ETH Price: $2,367.10 (-4.13%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

722,500 ( 0.018%)

Market

Price

$10.15 @ 0.004288 ETH (-5.72%)

Onchain Market Cap

$10,150,000,000.00

Circulating Supply Market Cap

$6,392,973,318.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0.00135 LINK

Value
$0.01 ( ~4.22457909645547E-06 Eth) [0.0000%]
0xCF9832e039C1920a17EE4ab34A23d3593d11a7ca
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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 9127.27% |ETH 0.0003846 1014.92%

Market

Volume (24H):$430,452,021.00
Market Capitalization:$6,392,973,318.00
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$10.12
0.0042566 Eth
$32,901,975.00
3,127,959.910 LINK
15.8901%
2
WhiteBIT
LINK-USDT$10.18
0.0042777 Eth
$29,103,287.00
2,859,702.960 LINK
14.5274%
3
HTX
LINK-USDT$10.08
0.0042487 Eth
$11,486,164.00
1,086,493.588 LINK
5.5194%
4
Bybit
LINK-USDT$10.12
0.0042681 Eth
$9,713,746.00
922,514.083 LINK
4.6864%
5
Bitget
LINK-USDT$10.12
0.0042681 Eth
$8,947,642.00
845,109.319 LINK
4.2932%
6
Coinbase Exchange
LINK-USD$10.13
0.0042718 Eth
$8,824,430.00
871,376.480 LINK
4.4266%
7
OKX
LINK-USDT$10.08
0.0042481 Eth
$8,080,795.00
769,901.859 LINK
3.9111%
8
P2B
LINK-USDT$10.07
0.0042496 Eth
$6,580,360.00
653,183.180 LINK
3.3182%
9
BTSE
LINK-USDT$10.09
0.0042573 Eth
$6,429,369.00
637,042.896 LINK
3.2362%
10
Ourbit
LINK-USDT$10.14
0.0042533 Eth
$5,895,023.00
559,523.320 LINK
2.8424%
11
Slex
LINK-USDT$10.17
0.0042690 Eth
$5,233,539.00
495,171.640 LINK
2.5155%
12
Upbit
LINK-KRW$10.24
0.0043152 Eth
$4,592,776.00
448,698.246 LINK
2.2794%
13
DigiFinex
LINK-USDT$10.08
0.0042501 Eth
$4,465,764.00
442,971.680 LINK
2.2503%
14
Azbit
LINK-USDT$10.33
0.0042904 Eth
$4,464,016.00
420,059.440 LINK
2.1339%
15
Biconomy.com
LINK-USDT$10.23
0.0042723 Eth
$3,728,508.00
352,818.630 LINK
1.7923%
16
Bitunix
LINK-USDT$10.13
0.0042561 Eth
$3,643,209.00
359,672.480 LINK
1.8271%
17
CoinW
LINK-USDT$10.13
0.0042550 Eth
$3,252,460.00
321,150.370 LINK
1.6315%
18
XT.COM
LINK-USDT$10.23
0.0042682 Eth
$3,197,424.00
303,974.890 LINK
1.5442%
19
Hotcoin
LINK-USDT$10.26
0.0042533 Eth
$2,568,525.00
250,323.110 LINK
1.2716%
20
Coinstore
LINK-USDT$10.16
0.0042616 Eth
$2,262,886.00
215,073.680 LINK
1.0926%
21
Trubit
LINK-USDT$10.16
0.0042642 Eth
$2,210,165.00
209,696.590 LINK
1.0653%
22
LBank
LINK-USDT$10.07
0.0042448 Eth
$1,975,668.00
196,209.570 LINK
0.9968%
23
C-Patex
LINK-USDT$10.08
0.0042515 Eth
$1,969,454.00
195,291.814 LINK
0.9921%
24
KuCoin
LINK-USDT$10.10
0.0042605 Eth
$1,875,747.00
185,714.176 LINK
0.9434%
25
ProBit Global
LINK-USDT$10.13
0.0042594 Eth
$1,775,604.00
175,248.328 LINK
0.8903%
26
AscendEX (BitMax)
LINK-USDT$10.05
0.0042401 Eth
$1,629,022.00
162,061.000 LINK
0.8233%
27
BYDFi
LINK-USDT$10.25
0.0042661 Eth
$1,527,066.00
148,978.060 LINK
0.7568%
28
Binance
LINK-BTC$10.25
0.0042894 Eth
$1,283,212.00
124,164.690 LINK
0.6308%
29
Bitvavo
LINK-EUR$10.17
0.0042597 Eth
$1,141,675.00
112,247.068 LINK
0.5702%
30
Binance
LINK-FDUSD$10.13
0.0042504 Eth
$1,124,845.00
106,985.400 LINK
0.5435%
31
Bithumb
LINK-KRW$10.24
0.0043150 Eth
$1,120,244.00
109,443.974 LINK
0.5560%
32
Dex-Trade
LINK-USDT$10.13
0.0042749 Eth
$1,043,512.00
102,968.710 LINK
0.5231%
33
WhiteBIT
LINK-BTC$10.08
0.0042501 Eth
$1,032,339.00
102,396.610 LINK
0.5202%
34
HashKey Global
LINK-USDT$10.26
0.0042419 Eth
$907,547.00
87,953.748 LINK
0.4468%
35
Azbit
LINK-ETH$10.30
