ETH Price: $3,336.21 (-3.50%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

727,905 ( -0.108%)

Market

Price

$20.63 @ 0.006184 ETH (-6.79%)

Onchain Market Cap

$20,630,000,000.00

Circulating Supply Market Cap

$13,014,324,277.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
54.403694797859147751 LINK

Value
$1,122.35 ( ~0.336414923441158 Eth) [0.0000%]
0xefa728d72fee7706edc6956b840d82e0bcd57f31
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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 18654.55% |ETH 0.0003846 1507.9%

Market

Volume (24H):$1,111,236,571.00
Market Capitalization:$13,014,324,277.00
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
Coinbase Exchange
LINK-USD$20.64
0.0061665 Eth
$48,899,607.00
2,369,281.800 LINK
11.0375%
2
Bitget
LINK-USDT$20.66
0.0061710 Eth
$30,431,245.00
1,431,044.799 LINK
6.6667%
3
P2B
LINK-USDT$20.64
0.0061643 Eth
$26,124,981.00
1,265,549.610 LINK
5.8957%
4
Bybit
LINK-USDT$20.64
0.0061664 Eth
$25,068,350.00
1,181,891.258 LINK
5.5060%
5
Slex
LINK-USDT$20.62
0.0061593 Eth
$21,404,743.00
1,009,180.520 LINK
4.7014%
6
MEXC
LINK-USDT$20.64
0.0061643 Eth
$21,151,482.00
1,024,622.750 LINK
4.7733%
7
DigiFinex
LINK-USDT$20.62
0.0061611 Eth
$15,598,307.00
756,291.600 LINK
3.5233%
8
OKX
LINK-USDT$20.65
0.0061701 Eth
$14,813,977.00
696,935.118 LINK
3.2467%
9
Gate.io
LINK-USDT$20.62
0.0061591 Eth
$14,275,242.00
670,427.840 LINK
3.1233%
10
HTX
LINK-USDT$20.67
0.0061748 Eth
$14,247,937.00
672,573.891 LINK
3.1332%
11
Azbit
LINK-USDT$20.53
0.0061463 Eth
$14,116,264.00
661,732.023 LINK
3.0827%
12
XT.COM
LINK-USDT$20.62
0.0061593 Eth
$13,146,453.00
618,193.440 LINK
2.8799%
13
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$20.66
0.0061739 Eth
$12,639,276.00
602,297.615 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.8059%
14
Coinstore
LINK-USDT$20.59
0.0061479 Eth
$11,293,696.00
531,716.780 LINK
2.4771%
15
CoinW
LINK-USDT$20.61
0.0061573 Eth
$9,529,477.00
462,415.980 LINK
2.1542%
16
Bitunix
LINK-USDT$20.68
0.0061766 Eth
$9,512,797.00
460,057.270 LINK
2.1432%
17
Binance
LINK-FDUSD$20.71
0.0061859 Eth
$9,049,858.00
423,725.250 LINK
1.9740%
18
LATOKEN
LINK-USDT$20.83
0.0061669 Eth
$8,841,166.00
424,441.370 LINK
1.9773%
19
BYDFi
LINK-USDT$20.56
0.0061529 Eth
$7,764,786.00
377,734.670 LINK
1.7597%
20
Hotcoin
LINK-USDT$20.62
0.0061583 Eth
$6,908,478.00
334,985.820 LINK
1.5606%
21
Binance
LINK-USDC$20.61
0.0061617 Eth
$6,889,950.00
323,777.640 LINK
1.5083%
22
KuCoin
LINK-USDT$20.66
0.0061713 Eth
$6,438,670.00
311,574.860 LINK
1.4515%
23
LBank
LINK-USDT$20.62
0.0061591 Eth
$6,340,131.00
307,498.280 LINK
1.4325%
24
QMall
LINK-USDT$20.62
0.0061615 Eth
$5,515,846.00
259,310.573 LINK
1.2080%
25
Kraken
LINK-USD$20.64
0.0061656 Eth
$4,806,329.00
232,852.611 LINK
1.0848%
26
BTSE
LINK-USDT$20.60
0.0061534 Eth
$4,710,740.00
228,688.993 LINK
1.0654%
27
Dex-Trade
LINK-USDT$20.51
0.0061411 Eth
$4,085,363.00
199,164.961 LINK
0.9278%
28
Bitvavo
LINK-EUR$20.63
0.0061647 Eth
$3,948,275.00
191,353.451 LINK
0.8914%
29
FMCPAY
LINK-USDT$20.60
0.0061536 Eth
$3,120,049.00
147,216.992 LINK
0.6858%
30
CoinEx
LINK-USDT$20.66
0.0061574 Eth
$2,794,217.00
130,961.807 LINK
0.6101%
31
EXMO
LINK-USDT$20.67
0.0061754 Eth
$2,393,153.00
115,758.357 LINK
0.5393%
32
Dcoin
LINK-USDT$20.63
0.0061620 Eth
$2,368,537.00
114,823.000 LINK
0.5349%
33
Biconomy.com
LINK-USDT$20.66
0.0061675 Eth
