ETH Price: $2,140.18 (-9.22%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

740,318 ( 0.010%)

Market

Price

$13.95 @ 0.006518 ETH (-10.48%)

Onchain Market Cap

$13,950,000,000.00

Circulating Supply Market Cap

$8,903,259,682.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0xdbbcea74afb76f1ade914a2e23830959218ca512
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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 12581.82% |ETH 0.0003846 1594.75%

Market

Volume (24H):$757,770,066.00
Market Capitalization:$8,903,259,682.00
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$13.95
0.0065280 Eth
$96,235,521.00
6,646,787.010 LINK
20.0253%
2
Coinbase Exchange
LINK-USD$14.01
0.0065373 Eth
$37,792,604.00
2,697,352.380 LINK
8.1265%
3
WhiteBIT
LINK-USDT$14.00
0.0065316 Eth
$34,026,139.00
2,430,640.100 LINK
7.3230%
4
Gate.io
LINK-USDT$14.02
0.0065436 Eth
$22,801,038.00
1,591,932.340 LINK
4.7962%
5
Upbit
LINK-KRW$14.18
0.0066172 Eth
$16,291,465.00
1,149,014.469 LINK
3.4617%
6
Ourbit
LINK-USDT$13.98
0.0065487 Eth
$14,995,969.00
1,036,314.120 LINK
3.1222%
7
Hotcoin
LINK-USDT$14.00
0.0065552 Eth
$14,844,274.00
1,060,353.130 LINK
3.1946%
8
HTX
LINK-USDT$14.02
0.0065426 Eth
$14,294,804.00
971,531.174 LINK
2.9270%
9
P2B
LINK-USDT$13.94
0.0065310 Eth
$14,176,527.00
1,016,946.680 LINK
3.0638%
10
OKX
LINK-USDT$14.07
0.0065646 Eth
$12,344,279.00
848,011.677 LINK
2.5549%
11
DigiFinex
LINK-USDT$14.02
0.0065405 Eth
$11,657,960.00
831,626.870 LINK
2.5055%
12
XT.COM
LINK-USDT$13.98
0.0065487 Eth
$9,593,980.00
662,947.760 LINK
1.9973%
13
MEXC
LINK-EUR$13.99
0.0065491 Eth
$8,962,514.00
640,611.860 LINK
1.9300%
14
Slex
LINK-USDT$14.00
0.0065134 Eth
$8,934,268.00
603,529.370 LINK
1.8183%
15
KuCoin
LINK-USDT$14.01
0.0065381 Eth
$8,815,331.00
629,094.572 LINK
1.8953%
16
MEXC
LINK-USDC$13.92
0.0065210 Eth
$8,524,896.00
612,320.660 LINK
1.8448%
17
Binance
LINK-USDC$14.02
0.0065435 Eth
$8,473,852.00
589,078.930 LINK
1.7748%
18
Bybit
LINK-USDT$14.05
0.0065576 Eth
$8,303,634.00
573,873.217 LINK
1.7290%
19
LBank
LINK-USDT$13.96
0.0065398 Eth
$8,130,753.00
582,407.460 LINK
1.7547%
20
Bitget
LINK-USDT$14.02
0.0065408 Eth
$8,055,027.00
556,228.911 LINK
1.6758%
21
Coinstore
LINK-USDT$13.96
0.0065317 Eth
$7,806,397.00
538,349.330 LINK
1.6219%
22
CoinW
LINK-USDT$13.97
0.0065430 Eth
$6,304,749.00
451,437.060 LINK
1.3601%
23
Binance
LINK-FDUSD$13.97
0.0065448 Eth
$6,238,126.00
428,066.550 LINK
1.2897%
24
Azbit
LINK-USDT$14.00
0.0065315 Eth
$5,733,820.00
396,102.643 LINK
1.1934%
25
BYDFi
LINK-USDT$13.97
0.0065322 Eth
$5,168,493.00
370,055.940 LINK
1.1149%
26
Bitunix
LINK-USDT$14.00
0.0065576 Eth
$5,121,346.00
365,670.340 LINK
1.1017%
27
LATOKEN
LINK-USDT$14.03
0.0065455 Eth
$4,379,490.00
312,182.710 LINK
0.9405%
28
QMall
LINK-USDT$13.96
0.0065338 Eth
$4,030,817.00
278,444.076 LINK
0.8389%
29
Kraken
LINK-USD$13.97
0.0065212 Eth
$3,300,521.00
236,209.552 LINK
0.7116%
30
BTSE
LINK-USDT$14.02
0.0065148 Eth
$3,159,459.00
225,367.088 LINK
0.6790%
31
FMCPAY
LINK-USDT$13.94
0.0065314 Eth
$2,715,671.00
186,104.915 LINK
0.5607%
32
Bitvavo
LINK-EUR$14.00
0.0065525 Eth
$2,715,643.00
194,004.520 LINK
0.5845%
33
Dex-Trade
LINK-USDT$14.00
0.0065585 Eth
$2,540,278.00
181,441.070 LINK
0.5466%
34
Binance
LINK-BTC$14.01
0.0065359 Eth
$2,477,048.00
175,181.100 LINK
0.5278%
35
