ETH Price: $3,349.02 (+0.41%)
Gas: 2.5 Gwei
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

728,351 ( -0.001%)

Market

Price

$20.08 @ 0.005996 ETH (-1.32%)

Onchain Market Cap

$20,080,000,000.00

Circulating Supply Market Cap

$12,672,958,370.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
22.367194180840490674 LINK

Value
$449.13 ( ~0.134107850723562 Eth) [0.0000%]
0x79c9419cf2ebb77d97719d01600a403cecc2caef
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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 18154.55% |ETH 0.0003846 1459.02%

Market

Volume (24H):$790,084,754.00
Market Capitalization:$12,672,958,370.00
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
Binance
LINK-USDT$20.10
0.0060025 Eth
$92,951,692.00
4,557,802.050 LINK
21.0171%
2
Coinbase Exchange
LINK-USD$20.10
0.0060058 Eth
$46,988,773.00
2,337,517.290 LINK
10.7789%
3
Bitget
LINK-USDT$20.09
0.0059994 Eth
$21,991,022.00
1,075,975.958 LINK
4.9616%
4
Slex
LINK-USDT$20.09
0.0059996 Eth
$21,664,944.00
1,065,481.340 LINK
4.9132%
5
Bybit
LINK-USDT$20.09
0.0059989 Eth
$18,583,420.00
909,701.557 LINK
4.1949%
6
P2B
LINK-USDT$20.06
0.0059920 Eth
$17,158,187.00
855,490.400 LINK
3.9449%
7
CoinW
LINK-USDT$20.08
0.0059971 Eth
$17,038,303.00
848,619.390 LINK
3.9132%
8
OKX
LINK-USDT$20.11
0.0060054 Eth
$12,760,489.00
624,798.367 LINK
2.8811%
9
Gate.io
LINK-USDT$20.09
0.0060010 Eth
$12,566,798.00
613,801.480 LINK
2.8304%
10
DigiFinex
LINK-USDT$20.10
0.0060040 Eth
$11,553,775.00
574,758.190 LINK
2.6503%
11
HTX
LINK-USDT$20.09
0.0059994 Eth
$9,462,073.00
465,052.594 LINK
2.1445%
12
XT.COM
LINK-USDT$20.07
0.0059976 Eth
$9,302,817.00
456,160.670 LINK
2.1035%
13
Azbit
LINK-USDT$20.07
0.0059965 Eth
$9,254,916.00
453,757.858 LINK
2.0924%
14
Coinstore
LINK-USDT$20.08
0.0059960 Eth
$8,226,051.00
403,514.410 LINK
1.8607%
15
Binance
LINK-FDUSD$20.08
0.0060010 Eth
$8,113,667.00
398,165.740 LINK
1.8360%
16
Bitunix
LINK-USDT$20.09
0.0060010 Eth
$6,979,701.00
347,416.430 LINK
1.6020%
17
Binance
LINK-USDC$20.10
0.0060025 Eth
$5,854,119.00
288,012.380 LINK
1.3281%
18
LBank
LINK-USDT$20.10
0.0060025 Eth
$5,766,896.00
286,977.490 LINK
1.3233%
19
BYDFi
LINK-USDT$20.10
0.0060045 Eth
$5,691,286.00
283,198.490 LINK
1.3059%
20
Biconomy.com
LINK-USDT$20.10
0.0060048 Eth
$5,575,340.00
273,853.850 LINK
1.2628%
21
BTSE
LINK-USDT$20.08
0.0059969 Eth
$5,443,755.00
271,149.795 LINK
1.2503%
22
LATOKEN
LINK-USDT$20.07
0.0059936 Eth
$4,476,732.00
223,102.559 LINK
1.0288%
23
QMall
LINK-USDT$20.08
0.0059999 Eth
$3,798,204.00
186,186.024 LINK
0.8585%
24
Hotcoin
LINK-USDT$20.07
0.0059958 Eth
$3,757,967.00
187,276.540 LINK
0.8636%
25
KuCoin
LINK-USDT$20.08
0.0059972 Eth
$3,447,132.00
171,687.281 LINK
0.7917%
26
Kraken
LINK-USD$20.09
0.0060004 Eth
$3,278,746.00
163,202.887 LINK
0.7526%
27
Dex-Trade
LINK-USDT$20.10
0.0060021 Eth
$2,941,616.00
146,328.299 LINK
0.6748%
28
Bitstamp
LINK-EUR$20.13
0.0060125 Eth
$2,910,003.00
144,555.319 LINK
0.6666%
29
Bitvavo
LINK-EUR$20.07
0.0059972 Eth
$2,480,460.00
123,598.954 LINK
0.5699%
30
FMCPAY
LINK-USDT$20.09
0.0060002 Eth
$2,322,968.00
114,097.432 LINK
0.5261%
31
Dcoin
LINK-USDT$20.09
0.0059994 Eth
$2,036,326.00
101,385.000 LINK
0.4675%
32
Bitstamp
LINK-USD$20.01
0.0059765 Eth
$1,989,034.00
99,402.021 LINK
0.4584%
33
CoinEx
LINK-USDT$20.10
0.0060028 Eth
$1,806,003.00
89,061.549 LINK
0.4107%
