ETH Price: $3,055.60 (-7.62%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

730,998 ( 0.011%)

Market

Price

$22.55 @ 0.007380 ETH (-10.74%)

Onchain Market Cap

$22,550,000,000.00

Circulating Supply Market Cap

$14,339,358,346.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
1.9227281 LINK

Value
$43.36 ( ~0.0141903395848111 Eth) [0.0000%]
0xddfd0c850fbf6b2d13d7b8aa93ca426b7f999713
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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 20400% |ETH 0.0003846 1818.88%

Market

Volume (24H):$1,270,353,316.00
Market Capitalization:$14,339,358,346.00
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$22.45
0.0073409 Eth
$184,373,208.00
7,681,572.700 LINK
22.9376%
2
Coinbase Exchange
LINK-USD$22.47
0.0073343 Eth
$77,972,748.00
3,470,545.590 LINK
10.3632%
3
Bybit
LINK-USDT$22.37
0.0073136 Eth
$62,578,056.00
2,593,940.622 LINK
7.7456%
4
OKX
LINK-USDT$22.37
0.0073123 Eth
$26,041,100.00
1,082,961.488 LINK
3.2338%
5
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$22.47
0.0073337 Eth
$25,727,895.00
1,106,693.299 0X514910771AF9CA656AF840DFF83E8264ECF986CA
3.3046%
6
Slex
LINK-USDT$22.47
0.0073337 Eth
$23,968,017.00
979,152.050 LINK
2.9238%
7
Gate.io
LINK-USDT$22.37
0.0073143 Eth
$23,442,480.00
979,860.180 LINK
2.9259%
8
DigiFinex
LINK-USDT$22.40
0.0073242 Eth
$21,720,633.00
969,575.170 LINK
2.8952%
9
Azbit
LINK-USDT$22.50
0.0073444 Eth
$18,415,525.00
767,278.041 LINK
2.2911%
10
XT.COM
LINK-USDT$22.39
0.0073076 Eth
$18,267,388.00
760,896.730 LINK
2.2721%
11
MEXC
LINK-USDT$22.43
0.0073221 Eth
$17,677,525.00
787,998.170 LINK
2.3530%
12
KuCoin
LINK-USDT$22.39
0.0073198 Eth
$16,533,088.00
738,449.202 LINK
2.2050%
13
Coinstore
LINK-USDT$22.44
0.0073357 Eth
$15,374,328.00
638,215.210 LINK
1.9057%
14
HTX
LINK-USDT$22.40
0.0073188 Eth
$14,938,294.00
616,509.971 LINK
1.8409%
15
Binance
LINK-FDUSD$22.43
0.0073340 Eth
$14,693,752.00
605,800.630 LINK
1.8090%
16
Bitunix
LINK-USDT$22.42
0.0073277 Eth
$13,779,094.00
614,579.690 LINK
1.8352%
17
Kraken
LINK-USD$22.41
0.0073218 Eth
$13,765,074.00
614,208.970 LINK
1.8341%
18
WhiteBIT
LINK-USDT$22.43
0.0073189 Eth
$10,958,142.00
488,590.190 LINK
1.4590%
19
CoinW
LINK-USDT$22.44
0.0073218 Eth
$10,769,396.00
479,828.230 LINK
1.4328%
20
BYDFi
LINK-USDT$22.45
0.0073170 Eth
$9,647,642.00
429,732.360 LINK
1.2832%
21
LATOKEN
LINK-USDT$22.45
0.0073170 Eth
$9,072,147.00
404,098.229 LINK
1.2067%
22
LBank
LINK-USDT$22.42
0.0073188 Eth
$8,468,592.00
377,666.580 LINK
1.1277%
23
Bitget
LINK-USDT$22.40
0.0073225 Eth
$7,920,824.00
331,199.621 LINK
0.9890%
24
BTSE
LINK-USDT$22.40
0.0073222 Eth
$7,817,698.00
349,063.601 LINK
1.0423%
25
Hotcoin
LINK-USDT$22.50
0.0073314 Eth
$7,669,318.00
340,901.970 LINK
1.0180%
26
QMall
LINK-USDT$22.41
0.0073258 Eth
$7,638,120.00
318,644.265 LINK
0.9515%
27
Coinbase Exchange
LINK-EUR$22.48
0.0073385 Eth
$7,037,252.00
313,017.880 LINK
0.9347%
28
Bitvavo
LINK-EUR$22.43
0.0073253 Eth
$5,985,151.00
266,844.039 LINK
0.7968%
29
FMCPAY
LINK-USDT$22.43
0.0073215 Eth
$5,227,662.00
214,374.648 LINK
0.6401%
30
Dex-Trade
LINK-USDT$22.40
0.0073179 Eth
$5,215,318.00
232,835.401 LINK
0.6953%
31
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$22.49
0.0073425 Eth
$4,584,144.00
197,378.954 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.5894%
32
CoinEx
LINK-USDT$22.41
0.0073291 Eth
$4,178,844.00
