ETH Price: $3,492.63 (+1.08%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

727,118 ( 0.083%)

Market

Price

$25.78 @ 0.007381 ETH (+6.27%)

Onchain Market Cap

$25,780,000,000.00

Circulating Supply Market Cap

$16,286,752,386.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0x98382922b43b3e93a8041a3826d17a99578b499d
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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 23336.36% |ETH 0.0003846 1819.14%

Market

Volume (24H):$1,804,803,647.00
Market Capitalization:$16,286,752,386.00
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
Coinbase Exchange
LINK-USD$25.91
0.0074226 Eth
$92,688,955.00
3,578,033.410 LINK
14.0596%
2
Bitget
LINK-USDT$25.82
0.0073959 Eth
$48,480,400.00
1,972,019.266 LINK
7.7489%
3
Bybit
LINK-USDT$25.82
0.0073956 Eth
$40,154,439.00
1,633,124.738 LINK
6.4172%
4
OKX
LINK-USDT$25.81
0.0073927 Eth
$36,051,363.00
1,470,479.320 LINK
5.7781%
5
Gate.io
LINK-USDT$25.81
0.0073915 Eth
$34,449,422.00
1,404,683.560 LINK
5.5196%
6
DigiFinex
LINK-USDT$25.80
0.0073895 Eth
$28,947,486.00
1,122,072.120 LINK
4.4091%
7
CoinW
LINK-USDT$25.93
0.0074357 Eth
$22,005,996.00
848,672.880 LINK
3.3348%
8
WEEX
LINK-USDT$25.78
0.0073913 Eth
$21,618,470.00
884,000.700 LINK
3.4736%
9
FameEX
LINK-USDT$25.82
0.0073956 Eth
$21,156,461.00
863,163.354 LINK
3.3917%
10
Azbit
LINK-USDT$25.89
0.0074172 Eth
$20,984,570.00
856,279.015 LINK
3.3647%
11
Bitunix
LINK-USDT$25.91
0.0074252 Eth
$18,019,571.00
695,222.400 LINK
2.7318%
12
Coinstore
LINK-USDT$25.89
0.0074175 Eth
$17,509,061.00
715,273.050 LINK
2.8106%
13
HTX
LINK-USDT$25.82
0.0073962 Eth
$13,508,559.00
553,900.743 LINK
2.1765%
14
BYDFi
LINK-USDT$25.72
0.0073699 Eth
$12,465,598.00
484,702.730 LINK
1.9046%
15
Binance
LINK-FDUSD$25.87
0.0074140 Eth
$11,973,027.00
488,199.710 LINK
1.9183%
16
BTSE
LINK-USDT$25.81
0.0073935 Eth
$10,506,383.00
407,049.498 LINK
1.5995%
17
KuCoin
LINK-USDT$25.84
0.0074008 Eth
$10,293,032.00
398,399.667 LINK
1.5655%
18
LATOKEN
LINK-USDT$25.91
0.0074266 Eth
$10,240,862.00
395,230.901 LINK
1.5530%
19
Kraken
LINK-USD$25.85
0.0074059 Eth
$9,935,089.00
384,272.675 LINK
1.5100%
20
Coinbase Exchange
LINK-GBP$25.88
0.0074102 Eth
$9,909,197.00
382,939.580 LINK
1.5047%
21
Biconomy.com
LINK-USDT$25.78
0.0073935 Eth
$9,035,568.00
369,805.060 LINK
1.4531%
22
QMall
LINK-USDT$25.87
0.0074008 Eth
$8,188,490.00
334,285.343 LINK
1.3135%
23
Dex-Trade
LINK-USDT$25.80
0.0073971 Eth
$7,448,325.00
288,700.920 LINK
1.1344%
24
Hotcoin
LINK-USDT$25.90
0.0074158 Eth
$6,531,073.00
252,201.450 LINK
0.9910%
25
LBank
LINK-USDT$25.89
0.0074149 Eth
$5,922,790.00
228,748.600 LINK
0.8988%
26
Bitvavo
LINK-EUR$25.85
0.0074045 Eth
$5,710,592.00
220,917.603 LINK
0.8681%
27
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.88
0.0074136 Eth
$5,569,486.00
223,312.134 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.8775%
28
Coinbase Exchange
LINK-EUR$25.91
0.0074226 Eth
$4,062,698.00
156,789.140 LINK
0.6161%
29
FMCPAY
LINK-USDT$25.85
0.0074085 Eth
$3,662,176.00
148,979.253 LINK
0.5854%
30
CoinEx
LINK-USDT$25.84
0.0074053 Eth
$3,655,280.00
148,247.343 LINK
0.5825%
31
PointPay
LINK-USDT$25.83
0.0073990 Eth
$3,373,872.00
137,650.625 LINK
0.5409%
32
Dcoin
LINK-USDT$25.74
0.0073706 Eth
$3,193,708.00
124,095.000 LINK
0.4876%
33
EXMO
LINK-USDT$25.92
0.0074237 Eth
$3,038,771.00
117,255.148 LINK
