ETH Price: $3,039.58 (+3.03%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

722,772 ( -0.016%)

Market

Price

$13.49 @ 0.004438 ETH (+1.80%)

Onchain Market Cap

$13,490,000,000.00

Circulating Supply Market Cap

$8,453,705,182.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0xb85664a08b29c36c1bdb574ef62af2e5fa15888b
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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 12163.64% |ETH 0.0003846 1053.93%

Market

Volume (24H):$840,034,218.00
Market Capitalization:$8,453,705,182.00
Circulating Supply:626,849,971.00 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$13.50
0.0044422 Eth
$68,576,114.00
5,118,695.290 LINK
14.3589%
2
WhiteBIT
LINK-USDT$13.55
0.0044590 Eth
$62,575,531.00
4,617,752.890 LINK
12.9536%
3
MEXC
LINK-USDT$13.51
0.0044454 Eth
$36,049,473.00
2,669,086.330 LINK
7.4873%
4
Gate.io
LINK-USDT$13.49
0.0044404 Eth
$32,055,124.00
2,395,518.346 LINK
6.7199%
5
Coinbase Exchange
LINK-USD$13.51
0.0044451 Eth
$28,049,477.00
2,076,969.800 LINK
5.8263%
6
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$13.50
0.0044443 Eth
$21,460,977.00
1,561,292.546 0X514910771AF9CA656AF840DFF83E8264ECF986CA
4.3797%
7
HTX
LINK-USDT$13.49
0.0044405 Eth
$14,548,661.00
1,082,251.480 LINK
3.0359%
8
P2B
LINK-USDT$13.49
0.0044389 Eth
$13,564,924.00
1,005,655.660 LINK
2.8210%
9
BTSE
LINK-USDT$13.47
0.0044364 Eth
$12,743,437.00
946,180.048 LINK
2.6542%
10
OKX
LINK-USDT$13.50
0.0044417 Eth
$11,765,746.00
877,132.419 LINK
2.4605%
11
Bybit
LINK-USDT$13.50
0.0044436 Eth
$11,649,600.00
870,256.865 LINK
2.4412%
12
Bitunix
LINK-USDT$13.50
0.0044439 Eth
$11,136,114.00
825,017.840 LINK
2.3143%
13
Bitget
LINK-USDT$13.50
0.0044439 Eth
$10,310,863.00
767,855.942 LINK
2.1540%
14
Hotcoin
LINK-USDT$13.49
0.0044415 Eth
$9,805,275.00
726,974.100 LINK
2.0393%
15
DigiFinex
LINK-USDT$13.50
0.0044436 Eth
$9,092,958.00
673,497.800 LINK
1.8893%
16
Upbit
LINK-KRW$13.41
0.0044137 Eth
$8,868,571.00
661,335.267 LINK
1.8552%
17
Slex
LINK-USDT$13.47
0.0044372 Eth
$7,566,743.00
562,759.190 LINK
1.5786%
18
XT.COM
LINK-USDT$13.55
0.0044583 Eth
$7,065,518.00
527,625.520 LINK
1.4801%
19
Binance
LINK-FDUSD$13.51
0.0044470 Eth
$6,995,809.00
520,765.920 LINK
1.4608%
20
CoinW
LINK-USDT$13.50
0.0044417 Eth
$6,065,668.00
449,472.180 LINK
1.2609%
21
Azbit
LINK-USDT$13.48
0.0044374 Eth
$5,809,408.00
432,379.680 LINK
1.2129%
22
Biconomy.com
LINK-USDT$13.49
0.0044404 Eth
$5,422,684.00
403,676.180 LINK
1.1324%
23
Coinstore
LINK-USDT$13.50
0.0044457 Eth
$4,744,545.00
353,728.120 LINK
0.9923%
24
Binance
LINK-BTC$13.51
0.0044472 Eth
$4,742,938.00
354,101.420 LINK
0.9933%
25
KuCoin
LINK-USDT$13.50
0.0044450 Eth
$4,151,929.00
307,443.480 LINK
0.8624%
26
BYDFi
LINK-USDT$13.47
0.0044350 Eth
$3,373,661.00
250,509.440 LINK
0.7027%
27
LATOKEN
LINK-USDT$13.51
0.0044453 Eth
$3,348,341.00
247,918.981 LINK
0.6955%
28
Kraken
LINK-USD$13.50
0.0044441 Eth
$2,955,998.00
218,920.971 LINK
0.6141%
29
Bithumb
LINK-KRW$13.43
0.0044209 Eth
$2,633,001.00
196,030.984 LINK
0.5499%
30
LBank
LINK-USDT$13.47
0.0044350 Eth
$2,620,188.00
194,554.900 LINK
0.5458%
31
WhiteBIT
LINK-BTC$13.49
0.0044405 Eth
$2,491,105.00
184,675.470 LINK
0.5180%
32
ProBit Global
LINK-USDT$13.50
0.0044439 Eth
$2,453,186.00
181,697.446 LINK
0.5097%
33
Bitvavo
LINK-EUR$13.54
0.0044571 Eth
$2,303,510.00
