ETH Price: $3,337.93 (-1.17%)
Gas: 6.46 Gwei

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

726,075 ( -0.141%)

Market

Price

$23.13 @ 0.006929 ETH (+2.21%)

Onchain Market Cap

$23,130,000,000.00

Circulating Supply Market Cap

$14,581,967,969.00

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
Blockchain.com 1
Balance
4,343.215410880259282318 LINK

Value
$100,458.57 ( ~30.0961 Eth) [0.0004%]
0x23f4569002a5a07f0ecf688142eeb6bcd883eef8
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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 20927.27% |ETH 0.0003846 1701.61%

Market

Volume (24H):$1,312,116,151.00
Market Capitalization:$14,581,967,969.00
Circulating Supply:631,099,972.00 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$23.06
0.0069174 Eth
$136,119,504.00
6,080,802.020 LINK
18.7315%
2
WhiteBIT
LINK-USDT$23.27
0.0069573 Eth
$66,443,209.00
2,855,685.660 LINK
8.7968%
3
Coinbase Exchange
LINK-USD$23.04
0.0069061 Eth
$60,223,850.00
2,614,449.730 LINK
8.0536%
4
Bitget
LINK-USDT$23.03
0.0069018 Eth
$39,268,803.00
1,753,649.786 LINK
5.4020%
5
MEXC
LINK-USDT$23.13
0.0069388 Eth
$37,793,194.00
1,633,897.690 LINK
5.0331%
6
Bybit
LINK-USDT$23.03
0.0069020 Eth
$32,980,576.00
1,473,787.228 LINK
4.5399%
7
OKX
LINK-USDT$23.01
0.0068971 Eth
$24,748,746.00
1,103,562.421 LINK
3.3995%
8
Slex
LINK-USDT$23.03
0.0069013 Eth
$22,796,382.00
1,020,232.600 LINK
3.1428%
9
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.05
0.0069096 Eth
$21,173,885.00
938,730.791 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.8917%
10
WEEX
LINK-USDT$23.09
0.0069147 Eth
$19,387,264.00
867,564.450 LINK
2.6725%
11
DigiFinex
LINK-USDT$23.05
0.0069081 Eth
$18,387,614.00
797,623.760 LINK
2.4570%
12
XT.COM
LINK-USDT$23.02
0.0068997 Eth
$16,231,500.00
724,903.670 LINK
2.2330%
13
BTSE
LINK-USDT$23.01
0.0068947 Eth
$15,682,157.00
681,660.029 LINK
2.0998%
14
FameEX
LINK-USDT$23.09
0.0069286 Eth
$13,599,278.00
607,319.623 LINK
1.8708%
15
Azbit
LINK-USDT$23.05
0.0069072 Eth
$13,487,854.00
602,211.154 LINK
1.8551%
16
HTX
LINK-USDT$23.02
0.0068984 Eth
$12,663,349.00
567,341.733 LINK
1.7477%
17
Coinstore
LINK-USDT$22.98
0.0068869 Eth
$11,758,631.00
525,426.970 LINK
1.6185%
18
Bitunix
LINK-USDT$23.09
0.0069189 Eth
$11,743,340.00
508,516.900 LINK
1.5665%
19
Binance
LINK-FDUSD$23.14
0.0069434 Eth
$11,632,630.00
515,359.210 LINK
1.5875%
20
BYDFi
LINK-USDT$23.03
0.0069051 Eth
$7,939,273.00
344,733.710 LINK
1.0619%
21
Kraken
LINK-USD$23.05
0.0069069 Eth
$7,471,090.00
324,176.012 LINK
0.9986%
22
Biconomy.com
LINK-USDT$23.02
0.0068974 Eth
$7,338,672.00
327,725.290 LINK
1.0095%
23
CoinW
LINK-USDT$23.03
0.0069055 Eth
$7,054,855.00
306,314.150 LINK
0.9436%
24
KuCoin
LINK-USDT$23.03
0.0069030 Eth
$6,674,447.00
289,770.364 LINK
0.8926%
25
LATOKEN
LINK-USDT$23.11
0.0069201 Eth
$6,390,338.00
276,554.825 LINK
0.8519%
26
QMall
LINK-USDT$23.03
0.0069040 Eth
$5,647,877.00
252,232.906 LINK
0.7770%
27
Hotcoin
LINK-USDT$23.04
0.0069060 Eth
$5,581,663.00
242,282.810 LINK
0.7463%
28
LBank
LINK-USDT$23.01
0.0068958 Eth
$5,516,615.00
239,727.510 LINK
0.7385%
29
Binance
LINK-USDC$23.10
0.0069300 Eth
$5,453,150.00
244,447.760 LINK
0.7530%
30
Dex-Trade
LINK-USDT$23.07
0.0069249 Eth
$4,669,099.00
202,375.260 LINK
0.6234%
31
Coinbase Exchange
LINK-EUR$23.00
0.0068936 Eth
$4,169,201.00
181,252.870 LINK
0.5583%
32
Bitvavo
LINK-EUR$23.07
0.0069121 Eth
$3,616,308.00
156,784.394 LINK
0.4830%
33
FMCPAY