0.4607%
34
WhiteBIT
LINK-BTC$25.84
0.0074045 Eth
$2,665,021.00
103,145.620 LINK
0.4053%
35
Coinbase Exchange
LINK-USDT$25.85
0.0074091 Eth
$2,554,551.00
98,807.863 LINK
0.3883%
36
Phemex
LINK-USDT$25.89
0.0074208 Eth
$2,410,107.00
93,086.300 LINK
0.3658%
37
WhiteBIT
LINK-TRY$26.04
0.0074607 Eth
$2,290,986.00
87,986.550 LINK
0.3457%
38
FMCPAY
LINK-ETH$25.91
0.0074267 Eth
$1,860,946.00
74,967.680 LINK
0.2946%
39
BitStorage
LINK-USDT$25.87
0.0074105 Eth
$1,840,745.00
71,154.150 LINK
0.2796%
40
FMCPAY
LINK-BTC$25.88
0.0074175 Eth
$1,714,337.00
68,167.223 LINK
0.2679%
41
EarnBIT
LINK-USDT$25.78
0.0073933 Eth
$1,652,952.00
67,522.028 LINK
0.2653%
42
Kraken
LINK-EUR$25.93
0.0074271 Eth
$1,424,437.00
54,937.961 LINK
0.2159%
43
Binance
LINK-TRY$26.02
0.0074529 Eth
$1,323,822.00
53,668.190 LINK
0.2109%
44
Bitbank
LINK-JPY$25.85
0.0074041 Eth
$1,277,612.00
49,420.942 LINK
0.1942%
45
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.73
0.0073700 Eth
$1,272,009.00
51,513.429 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.2024%
46
Bybit
LINK-USDC$25.79
0.0073875 Eth
$1,185,723.00
48,144.397 LINK
0.1892%
47
Koinpark
LINK-USDT$25.91
0.0074217 Eth
$1,153,166.00
44,507.826 LINK
0.1749%
48
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$25.76
0.0073800 Eth
$1,124,992.00
75,081.412 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2950%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$25.90
0.0074187 Eth
$1,110,505.00
43,938.081 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1727%
50
Kraken
LINK-USDT$25.90
0.0074183 Eth
$1,066,600.00
41,185.539 LINK
0.1618%
51
WhiteBIT
LINK-EUR$25.86
0.0074116 Eth
$979,065.00
37,858.380 LINK
0.1488%
52
BigONE
LINK-USDT$25.82
0.0073956 Eth
$948,965.00
36,755.710 LINK
0.1444%
53
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.88
0.0074131 Eth
$930,699.00
37,273.649 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1465%
54
GMO Japan
LINK-JPY$25.93
0.0074266 Eth
$889,805.00
34,320.700 LINK
0.1349%
55
AscendEX (BitMax)
LINK-BTC$26.01
0.0074498 Eth
$861,737.00
33,134.600 LINK
0.1302%
56
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$25.87
0.0074109 Eth
$849,064.00
34,516.047 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1356%
57
Gemini
LINK-USD$25.89
0.0074159 Eth
$816,590.00
31,540.314 LINK
0.1239%
58
KuCoin
LINK-USDC$25.90
0.0074191 Eth
$783,429.00
30,248.153 LINK
0.1189%
59
Binance
LINK-EUR$25.79
0.0073913 Eth
$777,013.00
31,712.460 LINK
0.1246%
60
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$25.89
0.0074166 Eth
$603,718.00
575,041.609 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.2596%
61
itBit
LINK-USD$25.79
0.0073876 Eth
$577,614.00
22,396.831 LINK
0.0880%
62
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$25.90
0.0074187 Eth
$572,826.00
542,861.093 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.1331%
63
BitMart
LINK-BTC$25.80
0.0073905 Eth
$540,286.00
20,941.280 LINK
0.0823%
64
Azbit
LINK-ETH$25.91
0.0074206 Eth
$540,244.00
21,855.541 LINK
0.0859%
65
WEEX
LINK-USDC$25.78
0.0073908 Eth
$500,172.00
19,399.320 LINK
0.0762%
66
Slex
LINK-BTC$25.90
0.0074158 Eth
$440,879.00
17,487.500 LINK
0.0687%
67
Slex
LINK-ETH$25.86
0.0074062 Eth
$429,141.00
17,311.710 LINK
0.0680%
68
Coinbase Exchange
LINK-ETH$25.88
0.0074150 Eth
$419,743.00
16,219.790 LINK
0.0637%
69
Coinbase Exchange
LINK-BTC$25.89