$2,137,106.00
100,528.620 LINK
0.4683%
34
Coinbase Exchange
LINK-EUR$20.63
0.0061634 Eth
$1,892,746.00
91,736.680 LINK
0.4274%
35
PointPay
LINK-USDT$20.63
0.0061689 Eth
$1,831,476.00
86,053.902 LINK
0.4009%
36
Bybit
LINK-USDC$20.63
0.0061617 Eth
$1,759,287.00
83,407.990 LINK
0.3886%
37
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$20.71
0.0061856 Eth
$1,685,137.00
80,231.019 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3738%
38
Phemex
LINK-USDT$20.63
0.0061601 Eth
$1,495,401.00
72,495.780 LINK
0.3377%
39
ProBit Global
LINK-USDT$20.62
0.0061619 Eth
$1,465,748.00
71,069.332 LINK
0.3311%
40
itBit
LINK-USD$20.65
0.0061698 Eth
$1,401,656.00
67,876.800 LINK
0.3162%
41
Binance
LINK-EUR$20.64
0.0061667 Eth
$1,357,603.00
63,852.350 LINK
0.2975%
42
FMCPAY
LINK-ETH$20.60
0.0061526 Eth
$1,327,000.00
63,316.320 LINK
0.2950%
43
Kraken
LINK-EUR$20.65
0.0061698 Eth
$1,302,040.00
63,037.602 LINK
0.2937%
44
FMCPAY
LINK-BTC$20.57
0.0061627 Eth
$1,247,296.00
59,797.200 LINK
0.2786%
45
BigONE
LINK-USDT$20.54
0.0061475 Eth
$1,042,496.00
50,745.880 LINK
0.2364%
46
BitStorage
LINK-USDT$20.56
0.0061529 Eth
$1,035,893.00
50,386.570 LINK
0.2347%
47
Coinbase Exchange
LINK-GBP$20.62
0.0061598 Eth
$1,015,578.00
49,250.780 LINK
0.2294%
48
Gemini
LINK-USD$20.62
0.0061594 Eth
$977,297.00
47,397.773 LINK
0.2208%
49
Bitbank
LINK-JPY$20.67
0.0061746 Eth
$946,174.00
45,783.872 LINK
0.2133%
50
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$20.63
0.0061588 Eth
$939,092.00
44,809.429 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2087%
51
Tokpie
LINK-USDT$20.63
0.0061613 Eth
$871,895.00
42,272.242 LINK
0.1969%
52
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$20.64
0.0061659 Eth
$840,373.00
40,348.112 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.1880%
53
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$20.71
0.0061830 Eth
$761,770.00
36,243.950 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1688%
54
tanX
LINK-USDC$20.60
0.0061545 Eth
$721,143.00
34,133.380 LINK
0.1590%
55
Coinbase Exchange
LINK-BTC$20.61
0.0061571 Eth
$716,039.00
34,746.670 LINK
0.1619%
56
Koinpark
LINK-USDT$20.67
0.0061736 Eth
$659,022.00
31,886.575 LINK
0.1485%
57
Coinbase Exchange
LINK-USDT$20.61
0.0061542 Eth
$634,602.00
30,796.951 LINK
0.1435%
58
EarnBIT
LINK-USDT$20.67
0.0061732 Eth
$628,336.00
29,618.735 LINK
0.1380%
59
OKX
LINK-USDC$20.67
0.0061737 Eth
$540,605.00
25,378.352 LINK
0.1182%
60
Bitbegin
LINK-USDT$20.55
0.0061517 Eth
$539,299.00
25,426.893 LINK
0.1185%
61
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$20.57
0.0061425 Eth
$532,387.00
25,003.674 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1165%
62
ProBit Global
LINK-BTC$20.61
0.0061566 Eth
$530,589.00
25,748.713 LINK
0.1200%
63
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$20.66
0.0061689 Eth
$507,063.00
24,091.310 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1122%
64
Binance
LINK-TRY$20.70
0.0061819 Eth
$503,023.00
23,549.700 LINK
0.1097%
65
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$20.64
0.0061627 Eth
$489,040.00
501,870.982 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.3380%
66
Kraken
LINK-ETH$20.62
0.0061597 Eth
$460,794.00
22,345.738 LINK
0.1041%
67
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$20.55
0.0061361 Eth
$449,010.00
462,562.841 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.1549%
