ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
721,556 (0.00%)
Market
Price
$12.40 @ 0.004678 ETH (-3.16%)
Onchain Market Cap
$12,400,000,000.00
Circulating Supply Market Cap
$7,775,149,437.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | LBank | LINK-USDT | $12.39 0.0046803 Eth | $33,362,973.00 2,692,553.190 LINK | 18.6625% |
2 | Binance | LINK-USDT | $12.41 0.0046878 Eth | $19,643,171.00 1,560,920.210 LINK | 10.8190% |
3 | WhiteBIT | LINK-USDT | $12.41 0.0046890 Eth | $12,733,470.00 1,026,389.390 LINK | 7.1140% |
4 | Bybit | LINK-USDT | $12.38 0.0046746 Eth | $12,083,350.00 959,521.758 LINK | 6.6506% |
5 | Coinbase Exchange | LINK-USD | $12.38 0.0046776 Eth | $10,293,991.00 831,233.100 LINK | 5.7614% |
6 | HTX | LINK-USDT | $12.40 0.0046830 Eth | $9,455,594.00 750,404.186 LINK | 5.2012% |
7 | Bitget | LINK-USDT | $12.40 0.0046852 Eth | $8,978,769.00 712,092.433 LINK | 4.9356% |
8 | Websea | LINK-USDT | $12.41 0.0046859 Eth | $8,571,341.00 0.000 LINK | 0.0000% |
9 | Azbit | LINK-USDT | $12.39 0.0046813 Eth | $6,283,437.00 498,495.930 LINK | 3.4551% |
10 | WEEX | LINK-USDT | $12.37 0.0046769 Eth | $5,708,353.00 452,918.540 LINK | 3.1392% |
11 | Biconomy.com | LINK-USDT | $12.40 0.0046826 Eth | $5,165,573.00 409,731.940 LINK | 2.8399% |
12 | P2B | LINK-USDT | $12.40 0.0046840 Eth | $3,936,441.00 317,434.610 LINK | 2.2002% |
13 | BVOX | LINK-USDT | $12.41 0.0046856 Eth | $3,907,380.00 310,379.446 LINK | 2.1513% |
14 | Slex | LINK-USDT | $12.39 0.0046802 Eth | $3,255,951.00 258,616.980 LINK | 1.7925% |
15 | OKX | LINK-USDT | $12.40 0.0046843 Eth | $3,018,521.00 239,700.954 LINK | 1.6614% |
16 | Upbit | LINK-KRW | $12.38 0.0046746 Eth | $2,476,869.00 200,138.384 LINK | 1.3872% |
17 | DigiFinex | LINK-USDT | $12.40 0.0046818 Eth | $2,446,344.00 197,362.450 LINK | 1.3679% |
18 | Deepcoin | LINK-USDT | $12.40 0.0046839 Eth | $2,272,216.00 178,969.100 LINK | 1.2405% |
19 | KuCoin | LINK-USDT | $12.40 0.0046840 Eth | $2,271,093.00 183,139.073 LINK | 1.2694% |
20 | ProBit Global | LINK-USDT | $12.42 0.0046885 Eth | $2,192,423.00 176,591.900 LINK | 1.2240% |
21 | Trubit | LINK-USDT | $12.42 0.0046913 Eth | $2,041,773.00 162,107.220 LINK | 1.1236% |
22 | XT.COM | LINK-USDT | $12.40 0.0046841 Eth | $1,807,267.00 143,635.580 LINK | 0.9956% |
23 | AscendEX (BitMax) | LINK-USDT | $12.43 0.0046931 Eth | $1,698,778.00 136,721.600 LINK | 0.9476% |
24 | Gate.io | LINK-USDT | $12.38 0.0046766 Eth | $1,634,989.00 130,046.420 LINK | 0.9014% |
25 | C-Patex | LINK-USDT | $12.43 0.0046988 Eth | $1,623,178.00 130,600.632 LINK | 0.9052% |
26 | Crypto.com Exchange | LINK-USDT | $12.40 0.0046825 Eth | $1,458,900.00 117,682.440 LINK | 0.8157% |
27 | CoinW | LINK-USDT | $12.40 0.0046893 Eth | $1,396,184.00 112,565.290 LINK | 0.7802% |
28 | Kraken | LINK-USD | $12.42 0.0046923 Eth | $1,281,047.00 103,121.721 LINK | 0.7148% |
29 | Azbit | LINK-ETH | $12.42 0.0046924 Eth | $1,070,346.00 85,272.597 LINK | 0.5910% |
30 | FMCPAY | LINK-USDT | $12.40 0.0046844 Eth | $1,039,371.00 82,598.753 LINK | 0.5725% |
31 | BYDFi | LINK-USDT | $12.42 0.0046946 Eth | $981,068.00 78,984.750 LINK | 0.5475% |
32 | WhiteBIT | LINK-BTC | $12.41 0.0046893 Eth | $920,845.00 74,220.130 LINK | 0.5144% |
33 | Bitvavo | LINK-EUR | $12.38 0.0046778 Eth | $788,226.00 63,671.318 LINK | 0.4413% |
34 | HashKey Global | LINK-USDT | $12.41 0.0046869 Eth | $692,754.00 54,810.725 LINK | 0.3799% |
35 | Kraken | LINK-USDT | $12.42 0.0046908 Eth | $673,971.00 54,270.475 LINK | 0.3762% |
36 | Dex-Trade | LINK-USDT | $12.42 0.0046954 Eth | $647,489.00 52,134.580 LINK | 0.3614% |
37 | Bybit | LINK-USDC | $12.40 0.0046838 Eth | $631,473.00 50,081.673 LINK | 0.3471% |
38 | HitBTC | LINK-USDT | $12.40 0.0046850 Eth | $629,289.00 49,904.940 LINK | 0.3459% |
39 | FMFW.io | LINK-USDT | $12.43 0.0046933 Eth | $620,155.00 49,907.400 LINK | 0.3459% |
