ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
733,608 ( 0.020%)
Market
Price
$19.43 @ 0.007186 ETH (+3.56%)
Onchain Market Cap
$19,430,000,000.00
Circulating Supply Market Cap
$12,414,955,900.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Coinbase Exchange | LINK-USD | $19.45 0.0072013 Eth | $27,807,103.00 1,429,450.610 LINK | 10.5293% |
2 | Bybit | LINK-USDT | $19.50 0.0072159 Eth | $24,164,727.00 1,266,579.819 LINK | 9.3296% |
3 | HTX | LINK-USDT | $19.48 0.0072052 Eth | $18,548,613.00 973,746.554 LINK | 7.1726% |
4 | Slex | LINK-USDT | $19.43 0.0071943 Eth | $15,593,162.00 819,253.550 LINK | 6.0346% |
5 | P2B | LINK-USDT | $19.44 0.0071968 Eth | $13,755,537.00 707,465.480 LINK | 5.2112% |
6 | WhiteBIT | LINK-USDT | $19.45 0.0072045 Eth | $11,043,187.00 567,671.300 LINK | 4.1815% |
7 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $19.49 0.0072193 Eth | $9,985,931.00 519,526.358 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 3.8268% |
8 | MEXC | LINK-USDT | $19.47 0.0072041 Eth | $8,683,253.00 445,962.200 LINK | 3.2850% |
9 | OKX | LINK-USDT | $19.46 0.0071994 Eth | $8,597,890.00 448,940.784 LINK | 3.3069% |
10 | DigiFinex | LINK-USDT | $19.49 0.0072115 Eth | $8,468,754.00 434,494.810 LINK | 3.2005% |
11 | Gate.io | LINK-USDT | $19.42 0.0071888 Eth | $7,843,175.00 407,653.960 LINK | 3.0028% |
12 | XT.COM | LINK-USDT | $19.46 0.0072033 Eth | $6,661,684.00 348,052.290 LINK | 2.5638% |
13 | Coinstore | LINK-USDT | $19.44 0.0071967 Eth | $6,019,643.00 314,769.630 LINK | 2.3186% |
14 | BTSE | LINK-USDT | $19.40 0.0071850 Eth | $5,151,239.00 265,520.977 LINK | 1.9558% |
15 | CoinW | LINK-USDT | $19.40 0.0071861 Eth | $4,807,238.00 247,752.610 LINK | 1.8249% |
16 | Bitunix | LINK-USDT | $19.44 0.0071979 Eth | $4,803,108.00 247,096.500 LINK | 1.8201% |
17 | Kraken | LINK-USD | $19.46 0.0072012 Eth | $4,798,128.00 246,524.074 LINK | 1.8159% |
18 | Binance | LINK-USDC | $19.47 0.0072040 Eth | $4,703,160.00 245,703.060 LINK | 1.8099% |
19 | Binance | LINK-FDUSD | $19.45 0.0072003 Eth | $4,595,204.00 241,022.550 LINK | 1.7754% |
20 | KuCoin | LINK-USDT | $19.45 0.0071997 Eth | $3,873,465.00 199,136.532 LINK | 1.4668% |
21 | BYDFi | LINK-USDT | $19.49 0.0072115 Eth | $3,799,305.00 194,927.810 LINK | 1.4358% |
22 | Hotcoin | LINK-USDT | $19.41 0.0071899 Eth | $3,744,509.00 192,880.890 LINK | 1.4208% |
23 | Bitvavo | LINK-EUR | $19.44 0.0071966 Eth | $3,741,430.00 192,488.500 LINK | 1.4179% |
24 | LATOKEN | LINK-USDT | $19.44 0.0072000 Eth | $3,255,125.00 167,421.179 LINK | 1.2332% |
25 | Coinbase Exchange | LINK-EUR | $19.46 0.0072030 Eth | $3,079,003.00 158,220.120 LINK | 1.1655% |
26 | QMall | LINK-USDT | $19.44 0.0071980 Eth | $2,738,390.00 143,035.508 LINK | 1.0536% |
27 | FMCPAY | LINK-USDT | $19.39 0.0071826 Eth | $2,223,454.00 116,223.510 LINK | 0.8561% |
28 | Dex-Trade | LINK-USDT | $19.45 0.0071995 Eth | $2,180,152.00 112,096.880 LINK | 0.8257% |
29 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.39 0.0071770 Eth | $1,688,986.00 88,069.498 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.6487% |
30 | Biconomy.com | LINK-USDT | $19.40 0.0071845 Eth | $1,494,829.00 78,237.580 LINK | 0.5763% |
