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ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
729,238 ( -0.073%)
Market
Price
$21.93 @ 0.006347 ETH (-9.36%)
Onchain Market Cap
$21,930,000,000.00
Circulating Supply Market Cap
$13,826,473,546.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | LINK-USDT | $21.88 0.0063250 Eth | $154,713,320.00 6,759,697.970 LINK | 24.8340% |
2 | Coinbase Exchange | LINK-USD | $21.89 0.0063300 Eth | $40,278,009.00 1,840,102.750 LINK | 6.7602% |
3 | Bitget | LINK-USDT | $21.88 0.0063264 Eth | $35,774,284.00 1,562,502.296 LINK | 5.7404% |
4 | Bybit | LINK-USDT | $21.88 0.0063267 Eth | $29,746,725.00 1,298,811.075 LINK | 4.7716% |
5 | MEXC | LINK-USDT | $21.88 0.0063238 Eth | $25,668,619.00 1,173,371.830 LINK | 4.3108% |
6 | Slex | LINK-USDT | $21.94 0.0063471 Eth | $23,236,920.00 991,966.880 LINK | 3.6443% |
7 | P2B | LINK-USDT | $21.93 0.0063354 Eth | $21,940,918.00 1,000,361.640 LINK | 3.6752% |
8 | OKX | LINK-USDT | $21.88 0.0063264 Eth | $20,229,435.00 878,863.401 LINK | 3.2288% |
9 | DigiFinex | LINK-USDT | $21.86 0.0063231 Eth | $18,569,189.00 849,287.390 LINK | 3.1201% |
10 | CoinW | LINK-USDT | $21.93 0.0063301 Eth | $15,985,496.00 728,848.250 LINK | 2.6777% |
11 | FameEX | LINK-USDT | $21.95 0.0063465 Eth | $15,401,840.00 672,943.972 LINK | 2.4723% |
12 | Azbit | LINK-USDT | $21.89 0.0063293 Eth | $15,391,432.00 672,184.365 LINK | 2.4695% |
13 | XT.COM | LINK-USDT | $21.94 0.0063383 Eth | $15,356,849.00 670,018.400 LINK | 2.4615% |
14 | Coinstore | LINK-USDT | $21.93 0.0063353 Eth | $12,393,933.00 538,421.570 LINK | 1.9781% |
15 | Bitunix | LINK-USDT | $21.89 0.0063300 Eth | $11,139,964.00 508,816.230 LINK | 1.8693% |
16 | HTX | LINK-USDT | $21.85 0.0063238 Eth | $10,735,414.00 459,390.785 LINK | 1.6877% |
17 | BYDFi | LINK-USDT | $21.88 0.0063264 Eth | $8,671,462.00 396,400.020 LINK | 1.4563% |
18 | Binance | LINK-FDUSD | $21.88 0.0063289 Eth | $8,630,261.00 376,276.000 LINK | 1.3824% |
19 | LATOKEN | LINK-USDT | $21.87 0.0063242 Eth | $7,573,627.00 346,225.879 LINK | 1.2720% |
20 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $21.87 0.0063291 Eth | $7,521,051.00 342,235.822 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 1.2573% |
21 | LBank | LINK-USDT | $21.90 0.0063318 Eth | $7,248,767.00 331,068.000 LINK | 1.2163% |
22 | Binance | LINK-USDC | $21.87 0.0063244 Eth | $6,773,517.00 296,550.770 LINK | 1.0895% |
23 | Hotcoin | LINK-USDT | $21.95 0.0063453 Eth | $6,428,890.00 292,949.490 LINK | 1.0762% |
24 | QMall | LINK-USDT | $21.89 0.0063292 Eth | $6,185,859.00 270,593.344 LINK | 0.9941% |
25 | Kraken | LINK-USD | $21.90 0.0063387 Eth | $5,381,434.00 245,727.563 LINK | 0.9028% |
26 | KuCoin | LINK-USDT | $21.87 0.0063242 Eth | $4,631,964.00 211,813.422 LINK | 0.7782% |
27 | Dex-Trade | LINK-USDT | $21.87 0.0063233 Eth | $3,866,717.00 176,790.610 LINK | 0.6495% |
28 | BTSE | LINK-USDT | $21.96 0.0063550 Eth | $3,257,345.00 148,326.661 LINK | 0.5449% |
29 | Coinbase Exchange | LINK-BTC | $21.90 0.0063314 Eth | $3,237,378.00 147,809.970 LINK | 0.5430% |
30 | FMCPAY | LINK-USDT | $21.90 0.0063285 Eth | $2,967,463.00 127,850.494 LINK | 0.4697% |
31 | CoinEx | LINK-USDT | $21.87 0.0063231 Eth | $2,826,579.00 122,537.984 LINK | 0.4502% |
32 | Biconomy.com | LINK-USDT | $21.90 0.0063343 Eth | $2,776,742.00 119,748.840 LINK | 0.4399% |
33 | Bitvavo | LINK-EUR | $21.91 0.0063352 Eth | $2,681,057.00 122,388.592 LINK | 0.4496% |
34 | PointPay | LINK-USDT | $21.89 0.0063274 Eth | $2,431,873.00 106,515.730 LINK | 0.3913% |
35 | Coinbase Exchange | LINK-EUR | $21.93 0.0063385 Eth | $2,204,417.00 100,539.540 LINK | 0.3694% |
36 | EXMO | LINK-USDT | $21.88 0.0063269 Eth | $1,832,376.00 83,753.539 LINK | 0.3077% |
37 | Dcoin | LINK-USDT | $21.91 0.0063375 Eth | $1,759,883.00 80,305.000 LINK | 0.2950% |
