ETH Price: $2,190.07 (+3.80%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

741,936 ( 0.061%)

Market

Price

$14.92 @ 0.006813 ETH (+1.68%)

Onchain Market Cap

$14,920,000,000.00

Circulating Supply Market Cap

$9,403,871,922.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0.001005605827141001 LINK

Value
$0.02 ( ~9.13212008802747E-06 Eth) [0.0000%]
0xe2122f74a93606edb23910f97d92c7d646aa8f11
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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 13463.64% |ETH 0.0003846 1671.45%

Market

Volume (24H):$1,047,851,857.00
Market Capitalization:$9,403,871,922.00
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$15.08
0.0068483 Eth
$140,261,739.00
10,028,805.840 LINK
20.9727%
2
Coinbase Exchange
LINK-USD$15.19
0.0068491 Eth
$64,325,751.00
4,235,022.130 LINK
8.8565%
3
Gate.io
LINK-USDT$15.04
0.0068412 Eth
$35,314,150.00
2,524,200.200 LINK
5.2787%
4
Upbit
LINK-KRW$15.52
0.0070597 Eth
$26,045,026.00
1,678,132.049 LINK
3.5094%
5
Ourbit
LINK-USDT$15.09
0.0068533 Eth
$22,034,619.00
1,575,987.650 LINK
3.2958%
6
P2B
LINK-USDT$15.06
0.0068411 Eth
$21,456,608.00
1,424,295.560 LINK
2.9786%
7
HTX
LINK-USDT$15.05
0.0068444 Eth
$20,219,036.00
1,444,467.236 LINK
3.0207%
8
DigiFinex
LINK-USDT$15.07
0.0068538 Eth
$19,114,752.00
1,268,615.060 LINK
2.6530%
9
OKX
LINK-USDT$15.04
0.0068381 Eth
$19,056,503.00
1,362,010.982 LINK
2.8483%
10
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$15.13
0.0068831 Eth
$19,046,520.00
1,297,546.386 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.7135%
11
WhiteBIT
LINK-USDT$15.23
0.0068831 Eth
$18,175,621.00
1,193,130.490 LINK
2.4951%
12
Bybit
LINK-USDT$15.04
0.0068407 Eth
$15,825,346.00
1,128,633.172 LINK
2.3602%
13
MEXC
LINK-EUR$15.11
0.0068426 Eth
$14,759,510.00
976,948.790 LINK
2.0430%
14
Binance
LINK-USDC$15.03
0.0069630 Eth
$14,320,317.00
1,027,203.340 LINK
2.1481%
15
XT.COM
LINK-USDT$15.09
0.0068599 Eth
$14,014,555.00
1,003,239.330 LINK
2.0980%
16
LBank
LINK-USDT$15.10
0.0068564 Eth
$13,185,792.00
873,426.880 LINK
1.8265%
17
Bitget
LINK-USDT$15.06
0.0068498 Eth
$13,172,988.00
938,956.119 LINK
1.9636%
18
MEXC
LINK-USDC$14.43
0.0067182 Eth
$12,790,857.00
886,237.150 LINK
1.8533%
19
Hotcoin
LINK-USDT$15.27
0.0069091 Eth
$11,911,932.00
780,149.440 LINK
1.6315%
20
Coinstore
LINK-USDT$15.05
0.0068356 Eth
$10,513,756.00
751,915.390 LINK
1.5724%
21
KuCoin
LINK-USDT$15.05
0.0068466 Eth
$10,330,917.00
686,361.312 LINK
1.4353%
22
Slex
LINK-USDT$15.28
0.0069136 Eth
$9,399,024.00
672,201.960 LINK
1.4057%
23
CoinW
LINK-USDT$14.42
0.0067131 Eth
$8,957,620.00
621,036.100 LINK
1.2987%
24
FameEX
LINK-USDT$15.05
0.0068467 Eth
$8,934,914.00
632,788.128 LINK
1.3233%
25
Bitunix
LINK-USDT$15.07
0.0068262 Eth
$8,353,302.00
554,426.760 LINK
1.1594%
26
BYDFi
LINK-USDT$15.11
0.0068401 Eth
$8,319,048.00
550,674.570 LINK
1.1516%
27
Azbit
LINK-USDT$15.08
0.0068483 Eth
$8,035,319.00
574,154.557 LINK
1.2007%
28
Kraken
LINK-USD$15.07
0.0068517 Eth
$6,609,203.00
438,602.951 LINK
0.9172%
29
LATOKEN
LINK-USDT$15.08
0.0068267 Eth
$6,229,552.00
413,171.656 LINK
0.8640%
30
Bithumb
LINK-KRW$15.51
0.0070426 Eth
$5,883,994.00
379,475.969 LINK
0.7936%
31
QMall
LINK-USDT$15.09
0.0068519 Eth
$5,735,590.00
410,232.208 LINK
0.8579%
32
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$15.08
0.0068579 Eth
$4,953,905.00
336,318.160 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.7033%
33
Bitvavo
LINK-EUR$15.07
0.0068451 Eth
$4,207,109.00
