ETH Price: $2,099.45 (-10.47%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

741,649 ( 0.017%)

Market

Price

$13.87 @ 0.006607 ETH (-15.15%)

Onchain Market Cap

$13,870,000,000.00

Circulating Supply Market Cap

$8,839,255,697.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
2.97012979 LINK

Value
$41.20 ( ~0.0196242139143585 Eth) [0.0000%]
0x9D833E029400E86a020F166748D40334CCa604cd
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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 12509.09% |ETH 0.0003846 1617.89%

Market

Volume (24H):$1,019,414,596.00
Market Capitalization:$8,839,255,697.00
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$13.77
0.0066349 Eth
$147,488,213.00
9,803,099.920 LINK
23.0442%
2
Coinbase Exchange
LINK-USD$13.90
0.0066354 Eth
$54,194,162.00
3,898,580.100 LINK
9.1644%
3
Gate.io
LINK-USDT$13.90
0.0066294 Eth
$36,838,074.00
2,499,803.560 LINK
5.8763%
4
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$13.92
0.0066408 Eth
$20,495,342.00
1,420,901.428 0X514910771AF9CA656AF840DFF83E8264ECF986CA
3.3401%
5
HTX
LINK-USDT$13.90
0.0066333 Eth
$20,130,072.00
1,335,479.386 LINK
3.1393%
6
OKX
LINK-USDT$13.90
0.0066315 Eth
$17,970,669.00
1,215,901.269 LINK
2.8582%
7
P2B
LINK-USDT$13.81
0.0065910 Eth
$17,936,389.00
1,298,713.260 LINK
3.0529%
8
DigiFinex
LINK-USDT$13.92
0.0066336 Eth
$17,071,860.00
1,226,851.170 LINK
2.8840%
9
Bybit
LINK-USDT$13.90
0.0066277 Eth
$16,817,766.00
1,117,359.429 LINK
2.6266%
10
XT.COM
LINK-USDT$13.83
0.0066006 Eth
$14,754,805.00
981,310.280 LINK
2.3068%
11
Binance
LINK-USDC$13.80
0.0066020 Eth
$14,413,165.00
965,558.020 LINK
2.2697%
12
Bitget
LINK-USDT$13.89
0.0066229 Eth
$14,389,565.00
959,639.300 LINK
2.2558%
13
WhiteBIT
LINK-USDT$13.85
0.0066121 Eth
$13,539,347.00
977,425.240 LINK
2.2976%
14
MEXC
LINK-EUR$13.86
0.0066068 Eth
$13,093,676.00
944,698.320 LINK
2.2207%
15
MEXC
LINK-USDC$13.89
0.0066395 Eth
$12,562,028.00
904,131.820 LINK
2.1253%
16
LBank
LINK-USDT$13.84
0.0065959 Eth
$11,886,739.00
858,813.100 LINK
2.0188%
17
Hotcoin
LINK-USDT$13.92
0.0066401 Eth
$11,866,425.00
852,570.659 LINK
2.0041%
18
Coinstore
LINK-USDT$13.85
0.0065992 Eth
$11,243,022.00
746,294.150 LINK
1.7543%
19
KuCoin
LINK-USDT$13.90
0.0066295 Eth
$10,190,779.00
733,354.002 LINK
1.7239%
20
Slex
LINK-USDT$13.90
0.0066376 Eth
$9,473,693.00
623,992.710 LINK
1.4668%
21
CoinW
LINK-USDT$13.85
0.0066318 Eth
$9,073,171.00
655,275.090 LINK
1.5404%
22
Binance
LINK-FDUSD$13.80
0.0066442 Eth
$8,269,082.00
545,720.770 LINK
1.2828%
23
BYDFi
LINK-USDT$13.81
0.0066220 Eth
$7,562,230.00
547,571.920 LINK
1.2872%
24
Bitunix
LINK-USDT$13.91
0.0066377 Eth
$7,517,683.00
540,125.260 LINK
1.2697%
25
Toobit
LINK-USDT$13.92
0.0066401 Eth
$6,928,096.00
460,673.110 LINK
1.0829%
26
LATOKEN
LINK-USDT$13.74
0.0066271 Eth
$6,657,067.00
484,407.583 LINK
1.1387%
27
Kraken
LINK-USD$13.89
0.0066278 Eth
$5,960,905.00
429,054.758 LINK
1.0086%
28
QMall
LINK-USDT$13.84
0.0065943 Eth
$5,912,711.00
394,282.399 LINK
0.9268%
29
BTSE
LINK-USDT$13.81
0.0065910 Eth
$4,575,026.00
331,209.462 LINK
0.7786%
30
Bitvavo
LINK-EUR$13.93
0.0066415 Eth
$3,309,232.00
237,532.021 LINK
0.5584%
31
Dex-Trade
LINK-USDT$13.90
0.0066299 Eth
$3,245,732.00
233,548.630 LINK
0.5490%
32
FMCPAY
LINK-USDT$13.87
0.0066162 Eth
$3,243,007.00
214,710.503 LINK
0.5047%
33
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.82