38 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $21.98 0.0063575 Eth | $1,724,273.00 77,973.237 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.2865% |
39 | ProBit Global | LINK-USDT | $21.90 0.0063321 Eth | $1,635,463.00 74,670.817 LINK | 0.2743% |
40 | Phemex | LINK-USDT | $21.91 0.0063337 Eth | $1,500,061.00 68,453.450 LINK | 0.2515% |
41 | itBit | LINK-USD | $21.98 0.0063521 Eth | $1,419,096.00 64,563.050 LINK | 0.2372% |
42 | FMCPAY | LINK-BTC | $21.91 0.0063332 Eth | $1,340,591.00 59,530.100 LINK | 0.2187% |
43 | tanX | LINK-USDC | $21.90 0.0063336 Eth | $1,289,771.00 55,152.130 LINK | 0.2026% |
44 | FMCPAY | LINK-ETH | $21.90 0.0063305 Eth | $1,281,751.00 57,736.480 LINK | 0.2121% |
45 | OKX | LINK-USDC | $21.86 0.0063232 Eth | $1,182,294.00 50,777.881 LINK | 0.1865% |
46 | Kraken | LINK-EUR | $21.91 0.0063421 Eth | $1,173,490.00 53,555.343 LINK | 0.1968% |
47 | Binance | LINK-EUR | $21.89 0.0063319 Eth | $1,168,269.00 51,419.120 LINK | 0.1889% |
48 | Coinbase Exchange | LINK-GBP | $21.93 0.0063405 Eth | $1,074,669.00 48,998.290 LINK | 0.1800% |
49 | BitStorage | LINK-USDT | $21.95 0.0063447 Eth | $1,053,744.00 48,005.090 LINK | 0.1764% |
50 | Coinbase Exchange | LINK-USDT | $21.90 0.0063322 Eth | $1,052,250.00 48,055.928 LINK | 0.1765% |
51 | BigONE | LINK-USDT | $21.83 0.0063055 Eth | $998,931.00 45,760.240 LINK | 0.1681% |
52 | Bybit | LINK-USDC | $21.88 0.0063270 Eth | $982,064.00 42,872.330 LINK | 0.1575% |
53 | EarnBIT | LINK-USDT | $21.94 0.0063405 Eth | $882,532.00 38,357.358 LINK | 0.1409% |
54 | Gemini | LINK-USD | $21.92 0.0063390 Eth | $850,291.00 38,792.208 LINK | 0.1425% |
55 | Bitbank | LINK-JPY | $22.01 0.0063643 Eth | $839,103.00 38,128.068 LINK | 0.1401% |
56 | Koinpark | LINK-USDT | $21.92 0.0063366 Eth | $759,884.00 34,660.563 LINK | 0.1273% |
57 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $21.98 0.0063554 Eth | $742,449.00 33,937.650 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1247% |
58 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $22.01 0.0063612 Eth | $629,844.00 27,777.167 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.1020% |
59 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $21.92 0.0063381 Eth | $588,389.00 26,545.523 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0975% |
60 | Binance | LINK-TRY | $21.95 0.0063492 Eth | $537,059.00 23,365.930 LINK | 0.0858% |
61 | HashKey Exchange | LINK-USD | $21.91 0.0063307 Eth | $511,291.00 22,204.572 LINK | 0.0816% |
62 | ProBit Global | LINK-BTC | $21.89 0.0063313 Eth | $436,450.00 19,935.233 LINK | 0.0732% |
63 | Coinbase Exchange | LINK-ETH | $21.90 0.0063380 Eth | $435,103.00 19,869.930 LINK | 0.0730% |
64 | Bitbegin | LINK-USDT | $21.88 0.0063334 Eth | $431,882.00 18,464.184 LINK | 0.0678% |
65 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $21.90 0.0063323 Eth | $416,564.00 18,827.605 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0692% |
66 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $21.89 0.0063300 Eth | $387,924.00 16,894.943 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0621% |
67 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $21.89 0.0063311 Eth | $382,674.00 407,239.786 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.4961% |
68 | GMO Japan | LINK-JPY | $22.03 0.0063697 Eth | $380,078.00 17,255.900 LINK | 0.0634% |
69 | Bitkub | LINK-THB | $21.94 0.0063484 Eth | $331,991.00 15,133.352 LINK | 0.0556% |
70 | Coins.ph | LINK-PHP | $21.98 0.0063556 Eth | $317,621.00 14,089.750 LINK | 0.0518% |
71 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $21.89 0.0063303 Eth | $268,430.00 282,876.344 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.0392% |
72 | Hotcoin | LINK-BTC | $21.91 0.0063342 Eth | $241,495.00 11,021.560 LINK | 0.0405% |