0.0042703 Eth
$756,989.00
72,760.864 LINK
0.3696%
36
Binance
LINK-USDC$10.22
0.0042859 Eth
$702,299.00
66,845.160 LINK
0.3396%
37
Tokpie
LINK-USDT$10.25
0.0043026 Eth
$688,376.00
67,133.152 LINK
0.3410%
38
EXMO
LINK-USDT$10.11
0.0042628 Eth
$648,573.00
64,178.408 LINK
0.3260%
39
LATOKEN
LINK-USDT$10.10
0.0042622 Eth
$647,020.00
64,034.238 LINK
0.3253%
40
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.09
0.0042544 Eth
$587,086.00
57,745.223 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2933%
41
tanX
LINK-USDC$10.14
0.0042603 Eth
$577,105.00
54,380.700 LINK
0.2763%
42
CoinEx
LINK-USDT$10.08
0.0042502 Eth
$574,116.00
54,673.716 LINK
0.2777%
43
AscendEX (BitMax)
LINK-BTC$10.10
0.0042604 Eth
$559,238.00
55,370.100 LINK
0.2813%
44
BigONE
LINK-USDT$10.20
0.0042467 Eth
$463,178.00
45,431.800 LINK
0.2308%
45
PointPay
LINK-USDT$10.11
0.0042570 Eth
$462,083.00
43,914.148 LINK
0.2231%
46
itBit
LINK-USD$10.15
0.0042645 Eth
$458,214.00
45,144.225 LINK
0.2293%
47
Kraken
LINK-USDT$10.08
0.0042484 Eth
$453,351.00
44,970.132 LINK
0.2284%
48
ProBit Global
LINK-BTC$10.11
0.0042572 Eth
$400,223.00
39,584.905 LINK
0.2011%
49
WhiteBIT
LINK-EUR$10.12
0.0042553 Eth
$398,466.00
39,366.360 LINK
0.2000%
50
EarnBIT
LINK-USDT$10.05
0.0042345 Eth
$371,230.00
35,619.429 LINK
0.1809%
51
Bybit
LINK-USDC$10.08
0.0042499 Eth
$359,257.00
33,992.541 LINK
0.1727%
52
Phemex
LINK-USDT$10.17
0.0042675 Eth
$321,883.00
31,635.820 LINK
0.1607%
53
WhiteBIT
LINK-TRY$10.18
0.0042802 Eth
$300,100.00
29,475.670 LINK
0.1497%
54
Coinbase Exchange
LINK-EUR$10.15
0.0042662 Eth
$299,115.00
29,475.040 LINK
0.1497%
55
Coinbase Exchange
LINK-USDT$10.17
0.0042609 Eth
$290,991.00
28,625.501 LINK
0.1454%
56
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$10.14
0.0042731 Eth
$268,513.00
26,347.288 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1338%
57
LATOKEN
LINK-BTC$10.10
0.0042615 Eth
$258,873.00
25,624.235 LINK
0.1302%
58
BitStorage
LINK-USDT$10.15
0.0042651 Eth
$256,387.00
25,256.340 LINK
0.1283%
59
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.11
0.0042606 Eth
$244,290.00
24,044.975 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1221%
60
Binance
LINK-EUR$10.08
0.0042507 Eth
$242,288.00
23,034.290 LINK
0.1170%
61
BitDelta
LINK-USDT$10.14
0.0042752 Eth
$196,514.00
18,659.000 LINK
0.0948%
62
BitMart
LINK-BTC$10.16
0.0042731 Eth
$187,075.00
18,405.000 LINK
0.0935%
63
Slex
LINK-ETH$10.19
0.0042733 Eth
$185,777.00
18,067.110 LINK
0.0918%
64
Binance
LINK-ETH$10.13
0.0042680 Eth
$179,130.00
17,539.500 LINK
0.0891%
65
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$10.09
0.0042544 Eth
$175,340.00
183,348.519 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.9314%
66
Bitbank
LINK-JPY$10.11
0.0042611 Eth
$160,785.00
15,907.479 LINK
0.0808%
67
BYDFi
LINK-USDC$10.20
0.0042722 Eth
$137,348.00
13,464.210 LINK
0.0684%
68
OKX
LINK-USDC$10.08
0.0042474 Eth
$133,261.00
12,666.955 LINK
0.0643%
69
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$10.14
0.0042790 Eth
$131,273.00
12,726.599 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0647%
70
Coinbase Exchange
LINK-GBP$10.09
0.0042549 Eth
$126,922.00
12,575.480 LINK
0.0639%
71
Gemini
LINK-USD$10.09
0.0042542 Eth
$122,118.00
12,101.384 LINK
0.0615%
72
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.14
0.0042746 Eth
$113,413.00
11,184.923 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0568%