34
PointPay
LINK-USDT$20.08
0.0059998 Eth
$1,499,264.00
73,485.868 LINK
0.3389%
35
Bitbank
LINK-JPY$20.17
0.0060283 Eth
$1,431,316.00
70,950.502 LINK
0.3272%
36
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$20.02
0.0059827 Eth
$1,298,668.00
63,828.277 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2943%
37
EXMO
LINK-USDT$20.09
0.0060003 Eth
$1,241,535.00
61,800.903 LINK
0.2850%
38
FMCPAY
LINK-ETH$20.10
0.0060037 Eth
$1,229,621.00
60,757.440 LINK
0.2802%
39
FMCPAY
LINK-BTC$20.07
0.0059981 Eth
$1,169,347.00
57,633.100 LINK
0.2658%
40
Phemex
LINK-USDT$20.11
0.0060050 Eth
$1,084,604.00
53,941.680 LINK
0.2487%
41
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$20.04
0.0059844 Eth
$1,058,145.00
51,546.163 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.2377%
42
tanX
LINK-USDC$20.11
0.0060104 Eth
$990,068.00
48,491.560 LINK
0.2236%
43
Bybit
LINK-USDC$20.06
0.0059911 Eth
$896,178.00
43,973.855 LINK
0.2028%
44
Coinbase Exchange
LINK-USDT$20.01
0.0059798 Eth
$886,680.00
44,300.856 LINK
0.2043%
45
Coinbase Exchange
LINK-EUR$20.08
0.0059972 Eth
$869,842.00
43,321.030 LINK
0.1998%
46
WhiteBIT
LINK-TRY$20.16
0.0060227 Eth
$859,441.00
42,623.900 LINK
0.1965%
47
Trubit
LINK-USDT$20.03
0.0059734 Eth
$805,953.00
39,621.000 LINK
0.1827%
48
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$20.12
0.0060114 Eth
$767,581.00
37,932.121 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1749%
49
BitStorage
LINK-USDT$20.10
0.0060056 Eth
$744,628.00
37,050.900 LINK
0.1709%
50
GMO Japan
LINK-JPY$20.13
0.0060117 Eth
$713,919.00
35,472.300 LINK
0.1636%
51
Azbit
LINK-ETH$20.08
0.0059977 Eth
$698,391.00
34,571.517 LINK
0.1594%
52
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$20.03
0.0059826 Eth
$687,616.00
51,940.091 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2395%
53
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$20.12
0.0060111 Eth
$656,024.00
666,738.307 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
3.0745%
54
Gemini
LINK-USD$20.09
0.0059989 Eth
$631,204.00
31,426.370 LINK
0.1449%
55
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$20.08
0.0059970 Eth
$620,787.00
31,086.902 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1433%
56
EarnBIT
LINK-USDT$20.09
0.0060006 Eth
$618,422.00
30,278.304 LINK
0.1396%
57
BigONE
LINK-USDT$20.14
0.0060162 Eth
$605,636.00
30,067.170 LINK
0.1386%
58
Binance
LINK-EUR$20.12
0.0060098 Eth
$590,706.00
29,095.590 LINK
0.1342%
59
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$20.02
0.0059795 Eth
$510,979.00
25,036.946 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1155%
60
HashKey Exchange
LINK-USD$20.15
0.0060207 Eth
$480,374.00
23,315.121 LINK
0.1075%
61
QMall
LINK-USDC$20.08
0.0059951 Eth
$477,943.00
23,501.898 LINK
0.1084%
62
Koinpark
LINK-USDT$20.08
0.0059972 Eth
$468,296.00
23,323.559 LINK
0.1076%
63
KuCoin
LINK-USDC$20.09
0.0060008 Eth
$433,309.00
21,568.464 LINK
0.0995%
64
Bitbegin
LINK-USDT$20.08
0.0059969 Eth
$432,431.00
21,244.076 LINK
0.0980%
65
Coinbase Exchange
LINK-GBP$20.09
0.0059999 Eth
$389,852.00
19,407.200 LINK
0.0895%
66
itBit
LINK-USD$20.11
0.0060078 Eth
$345,591.00
17,185.052 LINK
0.0792%
67
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$20.13
0.0060132 Eth
$343,561.00
348,617.953 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.6076%
68
Slex
LINK-ETH$20.10
