ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
722,247 ( 0.000%)
Market
Price
$11.46 @ 0.004568 ETH (-7.37%)
Onchain Market Cap
$11,460,000,000.00
Circulating Supply Market Cap
$7,186,942,728.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
3,757.0229042946 LINKValue
$43,055.48 ( ~17.1618 Eth) [0.0004%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | LINK-USDT | $11.45 0.0045561 Eth | $31,038,652.00 2,636,686.330 LINK | 17.0774% |
2 | Coinbase Exchange | LINK-USD | $11.46 0.0045613 Eth | $15,448,295.00 1,347,666.010 LINK | 8.7286% |
3 | HTX | LINK-USDT | $11.45 0.0045593 Eth | $12,910,352.00 1,096,115.691 LINK | 7.0994% |
4 | Bitget | LINK-USDT | $11.44 0.0045554 Eth | $9,519,920.00 807,565.219 LINK | 5.2305% |
5 | Bybit | LINK-USDT | $11.46 0.0045596 Eth | $9,363,560.00 797,616.546 LINK | 5.1660% |
6 | OKX | LINK-USDT | $11.45 0.0045559 Eth | $7,717,322.00 658,766.330 LINK | 4.2667% |
7 | BTSE | LINK-USDT | $11.42 0.0045487 Eth | $7,387,955.00 646,933.737 LINK | 4.1901% |
8 | Upbit | LINK-KRW | $11.58 0.0046111 Eth | $6,786,764.00 585,861.214 LINK | 3.7945% |
9 | Gate.io | LINK-USDT | $11.44 0.0045537 Eth | $5,914,860.00 504,674.550 LINK | 3.2687% |
10 | Slex | LINK-USDT | $11.47 0.0045599 Eth | $5,504,045.00 469,153.100 LINK | 3.0386% |
11 | P2B | LINK-USDT | $11.46 0.0045615 Eth | $5,188,580.00 452,818.310 LINK | 2.9328% |
12 | Azbit | LINK-USDT | $11.47 0.0045617 Eth | $4,739,981.00 401,389.290 LINK | 2.5997% |
13 | DigiFinex | LINK-USDT | $11.45 0.0045592 Eth | $4,304,671.00 375,813.340 LINK | 2.4341% |
14 | Biconomy.com | LINK-USDT | $11.46 0.0045593 Eth | $4,058,064.00 344,783.030 LINK | 2.2331% |
15 | XT.COM | LINK-USDT | $11.47 0.0045639 Eth | $3,106,620.00 263,823.170 LINK | 1.7087% |
16 | Bitunix | LINK-USDT | $11.45 0.0045576 Eth | $3,055,673.00 266,909.900 LINK | 1.7287% |
17 | CoinW | LINK-USDT | $11.42 0.0045508 Eth | $2,834,060.00 248,133.080 LINK | 1.6071% |
18 | ProBit Global | LINK-USDT | $11.46 0.0045622 Eth | $2,703,179.00 235,797.977 LINK | 1.5272% |
19 | Hotcoin | LINK-USDT | $11.45 0.0045561 Eth | $2,489,339.00 217,486.750 LINK | 1.4086% |
20 | Trubit | LINK-USDT | $11.44 0.0045582 Eth | $2,337,706.00 199,379.010 LINK | 1.2913% |
21 | KuCoin | LINK-USDT | $11.45 0.0045588 Eth | $2,302,797.00 201,061.834 LINK | 1.3022% |
22 | Coinstore | LINK-USDT | $11.44 0.0045546 Eth | $2,194,527.00 186,244.380 LINK | 1.2063% |
23 | LBank | LINK-USDT | $11.45 0.0045558 Eth | $2,060,435.00 179,984.650 LINK | 1.1657% |
24 | AscendEX (BitMax) | LINK-USDT | $11.46 0.0045603 Eth | $1,686,373.00 147,189.300 LINK | 0.9533% |
25 | BYDFi | LINK-USDT | $11.43 0.0045537 Eth | $1,414,746.00 123,788.610 LINK | 0.8018% |
26 | WhiteBIT | LINK-BTC | $11.46 0.0045621 Eth | $1,377,826.00 120,189.300 LINK | 0.7784% |
27 | Bithumb | LINK-KRW | $11.57 0.0046051 Eth | $1,273,644.00 110,083.913 LINK | 0.7130% |
28 | Bitvavo | LINK-EUR | $11.47 0.0045671 Eth | $1,143,355.00 99,651.355 LINK | 0.6454% |
29 | CoinEx | LINK-USDT | $11.46 0.0045612 Eth | $1,108,193.00 93,274.463 LINK | 0.6041% |
30 | HashKey Global | LINK-USDT | $11.46 0.0045590 Eth | $1,006,600.00 83,515.266 LINK | 0.5409% |
31 | Dex-Trade | LINK-USDT | $11.46 0.0045598 Eth | $956,101.00 83,464.310 LINK | 0.5406% |
32 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $11.44 0.0045546 Eth | $935,504.00 81,428.181 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.5274% |
33 | Azbit | LINK-ETH | $11.47 0.0045665 Eth | $837,448.00 72,814.346 LINK | 0.4716% |
34 | LATOKEN | LINK-BTC | $11.45 0.0045588 Eth | $619,215.00 54,065.572 LINK | 0.3502% |
35 | BigONE | LINK-USDT | $11.49 0.0045774 Eth | $617,683.00 53,776.710 LINK | 0.3483% |
36 | EXMO | LINK-USDT | $11.46 0.0045589 Eth | $602,851.00 52,624.873 LINK | 0.3408% |
37 | LATOKEN | LINK-USDT | $11.46 0.0045599 Eth | $589,264.00 51,438.674 LINK | 0.3332% |
38 | AscendEX (BitMax) | LINK-BTC | $11.40 0.0045381 Eth | $555,399.00 48,713.600 LINK | 0.3155% |
