ETH Price: $2,065.13 (-15.61%)
Gas: 3.41 Gwei

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

741,579 ( 0.010%)

Market

Price

$13.73 @ 0.006649 ETH (-17.96%)

Onchain Market Cap

$13,730,000,000.00

Circulating Supply Market Cap

$8,708,141,880.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
49.973630288974465842 LINK

Value
$686.14 ( ~0.332250741117751 Eth) [0.0000%]
0x3067990803977f63d7b294b0236eb20a2d0e2655
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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 12381.82% |ETH 0.0003846 1628.81%

Market

Volume (24H):$1,017,356,521.00
Market Capitalization:$8,708,141,880.00
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$13.87
0.0067231 Eth
$149,730,264.00
9,761,851.710 LINK
23.7464%
2
Coinbase Exchange
LINK-USD$13.81
0.0067027 Eth
$54,338,666.00
3,933,593.860 LINK
9.5688%
3
Gate.io
LINK-USDT$13.81
0.0066947 Eth
$37,399,393.00
2,499,674.820 LINK
6.0806%
4
HTX
LINK-USDT$13.88
0.0067294 Eth
$22,828,519.00
1,460,880.974 LINK
3.5537%
5
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$13.81
0.0066989 Eth
$18,281,383.00
1,278,961.568 0X514910771AF9CA656AF840DFF83E8264ECF986CA
3.1112%
6
OKX
LINK-USDT$13.87
0.0067240 Eth
$17,780,271.00
1,166,992.810 LINK
2.8388%
7
Bybit
LINK-USDT$13.82
0.0066991 Eth
$17,690,361.00
1,145,649.684 LINK
2.7869%
8
P2B
LINK-USDT$13.76
0.0066801 Eth
$17,378,134.00
1,263,016.600 LINK
3.0724%
9
DigiFinex
LINK-USDT$13.81
0.0066939 Eth
$16,720,784.00
1,210,898.520 LINK
2.9456%
10
XT.COM
LINK-USDT$13.74
0.0066579 Eth
$14,957,323.00
974,183.240 LINK
2.3698%
11
Binance
LINK-USDC$13.74
0.0066470 Eth
$14,777,319.00
970,124.140 LINK
2.3599%
12
Bitget
LINK-USDT$13.81
0.0066940 Eth
$14,746,830.00
959,903.218 LINK
2.3350%
13
WhiteBIT
LINK-USDT$13.81
0.0067006 Eth
$13,491,324.00
976,954.230 LINK
2.3765%
14
MEXC
LINK-EUR$13.73
0.0066563 Eth
$12,689,937.00
924,183.930 LINK
2.2481%
15
MEXC
LINK-USDC$13.79
0.0066940 Eth
$12,214,894.00
885,908.340 LINK
2.1550%
16
Hotcoin
LINK-USDT$13.82
0.0067013 Eth
$11,691,411.00
846,256.679 LINK
2.0586%
17
Slex
LINK-USDT$13.60
0.0066725 Eth
$9,852,541.00
622,531.870 LINK
1.5144%
18
KuCoin
LINK-USDT$13.82
0.0067017 Eth
$9,689,981.00
701,345.821 LINK
1.7061%
19
CoinW
LINK-USDT$13.74
0.0066553 Eth
$8,734,639.00
635,832.890 LINK
1.5467%
20
Azbit
LINK-USDT$13.74
0.0066703 Eth
$8,684,740.00
566,817.412 LINK
1.3788%
21
Binance
LINK-FDUSD$13.77
0.0066817 Eth
$8,391,885.00
541,952.930 LINK
1.3183%
22
BYDFi
LINK-USDT$13.63
0.0066529 Eth
$7,463,238.00
547,487.550 LINK
1.3318%
23
Bitunix
LINK-USDT$13.77
0.0066820 Eth
$7,356,648.00
534,543.640 LINK
1.3003%
24
LATOKEN
LINK-USDT$13.67
0.0067072 Eth
$6,717,141.00
491,344.305 LINK
1.1952%
25
QMall
LINK-USDT$13.75
0.0066719 Eth
$6,117,107.00
399,129.574 LINK
0.9709%
26
Kraken
LINK-USD$13.78
0.0066806 Eth
$5,784,733.00
419,739.244 LINK
1.0210%
27
BTSE
LINK-USDT$13.81
0.0067006 Eth
$4,374,451.00
316,769.368 LINK
0.7706%
28
Binance
LINK-BTC$13.81
0.0066940 Eth
$3,922,589.00
269,652.470 LINK
0.6560%
29
Bitvavo
LINK-EUR$13.76
0.0066712 Eth
$3,423,451.00
248,715.864 LINK
0.6050%
30
FMCPAY
LINK-USDT$13.77
0.0066878 Eth
$3,413,396.00
220,134.066 LINK
0.5355%
31
Dex-Trade
LINK-USDT$13.83
0.0067044 Eth
$3,188,864.00
230,563.310 LINK
0.5609%
32
CoinEx
LINK-USDT$13.55
0.0066642 Eth
$3,011,871.00
196,291.487 LINK
0.4775%
33
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.82