Coinbase Exchange
LINK-EUR$13.98
0.0065480 Eth
$2,080,838.00
148,865.190 LINK
0.4485%
36
BigONE
LINK-USDT$14.03
0.0065726 Eth
$1,760,799.00
125,497.550 LINK
0.3781%
37
Biconomy.com
LINK-USDT$14.04
0.0065524 Eth
$1,675,674.00
114,121.210 LINK
0.3438%
38
Binance
LINK-ETH$13.97
0.0065372 Eth
$1,667,246.00
119,163.760 LINK
0.3590%
39
Coinbase Exchange
LINK-GBP$13.98
0.0065466 Eth
$1,624,417.00
116,236.220 LINK
0.3502%
40
Gemini
LINK-USD$13.98
0.0065258 Eth
$1,622,829.00
116,058.668 LINK
0.3497%
41
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.87
0.0064726 Eth
$1,526,034.00
109,324.565 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3294%
42
Hibt
LINK-USDT$13.97
0.0065421 Eth
$1,433,950.00
98,861.224 LINK
0.2978%
43
CoinEx
LINK-USDT$13.96
0.0065188 Eth
$1,402,727.00
96,464.850 LINK
0.2906%
44
PointPay
LINK-USDT$13.94
0.0065272 Eth
$1,247,730.00
86,254.806 LINK
0.2599%
45
FMCPAY
LINK-ETH$13.96
0.0065364 Eth
$1,198,665.00
85,468.640 LINK
0.2575%
46
FMCPAY
LINK-BTC$14.01
0.0065155 Eth
$1,064,014.00
74,623.500 LINK
0.2248%
47
WhiteBIT
LINK-BTC$14.02
0.0065192 Eth
$948,931.00
67,683.130 LINK
0.2039%
48
Phemex
LINK-USDT$13.94
0.0065310 Eth
$892,079.00
63,992.900 LINK
0.1928%
49
EXMO
LINK-USDT$14.03
0.0065524 Eth
$856,762.00
61,074.123 LINK
0.1840%
50
Trubit
LINK-USDT$14.06
0.0065599 Eth
$836,287.00
56,818.630 LINK
0.1712%
51
Bitstamp
LINK-USD$13.96
0.0065152 Eth
$825,094.00
59,104.142 LINK
0.1781%
52
Bitbank
LINK-JPY$14.09
0.0065743 Eth
$814,933.00
57,851.000 LINK
0.1743%
53
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.97
0.0065174 Eth
$811,815.00
58,355.593 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1758%
54
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$13.94
0.0065036 Eth
$738,159.00
49,334.390 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1486%
55
QMall
LINK-USDC$13.95
0.0065300 Eth
$673,313.00
46,702.606 LINK
0.1407%
56
BitStorage
LINK-USDT$13.99
0.0065469 Eth
$659,537.00
47,134.790 LINK
0.1420%
57
Binance
LINK-TRY$13.98
0.0065229 Eth
$628,233.00
43,564.620 LINK
0.1313%
58
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$13.99
0.0065293 Eth
$622,281.00
42,872.064 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1292%
59
Binance
LINK-EUR$13.95
0.0065317 Eth
$608,123.00
42,035.670 LINK
0.1266%
60
EarnBIT
LINK-USDT$13.95
0.0065294 Eth
$592,753.00
40,973.775 LINK
0.1234%
61
tanX
LINK-USDC$14.01
0.0065620 Eth
$565,360.00
37,799.800 LINK
0.1139%
62
CoinTR
LINK-USDT$13.97
0.0065412 Eth
$557,806.00
38,529.720 LINK
0.1161%
63
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$13.93
0.0065008 Eth
$553,214.00
38,974.759 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1174%
64
BYDFi
LINK-USDC$14.07
0.0065340 Eth
$473,759.00
33,666.280 LINK
0.1014%
65
XT.COM
LINK-ETH$13.97
0.0065372 Eth
$466,725.00
33,359.040 LINK
0.1005%
66
Hotcoin
LINK-BTC$14.02
0.0065446 Eth
$457,696.00
32,638.890 LINK
0.0983%
67
Bitstamp
LINK-EUR$13.98
0.0065236 Eth
$398,697.00
28,523.151 LINK
0.0859%
68
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$14.01
0.0065370 Eth
$393,554.00
28,119.010 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0847%
69
BitMart
LINK-BTC$13.99
0.0065315 Eth
$365,900.00
26,145.120 LINK
0.0788%
70
OKX
LINK-USDC$14.02
0.0065429 Eth
$358,673.00
24,394.099 LINK
0.0735%
71
BitStorage