40 | FMCPAY | LINK-BTC | $12.39 0.0046805 Eth | $569,520.00 45,394.500 LINK | 0.3146% |
41 | tanX | LINK-USDC | $12.45 0.0046861 Eth | $529,057.00 41,929.900 LINK | 0.2906% |
42 | FMCPAY | LINK-ETH | $12.40 0.0046834 Eth | $511,730.00 40,738.240 LINK | 0.2824% |
43 | EXMO | LINK-USDT | $12.39 0.0046813 Eth | $413,131.00 33,333.364 LINK | 0.2310% |
44 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $12.40 0.0046843 Eth | $380,837.00 30,405.315 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2107% |
45 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $12.32 0.0046544 Eth | $365,083.00 29,395.483 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.2037% |
46 | Bithumb | LINK-KRW | $12.39 0.0046799 Eth | $354,067.00 28,574.367 LINK | 0.1981% |
47 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $12.39 0.0046781 Eth | $350,022.00 27,913.269 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1935% |
48 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $12.37 0.0046734 Eth | $335,468.00 26,868.039 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.1862% |
49 | PointPay | LINK-USDT | $12.42 0.0046916 Eth | $314,928.00 25,037.826 LINK | 0.1735% |
50 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $12.37 0.0046713 Eth | $311,475.00 24,851.121 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1722% |
51 | CoinEx | LINK-USDT | $12.41 0.0046878 Eth | $300,405.00 23,859.406 LINK | 0.1654% |
52 | Pionex | LINK-USDT | $12.40 0.0046841 Eth | $295,483.00 23,504.750 LINK | 0.1629% |
53 | ProBit Global | LINK-BTC | $12.41 0.0046875 Eth | $287,106.00 23,130.201 LINK | 0.1603% |
54 | LATOKEN | LINK-USDT | $12.40 0.0046835 Eth | $272,677.00 21,986.585 LINK | 0.1524% |
55 | LATOKEN | LINK-BTC | $12.41 0.0046870 Eth | $247,501.00 19,941.468 LINK | 0.1382% |
56 | BigONE | LINK-USDT | $12.39 0.0046803 Eth | $217,726.00 17,571.050 LINK | 0.1218% |
57 | BitMart | LINK-BTC | $12.43 0.0046938 Eth | $190,611.00 15,338.460 LINK | 0.1063% |
58 | Bitci TR | LINK-TRY | $12.39 0.0046787 Eth | $129,687.00 10,264.650 LINK | 0.0711% |
59 | BitDelta | LINK-USDT | $12.41 0.0046875 Eth | $127,407.00 10,114.000 LINK | 0.0701% |
60 | Coinbase Exchange | LINK-BTC | $12.32 0.0046536 Eth | $117,850.00 9,564.610 LINK | 0.0663% |
61 | Slex | LINK-BTC | $12.40 0.0046853 Eth | $117,570.00 9,386.600 LINK | 0.0651% |
62 | Gemini | LINK-USD | $12.40 0.0046828 Eth | $108,017.00 8,712.715 LINK | 0.0604% |
63 | Coinbase Exchange | LINK-ETH | $12.36 0.0046721 Eth | $87,847.00 7,108.600 LINK | 0.0493% |
64 | PointPay | LINK-BTC | $12.42 0.0046930 Eth | $75,702.00 6,044.434 LINK | 0.0419% |
65 | Slex | LINK-ETH | $12.40 0.0046854 Eth | $72,092.00 5,747.840 LINK | 0.0398% |
66 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $12.39 0.0046791 Eth | $62,771.00 5,081.328 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0352% |
67 | Bitget | LINK-EUR | $12.42 0.0046903 Eth | $60,848.00 4,827.650 LINK | 0.0335% |
68 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $12.43 0.0046931 Eth | $56,366.00 57,074.743 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.3956% |
69 | EXMO | LINK-BTC | $12.40 0.0046818 Eth | $46,863.00 3,780.806 LINK | 0.0262% |
70 | OKX | LINK-USDC | $12.40 0.0046843 Eth | $44,338.00 3,515.405 LINK | 0.0244% |
71 | BYDFi | LINK-USDC | $12.35 0.0046701 Eth | $42,734.00 3,461.330 LINK | 0.0240% |
72 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $12.43 0.0046931 Eth | $40,982.00 3,260.610 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0226% |
73 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $12.32 0.0046544 Eth | $37,298.00 38,014.580 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.2635% |
74 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $12.41 0.0046868 Eth | $29,712.00 2,366.975 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0164% |