170,090.707 LINK
0.4771%
34
Dex-Trade
LINK-USDT$13.47
0.0044373 Eth
$2,209,350.00
164,007.900 LINK
0.4601%
35
HashKey Global
LINK-USDT$13.51
0.0044464 Eth
$2,189,057.00
164,013.432 LINK
0.4601%
36
Tokpie
LINK-USDT$13.56
0.0044637 Eth
$2,157,685.00
159,126.040 LINK
0.4464%
37
AscendEX (BitMax)
LINK-USDT$13.48
0.0044373 Eth
$1,770,740.00
131,345.100 LINK
0.3684%
38
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.49
0.0044392 Eth
$1,715,574.00
124,916.874 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3504%
39
Binance
LINK-USDC$13.50
0.0044429 Eth
$1,711,687.00
127,288.300 LINK
0.3571%
40
Trubit
LINK-USDT$13.49
0.0044411 Eth
$1,659,901.00
123,837.830 LINK
0.3474%
41
Kraken
LINK-EUR$13.50
0.0044443 Eth
$1,317,779.00
97,591.270 LINK
0.2738%
42
Azbit
LINK-ETH$13.48
0.0044407 Eth
$1,093,345.00
79,846.725 LINK
0.2240%
43
CoinEx
LINK-USDT$13.47
0.0044361 Eth
$1,025,368.00
76,653.842 LINK
0.2150%
44
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.52
0.0044514 Eth
$1,014,784.00
73,984.268 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2075%
45
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$13.45
0.0044266 Eth
$983,553.00
73,807.124 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2070%
46
LATOKEN
LINK-BTC$13.50
0.0044439 Eth
$946,778.00
70,123.601 LINK
0.1967%
47
WhiteBIT
LINK-TRY$13.57
0.0044661 Eth
$942,939.00
69,477.150 LINK
0.1949%
48
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$13.58
0.0044694 Eth
$880,261.00
63,614.607 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1785%
49
itBit
LINK-USD$13.49
0.0044408 Eth
$873,522.00
64,753.313 LINK
0.1816%
50
PointPay
LINK-USDT$13.47
0.0044355 Eth
$771,936.00
57,617.465 LINK
0.1616%
51
Hotcoin
LINK-BTC$13.49
0.0044421 Eth
$762,116.00
56,487.650 LINK
0.1585%
52
Phemex
LINK-USDT$13.49
0.0044413 Eth
$716,740.00
53,138.310 LINK
0.1491%
53
tanX
LINK-USDC$13.53
0.0044539 Eth
$694,018.00
51,594.270 LINK
0.1447%
54
Coinbase Exchange
LINK-EUR$13.49
0.0044423 Eth
$678,006.00
50,242.800 LINK
0.1409%
55
BigONE
LINK-USDT$13.46
0.0044314 Eth
$640,335.00
47,560.880 LINK
0.1334%
56
AscendEX (BitMax)
LINK-BTC$13.51
0.0044482 Eth
$621,802.00
46,009.800 LINK
0.1291%
57
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$13.47
0.0044335 Eth
$612,603.00
44,818.866 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1257%
58
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$13.49
0.0044389 Eth
$608,681.00
45,278.051 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.1270%
59
WhiteBIT
LINK-EUR$13.47
0.0044342 Eth
$606,960.00
45,060.340 LINK
0.1264%
60
Bitbank
LINK-JPY$13.53
0.0044544 Eth
$583,844.00
43,141.374 LINK
0.1210%
61
Binance
LINK-TRY$13.54
0.0044583 Eth
$574,633.00
42,595.510 LINK
0.1195%
62
EXMO
LINK-USDT$13.49
0.0044402 Eth
$569,471.00
42,214.041 LINK
0.1184%
63
BitStorage
LINK-USDT$13.50
0.0044435 Eth
$551,829.00
40,872.230 LINK
0.1147%
64
EarnBIT
LINK-USDT$13.48
0.0044376 Eth
$518,923.00
38,631.503 LINK
0.1084%
65
WEEX
LINK-USDC$13.48
0.0044382 Eth
$501,494.00
37,209.245 LINK
0.1044%
66
Bybit
LINK-USDC$13.49
0.0044395 Eth
$488,420.00
36,502.412 LINK
0.1024%
67
ProBit Global
LINK-BTC$13.50
0.0044441 Eth
$415,254.00
30,754.621 LINK
0.0863%
68
Binance
LINK-EUR$13.48
0.0044380 Eth
$360,427.00
26,935.430 LINK
0.0756%
69
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$13.58
0.0044708 Eth