LINK-ETH$13.96
0.0065344 Eth
$336,532.00
24,109.360 LINK
0.0726%
72
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$13.99
0.0065516 Eth
$333,903.00
23,457.734 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0707%
73
WhiteBIT
LINK-TRY$13.98
0.0065235 Eth
$331,431.00
23,704.890 LINK
0.0714%
74
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$13.91
0.0064923 Eth
$331,024.00
45,403.647 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1368%
75
Coinbase Exchange
LINK-BTC$13.97
0.0065241 Eth
$295,393.00
21,148.450 LINK
0.0637%
76
BitDelta
LINK-USDT$13.94
0.0065308 Eth
$257,611.00
17,590.000 LINK
0.0530%
77
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.96
0.0065132 Eth
$251,470.00
18,036.501 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0543%
78
Bybit
LINK-USDC$14.01
0.0065387 Eth
$247,996.00
17,201.175 LINK
0.0518%
79
Bitso
LINK-USD$14.00
0.0065402 Eth
$244,385.00
17,456.066 LINK
0.0526%
80
Binance
LINK-JPY$14.03
0.0065723 Eth
$228,161.00
15,926.960 LINK
0.0480%
81
Coinbase Exchange
LINK-USDT$14.00
0.0065527 Eth
$220,862.00
15,778.494 LINK
0.0475%
82
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$13.91
0.0064923 Eth
$220,390.00
15,392.586 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0464%
83
Bitkub
LINK-THB$13.92
0.0065217 Eth
$213,517.00
15,336.819 LINK
0.0462%
84
Kraken
LINK-GBP$13.98
0.0065252 Eth
$212,022.00
15,164.544 LINK
0.0457%
85
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$13.94
0.0065036 Eth
$202,998.00
215,131.808 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.6481%
86
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$13.98
0.0065215 Eth
$202,264.00
14,398.439 0X5947BB275C521040051D82396192181B413227A3
0.0434%
87
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.94
0.0065025 Eth
$196,447.00
14,089.624 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0424%
88
bitcastle
LINK-USDT$13.94
0.0065305 Eth
$189,789.00
13,075.360 LINK
0.0394%
89
CoinTR
LINK-TRY$13.99
0.0065527 Eth
$184,289.00
12,454.550 LINK
0.0375%
90
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$13.97
0.0065419 Eth
$180,355.00
12,453.950 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0375%
91
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$13.89
0.0065071 Eth
$179,355.00
12,908.321 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0389%
92
Binance US
LINK-USDT$13.97
0.0065445 Eth
$167,060.00
11,957.987 LINK
0.0360%
93
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$14.00
0.0065350 Eth
$130,476.00
9,297.353 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0280%
94
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$13.87
0.0064726 Eth
$130,018.00
136,847.823 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.4123%
95
Hotcoin
LINK-ETH$14.00
0.0065327 Eth
$123,591.00
8,829.420 LINK
0.0266%
96
PointPay
LINK-BTC$13.96
0.0065357 Eth
$94,676.00
6,711.025 LINK
0.0202%
97
KuCoin
LINK-USDC$13.99
0.0065291 Eth
$89,878.00
6,422.771 LINK
0.0194%
98
Binance
LINK-BNB$13.93
0.0065262 Eth
$68,134.00
4,823.203 LINK
0.0145%
99
Mercado Bitcoin
LINK-BRL$14.07
0.0065727 Eth
$52,860.00
3,756.441 LINK
0.0113%
100
Dex-Trade
LINK-ETH$13.94
0.0065300 Eth
$44,687.00
3,205.760 LINK
0.0097%

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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