279,160.423 LINK
0.5838%
34
BTSE
LINK-USDT$15.09
0.0068533 Eth
$4,172,805.00
276,496.577 LINK
0.5782%
35
Dex-Trade
LINK-USDT$15.20
0.0068611 Eth
$3,696,526.00
243,198.275 LINK
0.5086%
36
Binance
LINK-BTC$14.80
0.0068601 Eth
$3,246,408.00
224,438.470 LINK
0.4694%
37
Coinbase Exchange
LINK-EUR$15.07
0.0068413 Eth
$3,180,159.00
211,092.110 LINK
0.4414%
38
CoinEx
LINK-USDT$15.02
0.0068338 Eth
$2,702,348.00
192,376.504 LINK
0.4023%
39
FMCPAY
LINK-USDT$15.33
0.0069180 Eth
$2,537,546.00
180,740.543 LINK
0.3780%
40
Hibt
LINK-USDT$15.08
0.0068283 Eth
$2,358,891.00
168,380.975 LINK
0.3521%
41
Binance
LINK-ETH$15.08
0.0068589 Eth
$2,257,285.00
153,599.140 LINK
0.3212%
42
Biconomy.com
LINK-USDT$15.09
0.0068533 Eth
$2,209,747.00
157,710.750 LINK
0.3298%
43
AscendEX (BitMax)
LINK-USDT$15.10
0.0068695 Eth
$2,097,474.00
138,886.100 LINK
0.2904%
44
Coinbase Exchange
LINK-GBP$15.11
0.0068635 Eth
$1,941,980.00
128,487.030 LINK
0.2687%
45
PointPay
LINK-USDT$15.04
0.0068407 Eth
$1,809,874.00
129,687.594 LINK
0.2712%
46
Gemini
LINK-USD$15.03
0.0068387 Eth
$1,600,266.00
106,441.238 LINK
0.2226%
47
Kraken
LINK-EUR$15.10
0.0068681 Eth
$1,557,886.00
103,139.116 LINK
0.2157%
48
Coinbase Exchange
LINK-USDT$15.10
0.0068574 Eth
$1,425,516.00
94,419.058 LINK
0.1975%
49
Phemex
LINK-USDT$15.23
0.0068798 Eth
$1,419,650.00
93,236.930 LINK
0.1950%
50
FMCPAY
LINK-ETH$15.18
0.0068568 Eth
$1,312,363.00
89,210.240 LINK
0.1866%
51
LATOKEN
LINK-BTC$15.27
0.0069009 Eth
$1,238,194.00
81,066.527 LINK
0.1695%
52
Bitbank
LINK-JPY$15.39
0.0069662 Eth
$1,186,986.00
77,102.075 LINK
0.1612%
53
EXMO
LINK-USDT$15.06
0.0068508 Eth
$1,151,165.00
76,433.393 LINK
0.1598%
54
FMCPAY
LINK-BTC$15.12
0.0068676 Eth
$1,108,472.00
75,900.500 LINK
0.1587%
55
OKX
LINK-USDC$15.05
0.0068419 Eth
$1,107,353.00
79,734.526 LINK
0.1667%
56
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$15.11
0.0068719 Eth
$1,073,146.00
73,037.062 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1527%
57
QMall
LINK-USDC$14.79
0.0068591 Eth
$1,062,517.00
76,385.403 LINK
0.1597%
58
WhiteBIT
LINK-BTC$15.24
0.0068857 Eth
$1,061,101.00
69,630.080 LINK
0.1456%
59
Bybit
LINK-USDC$15.03
0.0068374 Eth
$1,023,776.00
73,533.732 LINK
0.1538%
60
Kraken
LINK-USDT$15.09
0.0068608 Eth
$982,935.00
65,144.228 LINK
0.1362%
61
EarnBIT
LINK-USDT$15.20
0.0069060 Eth
$893,612.00
63,268.425 LINK
0.1323%
62
BitStorage
LINK-USDT$14.74
0.0068432 Eth
$878,424.00
59,580.340 LINK
0.1246%
63
Binance
LINK-EUR$15.31
0.0069275 Eth
$858,339.00
61,320.140 LINK
0.1282%
64
Trubit
LINK-USDT$14.80
0.0068646 Eth
$854,594.00
60,911.880 LINK
0.1274%
65
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$15.06
0.0068483 Eth
$836,730.00
60,258.499 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1260%
66
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$15.13
0.0068831 Eth
$803,608.00
107,730.914 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2253%
67
AscendEX (BitMax)
LINK-BTC$15.13
0.0068833 Eth
$753,111.00
49,768.400 LINK
0.1041%
68
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$15.12
0.0068734 Eth
$659,617.00
45,811.454 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0958%
69
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$15.19
0.0069000 Eth
$644,267.00
43,853.518 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0917%
70
XT.COM
LINK-ETH$15.24
0.0069288 Eth
$625,156.00
42,451.860 LINK
0.0888%
71
Binance
LINK-TRY$15.37
0.0069892 Eth
$624,654.00
44,069.200 LINK
0.0922%
72
WhiteBIT