73 | Bitci TR | LINK-TRY | $22.09 0.0063883 Eth | $239,535.00 10,193.257 LINK | 0.0374% |
74 | Binance | LINK-BRL | $22.05 0.0063774 Eth | $234,223.00 10,184.370 LINK | 0.0374% |
75 | BitDelta | LINK-USDT | $21.93 0.0063333 Eth | $226,006.00 9,711.000 LINK | 0.0357% |
76 | LATOKEN | LINK-BTC | $21.89 0.0063313 Eth | $193,375.00 8,832.595 LINK | 0.0324% |
77 | Foxbit | LINK-BRL | $22.05 0.0063665 Eth | $185,475.00 8,049.108 LINK | 0.0296% |
78 | Binance US | LINK-USDT | $21.96 0.0063499 Eth | $175,454.00 7,988.457 LINK | 0.0293% |
79 | BitStorage | LINK-ETH | $21.99 0.0063507 Eth | $161,686.00 7,353.970 LINK | 0.0270% |
80 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $21.91 0.0063372 Eth | $155,754.00 7,043.219 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0259% |
81 | PointPay | LINK-BTC | $21.90 0.0063339 Eth | $148,682.00 6,674.110 LINK | 0.0245% |
82 | DeGate | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $21.93 0.0063346 Eth | $148,010.00 6,424.000 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0236% |
83 | BitMart | LINK-ETH | $21.90 0.0063321 Eth | $140,662.00 6,424.080 LINK | 0.0236% |
84 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $21.92 0.0063392 Eth | $128,984.00 5,813.558 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0214% |
85 | KuCoin | LINK-USDC | $21.89 0.0063291 Eth | $106,897.00 4,884.456 LINK | 0.0179% |
86 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $21.92 0.0063381 Eth | $103,336.00 4,487.643 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0165% |
87 | Mercado Bitcoin | LINK-BRL | $22.03 0.0063711 Eth | $95,174.00 4,320.009 LINK | 0.0159% |
88 | Hotcoin | LINK-ETH | $21.90 0.0063332 Eth | $86,820.00 3,964.380 LINK | 0.0146% |
89 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $22.02 0.0063681 Eth | $80,642.00 3,685.840 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0135% |
90 | Nonkyc.io | LINK-BTC | $22.03 0.0063693 Eth | $77,482.00 3,460.721 LINK | 0.0127% |
91 | Bitso | LINK-USD | $21.91 0.0063429 Eth | $73,201.00 3,340.281 LINK | 0.0123% |
92 | PancakeSwap (v2) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $21.91 0.0063359 Eth | $68,160.00 3,025.255 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0111% |
93 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $22.01 0.0063645 Eth | $63,302.00 2,825.326 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0104% |
94 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $22.04 0.0063785 Eth | $63,181.00 2,776.095 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0102% |
95 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $21.98 0.0063575 Eth | $55,326.00 58,137.361 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.2136% |
96 | Bitexen | LINK-TRY | $21.70 0.0062759 Eth | $47,064.00 2,168.688 LINK | 0.0080% |
97 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $21.99 0.0063601 Eth | $29,524.00 39.495 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0001% |
98 | Uniswap V3 (Avalanche) | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $21.98 0.0063562 Eth | $24,587.00 1,134.167 0X5947BB275C521040051D82396192181B413227A3 | 0.0042% |
99 | Dex-Trade | LINK-ETH | $21.96 0.0063411 Eth | $23,030.00 1,048.580 LINK | 0.0039% |
100 | HTX | LINK-BTC | $21.85 0.0063245 Eth | $13,952.02 622.530 LINK | 0.0023% |
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
- Callisto Network - April 14th, 2019 - Security Audit Report
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"data","type":"bytes"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]
Contract Creation Code
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Deployed Bytecode
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Swarm Source
bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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