$311,321.00
22,657.203 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0636%
70
Binance
LINK-BNB$13.49
0.0044396 Eth
$304,588.00
22,034.934 LINK
0.0618%
71
Gemini
LINK-USD$13.50
0.0044429 Eth
$268,620.00
19,897.802 LINK
0.0558%
72
Slex
LINK-BTC$13.47
0.0044365 Eth
$266,570.00
19,903.800 LINK
0.0558%
73
Slex
LINK-ETH$13.50
0.0044455 Eth
$242,325.00
17,670.460 LINK
0.0496%
74
Coinbase Exchange
LINK-USDT$13.48
0.0044393 Eth
$242,132.00
17,965.370 LINK
0.0504%
75
Bitkub
LINK-THB$13.39
0.0044055 Eth
$239,103.00
17,862.250 LINK
0.0501%
76
BitDelta
LINK-USDT$13.55
0.0044582 Eth
$225,523.00
16,820.000 LINK
0.0472%
77
BitMart
LINK-BTC$13.48
0.0044383 Eth
$217,720.00
16,148.540 LINK
0.0453%
78
Hotcoin
LINK-ETH$13.49
0.0044437 Eth
$215,209.00
15,947.920 LINK
0.0447%
79
Coinbase Exchange
LINK-BTC$13.49
0.0044399 Eth
$195,289.00
14,475.720 LINK
0.0406%
80
Coinbase Exchange
LINK-GBP$13.49
0.0044394 Eth
$188,245.00
13,958.700 LINK
0.0392%
81
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$13.51
0.0044451 Eth
$188,145.00
186,742.845 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.5238%
82
PointPay
LINK-BTC$13.48
0.0044412 Eth
$183,766.00
13,719.955 LINK
0.0385%
83
BYDFi
LINK-USDC$13.49
0.0044388 Eth
$176,973.00
13,121.720 LINK
0.0368%
84
Binance US
LINK-USDT$13.48
0.0044356 Eth
$170,906.00
12,681.861 LINK
0.0356%
85
OKX
LINK-USDC$13.49
0.0044390 Eth
$169,854.00
12,670.991 LINK
0.0355%
86
Coinbase Exchange
LINK-ETH$13.50
0.0044441 Eth
$155,484.00
11,517.300 LINK
0.0323%
87
Bitso
LINK-USD$13.51
0.0044451 Eth
$130,850.00
9,688.048 LINK
0.0272%
88
BitStorage
LINK-ETH$13.49
0.0044403 Eth
$128,653.00
9,537.940 LINK
0.0268%
89
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$13.44
0.0044237 Eth
$125,546.00
9,469.628 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0266%
90
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$13.49
0.0044392 Eth
$123,796.00
123,342.018 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3460%
91
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$13.55
0.0044588 Eth
$102,337.00
7,425.183 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0208%
92
Mercado Bitcoin
LINK-BRL$13.58
0.0044700 Eth
$84,044.00
6,190.470 LINK
0.0174%
93
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$13.52
0.0044514 Eth
$83,904.00
6,254.930 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0175%
94
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$13.49
0.0044419 Eth
$77,233.00
5,637.571 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0158%
95
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$13.47
0.0044346 Eth
$61,885.00
4,615.140 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0129%
96
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$13.48
0.0044374 Eth
$61,722.00
4,610.005 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0129%
97
EXMO
LINK-BTC$13.55
0.0044595 Eth
$55,910.00
4,126.544 LINK
0.0116%
98
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$13.49
0.0044392 Eth
$54,327.00
53,771.387 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.1508%
99
Bitexen
LINK-TRY$13.40
0.0044097 Eth
$34,885.00
2,604.246 LINK
0.0073%
100
KuCoin
LINK-USDC$13.48
0.0044367 Eth
$32,138.00
2,384.147 LINK
0.0067%

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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