ETH Price: $3,335.18 (-3.82%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

727,699 ( 0.042%)

Market

Price

$22.76 @ 0.006824 ETH (-6.88%)

Onchain Market Cap

$22,760,000,000.00

Circulating Supply Market Cap

$14,364,512,760.00

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
Binance Dep: 0x665a3020fFc4DA682850e6aa3a856eE59864f75f
Balance
0 LINK

Value
$0.00
0x665a3020ffc4da682850e6aa3a856ee59864f75f
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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 20590.91% |ETH 0.0003846 1674.31%

Market

Volume (24H):$978,009,468.00
Market Capitalization:$14,364,512,760.00
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
WhiteBIT
LINK-USDT$22.75
0.0068362 Eth
$37,542,587.00
1,650,391.890 LINK
9.2044%
2
Coinbase Exchange
LINK-USD$22.76
0.0068387 Eth
$37,223,776.00
1,635,778.500 LINK
9.1229%
3
MEXC
LINK-USDT$22.81
0.0068544 Eth
$29,720,111.00
1,302,872.560 LINK
7.2663%
4
Bybit
LINK-USDT$22.78
0.0068474 Eth
$28,753,945.00
1,219,751.290 LINK
6.8027%
5
Slex
LINK-USDT$22.82
0.0068550 Eth
$23,690,553.00
1,005,500.200 LINK
5.6078%
6
CoinW
LINK-USDT$22.77
0.0068386 Eth
$21,233,105.00
932,684.170 LINK
5.2017%
7
Gate.io
LINK-USDT$22.76
0.0068396 Eth
$20,391,213.00
867,254.720 LINK
4.8368%
8
OKX
LINK-USDT$22.80
0.0068521 Eth
$18,082,984.00
770,950.854 LINK
4.2997%
9
DigiFinex
LINK-USDT$22.78
0.0068454 Eth
$13,125,810.00
576,116.900 LINK
3.2131%
10
HTX
LINK-USDT$22.74
0.0068347 Eth
$11,335,021.00
482,432.564 LINK
2.6906%
11
FameEX
LINK-USDT$22.80
0.0068505 Eth
$10,251,321.00
437,408.970 LINK
2.4395%
12
XT.COM
LINK-USDT$22.80
0.0068514 Eth
$10,199,799.00
435,108.830 LINK
2.4267%
13
Azbit
LINK-USDT$22.82
0.0068442 Eth
$10,174,820.00
434,045.312 LINK
2.4207%
14
Coinstore
LINK-USDT$22.82
0.0068550 Eth
$8,961,123.00
382,202.310 LINK
2.1316%
15
Bitunix
LINK-USDT$22.78
0.0068415 Eth
$8,151,099.00
357,940.820 LINK
1.9963%
16
BTSE
LINK-USDT$22.74
0.0068334 Eth
$8,150,107.00
358,426.233 LINK
1.9990%
17
Binance
LINK-FDUSD$22.75
0.0068424 Eth
$8,077,684.00
343,801.640 LINK
1.9174%
18
Biconomy.com
LINK-USDT$22.80
0.0068513 Eth
$6,969,693.00
296,167.354 LINK
1.6518%
19
Kraken
LINK-USD$22.76
0.0068405 Eth
$6,678,312.00
293,391.341 LINK
1.6363%
20
BYDFi
LINK-USDT$22.84
0.0068479 Eth
$6,285,697.00
275,207.590 LINK
1.5349%
21
KuCoin
LINK-USDT$22.77
0.0068425 Eth
$5,447,466.00
239,248.078 LINK
1.3343%
22
Hotcoin
LINK-USDT$22.76
0.0068410 Eth
$5,178,794.00
227,542.410 LINK
1.2690%
23
LATOKEN
LINK-USDT$22.74
0.0068331 Eth
$4,985,169.00
219,247.912 LINK
1.2228%
24
LBank
LINK-USDT$22.75
0.0068369 Eth
$4,567,545.00
200,786.800 LINK
1.1198%
25
Binance
LINK-USDC$22.75
0.0068457 Eth
$3,726,790.00
159,739.170 LINK
0.8909%
26
Dex-Trade
LINK-USDT$22.82
0.0068579 Eth
$3,260,956.00
142,875.460 LINK
0.7968%
27
Coinbase Exchange
LINK-GBP$22.80
0.0068525 Eth
$2,760,545.00
121,051.100 LINK
0.6751%
28
Bitvavo
LINK-EUR$22.77
0.0068447 Eth
$2,431,641.00
106,770.996 LINK
0.5955%
29
Dcoin
LINK-USDT$22.77
0.0068397 Eth
$2,389,875.00
104,960.000 LINK
0.5854%
30
ProBit Global
LINK-USDT$22.79
0.0068484 Eth
$2,252,845.00
98,839.581 LINK
0.5512%
31
CoinEx
LINK-USDT$22.77
0.0068550 Eth
$2,149,912.00
92,123.111 LINK
0.5138%
32
PointPay
LINK-USDT$22.81
0.0068397 Eth
$1,655,167.00
70,686.486 LINK
0.3942%
33
Bitbank
LINK-JPY$22.82
0.0068573 Eth
$1,517,373.00
