ETH Price: $3,142.22 (+0.95%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

732,197 (0.00%)

Market

Price

$23.97 @ 0.007628 ETH (+3.02%)

Onchain Market Cap

$23,970,000,000.00

Circulating Supply Market Cap

$15,280,872,051.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
108.6 LINK

Value
$2,603.14 ( ~0.828439763349824 Eth) [0.0000%]
0x354BE69CfA15e77abd13bF10bCEA00835dFFE0B8
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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 21690.91% |ETH 0.0003846 1883.36%

Market

Volume (24H):$969,190,470.00
Market Capitalization:$15,280,872,051.00
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$23.98
0.0076463 Eth
$125,441,276.00
5,373,350.610 LINK
21.1801%
2
Coinbase Exchange
LINK-USD$23.98
0.0076470 Eth
$64,701,847.00
2,698,383.810 LINK
10.6362%
3
Bybit
LINK-USDT$23.98
0.0076404 Eth
$50,639,447.00
2,173,879.761 LINK
8.5688%
4
OKX
LINK-USDT$24.01
0.0076482 Eth
$26,389,728.00
1,143,661.048 LINK
4.5080%
5
P2B
LINK-USDT$23.96
0.0076416 Eth
$21,520,373.00
898,173.310 LINK
3.5403%
6
DigiFinex
LINK-USDT$24.00
0.0076459 Eth
$17,688,694.00
737,040.390 LINK
2.9052%
7
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.08
0.0076710 Eth
$17,345,448.00
739,932.953 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.9166%
8
Gate.io
LINK-USDT$23.98
0.0076396 Eth
$17,278,960.00
739,931.520 LINK
2.9166%
9
MEXC
LINK-USDT$23.97
0.0076374 Eth
$14,421,065.00
601,557.330 LINK
2.3712%
10
HTX
LINK-USDT$23.95
0.0076360 Eth
$13,974,713.00
599,847.460 LINK
2.3644%
11
XT.COM
LINK-USDT$24.00
0.0076458 Eth
$12,471,341.00
534,203.330 LINK
2.1057%
12
Azbit
LINK-USDT$24.00
0.0076561 Eth
$12,205,066.00
522,830.611 LINK
2.0608%
13
Binance
LINK-FDUSD$24.01
0.0076421 Eth
$10,769,260.00
461,100.800 LINK
1.8175%
14
Kraken
LINK-USD$23.98
0.0076398 Eth
$10,616,768.00
442,749.250 LINK
1.7452%
15
Bitunix
LINK-USDT$24.00
0.0076522 Eth
$10,509,093.00
438,030.250 LINK
1.7266%
16
Coinstore
LINK-USDT$23.97
0.0076368 Eth
$10,164,879.00
435,457.780 LINK
1.7164%
17
Binance
LINK-USDC$24.01
0.0076494 Eth
$10,114,725.00
431,556.030 LINK
1.7011%
18
KuCoin
LINK-USDT$24.00
0.0076465 Eth
$9,758,966.00
406,601.126 LINK
1.6027%
19
CoinW
LINK-USDT$23.94
0.0076357 Eth
$8,429,926.00
352,084.000 LINK
1.3878%
20
BYDFi
LINK-USDT$23.99
0.0076506 Eth
$7,232,081.00
301,440.900 LINK
1.1882%
21
Coinbase Exchange
LINK-EUR$23.99
0.0076425 Eth
$7,107,355.00
296,293.620 LINK
1.1679%
22
BTSE
LINK-USDT$23.94
0.0076358 Eth
$6,491,687.00
271,130.711 LINK
1.0687%
23
LBank
LINK-USDT$23.95
0.0076313 Eth
$6,250,448.00
260,951.470 LINK
1.0286%
24
LATOKEN
LINK-USDT$23.98
0.0076467 Eth
$6,171,009.00
257,318.521 LINK
1.0143%
25
Hotcoin
LINK-USDT$23.97
0.0076472 Eth
$5,885,100.00
245,536.380 LINK
0.9678%
26
QMall
LINK-USDT$23.90
0.0076278 Eth
$5,154,145.00
220,653.239 LINK
0.8697%
27
Bitvavo
LINK-EUR$23.89
0.0076227 Eth
$4,828,653.00
202,088.813 LINK
0.7966%
28
Dex-Trade
LINK-USDT$24.00
0.0076473 Eth
$3,800,361.00
158,331.650 LINK
0.6241%
29
FMCPAY
LINK-USDT$23.99
0.0076506 Eth
$3,581,906.00
153,707.536 LINK
0.6059%
30
Biconomy.com
LINK-USDT$23.94
0.0076353 Eth
$3,394,795.00
147,067.020 LINK
0.5797%
31
CoinEx
LINK-USDT$23.95
0.0076410 Eth
$2,514,568.00
108,163.102 LINK
0.4263%
32
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.78
0.0075829 Eth
$2,302,257.00
98,387.975 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3878%
33
PointPay