171,823.563 LINK
0.5131%
33
Biconomy.com
LINK-USDT$22.45
0.0073284 Eth
$3,231,290.00
133,319.070 LINK
0.3981%
34
Coinbase Exchange
LINK-GBP$22.39
0.0073095 Eth
$3,132,861.00
139,891.330 LINK
0.4177%
35
PointPay
LINK-USDT$22.40
0.0073236 Eth
$2,878,084.00
119,437.285 LINK
0.3566%
36
WhiteBIT
LINK-BTC$22.44
0.0073220 Eth
$2,506,494.00
111,709.420 LINK
0.3336%
37
WhiteBIT
LINK-TRY$22.49
0.0073384 Eth
$2,235,015.00
99,386.930 LINK
0.2968%
38
Binance
LINK-ETH$22.53
0.0073476 Eth
$2,227,344.00
95,533.170 LINK
0.2853%
39
Bitbank
LINK-JPY$22.55
0.0073607 Eth
$2,112,837.00
93,704.366 LINK
0.2798%
40
Kraken
LINK-USDT$22.42
0.0073255 Eth
$2,032,664.00
90,653.954 LINK
0.2707%
41
Kraken
LINK-EUR$22.44
0.0073323 Eth
$1,931,406.00
86,057.495 LINK
0.2570%
42
FMCPAY
LINK-BTC$22.42
0.0073188 Eth
$1,813,113.00
76,643.900 LINK
0.2289%
43
FMCPAY
LINK-ETH$22.45
0.0073295 Eth
$1,768,222.00
75,933.760 LINK
0.2267%
44
Phemex
LINK-USDT$22.48
0.0073372 Eth
$1,693,854.00
75,361.480 LINK
0.2250%
45
OKX
LINK-USDC$22.38
0.0073097 Eth
$1,442,389.00
58,701.081 LINK
0.1753%
46
BigONE
LINK-USDT$22.43
0.0073241 Eth
$1,439,899.00
64,198.390 LINK
0.1917%
47
WhiteBIT
LINK-EUR$22.52
0.0073491 Eth
$1,341,248.00
59,555.850 LINK
0.1778%
48
BitStorage
LINK-USDT$22.46
0.0073339 Eth
$1,322,194.00
58,870.900 LINK
0.1758%
49
Binance
LINK-TRY$22.44
0.0073366 Eth
$1,274,973.00
52,136.480 LINK
0.1557%
50
tanX
LINK-USDC$22.48
0.0073378 Eth
$1,257,240.00
51,078.590 LINK
0.1525%
51
EarnBIT
LINK-USDT$22.40
0.0073175 Eth
$1,249,969.00
52,017.089 LINK
0.1553%
52
Binance
LINK-EUR$22.58
0.0073648 Eth
$1,177,568.00
48,672.020 LINK
0.1453%
53
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$22.45
0.0073282 Eth
$1,172,641.00
48,348.635 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1444%
54
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.59
0.0073782 Eth
$1,170,781.00
50,159.808 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1498%
55
Bybit
LINK-USDC$22.41
0.0073270 Eth
$1,125,346.00
46,797.714 LINK
0.1397%
56
Gemini
LINK-USD$22.46
0.0073424 Eth
$1,079,768.00
48,074.599 LINK
0.1436%
57
GMO Japan
LINK-JPY$22.60
0.0073790 Eth
$1,050,717.00
46,497.600 LINK
0.1388%
58
QMall
LINK-USDC$22.38
0.0073077 Eth
$1,011,765.00
42,086.015 LINK
0.1257%
59
EXMO
LINK-USDT$22.43
0.0073226 Eth
$1,002,547.00
44,694.626 LINK
0.1335%
60
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$22.59
0.0073782 Eth
$991,535.00
43,144.203 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1288%
61
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$22.44
0.0073359 Eth
$978,593.00
40,859.073 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1220%
62
Trubit
LINK-USDT$22.40
0.0073220 Eth
$951,867.00
39,183.350 LINK
0.1170%
63
HashKey Exchange
LINK-USD$22.63
0.0073861 Eth
$923,562.00
38,251.437 LINK
0.1142%
64
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$22.32
0.0072864 Eth
$866,757.00
37,263.966 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1113%
65
Coinbase Exchange
LINK-USDT$22.47
0.0073372 Eth
$713,421.00
31,751.047 LINK
0.0948%
66
itBit
LINK-USD$22.43
0.0073209 Eth
$699,287.00
31,176.437 LINK
0.0931%
67
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.56
0.0073656 Eth
$673,161.00
28,646.813 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0855%
68
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$22.38
0.0073161 Eth
$668,206.00