66,497.733 LINK
0.3709%
34
EXMO
LINK-USDT$22.74
0.0068348 Eth
$1,429,348.00
62,842.911 LINK
0.3505%
35
Bitstamp
LINK-USD$22.75
0.0068367 Eth
$1,356,888.00
59,643.436 LINK
0.3326%
36
WhiteBIT
LINK-BTC$22.77
0.0068410 Eth
$1,246,323.00
54,726.840 LINK
0.3052%
37
Phemex
LINK-USDT$22.77
0.0068421 Eth
$1,227,583.00
53,914.050 LINK
0.3007%
38
WhiteBIT
LINK-TRY$22.89
0.0068797 Eth
$1,216,751.00
53,150.710 LINK
0.2964%
39
Coinbase Exchange
LINK-EUR$22.83
0.0068599 Eth
$1,199,689.00
52,550.530 LINK
0.2931%
40
tanX
LINK-USDC$22.83
0.0068594 Eth
$1,099,795.00
46,567.410 LINK
0.2597%
41
Bitstamp
LINK-EUR$22.78
0.0068449 Eth
$1,098,547.00
48,230.051 LINK
0.2690%
42
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$22.79
0.0068479 Eth
$967,427.00
41,895.346 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2337%
43
Trubit
LINK-USDT$22.75
0.0068330 Eth
$958,444.00
40,733.030 LINK
0.2272%
44
Bybit
LINK-USDC$22.77
0.0068421 Eth
$929,835.00
39,843.878 LINK
0.2222%
45
EarnBIT
LINK-USDT$22.79
0.0068472 Eth
$881,139.00
37,564.286 LINK
0.2095%
46
BigONE
LINK-USDT$22.74
0.0068448 Eth
$853,341.00
37,531.310 LINK
0.2093%
47
BitStorage
LINK-USDT$22.81
0.0068544 Eth
$823,801.00
36,113.840 LINK
0.2014%
48
itBit
LINK-USD$22.78
0.0068459 Eth
$798,480.00
35,051.812 LINK
0.1955%
49
Azbit
LINK-ETH$22.76
0.0068374 Eth
$708,836.00
30,796.055 LINK
0.1718%
50
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$22.71
0.0068231 Eth
$549,848.00
23,677.228 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1321%
51
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.84
0.0068631 Eth
$512,389.00
22,149.010 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1235%
52
Koinpark
LINK-USDT$22.77
0.0068397 Eth
$511,509.00
22,464.920 LINK
0.1253%
53
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$22.77
0.0068426 Eth
$507,193.00
22,307.315 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1244%
54
Binance
LINK-EUR$22.80
0.0068547 Eth
$473,282.00
20,234.360 LINK
0.1128%
55
HashKey Exchange
LINK-USD$22.77
0.0068436 Eth
$461,317.00
19,812.190 LINK
0.1105%
56
Coinbase Exchange
LINK-USDT$22.74
0.0068331 Eth
$454,210.00
19,974.684 LINK
0.1114%
57
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$22.79
0.0068479 Eth
$442,579.00
18,743.014 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1045%
58
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$22.83
0.0068608 Eth
$438,638.00
455,330.124 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.5394%
59
Slex
LINK-ETH$22.76
0.0068407 Eth
$407,025.00
17,724.510 LINK
0.0989%
60
GMO Japan
LINK-JPY$22.81
0.0068518 Eth
$398,981.00
17,491.800 LINK
0.0976%
61
BitMart
LINK-BTC$22.77
0.0068438 Eth
$360,971.00
15,852.060 LINK
0.0884%
62
WhiteBIT
LINK-EUR$22.85
0.0068658 Eth
$354,195.00
15,502.150 LINK
0.0865%
63
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$22.84
0.0068631 Eth
$294,503.00
303,352.703 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.6918%
64
OKX
LINK-USDC$22.79
0.0068493 Eth
$285,216.00
12,145.129 LINK
0.0677%
65
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.74
0.0068334 Eth
$284,537.00
12,388.394 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0691%
66
BitDelta
LINK-USDT$22.75
0.0068434 Eth
$273,319.00
11,596.000 LINK
0.0647%
67
Gemini
LINK-USD$22.74
0.0068334 Eth
$268,346.00
11,801.185 LINK
0.0658%
68