0.0074140 Eth
$412,724.00
15,941.450 LINK
0.0626%
70
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$25.85
0.0074051 Eth
$410,250.00
16,701.470 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0656%
71
HashKey Exchange
LINK-USD$25.66
0.0073704 Eth
$408,025.00
16,678.290 LINK
0.0655%
72
Bitkub
LINK-THB$25.95
0.0074368 Eth
$399,493.00
15,391.933 LINK
0.0605%
73
LATOKEN
LINK-BTC$25.96
0.0074352 Eth
$383,035.00
14,754.471 LINK
0.0580%
74
OKX
LINK-USDC$25.80
0.0073908 Eth
$375,933.00
15,338.626 LINK
0.0603%
75
BitDelta
LINK-USDT$25.88
0.0074180 Eth
$355,991.00
14,561.000 LINK
0.0572%
76
Binance US
LINK-USDT$25.86
0.0074044 Eth
$314,537.00
12,164.835 LINK
0.0478%
77
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$25.94
0.0074292 Eth
$304,151.00
12,072.236 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0474%
78
PointPay
LINK-BTC$25.85
0.0073950 Eth
$287,802.00
11,435.254 LINK
0.0449%
79
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$25.71
0.0073621 Eth
$276,535.00
11,094.037 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0436%
80
BitMart
LINK-ETH$25.79
0.0073869 Eth
$275,585.00
10,686.840 LINK
0.0420%
81
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.83
0.0073985 Eth
$235,985.00
9,453.549 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0371%
82
KuCoin
LINK-BTC$25.81
0.0073924 Eth
$218,560.00
8,469.078 LINK
0.0333%
83
BitStorage
LINK-ETH$25.87
0.0074096 Eth
$215,193.00
8,319.220 LINK
0.0327%
84
Hotcoin
LINK-BTC$25.81
0.0073991 Eth
$213,503.00
8,273.240 LINK
0.0325%
85
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$25.88
0.0074136 Eth
$210,606.00
200,089.792 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.7862%
86
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$25.76
0.0073770 Eth
$196,645.00
7,992.642 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0314%
87
HTX
LINK-BTC$25.96
0.0074366 Eth
$185,434.00
7,309.185 LINK
0.0287%
88
Kraken
LINK-GBP$25.86
0.0074080 Eth
$175,715.00
6,794.420 LINK
0.0267%
89
Bitso
LINK-USD$25.81
0.0073989 Eth
$174,303.00
6,753.036 LINK
0.0265%
90
Kraken
LINK-ETH$25.72
0.0073665 Eth
$170,108.00
6,614.691 LINK
0.0260%
91
BTCMarkets
LINK-AUD$25.68
0.0073558 Eth
$161,796.00
6,300.786 LINK
0.0248%
92
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$25.90
0.0074187 Eth
$148,273.00
6,037.797 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0237%
93
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$25.92
0.0074235 Eth
$141,100.00
5,609.477 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0220%
94
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.74
0.0073730 Eth
$105,823.00
4,296.503 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0169%
95
Kanga
LINK-PLN$25.94
0.0074298 Eth
$96,732.00
0.000 LINK
0.0000%
96
Bitexen
LINK-TRY$25.68
0.0073643 Eth
$92,353.00
3,596.156 LINK
0.0141%
97
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$25.84
0.0074003 Eth
$79,689.00
3,199.164 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0126%
98
Mercado Bitcoin
LINK-BRL$25.87
0.0074098 Eth
$77,961.00
3,013.843 LINK
0.0118%
99
Coins.ph
LINK-PHP$25.93
0.0074284 Eth
$66,861.00
2,728.451 LINK
0.0107%
100
HashKey Global
LINK-USDT$25.83
0.0074020 Eth
$15,672.45
643.415 LINK
0.0025%

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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