0.0060015 Eth
$341,122.00
16,849.560 LINK
0.0777%
69
WhiteBIT
LINK-EUR$20.01
0.0059767 Eth
$341,056.00
17,045.460 LINK
0.0786%
70
Coinbase Exchange
LINK-BTC$20.08
0.0060004 Eth
$301,489.00
15,015.010 LINK
0.0692%
71
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$20.11
0.0060065 Eth
$284,317.00
14,069.987 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0649%
72
BitMart
LINK-BTC$20.10
0.0060031 Eth
$263,744.00
13,123.260 LINK
0.0605%
73
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$20.12
0.0060104 Eth
$247,580.00
12,016.038 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0554%
74
BitDelta
LINK-USDT$20.09
0.0060003 Eth
$229,937.00
11,290.000 LINK
0.0521%
75
OKX
LINK-USDC$20.11
0.0060059 Eth
$228,715.00
11,245.097 LINK
0.0519%
76
Bitci TR
LINK-TRY$20.04
0.0059858 Eth
$206,325.00
10,115.514 LINK
0.0466%
77
Bitkub
LINK-THB$20.09
0.0060024 Eth
$179,347.00
8,928.558 LINK
0.0412%
78
Bitget
LINK-USDC$20.09
0.0060011 Eth
$150,495.00
7,251.340 LINK
0.0334%
79
Hotcoin
LINK-BTC$20.09
0.0060032 Eth
$145,223.00
7,227.200 LINK
0.0333%
80
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$20.10
0.0060023 Eth
$138,744.00
6,784.836 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0313%
81
BYDFi
LINK-USDC$20.10
0.0060023 Eth
$136,274.00
6,779.830 LINK
0.0313%
82
LATOKEN
LINK-BTC$20.09
0.0060034 Eth
$136,079.00
6,773.707 LINK
0.0312%
83
Coinbase Exchange
LINK-ETH$19.98
0.0059680 Eth
$132,812.00
6,647.260 LINK
0.0307%
84
BitMart
LINK-ETH$20.09
0.0060020 Eth
$128,942.00
6,417.080 LINK
0.0296%
85
Binance
LINK-BRL$20.25
0.0060512 Eth
$127,189.00
6,178.750 LINK
0.0285%
86
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$20.14
0.0060167 Eth
$121,501.00
5,955.343 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0275%
87
BitStorage
LINK-ETH$20.11
0.0060048 Eth
$114,607.00
5,700.210 LINK
0.0263%
88
Korbit
LINK-KRW$20.29
0.0060590 Eth
$114,103.00
5,501.295 LINK
0.0254%
89
Kraken
LINK-ETH$20.15
0.0060183 Eth
$113,922.00
5,653.725 LINK
0.0261%
90
PointPay
LINK-BTC$20.12
0.0060100 Eth
$101,140.00
4,977.428 LINK
0.0230%
91
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$20.13
0.0060154 Eth
$98,027.00
4,901.289 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0226%
92
Kraken
LINK-GBP$20.08
0.0059972 Eth
$97,965.00
4,878.920 LINK
0.0225%
93
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$20.10
0.0060050 Eth
$96,539.00
4,736.283 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0218%
94
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$20.09
0.0060022 Eth
$95,110.00
4,703.267 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0217%
95
Foxbit
LINK-BRL$20.24
0.0060440 Eth
$88,491.00
4,291.503 LINK
0.0198%
96
Bitso
LINK-USD$20.09
0.0059999 Eth
$72,137.00
3,591.043 LINK
0.0166%
97
Coins.ph
LINK-PHP$20.11
0.0060062 Eth
$65,972.00
3,244.795 LINK
0.0150%
98
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$20.01
0.0059775 Eth
$64,535.00
3,143.129 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0145%
99
Binance US
LINK-USDT$20.04
0.0059848 Eth
$61,961.00
3,092.276 LINK
0.0143%
100
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$20.12
0.0060105 Eth
$36,032.00
1,778.476 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0082%

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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