LINK-USDT$24.00
0.0076531 Eth
$2,076,087.00
88,861.228 LINK
0.3503%
34
WhiteBIT
LINK-TRY$23.93
0.0076324 Eth
$2,020,854.00
84,457.580 LINK
0.3329%
35
Coinbase Exchange
LINK-GBP$23.98
0.0076389 Eth
$2,018,491.00
84,187.110 LINK
0.3318%
36
FMCPAY
LINK-ETH$23.98
0.0076494 Eth
$1,693,134.00
72,331.840 LINK
0.2851%
37
FMCPAY
LINK-BTC$23.97
0.0076408 Eth
$1,454,721.00
61,659.700 LINK
0.2430%
38
Kraken
LINK-EUR$23.96
0.0076351 Eth
$1,407,344.00
58,726.947 LINK
0.2315%
39
OKX
LINK-USDC$24.00
0.0076439 Eth
$1,338,883.00
57,666.605 LINK
0.2273%
40
EarnBIT
LINK-USDT$23.86
0.0076179 Eth
$1,289,176.00
55,961.252 LINK
0.2206%
41
Binance
LINK-TRY$24.01
0.0076494 Eth
$1,204,888.00
51,629.490 LINK
0.2035%
42
WhiteBIT
LINK-BTC$23.95
0.0076404 Eth
$1,170,058.00
48,849.020 LINK
0.1925%
43
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$24.08
0.0076710 Eth
$1,158,143.00
95,000.759 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3745%
44
EXMO
LINK-USDT$23.97
0.0076361 Eth
$1,155,534.00
48,212.460 LINK
0.1900%
45
Bitbank
LINK-JPY$24.08
0.0076797 Eth
$1,085,548.00
45,079.574 LINK
0.1777%
46
tanX
LINK-USDC$23.96
0.0076439 Eth
$1,039,285.00
44,783.920 LINK
0.1765%
47
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.93
0.0076310 Eth
$1,016,958.00
43,285.859 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1706%
48
Binance
LINK-ETH$23.97
0.0076423 Eth
$997,157.00
42,762.410 LINK
0.1686%
49
WhiteBIT
LINK-EUR$23.96
0.0076407 Eth
$990,981.00
41,362.650 LINK
0.1630%
50
Binance
LINK-EUR$23.95
0.0076292 Eth
$950,080.00
40,683.920 LINK
0.1604%
51
BigONE
LINK-USDT$23.91
0.0076178 Eth
$947,300.00
39,617.040 LINK
0.1562%
52
BitStorage
LINK-USDT$23.96
0.0076503 Eth
$922,219.00
38,494.200 LINK
0.1517%
53
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.92
0.0076268 Eth
$894,254.00
38,232.600 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1507%
54
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.80
0.0075897 Eth
$853,545.00
36,733.822 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1448%
55
Trubit
LINK-USDT$23.98
0.0076463 Eth
$853,113.00
36,636.080 LINK
0.1444%
56
Gemini
LINK-USD$24.00
0.0076446 Eth
$841,547.00
35,071.175 LINK
0.1382%
57
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.87
0.0076136 Eth
$794,289.00
33,936.647 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1338%
58
Coinbase Exchange
LINK-USDT$23.94
0.0076326 Eth
$787,976.00
32,908.708 LINK
0.1297%
59
QMall
LINK-USDC$24.00
0.0076522 Eth
$768,142.00
32,753.497 LINK
0.1291%
60
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.87
0.0076136 Eth
$747,427.00
731,913.543 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.8850%
61
Bybit
LINK-USDC$23.98
0.0076408 Eth
$713,432.00
30,769.208 LINK
0.1213%
62
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.96
0.0076415 Eth
$544,524.00
23,166.129 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0913%
63
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.87
0.0076136 Eth
$528,090.00
22,595.975 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0891%
64
LATOKEN
LINK-BTC$23.89
0.0076258 Eth
$527,109.00
22,067.354 LINK
0.0870%
65
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.92
0.0076269 Eth
$526,563.00
22,306.189 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0879%
66
itBit
LINK-USD$23.99
0.0076429 Eth
$519,873.00
21,670.407 LINK
0.0854%
67
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.91