75 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $12.44 0.0046990 Eth | $28,053.00 2,237.691 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0155% |
76 | Binance US | LINK-USDT | $12.39 0.0046833 Eth | $27,398.00 2,211.108 LINK | 0.0153% |
77 | Ace | LINK-USDT | $12.42 0.0046894 Eth | $25,223.00 1,990.520 LINK | 0.0138% |
78 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $12.36 0.0046698 Eth | $24,948.00 25,394.115 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.1760% |
79 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $12.40 0.0046818 Eth | $22,730.00 1,803.578 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0125% |
80 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $12.36 0.0046672 Eth | $22,241.00 1,783.851 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0124% |
81 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $12.40 0.0046850 Eth | $19,083.54 1,520.979 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0105% |
82 | KuCoin | LINK-KCS | $12.45 0.0047024 Eth | $13,868.17 1,113.700 LINK | 0.0077% |
83 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $12.38 0.0046779 Eth | $12,153.24 972.163 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0067% |
84 | Coinone | LINK-KRW | $12.34 0.0046600 Eth | $10,683.78 865.958 LINK | 0.0060% |
85 | CoinEx | LINK-BTC | $12.36 0.0046701 Eth | $8,718.38 696.698 LINK | 0.0048% |
86 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $12.41 0.0046866 Eth | $7,055.32 563.200 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0039% |
87 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $12.32 0.0046544 Eth | $6,888.68 7,007.806 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0486% |
88 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $12.46 0.0047045 Eth | $6,722.48 533.617 0X5947BB275C521040051D82396192181B413227A3 | 0.0037% |
89 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $12.39 0.0046811 Eth | $3,994.97 316.274 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0022% |
90 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $12.35 0.0046652 Eth | $3,590.00 285.800 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0020% |
91 | Ramses V2 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $12.34 0.0046619 Eth | $3,175.28 254.281 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0018% |
92 | PancakeSwap V3 (Arbitrum) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $12.33 0.0046577 Eth | $2,315.21 185.070 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0013% |
93 | CoinEx | LINK-USDC | $12.39 0.0046813 Eth | $2,285.18 180.463 LINK | 0.0013% |
94 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $12.36 0.0046698 Eth | $1,737.86 138.737 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0010% |
95 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $12.30 0.0046550 Eth | $940.54 75.443 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0005% |
96 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $12.35 0.0046646 Eth | $911.69 73.648 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0005% |
97 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $12.38 0.0046836 Eth | $342.27 348.109 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.0024% |
98 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $12.38 0.0046836 Eth | $320.22 25.576 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0002% |
99 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $12.36 0.0046785 Eth | $182.13 14.453 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0001% |
100 | Balancer V2 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $12.34 0.0046651 Eth | $176.83 13.794 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0001% |
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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