73
Bitci TR
LINK-TRY$10.13
0.0042691 Eth
$109,795.00
10,284.030 LINK
0.0522%
74
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$10.15
0.0042792 Eth
$108,681.00
10,226.627 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0520%
75
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$10.07
0.0042458 Eth
$100,905.00
105,701.177 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5370%
76
Binance
LINK-TRY$10.31
0.0043148 Eth
$85,341.00
8,084.960 LINK
0.0411%
77
Bitkub
LINK-THB$10.11
0.0042614 Eth
$77,241.00
7,641.485 LINK
0.0388%
78
Slex
LINK-BTC$10.31
0.0042727 Eth
$76,024.00
7,322.800 LINK
0.0372%
79
Mercado Bitcoin
LINK-BRL$10.27
0.0043233 Eth
$66,507.00
6,472.831 LINK
0.0329%
80
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$10.06
0.0042399 Eth
$66,365.00
6,412.564 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0326%
81
Binance
LINK-BRL$10.17
0.0042856 Eth
$59,417.00
5,631.270 LINK
0.0286%
82
Kraken
LINK-GBP$10.11
0.0042587 Eth
$55,879.00
5,529.378 LINK
0.0281%
83
PointPay
LINK-BTC$10.10
0.0042543 Eth
$50,793.00
4,933.230 LINK
0.0251%
84
Bitso
LINK-USD$10.09
0.0042510 Eth
$46,045.00
4,564.538 LINK
0.0232%
85
BitStorage
LINK-ETH$10.15
0.0042750 Eth
$44,762.00
4,408.750 LINK
0.0224%
86
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.11
0.0042651 Eth
$34,706.00
3,414.201 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0173%
87
Pangolin
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$10.00
0.0042176 Eth
$33,622.00
3,437.090 0X5947BB275C521040051D82396192181B413227A3
0.0175%
88
Bitcointry
LINK-USDT$10.15
0.0042645 Eth
$32,698.00
3,101.232 LINK
0.0158%
89
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$10.09
0.0042522 Eth
$28,306.00
2,760.490 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0140%
90
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$10.23
0.0043160 Eth
$27,997.00
28,978.038 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.1472%
91
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$10.30
0.0043422 Eth
$27,639.00
2,675.544 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0136%
92
Coinone
LINK-KRW$10.24
0.0043135 Eth
$23,659.00
2,311.386 LINK
0.0117%
93
Nonkyc.io
LINK-BTC$10.17
0.0042852 Eth
$22,776.00
2,203.978 LINK
0.0112%
94
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$10.09
0.0042534 Eth
$20,597.00
2,016.565 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0102%
95
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$10.31
0.0042957 Eth
$20,450.00
1,982.840 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0101%
96
CoinEx
LINK-USDC$10.26
0.0042545 Eth
$18,214.80
1,749.715 LINK
0.0089%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$10.13
0.0042688 Eth
$15,930.97
1,566.023 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0080%
98
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD93F7E271CB87C23AAA73EDC008A79646D1F9912$10.32
0.0043487 Eth
$15,135.12
1,473.215 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0075%
99
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$10.01
0.0042190 Eth
$14,390.23
1,460.947 0X5947BB275C521040051D82396192181B413227A3
0.0074%
100
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$10.09
0.0042544 Eth
$12,064.32
1,175.147 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0060%

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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