0.0065950 Eth
$3,186,200.00
221,875.867 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.5216%
34
CoinEx
LINK-USDT$13.84
0.0066286 Eth
$2,684,880.00
179,167.105 LINK
0.4212%
35
Coinbase Exchange
LINK-EUR$13.85
0.0066110 Eth
$2,339,427.00
168,915.870 LINK
0.3971%
36
Hibt
LINK-USDT$13.84
0.0066026 Eth
$2,225,493.00
150,511.133 LINK
0.3538%
37
Biconomy.com
LINK-USDT$13.80
0.0066418 Eth
$2,146,937.00
144,415.780 LINK
0.3395%
38
PointPay
LINK-USDT$13.80
0.0066418 Eth
$2,100,457.00
140,110.842 LINK
0.3294%
39
Coinbase Exchange
LINK-GBP$13.85
0.0066097 Eth
$1,984,355.00
143,305.980 LINK
0.3369%
40
Binance
LINK-ETH$13.88
0.0066202 Eth
$1,675,522.00
116,385.770 LINK
0.2736%
41
AscendEX (BitMax)
LINK-USDT$13.86
0.0066101 Eth
$1,638,630.00
118,262.300 LINK
0.2780%
42
Tokpie
LINK-USDT$13.83
0.0065984 Eth
$1,466,321.00
106,013.179 LINK
0.2492%
43
Kraken
LINK-EUR$13.92
0.0066428 Eth
$1,440,929.00
103,481.641 LINK
0.2433%
44
FMCPAY
LINK-ETH$13.84
0.0066064 Eth
$1,439,350.00
99,788.480 LINK
0.2346%
45
BigONE
LINK-USDT$13.81
0.0065827 Eth
$1,436,322.00
104,008.450 LINK
0.2445%
46
Phemex
LINK-USDT$13.86
0.0066145 Eth
$1,266,722.00
91,384.700 LINK
0.2148%
47
FMCPAY
LINK-BTC$13.82
0.0065868 Eth
$1,257,017.00
87,145.000 LINK
0.2049%
48
Coinbase Exchange
LINK-USDT$13.86
0.0066058 Eth
$1,221,961.00
88,153.833 LINK
0.2072%
49
Kraken
LINK-USDT$13.90
0.0066297 Eth
$938,690.00
67,546.148 LINK
0.1588%
50
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.84
0.0066052 Eth
$900,620.00
62,726.308 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1475%
51
Bybit
LINK-USDC$13.91
0.0066329 Eth
$886,812.00
60,036.126 LINK
0.1411%
52
Binance
LINK-EUR$13.83
0.0066241 Eth
$877,692.00
58,066.640 LINK
0.1365%
53
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$13.81
0.0065905 Eth
$875,315.00
58,317.225 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1371%
54
BitStorage
LINK-USDT$13.92
0.0066476 Eth
$849,575.00
61,040.710 LINK
0.1435%
55
EarnBIT
LINK-USDT$13.88
0.0066266 Eth
$848,937.00
57,257.961 LINK
0.1346%
56
Gemini
LINK-USD$13.91
0.0066321 Eth
$818,572.00
58,839.277 LINK
0.1383%
57
Bitbank
LINK-JPY$13.92
0.0066373 Eth
$812,314.00
58,338.043 LINK
0.1371%
58
Trubit
LINK-USDT$13.83
0.0065991 Eth
$811,759.00
54,237.420 LINK
0.1275%
59
WhiteBIT
LINK-BTC$13.82
0.0066222 Eth
$809,099.00
58,555.140 LINK
0.1376%
60
WhiteBIT
LINK-TRY$13.87
0.0066597 Eth
$750,431.00
54,090.830 LINK
0.1272%
61
OKX
LINK-USDC$13.91
0.0066376 Eth
$689,551.00
46,285.077 LINK
0.1088%
62
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$13.87
0.0066213 Eth
$591,240.00
39,329.580 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0925%
63
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$13.81
0.0065901 Eth
$591,045.00
41,840.550 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0984%
64
Binance
LINK-TRY$13.85
0.0066667 Eth
$578,976.00
37,947.260 LINK
0.0892%
65
Coinbase Exchange
LINK-BTC$13.83
0.0065955 Eth
$568,062.00
41,088.280 LINK
0.0966%
66
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.84
0.0066020 Eth
$472,096.00
32,862.025 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0772%
67
XT.COM
LINK-ETH$13.85
0.0066022 Eth
$468,894.00
32,573.520 LINK
0.0766%
68
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$13.80
0.0065839 Eth
$436,074.00
64,907.430 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1526%
69