68
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$20.48
0.0061180 Eth
$442,778.00
33,855.886 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1577%
69
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$20.65
0.0061647 Eth
$428,715.00
20,352.826 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0948%
70
GMO Japan
LINK-JPY$20.71
0.0061867 Eth
$414,292.00
20,004.200 LINK
0.0932%
71
Coinbase Exchange
LINK-ETH$20.54
0.0061342 Eth
$332,886.00
16,203.870 LINK
0.0755%
72
Slex
LINK-ETH$20.64
0.0061637 Eth
$296,469.00
14,113.490 LINK
0.0657%
73
Bitkub
LINK-THB$20.65
0.0061705 Eth
$295,511.00
14,308.713 LINK
0.0667%
74
BitDelta
LINK-USDT$20.57
0.0061551 Eth
$294,231.00
13,801.000 LINK
0.0643%
75
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$20.59
0.0061488 Eth
$272,569.00
13,244.414 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0617%
76
Hotcoin
LINK-BTC$20.62
0.0061622 Eth
$267,188.00
12,954.850 LINK
0.0604%
77
BitMart
LINK-BTC$20.65
0.0061688 Eth
$260,417.00
12,610.060 LINK
0.0587%
78
Bitso
LINK-USD$20.54
0.0061475 Eth
$254,446.00
12,390.258 LINK
0.0577%
79
BitStorage
LINK-ETH$20.56
0.0061542 Eth
$238,676.00
11,610.560 LINK
0.0541%
80
BYDFi
LINK-USDC$20.65
0.0061668 Eth
$237,763.00
11,514.180 LINK
0.0536%
81
BTCMarkets
LINK-AUD$20.80
0.0062247 Eth
$227,625.00
10,945.906 LINK
0.0510%
82
LATOKEN
LINK-BTC$20.54
0.0061467 Eth
$224,229.00
10,917.575 LINK
0.0509%
83
Bitci TR
LINK-TRY$20.56
0.0061406 Eth
$213,013.00
10,013.740 LINK
0.0466%
84
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$20.67
0.0061754 Eth
$170,377.00
8,034.802 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0374%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$20.66
0.0061685 Eth
$168,596.00
8,014.692 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0373%
86
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$20.63
0.0061595 Eth
$168,389.00
7,936.327 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0370%
87
PointPay
LINK-BTC$20.54
0.0061424 Eth
$163,409.00
7,793.232 LINK
0.0363%
88
Kraken
LINK-GBP$20.60
0.0061528 Eth
$140,114.00
6,802.317 LINK
0.0317%
89
Gemini
LINK-BTC$20.67
0.0061743 Eth
$106,795.00
5,166.985 LINK
0.0241%
90
OKX
LINK-EUR$20.71
0.0061855 Eth
$105,343.00
4,968.620 LINK
0.0231%
91
Hotcoin
LINK-ETH$20.63
0.0061626 Eth
$89,951.00
4,361.060 LINK
0.0203%
92
Binance US
LINK-USDT$20.54
0.0061217 Eth
$87,721.00
4,270.677 LINK
0.0199%
93
CoinEx
LINK-BTC$20.63
0.0061635 Eth
$87,430.00
4,182.868 LINK
0.0195%
94
Mercado Bitcoin
LINK-BRL$20.79
0.0062088 Eth
$84,663.00
4,073.169 LINK
0.0190%
95
BitMart
LINK-ETH$20.64
0.0061648 Eth
$83,681.00
4,054.660 LINK
0.0189%
96
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$20.71
0.0061871 Eth
$70,098.00
3,331.924 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0155%
97
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$20.66
0.0061741 Eth
$63,262.00
2,999.890 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0140%
98
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$20.59
0.0061480 Eth
$62,183.00
2,970.784 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0138%
99
Dex-Trade
LINK-ETH$20.58
0.0061469 Eth
$31,112.00
1,511.980 LINK
0.0070%
100
HTX
LINK-BTC$20.64
0.0061640 Eth
$10,710.24
510.121 LINK
0.0024%

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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