ETH Price: $2,101.45 (-10.38%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

741,647 ( 0.017%)

Market

Price

$13.78 @ 0.006557 ETH (-16.36%)

Onchain Market Cap

$13,780,000,000.00

Circulating Supply Market Cap

$8,777,035,752.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
2.15299622999683335 LINK

Value
$29.67 ( ~0.0141188237027849 Eth) [0.0000%]
0x50DBCD94675CD1e78385D086177767Aed437D06e
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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 12427.27% |ETH 0.0003846 1604.89%

Market

Volume (24H):$1,014,138,785.00
Market Capitalization:$8,777,035,752.00
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
Coinbase Exchange
LINK-USD$13.92
0.0066500 Eth
$54,190,872.00
3,894,141.390 LINK
12.6034%
2
Gate.io
LINK-USDT$13.83
0.0066172 Eth
$36,806,991.00
2,496,998.060 LINK
8.0815%
3
HTX
LINK-USDT$13.85
0.0066271 Eth
$20,112,579.00
1,333,494.496 LINK
4.3159%
4
OKX
LINK-USDT$13.82
0.0066148 Eth
$17,970,877.00
1,215,426.436 LINK
3.9337%
5
P2B
LINK-USDT$13.81
0.0066102 Eth
$17,907,529.00
1,296,700.250 LINK
4.1968%
6
DigiFinex
LINK-USDT$13.80
0.0066028 Eth
$16,906,345.00
1,225,141.140 LINK
3.9652%
7
Bybit
LINK-USDT$13.86
0.0066316 Eth
$16,814,024.00
1,117,114.913 LINK
3.6155%
8
XT.COM
LINK-USDT$13.81
0.0066081 Eth
$14,742,767.00
980,199.810 LINK
3.1724%
9
Binance
LINK-USDC$13.80
0.0066020 Eth
$14,413,165.00
965,558.020 LINK
3.1250%
10
Bitget
LINK-USDT$13.79
0.0065981 Eth
$14,412,510.00
961,000.833 LINK
3.1103%
11
WhiteBIT
LINK-USDT$13.85
0.0066281 Eth
$13,836,221.00
998,864.870 LINK
3.2328%
12
MEXC
LINK-EUR$13.81
0.0066183 Eth
$13,044,066.00
944,848.680 LINK
3.0580%
13
MEXC
LINK-USDC$13.89
0.0066395 Eth
$12,562,028.00
904,131.820 LINK
2.9262%
14
LBank
LINK-USDT$13.81
0.0066167 Eth
$11,859,594.00
858,520.590 LINK
2.7786%
15
Hotcoin
LINK-USDT$13.80
0.0066036 Eth
$11,773,868.00
853,136.829 LINK
2.7612%
16
Coinstore
LINK-USDT$13.80
0.0066114 Eth
$11,251,294.00
746,432.420 LINK
2.4158%
17
KuCoin
LINK-USDT$13.87
0.0066283 Eth
$10,194,231.00
734,952.160 LINK
2.3787%
18
Slex
LINK-USDT$13.85
0.0066359 Eth
$9,462,101.00
623,825.270 LINK
2.0190%
19
CoinW
LINK-USDT$13.85
0.0066318 Eth
$9,073,171.00
655,275.090 LINK
2.1208%
20
Binance
LINK-FDUSD$13.80
0.0066442 Eth
$8,269,082.00
545,720.770 LINK
1.7662%
21
BYDFi
LINK-USDT$13.81
0.0066220 Eth
$7,562,230.00
547,571.920 LINK
1.7722%
22
Bitunix
LINK-USDT$13.85
0.0066292 Eth
$7,471,140.00
539,445.310 LINK
1.7459%
23
LATOKEN
LINK-USDT$13.74
0.0066271 Eth
$6,657,067.00
484,407.583 LINK
1.5678%
24
QMall
LINK-USDT$13.80
0.0066137 Eth
$5,902,163.00
393,517.405 LINK
1.2736%
25
Kraken
LINK-USD$13.82
0.0066110 Eth
$5,799,343.00
419,737.045 LINK
1.3585%
26
BTSE
LINK-USDT$13.81
0.0066060 Eth
$4,556,905.00
329,981.050 LINK
1.0680%
27
Bitvavo
LINK-EUR$13.87
0.0066363 Eth
$3,294,534.00
237,535.904 LINK
0.7688%
28
FMCPAY
LINK-USDT$13.79
0.0065988 Eth
$3,243,719.00
214,624.403 LINK
0.6946%
29
Dex-Trade
LINK-USDT$13.91
0.0066452 Eth
$3,242,317.00
233,159.230 LINK
0.7546%
30
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.87
0.0066391 Eth
$3,177,929.00
221,725.875 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.7176%
31
CoinEx
LINK-USDT$13.84
0.0066286 Eth
$2,684,880.00
179,167.105 LINK
0.5799%
32
Coinbase Exchange
LINK-EUR$13.82
0.0066176 Eth
$2,325,621.00
168,328.690 LINK
0.5448%
33
Hibt
LINK-USDT$13.79