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.90
0.0066346 Eth
$418,126.00
29,106.185 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0684%
70
tanX
LINK-USDC$13.87
0.0066377 Eth
$417,025.00
27,191.280 LINK
0.0639%
71
Hotcoin
LINK-BTC$13.87
0.0066113 Eth
$413,122.00
29,788.510 LINK
0.0700%
72
BYDFi
LINK-USDC$13.76
0.0066203 Eth
$394,517.00
28,675.450 LINK
0.0674%
73
BitMart
LINK-BTC$13.82
0.0065924 Eth
$377,805.00
27,345.140 LINK
0.0643%
74
BitDelta
LINK-USDT$13.84
0.0066039 Eth
$358,778.00
23,787.000 LINK
0.0559%
75
HashKey Exchange
LINK-USD$13.88
0.0066145 Eth
$353,784.00
23,704.673 LINK
0.0557%
76
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.84
0.0066069 Eth
$341,380.00
23,746.260 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0558%
77
itBit
LINK-USD$13.93
0.0066533 Eth
$336,715.00
24,171.932 LINK
0.0568%
78
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$13.91
0.0066414 Eth
$307,658.00
343,336.765 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.8071%
79
BitStorage
LINK-ETH$13.88
0.0066298 Eth
$301,185.00
21,698.030 LINK
0.0510%
80
GMO Japan
LINK-JPY$13.85
0.0066091 Eth
$278,744.00
20,124.200 LINK
0.0473%
81
bitcastle
LINK-USDT$13.90
0.0066381 Eth
$273,878.00
18,248.330 LINK
0.0429%
82
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$13.95
0.0066629 Eth
$265,674.00
17,584.831 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0413%
83
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$13.85
0.0066134 Eth
$258,887.00
17,936.320 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0422%
84
Slex
LINK-ETH$13.85
0.0066116 Eth
$236,303.00
16,429.120 LINK
0.0386%
85
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$13.90
0.0066327 Eth
$210,720.00
14,007.568 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0329%
86
Bitkub
LINK-THB$13.88
0.0066253 Eth
$191,270.00
13,780.508 LINK
0.0324%
87
CoinTR
LINK-TRY$13.90
0.0066379 Eth
$182,560.00
11,982.790 LINK
0.0282%
88
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.86
0.0066138 Eth
$180,587.00
12,547.094 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0295%
89
WhiteBIT
LINK-EUR$13.86
0.0066707 Eth
$169,463.00
12,226.180 LINK
0.0287%
90
Kraken
LINK-GBP$13.83
0.0065989 Eth
$155,667.00
11,253.805 LINK
0.0265%
91
PointPay
LINK-BTC$13.87
0.0066113 Eth
$148,401.00
10,274.423 LINK
0.0242%
92
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$13.82
0.0065953 Eth
$144,087.00
155,170.038 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3648%
93
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$13.83
0.0066019 Eth
$139,706.00
9,794.524 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0230%
94
BitMart
LINK-ETH$13.85
0.0066005 Eth
$139,554.00
10,079.080 LINK
0.0237%
95
KuCoin
LINK-USDC$13.89
0.0066261 Eth
$116,139.00
8,361.815 LINK
0.0197%
96
Uniswap V2 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$13.86
0.0066135 Eth
$111,250.00
7,701.317 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0181%
97
Bitso
LINK-USD$13.71
0.0065482 Eth
$103,933.00
7,580.908 LINK
0.0178%
98
Hotcoin
LINK-ETH$13.85
0.0066084 Eth
$99,257.00
7,167.310 LINK
0.0168%
99
Binance US
LINK-USDT$13.72
0.0066110 Eth
$87,262.00
6,360.129 LINK
0.0150%
100
Bittime
LINK-IDR$13.96
0.0066559 Eth
$28,275.00
1,863.980 LINK
0.0044%

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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