39 | PointPay | LINK-USDT | $11.46 0.0045598 Eth | $514,703.00 43,743.698 LINK | 0.2833% |
40 | ProBit Global | LINK-BTC | $11.47 0.0045648 Eth | $481,105.00 41,937.244 LINK | 0.2716% |
41 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.47 0.0045657 Eth | $443,898.00 38,601.041 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2500% |
42 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.44 0.0045520 Eth | $405,366.00 35,381.017 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2292% |
43 | tanX | LINK-USDC | $11.47 0.0045652 Eth | $402,272.00 34,060.690 LINK | 0.2206% |
44 | Gemini | LINK-USD | $11.47 0.0045637 Eth | $366,572.00 31,971.857 LINK | 0.2071% |
45 | EarnBIT | LINK-USDT | $11.49 0.0045678 Eth | $362,863.00 30,980.954 LINK | 0.2007% |
46 | Bybit | LINK-USDC | $11.46 0.0045598 Eth | $325,709.00 27,943.133 LINK | 0.1810% |
47 | itBit | LINK-USD | $11.44 0.0045595 Eth | $321,672.00 28,118.200 LINK | 0.1821% |
48 | Phemex | LINK-USDT | $11.45 0.0045558 Eth | $316,088.00 27,617.450 LINK | 0.1789% |
49 | WhiteBIT | LINK-EUR | $11.46 0.0045621 Eth | $307,097.00 26,788.460 LINK | 0.1735% |
50 | WhiteBIT | LINK-TRY | $11.48 0.0045689 Eth | $285,340.00 24,858.500 LINK | 0.1610% |
51 | Bitbank | LINK-JPY | $11.50 0.0045762 Eth | $256,032.00 22,269.464 LINK | 0.1442% |
52 | GMO Japan | LINK-JPY | $11.50 0.0045767 Eth | $233,345.00 20,293.700 LINK | 0.1314% |
53 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $11.42 0.0045450 Eth | $202,893.00 17,276.089 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.1119% |
54 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $11.47 0.0045657 Eth | $191,936.00 16,363.117 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1060% |
55 | Slex | LINK-BTC | $11.45 0.0045586 Eth | $189,133.00 16,524.100 LINK | 0.1070% |
56 | BitMart | LINK-BTC | $11.47 0.0045657 Eth | $187,259.00 16,322.020 LINK | 0.1057% |
57 | BYDFi | LINK-USDC | $11.46 0.0045601 Eth | $174,309.00 15,215.230 LINK | 0.0985% |
58 | Coinbase Exchange | LINK-GBP | $11.45 0.0045563 Eth | $167,856.00 14,663.750 LINK | 0.0950% |
59 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $11.47 0.0045655 Eth | $159,939.00 162,961.905 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.0555% |
60 | BitDelta | LINK-USDT | $11.46 0.0045596 Eth | $158,503.00 13,440.000 LINK | 0.0870% |
61 | OKX | LINK-USDC | $11.48 0.0045682 Eth | $142,001.00 12,043.059 LINK | 0.0780% |
62 | Bitso | LINK-USD | $11.49 0.0045741 Eth | $139,198.00 12,113.225 LINK | 0.0785% |
63 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $11.44 0.0045527 Eth | $132,218.00 11,527.075 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0747% |
64 | PointPay | LINK-BTC | $11.46 0.0045614 Eth | $121,868.00 10,645.919 LINK | 0.0690% |
65 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.44 0.0045539 Eth | $121,830.00 125,046.215 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.8099% |
66 | Bitci TR | LINK-TRY | $11.45 0.0045561 Eth | $121,730.00 10,306.780 LINK | 0.0668% |
67 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $11.47 0.0045647 Eth | $116,909.00 10,002.483 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0648% |
68 | Binance US | LINK-USDT | $11.47 0.0045599 Eth | $103,207.00 8,999.951 LINK | 0.0583% |
69 | Coinbase Exchange | LINK-ETH | $11.43 0.0045496 Eth | $98,647.00 8,628.760 LINK | 0.0559% |
70 | Slex | LINK-ETH | $11.43 0.0045503 Eth | $98,621.00 8,575.260 LINK | 0.0555% |
71 | Bitkub | LINK-THB | $11.49 0.0045706 Eth | $66,457.00 5,784.854 LINK | 0.0375% |
72 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $11.47 0.0045657 Eth | $57,241.00 4,911.984 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0318% |
73 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $11.44 0.0045546 Eth | $52,582.00 4,526.907 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0293% |