LINK-USDT$23.00
0.0068950 Eth
$3,353,750.00
150,072.686 LINK
0.4623%
34
Dcoin
LINK-USDT$23.06
0.0069141 Eth
$3,238,608.00
140,448.000 LINK
0.4326%
35
CoinEx
LINK-USDT$23.10
0.0069320 Eth
$2,507,023.00
111,998.817 LINK
0.3450%
36
WhiteBIT
LINK-TRY$23.10
0.0069260 Eth
$2,503,565.00
108,383.810 LINK
0.3339%
37
ProBit Global
LINK-USDT$23.07
0.0069117 Eth
$2,487,797.00
107,858.957 LINK
0.3323%
38
WhiteBIT
LINK-BTC$23.03
0.0069007 Eth
$2,242,076.00
97,368.480 LINK
0.2999%
39
PointPay
LINK-USDT$23.28
0.0069647 Eth
$2,218,298.00
99,083.199 LINK
0.3052%
40
FMCPAY
LINK-ETH$23.01
0.0068995 Eth
$1,666,414.00
74,005.600 LINK
0.2280%
41
EXMO
LINK-USDT$23.03
0.0069020 Eth
$1,613,351.00
70,053.766 LINK
0.2158%
42
FMCPAY
LINK-BTC$23.03
0.0069050 Eth
$1,465,910.00
65,272.800 LINK
0.2011%
43
Phemex
LINK-USDT$23.06
0.0069141 Eth
$1,453,205.00
63,018.080 LINK
0.1941%
44
Bitbank
LINK-JPY$23.34
0.0069943 Eth
$1,371,562.00
58,769.087 LINK
0.1810%
45
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.07
0.0069179 Eth
$1,349,752.00
59,851.929 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1844%
46
Kraken
LINK-EUR$23.04
0.0069041 Eth
$1,280,955.00
55,604.092 LINK
0.1713%
47
EarnBIT
LINK-USDT$23.09
0.0069185 Eth
$1,195,927.00
53,306.986 LINK
0.1642%
48
tanX
LINK-USDC$23.04
0.0069075 Eth
$1,156,688.00
51,695.270 LINK
0.1592%
49
Nonkyc.io
LINK-USDT$23.17
0.0069503 Eth
$1,148,314.00
51,853.408 LINK
0.1597%
50
BitStorage
LINK-USDT$23.13
0.0069385 Eth
$1,123,529.00
48,571.250 LINK
0.1496%
51
Binance
LINK-TRY$23.16
0.0069354 Eth
$1,099,445.00
48,713.980 LINK
0.1501%
52
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.05
0.0069086 Eth
$1,063,248.00
46,304.510 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1426%
53
KuCoin
LINK-USDC$23.02
0.0068977 Eth
$969,004.00
42,101.417 LINK
0.1297%
54
Trubit
LINK-USDT$23.01
0.0068963 Eth
$959,880.00
43,044.560 LINK
0.1326%
55
BigONE
LINK-USDT$23.09
0.0069186 Eth
$950,185.00
41,159.360 LINK
0.1268%
56
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.04
0.0069074 Eth
$930,898.00
64,831.765 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1997%
57
Binance
LINK-EUR$23.12
0.0069245 Eth
$864,406.00
38,517.760 LINK
0.1187%
58
Bybit
LINK-USDC$23.04
0.0069035 Eth
$836,965.00
37,612.639 LINK
0.1159%
59
WhiteBIT
LINK-EUR$23.01
0.0068981 Eth
$819,890.00
35,634.440 LINK
0.1098%
60
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$22.98
0.0068875 Eth
$762,054.00
33,729.278 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1039%
61
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.10
0.0069257 Eth
$719,428.00
31,969.514 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0985%
62
Koinpark
LINK-USDT$23.03
0.0069027 Eth
$714,734.00
31,029.168 LINK
0.0956%
63
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.09
0.0069228 Eth
$704,720.00
31,134.812 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0959%
64
OKX
LINK-USDC$23.01
0.0068968 Eth
$628,559.00
28,110.074 LINK
0.0866%
65
ProBit Global
LINK-BTC$23.02
0.0069030 Eth
$626,559.00
27,215.424 LINK
0.0838%
66
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.07
0.0069179 Eth
$622,649.00
602,216.374 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.8551%
67
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$22.99
0.0068927 Eth
$615,427.00
27,619.338 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0851%
68
GMO Japan
LINK-JPY$23.15
0.0069416 Eth
$562,645.00
