0.0075980 Eth
$1,254,978.00
52,553.827 LINK
0.1605%
60
QMall
LINK-USDC$23.98
0.0076295 Eth
$1,238,889.00
51,792.926 LINK
0.1582%
61
Nonkyc.io
LINK-USDT$23.99
0.0076383 Eth
$1,166,088.00
49,519.156 LINK
0.1513%
62
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.91
0.0076082 Eth
$1,067,764.00
44,921.458 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1372%
63
Trubit
LINK-USDT$23.93
0.0076289 Eth
$969,554.00
40,330.520 LINK
0.1232%
64
HashKey Exchange
LINK-USD$23.92
0.0076181 Eth
$946,387.00
39,324.108 LINK
0.1201%
65
itBit
LINK-USD$23.92
0.0076492 Eth
$910,720.00
38,073.571 LINK
0.1163%
66
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$24.06
0.0076724 Eth
$901,342.00
902,984.105 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.7584%
67
Coinbase Exchange
LINK-USDT$23.87
0.0076098 Eth
$898,024.00
37,627.239 LINK
0.1149%
68
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.86
0.0075904 Eth
$866,101.00
36,193.402 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1106%
69
XT.COM
LINK-ETH$24.05
0.0076574 Eth
$757,081.00
31,812.190 LINK
0.0972%
70
LATOKEN
LINK-BTC$24.06
0.0076686 Eth
$734,366.00
30,524.192 LINK
0.0932%
71
BitStorage
LINK-ETH$23.89
0.0076021 Eth
$625,254.00
26,169.160 LINK
0.0799%
72
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.92
0.0076276 Eth
$619,053.00
26,009.486 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0795%
73
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$24.06
0.0076724 Eth
$603,456.00
24,905.870 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0761%
74
Coinbase Exchange
LINK-BTC$23.88
0.0076080 Eth
$543,204.00
22,748.020 LINK
0.0695%
75
Coinbase Exchange
LINK-ETH$24.04
0.0076576 Eth
$531,409.00
22,107.970 LINK
0.0675%
76
Slex
LINK-ETH$23.88
0.0076031 Eth
$436,943.00
18,349.310 LINK
0.0561%
77
KuCoin
LINK-USDC$23.92
0.0076168 Eth
$430,926.00
18,016.100 LINK
0.0550%
78
Kraken
LINK-GBP$23.99
0.0076382 Eth
$412,789.00
17,209.519 LINK
0.0526%
79
Hotcoin
LINK-BTC$23.87
0.0076103 Eth
$411,801.00
17,251.970 LINK
0.0527%
80
Binance
LINK-BNB$23.69
0.0075954 Eth
$411,708.00
16,676.869 LINK
0.0509%
81
BitDelta
LINK-USDT$23.72
0.0076102 Eth
$401,000.00
16,728.000 LINK
0.0511%
82
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.97
0.0076356 Eth
$361,747.00
14,881.654 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0455%
83
BYDFi
LINK-USDC$23.86
0.0076082 Eth
$340,376.00
14,264.850 LINK
0.0436%
84
Bitkub
LINK-THB$24.19
0.0077070 Eth
$309,212.00
12,780.750 LINK
0.0390%
85
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.00
0.0076463 Eth
$308,150.00
12,772.547 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0390%
86
Mercado Bitcoin
LINK-BRL$23.97
0.0076416 Eth
$303,373.00
12,658.348 LINK
0.0387%
87
BitMart
LINK-BTC$23.86
0.0076087 Eth
$281,917.00
11,813.160 LINK
0.0361%
88
PointPay
LINK-BTC$23.96
0.0076402 Eth
$278,347.00
11,570.958 LINK
0.0353%
89
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.98
0.0076436 Eth
$273,689.00
11,512.096 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0352%
90
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.88
0.0075995 Eth
$259,441.00
260,495.727 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.7957%
91
KuCoin
LINK-BTC$23.86
0.0075969 Eth
$251,292.00
10,533.598 LINK
0.0322%
92
Dex-Trade
LINK-BTC$24.08
0.0076662 Eth
$233,315.00
9,687.700 LINK
0.0296%
93
Uniswap V2 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.84
0.0075959 Eth
$215,669.00
9,127.672 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0279%
94
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.97
0.0076419 Eth
$212,819.00
8,912.081 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0272%
95
Bitso
LINK-USD$24.03
0.0076559 Eth
$195,435.00
8,132.407 LINK
0.0248%
96
Binance US
LINK-USDT$23.76
0.0075747 Eth
$178,542.00
7,514.361 LINK
0.0230%
97
Foxbit
LINK-BRL$23.83
0.0075930 Eth
$141,763.00
5,937.238 LINK
0.0181%
98
CoinTR
LINK-TRY$24.00
0.0076601 Eth
$140,684.00
5,841.030 LINK
0.0178%
99
BitMart
LINK-ETH$23.84
0.0076005 Eth
$102,473.00
4,298.520 LINK
0.0131%
100
Dex-Trade
LINK-ETH$24.06
0.0076572 Eth
$85,011.00
3,534.010 LINK
0.0108%

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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