LINK-TRY$15.12
0.0068335 Eth
$547,260.00
36,185.950 LINK
0.0757%
73
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$15.12
0.0068740 Eth
$502,760.00
34,177.554 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0715%
74
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$15.08
0.0068553 Eth
$489,820.00
35,301.555 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0738%
75
tanX
LINK-USDC$15.35
0.0069487 Eth
$469,256.00
33,632.470 LINK
0.0703%
76
itBit
LINK-USD$15.18
0.0068590 Eth
$444,841.00
29,304.427 LINK
0.0613%
77
BitMart
LINK-BTC$15.23
0.0069192 Eth
$444,797.00
29,196.240 LINK
0.0611%
78
Kraken
LINK-USDC$15.15
0.0068916 Eth
$427,630.00
28,225.166 LINK
0.0590%
79
Hotcoin
LINK-BTC$15.12
0.0068457 Eth
$390,402.00
25,821.070 LINK
0.0540%
80
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$15.11
0.0068717 Eth
$387,518.00
26,356.361 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0551%
81
Coinbase Exchange
LINK-BTC$15.08
0.0068497 Eth
$370,773.00
24,581.160 LINK
0.0514%
82
BitDelta
LINK-USDT$15.08
0.0068483 Eth
$340,949.00
24,390.000 LINK
0.0510%
83
Coinone
LINK-KRW$15.54
0.0070691 Eth
$339,147.00
21,822.869 LINK
0.0456%
84
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$15.13
0.0068831 Eth
$295,534.00
20,975.540 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0439%
85
HashKey Exchange
LINK-USD$15.10
0.0068566 Eth
$274,388.00
19,593.230 LINK
0.0410%
86
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$15.08
0.0068590 Eth
$266,157.00
19,318.332 0X5947BB275C521040051D82396192181B413227A3
0.0404%
87
bitcastle
LINK-USDT$15.05
0.0068347 Eth
$258,980.00
18,524.100 LINK
0.0387%
88
Slex
LINK-ETH$15.18
0.0069779 Eth
$246,131.00
16,848.860 LINK
0.0352%
89
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$15.30
0.0069261 Eth
$237,787.00
16,871.018 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0353%
90
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$15.18
0.0069020 Eth
$232,174.00
216,492.988 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.4527%
91
Bitkub
LINK-THB$15.33
0.0069346 Eth
$222,150.00
14,495.651 LINK
0.0303%
92
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$15.10
0.0068644 Eth
$219,518.00
14,879.692 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0311%
93
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$15.09
0.0068652 Eth
$200,904.00
13,698.886 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0286%
94
WhiteBIT
LINK-EUR$15.29
0.0069089 Eth
$197,613.00
12,923.910 LINK
0.0270%
95
Kraken
LINK-GBP$15.10
0.0068640 Eth
$182,869.00
12,114.054 LINK
0.0253%
96
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$15.04
0.0068409 Eth
$174,924.00
12,063.655 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0252%
97
Bitso
LINK-USD$15.10
0.0068593 Eth
$169,497.00
11,221.323 LINK
0.0235%
98
PointPay
LINK-BTC$15.25
0.0068883 Eth
$128,015.00
8,720.691 LINK
0.0182%
99
OKX
LINK-EUR$15.12
0.0068737 Eth
$121,966.00
8,689.586 LINK
0.0182%
100
Bitcointry
LINK-USDT$15.05
0.0068453 Eth
$81,710.00
5,910.960 LINK
0.0124%

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

API
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"data","type":"bytes"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]

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Deployed Bytecode

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Swarm Source

bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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