24,301.000 LINK
0.0749%
69
Gemini
LINK-USD$23.02
0.0068996 Eth
$552,960.00
24,015.955 LINK
0.0740%
70
Coinbase Exchange
LINK-USDT$23.16
0.0069414 Eth
$552,739.00
23,862.755 LINK
0.0735%
71
WEEX
LINK-USDC$23.11
0.0069216 Eth
$501,332.00
21,693.333 LINK
0.0668%
72
BitMart
LINK-BTC$23.05
0.0069111 Eth
$430,183.00
18,659.180 LINK
0.0575%
73
BitDelta
LINK-USDT$23.01
0.0068991 Eth
$424,287.00
19,005.000 LINK
0.0585%
74
Coinbase Exchange
LINK-ETH$23.21
0.0069579 Eth
$398,691.00
17,174.700 LINK
0.0529%
75
HashKey Exchange
LINK-USD$23.12
0.0069300 Eth
$394,844.00
17,688.884 LINK
0.0545%
76
Slex
LINK-ETH$23.03
0.0069039 Eth
$393,888.00
17,501.510 LINK
0.0539%
77
Coinbase Exchange
LINK-GBP$23.05
0.0069110 Eth
$327,758.00
14,220.110 LINK
0.0438%
78
Coinbase Exchange
LINK-BTC$23.04
0.0069087 Eth
$290,559.00
12,610.280 LINK
0.0388%
79
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.01
0.0068985 Eth
$280,900.00
12,596.834 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0388%
80
Uniswap V3 (Ethereum)
0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.04
0.0069067 Eth
$256,935.00
785.513 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9
0.0024%
81
LATOKEN
LINK-BTC$23.06
0.0069092 Eth
$253,336.00
10,987.529 LINK
0.0338%
82
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.04
0.0069074 Eth
$223,637.00
10,059.272 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0310%
83
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.10
0.0069254 Eth
$220,376.00
9,796.614 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0302%
84
Binance
LINK-BNB$23.07
0.0069143 Eth
$216,378.00
9,435.394 LINK
0.0291%
85
Bitci TR
LINK-TRY$23.16
0.0069340 Eth
$215,110.00
9,542.130 LINK
0.0294%
86
Hotcoin
LINK-BTC$23.03
0.0069055 Eth
$210,778.00
9,151.220 LINK
0.0282%
87
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$23.04
0.0069065 Eth
$207,404.00
9,207.745 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0284%
88
BitMart
LINK-ETH$23.07
0.0069147 Eth
$206,205.00
8,939.500 LINK
0.0275%
89
PointPay
LINK-BTC$23.03
0.0069027 Eth
$200,703.00
8,890.779 LINK
0.0274%
90
BitStorage
LINK-ETH$23.03
0.0069040 Eth
$186,398.00
8,094.440 LINK
0.0249%
91
Bitso
LINK-USD$23.24
0.0069706 Eth
$183,118.00
7,879.241 LINK
0.0243%
92
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.04
0.0069084 Eth
$182,326.00
8,075.914 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0249%
93
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.01
0.0068989 Eth
$169,731.00
7,618.337 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0235%
94
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$22.96
0.0068851 Eth
$162,182.00
157,916.958 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.4865%
95
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.23
0.0069649 Eth
$155,427.00
6,925.192 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0213%
96
Binance US
LINK-USDT$23.09
0.0069142 Eth
$125,596.00
5,439.509 LINK
0.0168%
97
KuCoin
LINK-BTC$23.04
0.0069052 Eth
$91,896.00
3,988.367 LINK
0.0123%
98
Kraken
LINK-GBP$23.14
0.0069351 Eth
$86,739.00
3,748.362 LINK
0.0115%
99
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.09
0.0069224 Eth
$82,106.00
3,632.552 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0112%
100
Ace
LINK-USDT$23.11
0.0069246 Eth
$5,400.34
241.150 LINK
0.0007%

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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