LATOKEN
LINK-BTC$22.77
0.0068424 Eth
$263,416.00
11,566.794 LINK
0.0645%
69
Coinbase Exchange
LINK-BTC$22.77
0.0068410 Eth
$261,404.00
11,478.420 LINK
0.0640%
70
Bitkub
LINK-THB$22.79
0.0068354 Eth
$254,497.00
11,165.079 LINK
0.0623%
71
Bitci TR
LINK-TRY$22.80
0.0068522 Eth
$239,737.00
10,098.561 LINK
0.0563%
72
Coinbase Exchange
LINK-ETH$22.76
0.0068401 Eth
$227,361.00
9,989.170 LINK
0.0557%
73
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$22.81
0.0068630 Eth
$221,142.00
9,376.147 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0523%
74
Binance
LINK-BRL$22.90
0.0068839 Eth
$214,278.00
9,021.830 LINK
0.0503%
75
bitcastle
LINK-USDT$22.80
0.0068363 Eth
$212,582.00
9,057.460 LINK
0.0505%
76
PointPay
LINK-BTC$22.80
0.0068364 Eth
$202,717.00
8,768.884 LINK
0.0489%
77
Hotcoin
LINK-BTC$22.79
0.0068462 Eth
$182,591.00
8,011.590 LINK
0.0447%
78
BitStorage
LINK-ETH$22.78
0.0068453 Eth
$170,634.00
7,490.970 LINK
0.0418%
79
BitMart
LINK-ETH$22.76
0.0068403 Eth
$159,030.00
6,986.280 LINK
0.0390%
80
BTCMarkets
LINK-AUD$22.97
0.0069016 Eth
$144,074.00
6,272.242 LINK
0.0350%
81
KuCoin
LINK-USDC$22.80
0.0068508 Eth
$121,855.00
5,345.240 LINK
0.0298%
82
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.76
0.0068409 Eth
$119,446.00
5,204.561 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0290%
83
Binance US
LINK-USDT$22.76
0.0068400 Eth
$114,736.00
5,040.894 LINK
0.0281%
84
OKX
LINK-EUR$22.68
0.0068164 Eth
$114,464.00
4,962.025 LINK
0.0277%
85
Bitso
LINK-USD$22.80
0.0068504 Eth
$94,396.00
4,139.305 LINK
0.0231%
86
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$22.79
0.0068479 Eth
$79,366.00
82,149.263 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.4582%
87
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$22.84
0.0068631 Eth
$76,166.00
3,330.260 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0186%
88
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$22.84
0.0068631 Eth
$75,555.00
3,214.416 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0179%
89
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$22.84
0.0068617 Eth
$65,727.00
2,851.367 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0159%
90
Hotcoin
LINK-ETH$22.77
0.0068404 Eth
$63,652.00
2,795.310 LINK
0.0156%
91
KuCoin
LINK-BTC$22.81
0.0068541 Eth
$58,347.00
2,558.196 LINK
0.0143%
92
Nonkyc.io
LINK-BTC$22.70
0.0068205 Eth
$50,560.00
2,196.030 LINK
0.0122%
93
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$22.87
0.0068732 Eth
$43,628.00
1,876.307 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0105%
94
Mercado Bitcoin
LINK-BRL$22.94
0.0068929 Eth
$36,465.00
1,589.844 LINK
0.0089%
95
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$22.78
0.0068458 Eth
$18,560.07
25.288 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0001%
96
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$22.98
0.0069061 Eth
$15,837.81
690.689 0X5947BB275C521040051D82396192181B413227A3
0.0039%
97
Gemini
LINK-BTC$22.65
0.0068082 Eth
$14,288.60
630.706 LINK
0.0035%
98
Bitstamp
LINK-BTC$22.82
0.0068584 Eth
$10,241.28
448.743 LINK
0.0025%
99
Bitexen
LINK-TRY$22.78
0.0068307 Eth
$8,897.83
390.544 LINK
0.0022%
100
Ace
LINK-USDT$22.80
0.0068522 Eth
$3,845.03
163.830 LINK
0.0009%

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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