726,606.716 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.1697%
69
LATOKEN
LINK-BTC$22.47
0.0073347 Eth
$631,406.00
28,099.808 LINK
0.0839%
70
XT.COM
LINK-ETH$22.45
0.0073295 Eth
$624,349.00
26,805.390 LINK
0.0800%
71
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.51
0.0073520 Eth
$526,874.00
22,609.902 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0675%
72
BitStorage
LINK-ETH$22.44
0.0073257 Eth
$487,876.00
21,736.890 LINK
0.0649%
73
Coinbase Exchange
LINK-ETH$22.53
0.0073527 Eth
$440,123.00
19,538.940 LINK
0.0583%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$22.40
0.0073168 Eth
$411,672.00
16,911.239 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0505%
75
Slex
LINK-ETH$22.46
0.0073387 Eth
$399,637.00
17,170.440 LINK
0.0513%
76
BitDelta
LINK-USDT$22.44
0.0073365 Eth
$351,786.00
14,542.000 LINK
0.0434%
77
Coinbase Exchange
LINK-BTC$22.42
0.0073194 Eth
$346,069.00
15,434.800 LINK
0.0461%
78
bitcastle
LINK-USDT$22.42
0.0073174 Eth
$343,638.00
14,301.300 LINK
0.0427%
79
Kraken
LINK-GBP$22.51
0.0073550 Eth
$337,577.00
14,995.101 LINK
0.0448%
80
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$22.36
0.0073011 Eth
$316,287.00
12,961.547 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0387%
81
KuCoin
LINK-USDC$22.37
0.0073138 Eth
$312,068.00
13,949.934 LINK
0.0417%
82
Hotcoin
LINK-BTC$22.50
0.0073312 Eth
$304,082.00
13,516.850 LINK
0.0404%
83
BitMart
LINK-BTC$22.40
0.0073226 Eth
$267,443.00
11,940.820 LINK
0.0357%
84
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$22.46
0.0073321 Eth
$263,241.00
10,784.812 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0322%
85
Bitkub
LINK-THB$22.69
0.0074083 Eth
$259,567.00
11,441.213 LINK
0.0342%
86
BYDFi
LINK-USDC$22.44
0.0073340 Eth
$248,484.00
11,075.360 LINK
0.0331%
87
PointPay
LINK-BTC$22.41
0.0073275 Eth
$236,368.00
10,045.833 LINK
0.0300%
88
Mercado Bitcoin
LINK-BRL$22.49
0.0073463 Eth
$213,313.00
9,483.245 LINK
0.0283%
89
KuCoin
LINK-BTC$22.40
0.0073245 Eth
$195,132.00
8,709.913 LINK
0.0260%
90
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$22.47
0.0073377 Eth
$188,008.00
8,077.201 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0241%
91
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$22.49
0.0073425 Eth
$183,758.00
197,667.129 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5902%
92
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$22.48
0.0073425 Eth
$169,173.00
7,230.170 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0216%
93
Binance US
LINK-USDT$22.53
0.0073577 Eth
$164,549.00
7,304.035 LINK
0.0218%
94
Uniswap V2 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$22.60
0.0073775 Eth
$156,564.00
6,712.337 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0200%
95
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$22.36
0.0072985 Eth
$155,098.00
6,610.623 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0197%
96
Bitso
LINK-USD$22.58
0.0073758 Eth
$146,913.00
6,505.460 LINK
0.0194%
97
BitMart
LINK-ETH$22.41
0.0073267 Eth
$96,529.00
4,307.400 LINK
0.0129%
98
Foxbit
LINK-BRL$22.47
0.0073352 Eth
$95,830.00
4,009.144 LINK
0.0120%
99
Dex-Trade
LINK-ETH$22.44
0.0073317 Eth
$65,671.00
2,926.360 LINK
0.0087%
100
OKX
LINK-EUR$22.53
0.0073590 Eth
$22,673.00
961.323 LINK
0.0029%

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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