74 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $11.46 0.0045615 Eth | $42,626.00 3,651.202 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0236% |
75 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $11.44 0.0045520 Eth | $36,752.00 37,698.875 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.2442% |
76 | EXMO | LINK-BTC | $11.46 0.0045616 Eth | $34,522.00 3,011.746 LINK | 0.0195% |
77 | Bitcointry | LINK-USDT | $11.47 0.0045650 Eth | $32,779.00 2,749.649 LINK | 0.0178% |
78 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $11.43 0.0045479 Eth | $32,666.00 2,853.807 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0185% |
79 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $11.42 0.0045474 Eth | $30,861.00 2,695.669 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0175% |
80 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $11.43 0.0045506 Eth | $29,615.00 2,568.579 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0166% |
81 | KuCoin | LINK-USDC | $11.48 0.0045696 Eth | $26,034.00 2,267.673 LINK | 0.0147% |
82 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.44 0.0045546 Eth | $20,364.00 20,888.445 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.1353% |
83 | Pangolin | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $11.46 0.0045614 Eth | $18,779.58 1,631.654 0X5947BB275C521040051D82396192181B413227A3 | 0.0106% |
84 | Coinone | LINK-KRW | $11.48 0.0045678 Eth | $16,656.96 1,451.522 LINK | 0.0094% |
85 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $11.46 0.0045614 Eth | $16,082.04 1,392.909 0X5947BB275C521040051D82396192181B413227A3 | 0.0090% |
86 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.46 0.0045611 Eth | $15,410.14 1,341.624 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0087% |
87 | KuCoin | LINK-KCS | $11.49 0.0045715 Eth | $14,872.86 1,294.962 LINK | 0.0084% |
88 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $11.47 0.0045657 Eth | $14,820.13 1,271.103 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0082% |
89 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $11.40 0.0045395 Eth | $13,719.78 22.300 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0001% |
90 | CoinEx | LINK-USDC | $11.41 0.0045404 Eth | $13,566.89 1,188.123 LINK | 0.0077% |
91 | PancakeSwap V3 (BSC) | 0X0E09FABB73BD3ADE0A17ECC321FD13A19E81CE82-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $11.42 0.0045450 Eth | $12,010.92 6,973.674 0X0E09FABB73BD3ADE0A17ECC321FD13A19E81CE82 | 0.0452% |
92 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $11.47 0.0045657 Eth | $10,554.17 913.823 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0059% |
93 | CoinEx | LINK-BTC | $11.43 0.0045477 Eth | $8,041.00 702.234 LINK | 0.0045% |
94 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $11.45 0.0045594 Eth | $7,106.53 607.217 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0039% |
95 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $11.40 0.0045340 Eth | $5,188.16 454.465 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0029% |
96 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $11.47 0.0045651 Eth | $4,984.54 427.699 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0028% |
97 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $11.47 0.0045640 Eth | $4,527.82 31.542 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0002% |
98 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $11.45 0.0045594 Eth | $1,834.47 156.618 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0010% |
99 | Uniswap V3 (Avalanche) | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $11.56 0.0045982 Eth | $1,482.72 127.905 0X5947BB275C521040051D82396192181B413227A3 | 0.0008% |
100 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D | $11.42 0.0045476 Eth | $1,144.68 97.634 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0006% |
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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