0.0066119 Eth
$2,227,965.00
150,639.806 LINK
0.4875%
34
Biconomy.com
LINK-USDT$13.80
0.0066418 Eth
$2,146,937.00
144,415.780 LINK
0.4674%
35
PointPay
LINK-USDT$13.80
0.0066418 Eth
$2,100,457.00
140,110.842 LINK
0.4535%
36
Coinbase Exchange
LINK-GBP$13.81
0.0066162 Eth
$1,977,265.00
143,145.630 LINK
0.4633%
37
AscendEX (BitMax)
LINK-USDT$13.83
0.0066090 Eth
$1,633,997.00
118,146.300 LINK
0.3824%
38
Tokpie
LINK-USDT$13.85
0.0066376 Eth
$1,467,850.00
106,015.722 LINK
0.3431%
39
BigONE
LINK-USDT$13.86
0.0066368 Eth
$1,441,901.00
104,063.490 LINK
0.3368%
40
FMCPAY
LINK-ETH$13.80
0.0066155 Eth
$1,428,580.00
99,473.440 LINK
0.3219%
41
Kraken
LINK-EUR$13.86
0.0066340 Eth
$1,421,865.00
102,552.711 LINK
0.3319%
42
LATOKEN
LINK-BTC$13.74
0.0066261 Eth
$1,341,497.00
97,629.841 LINK
0.3160%
43
Phemex
LINK-USDT$13.79
0.0066074 Eth
$1,260,163.00
91,403.680 LINK
0.2958%
44
FMCPAY
LINK-BTC$13.80
0.0066109 Eth
$1,252,309.00
87,086.900 LINK
0.2819%
45
Coinbase Exchange
LINK-USDT$13.73
0.0065699 Eth
$1,209,664.00
88,103.833 LINK
0.2851%
46
Kraken
LINK-USDT$13.82
0.0066149 Eth
$962,145.00
69,595.655 LINK
0.2252%
47
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.80
0.0066041 Eth
$891,825.00
62,382.334 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2019%
48
Bybit
LINK-USDC$13.85
0.0066258 Eth
$884,652.00
59,897.397 LINK
0.1939%
49
Binance
LINK-EUR$13.83
0.0066241 Eth
$877,692.00
58,066.640 LINK
0.1879%
50
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$13.83
0.0066210 Eth
$866,151.00
57,635.563 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1865%
51
EarnBIT
LINK-USDT$13.87
0.0066449 Eth
$845,953.00
57,202.910 LINK
0.1851%
52
BitStorage
LINK-USDT$13.81
0.0066179 Eth
$842,243.00
60,993.060 LINK
0.1974%
53
Bitbank
LINK-JPY$13.90
0.0066629 Eth
$816,830.00
58,745.922 LINK
0.1901%
54
Trubit
LINK-USDT$13.82
0.0066139 Eth
$813,728.00
54,261.840 LINK
0.1756%
55
WhiteBIT
LINK-BTC$13.82
0.0066222 Eth
$809,099.00
58,555.140 LINK
0.1895%
56
Gemini
LINK-USD$13.84
0.0066217 Eth
$809,087.00
58,464.250 LINK
0.1892%
57
WhiteBIT
LINK-TRY$13.87
0.0066597 Eth
$750,431.00
54,090.830 LINK
0.1751%
58
OKX
LINK-USDC$13.80
0.0066051 Eth
$689,930.00
46,304.520 LINK
0.1499%
59
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$13.87
0.0066391 Eth
$606,645.00
40,132.559 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1299%
60
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$13.86
0.0066245 Eth
$587,500.00
39,674.374 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1284%
61
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$13.78
0.0065977 Eth
$583,651.00
41,602.650 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1346%
62
Binance
LINK-TRY$13.85
0.0066667 Eth
$578,976.00
37,947.260 LINK
0.1228%
63
Coinbase Exchange
LINK-BTC$13.78
0.0066059 Eth
$565,265.00
41,022.220 LINK
0.1328%
64
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.83
0.0066077 Eth
$471,706.00
32,862.025 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1064%
65
XT.COM
LINK-ETH$13.80
0.0066139 Eth
$465,760.00
32,497.490 LINK
0.1052%
66
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$13.77
0.0065886 Eth
$435,195.00
64,907.430 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2101%
67
tanX
LINK-USDC$13.87
0.0066377 Eth
$417,025.00
27,191.280 LINK
0.0880%
68
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.82
0.0066145 Eth