0.0076248 Eth
$466,575.00
19,920.455 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0785%
68
Coinbase Exchange
LINK-BTC$23.96
0.0076431 Eth
$439,906.00
18,359.340 LINK
0.0724%
69
Coinbase Exchange
LINK-ETH$23.98
0.0076453 Eth
$354,035.00
14,765.160 LINK
0.0582%
70
ProBit Global
LINK-BTC$23.96
0.0076378 Eth
$347,329.00
14,495.732 LINK
0.0571%
71
ProBit Global
LINK-USDT$24.01
0.0076492 Eth
$336,580.00
14,020.916 LINK
0.0553%
72
BitDelta
LINK-USDT$23.95
0.0076384 Eth
$335,297.00
14,383.000 LINK
0.0567%
73
BitMart
LINK-BTC$23.97
0.0076450 Eth
$294,124.00
12,269.420 LINK
0.0484%
74
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.08
0.0076710 Eth
$289,649.00
12,351.915 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0487%
75
GMO Japan
LINK-JPY$24.02
0.0076601 Eth
$289,259.00
12,042.700 LINK
0.0475%
76
HashKey Exchange
LINK-USD$23.86
0.0076123 Eth
$284,490.00
12,212.696 LINK
0.0481%
77
Hotcoin
LINK-BTC$24.00
0.0076623 Eth
$234,190.00
9,757.590 LINK
0.0385%
78
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$24.05
0.0076622 Eth
$228,691.00
9,729.514 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0384%
79
Slex
LINK-ETH$23.99
0.0076549 Eth
$227,774.00
9,713.110 LINK
0.0383%
80
Bitso
LINK-USD$23.97
0.0076480 Eth
$225,394.00
9,402.005 LINK
0.0371%
81
Bitci TR
LINK-TRY$24.13
0.0076886 Eth
$222,812.00
9,561.420 LINK
0.0377%
82
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.99
0.0076537 Eth
$213,535.00
9,081.411 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0358%
83
KuCoin
LINK-USDC$24.02
0.0076522 Eth
$207,332.00
8,631.921 LINK
0.0340%
84
BitStorage
LINK-ETH$23.94
0.0076275 Eth
$203,711.00
8,508.600 LINK
0.0335%
85
PointPay
LINK-BTC$24.03
0.0076636 Eth
$202,660.00
8,591.280 LINK
0.0339%
86
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.78
0.0075775 Eth
$193,240.00
188,472.778 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.7429%
87
BYDFi
LINK-USDC$24.02
0.0076510 Eth
$191,535.00
7,974.740 LINK
0.0314%
88
CoinTR
LINK-TRY$23.97
0.0076400 Eth
$175,278.00
7,526.030 LINK
0.0297%
89
Binance
LINK-BRL$23.81
0.0075866 Eth
$174,477.00
7,474.140 LINK
0.0295%
90
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.92
0.0076265 Eth
$173,738.00
169,602.816 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.6685%
91
Mercado Bitcoin
LINK-BRL$23.77
0.0075730 Eth
$164,377.00
6,915.068 LINK
0.0273%
92
Bitkub
LINK-THB$24.06
0.0076733 Eth
$138,900.00
5,772.885 LINK
0.0228%
93
Kraken
LINK-GBP$23.92
0.0076218 Eth
$137,669.00
5,754.728 LINK
0.0227%
94
Binance US
LINK-USDT$23.97
0.0076430 Eth
$109,403.00
4,564.063 LINK
0.0180%
95
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.78
0.0075775 Eth
$104,673.00
4,472.327 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0176%
96
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.93
0.0076311 Eth
$103,004.00
4,383.701 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0173%
97
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$24.22
0.0077153 Eth
$100,627.00
4,179.137 0X5947BB275C521040051D82396192181B413227A3
0.0165%
98
KuCoin
LINK-BTC$24.01
0.0076503 Eth
$95,152.00
3,962.458 LINK
0.0156%
99
BitMart
LINK-ETH$23.97
0.0076454 Eth
$92,321.00
3,851.020 LINK
0.0152%
100
Dex-Trade
LINK-ETH$23.96
0.0076335 Eth
$31,548.00
1,316.650 LINK
0.0052%

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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