0.0066990 Eth
$2,806,068.00
197,328.167 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.4800%
34
Coinbase Exchange
LINK-EUR$13.85
0.0067134 Eth
$2,306,409.00
166,536.030 LINK
0.4051%
35
Hibt
LINK-USDT$13.76
0.0066844 Eth
$2,198,897.00
144,286.411 LINK
0.3510%
36
PointPay
LINK-USDT$13.72
0.0066549 Eth
$2,176,296.00
143,157.309 LINK
0.3482%
37
Biconomy.com
LINK-USDT$13.81
0.0066973 Eth
$2,159,776.00
140,083.579 LINK
0.3408%
38
Coinbase Exchange
LINK-GBP$13.87
0.0067250 Eth
$2,083,479.00
150,180.720 LINK
0.3653%
39
Tokpie
LINK-USDT$13.69
0.0066410 Eth
$1,716,665.00
125,426.017 LINK
0.3051%
40
Binance
LINK-ETH$13.68
0.0066679 Eth
$1,665,631.00
117,750.840 LINK
0.2864%
41
Kraken
LINK-USDT$13.80
0.0066873 Eth
$1,458,109.00
105,695.415 LINK
0.2571%
42
BigONE
LINK-USDT$13.81
0.0066921 Eth
$1,450,409.00
105,060.480 LINK
0.2556%
43
LATOKEN
LINK-BTC$13.80
0.0066924 Eth
$1,436,961.00
104,149.304 LINK
0.2534%
44
FMCPAY
LINK-ETH$13.73
0.0066711 Eth
$1,367,953.00
95,951.200 LINK
0.2334%
45
Kraken
LINK-EUR$13.80
0.0066901 Eth
$1,362,164.00
98,699.080 LINK
0.2401%
46
FMCPAY
LINK-BTC$13.78
0.0066915 Eth
$1,287,787.00
88,141.200 LINK
0.2144%
47
Phemex
LINK-USDT$13.75
0.0066724 Eth
$1,255,747.00
91,316.340 LINK
0.2221%
48
Coinbase Exchange
LINK-USDT$13.88
0.0067279 Eth
$1,217,064.00
87,692.857 LINK
0.2133%
49
EXMO
LINK-USDT$13.82
0.0067036 Eth
$1,127,771.00
81,602.841 LINK
0.1985%
50
Binance
LINK-EUR$13.75
0.0066725 Eth
$886,997.00
57,936.000 LINK
0.1409%
51
Bybit
LINK-USDC$13.83
0.0067038 Eth
$880,842.00
58,868.554 LINK
0.1432%
52
Bitbank
LINK-JPY$13.80
0.0066885 Eth
$872,301.00
63,232.662 LINK
0.1538%
53
EarnBIT
LINK-USDT$13.77
0.0066732 Eth
$841,913.00
55,019.960 LINK
0.1338%
54
BitStorage
LINK-USDT$13.82
0.0067079 Eth
$833,847.00
60,316.290 LINK
0.1467%
55
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.72
0.0066605 Eth
$819,343.00
57,875.033 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1408%
56
Gemini
LINK-USD$13.81
0.0066964 Eth
$776,010.00
56,176.887 LINK
0.1367%
57
WhiteBIT
LINK-BTC$13.80
0.0066969 Eth
$760,996.00
55,136.990 LINK
0.1341%
58
Trubit
LINK-USDT$13.74
0.0066745 Eth
$760,926.00
48,912.700 LINK
0.1190%
59
OKX
LINK-USDC$13.86
0.0067193 Eth
$672,944.00
43,905.823 LINK
0.1068%
60
WhiteBIT
LINK-TRY$13.79
0.0066953 Eth
$665,667.00
48,254.410 LINK
0.1174%
61
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$13.72
0.0066605 Eth
$659,073.00
42,135.144 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1025%
62
Coinbase Exchange
LINK-BTC$13.78
0.0066824 Eth
$645,412.00
46,828.580 LINK
0.1139%
63
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$13.71
0.0066581 Eth
$600,979.00
40,683.706 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0990%
64
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$13.78
0.0066812 Eth
$581,038.00
37,934.440 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0923%
65
Binance
LINK-TRY$13.73
0.0066946 Eth
$566,999.00
36,390.330 LINK
0.0885%
66
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$13.74
0.0066705 Eth
$545,305.00
39,238.460 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0955%
67
tanX
LINK-USDC$13.74
0.0066647 Eth
$525,036.00
32,883.620 LINK
0.0800%
68
XT.COM
LINK-ETH$13.79
0.0066885 Eth
$470,969.00
33,226.020 LINK
0.0808%
69
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$13.76
0.0066730 Eth