$414,988.00
28,928.974 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0936%
69
Hotcoin
LINK-BTC$13.84
0.0066235 Eth
$412,249.00
29,780.800 LINK
0.0964%
70
BYDFi
LINK-USDC$13.76
0.0066203 Eth
$394,517.00
28,675.450 LINK
0.0928%
71
BitMart
LINK-BTC$13.80
0.0066053 Eth
$375,742.00
27,219.320 LINK
0.0881%
72
BitDelta
LINK-USDT$13.80
0.0066033 Eth
$357,252.00
23,673.000 LINK
0.0766%
73
HashKey Exchange
LINK-USD$13.83
0.0066272 Eth
$353,929.00
23,713.124 LINK
0.0767%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.81
0.0066116 Eth
$339,646.00
23,730.285 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0768%
75
itBit
LINK-USD$13.84
0.0066329 Eth
$331,535.00
23,954.816 LINK
0.0775%
76
GMO Japan
LINK-JPY$13.86
0.0066298 Eth
$309,671.00
22,343.800 LINK
0.0723%
77
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$13.83
0.0066210 Eth
$308,701.00
346,868.543 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.1226%
78
BitStorage
LINK-ETH$13.81
0.0066192 Eth
$299,429.00
21,679.750 LINK
0.0702%
79
bitcastle
LINK-USDT$13.83
0.0066242 Eth
$273,563.00
18,218.540 LINK
0.0590%
80
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$13.92
0.0066796 Eth
$267,368.00
17,622.960 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0570%
81
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$13.83
0.0066176 Eth
$257,888.00
17,912.641 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0580%
82
Slex
LINK-ETH$13.81
0.0066160 Eth
$235,360.00
16,424.570 LINK
0.0532%
83
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$13.84
0.0066225 Eth
$211,958.00
14,060.034 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0455%
84
Bitkub
LINK-THB$13.85
0.0066373 Eth
$191,210.00
13,810.716 LINK
0.0447%
85
CoinTR
LINK-TRY$13.85
0.0066369 Eth
$183,027.00
12,004.230 LINK
0.0389%
86
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.76
0.0065837 Eth
$178,659.00
12,523.558 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0405%
87
WhiteBIT
LINK-EUR$13.86
0.0066707 Eth
$169,463.00
12,226.180 LINK
0.0396%
88
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$13.71
0.0065494 Eth
$163,749.00
12,107.054 0X5947BB275C521040051D82396192181B413227A3
0.0392%
89
Kraken
LINK-GBP$13.82
0.0066145 Eth
$155,090.00
11,218.805 LINK
0.0363%
90
Bitget
LINK-USDC$13.80
0.0066027 Eth
$154,560.00
10,146.440 LINK
0.0328%
91
PointPay
LINK-BTC$13.83
0.0066195 Eth
$147,522.00
10,237.236 LINK
0.0331%
92
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$13.87
0.0066391 Eth
$147,251.00
158,295.613 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5123%
93
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$13.79
0.0065993 Eth
$139,508.00
9,810.827 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0318%
94
BitMart
LINK-ETH$13.81
0.0066095 Eth
$138,705.00
10,041.680 LINK
0.0325%
95
KuCoin
LINK-USDC$13.85
0.0066186 Eth
$117,072.00
8,452.614 LINK
0.0274%
96
Bitso
LINK-USD$13.71
0.0065705 Eth
$103,933.00
7,580.908 LINK
0.0245%
97
Hotcoin
LINK-ETH$13.79
0.0066144 Eth
$98,912.00
7,170.290 LINK
0.0232%
98
Binance US
LINK-USDT$13.72
0.0066110 Eth
$87,262.00
6,360.129 LINK
0.0206%
99
Bittime
LINK-IDR$13.91
0.0066578 Eth
$28,330.00
1,865.890 LINK
0.0060%
100
OKX
LINK-EUR$13.86
0.0066308 Eth
$20,938.00
1,429.171 LINK
0.0046%

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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