$417,947.00
62,616.164 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1523%
70
Hotcoin
LINK-BTC$13.75
0.0066551 Eth
$410,382.00
29,847.930 LINK
0.0726%
71
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.66
0.0066211 Eth
$407,035.00
28,939.776 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0704%
72
BYDFi
LINK-USDC$13.58
0.0066761 Eth
$380,123.00
27,983.310 LINK
0.0681%
73
GMO Japan
LINK-JPY$13.82
0.0066999 Eth
$368,136.00
26,634.900 LINK
0.0648%
74
HashKey Exchange
LINK-USD$13.81
0.0066913 Eth
$367,153.00
24,103.122 LINK
0.0586%
75
BitDelta
LINK-USDT$13.76
0.0066830 Eth
$351,766.00
22,601.000 LINK
0.0550%
76
BitMart
LINK-BTC$13.78
0.0066909 Eth
$343,925.00
24,955.360 LINK
0.0607%
77
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$13.72
0.0066605 Eth
$342,446.00
395,284.710 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.9616%
78
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.79
0.0066827 Eth
$325,308.00
22,799.766 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0555%
79
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.72
0.0066601 Eth
$323,339.00
22,772.177 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0554%
80
BitStorage
LINK-ETH$13.81
0.0066938 Eth
$307,287.00
22,253.920 LINK
0.0541%
81
itBit
LINK-USD$13.76
0.0066704 Eth
$291,658.00
21,196.073 LINK
0.0516%
82
bitcastle
LINK-USDT$13.74
0.0066733 Eth
$284,681.00
18,525.310 LINK
0.0451%
83
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$13.86
0.0067203 Eth
$256,200.00
16,628.311 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0404%
84
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$13.78
0.0066820 Eth
$248,611.00
17,482.419 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0425%
85
Slex
LINK-ETH$13.73
0.0066681 Eth
$235,425.00
16,547.390 LINK
0.0403%
86
Bitkub
LINK-THB$13.87
0.0067320 Eth
$231,393.00
16,687.439 LINK
0.0406%
87
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$13.74
0.0066668 Eth
$214,177.00
13,888.964 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0338%
88
CoinTR
LINK-TRY$13.60
0.0066920 Eth
$188,992.00
11,913.880 LINK
0.0290%
89
Bitget
LINK-USDC$13.82
0.0066990 Eth
$165,302.00
10,468.020 LINK
0.0255%
90
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.79
0.0066867 Eth
$159,890.00
11,203.324 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0273%
91
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$13.86
0.0067273 Eth
$159,643.00
11,767.225 0X5947BB275C521040051D82396192181B413227A3
0.0286%
92
PointPay
LINK-BTC$13.61
0.0066899 Eth
$154,780.00
10,709.951 LINK
0.0261%
93
WhiteBIT
LINK-EUR$13.77
0.0066592 Eth
$146,302.00
10,623.480 LINK
0.0258%
94
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$13.81
0.0066968 Eth
$134,437.00
9,333.014 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0227%
95
KuCoin
LINK-USDC$13.82
0.0067028 Eth
$128,075.00
9,268.286 LINK
0.0225%
96
Kraken
LINK-GBP$13.48
0.0065361 Eth
$127,586.00
9,462.431 LINK
0.0230%
97
BitMart
LINK-ETH$13.76
0.0066691 Eth
$123,324.00
8,963.840 LINK
0.0218%
98
Binance US
LINK-USDT$13.75
0.0066752 Eth
$93,331.00
6,788.052 LINK
0.0165%
99
Foxbit
LINK-BRL$13.48
0.0065633 Eth
$71,489.00
4,710.089 LINK
0.0115%
100
Bittime
LINK-IDR$13.86
0.0067236 Eth
$29,143.00
1,832.440 LINK
0.0045%

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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