31 | Coinbase Exchange | LINK-GBP | $19.51 0.0072178 Eth | $1,483,741.00 76,058.840 LINK | 0.5603% |
32 | CoinEx | LINK-USDT | $19.45 0.0071997 Eth | $1,479,366.00 77,401.105 LINK | 0.5701% |
33 | FMCPAY | LINK-ETH | $19.39 0.0071813 Eth | $1,307,825.00 68,139.680 LINK | 0.5019% |
34 | Coinbase Exchange | LINK-ETH | $19.42 0.0071887 Eth | $1,151,395.00 59,284.000 LINK | 0.4367% |
35 | PointPay | LINK-USDT | $19.42 0.0071907 Eth | $1,112,489.00 58,115.334 LINK | 0.4281% |
36 | FMCPAY | LINK-BTC | $19.42 0.0071902 Eth | $1,089,031.00 56,891.400 LINK | 0.4191% |
37 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.62 0.0072671 Eth | $1,054,568.00 55,112.971 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.4060% |
38 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $19.49 0.0072193 Eth | $959,241.00 97,529.736 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.7184% |
39 | Trubit | LINK-USDT | $19.39 0.0071797 Eth | $857,028.00 44,983.750 LINK | 0.3314% |
40 | tanX | LINK-USDC | $19.45 0.0071947 Eth | $820,291.00 43,009.750 LINK | 0.3168% |
41 | Phemex | LINK-USDT | $19.44 0.0071961 Eth | $749,330.00 38,549.390 LINK | 0.2840% |
42 | EXMO | LINK-USDT | $19.46 0.0072039 Eth | $721,868.00 37,090.179 LINK | 0.2732% |
43 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $19.46 0.0072019 Eth | $573,387.00 29,008.333 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.2137% |
44 | Bitbank | LINK-JPY | $19.43 0.0071965 Eth | $567,543.00 29,208.273 LINK | 0.2151% |
45 | BitStorage | LINK-USDT | $19.43 0.0071922 Eth | $548,525.00 28,233.440 LINK | 0.2080% |
46 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.41 0.0071874 Eth | $545,042.00 28,310.598 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2085% |
47 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $19.47 0.0072117 Eth | $525,593.00 26,950.870 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1985% |
48 | Binance | LINK-TRY | $19.47 0.0072043 Eth | $509,005.00 26,704.490 LINK | 0.1967% |
49 | BigONE | LINK-USDT | $19.42 0.0071909 Eth | $492,674.00 25,368.380 LINK | 0.1869% |
50 | GMO Japan | LINK-JPY | $19.41 0.0071849 Eth | $490,967.00 25,292.700 LINK | 0.1863% |
51 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $19.48 0.0072102 Eth | $447,051.00 23,498.451 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1731% |
52 | EarnBIT | LINK-USDT | $19.45 0.0071953 Eth | $416,787.00 21,771.662 LINK | 0.1604% |
53 | WhiteBIT | LINK-BTC | $19.46 0.0072054 Eth | $399,341.00 20,525.400 LINK | 0.1512% |
54 | QMall | LINK-USDC | $19.45 0.0071999 Eth | $387,311.00 20,247.286 LINK | 0.1491% |
55 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.42 0.0071886 Eth | $382,276.00 19,901.913 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1466% |
56 | Gemini | LINK-USD | $19.47 0.0072054 Eth | $361,499.00 18,562.664 LINK | 0.1367% |
57 | HashKey Exchange | LINK-USD | $19.53 0.0072308 Eth | $341,274.00 17,837.659 LINK | 0.1314% |
58 | OKX | LINK-USDC | $19.47 0.0072032 Eth | $324,044.00 16,907.288 LINK | 0.1245% |
59 | Slex | LINK-ETH | $19.44 0.0071967 Eth | $294,477.00 15,357.420 LINK | 0.1131% |
60 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.48 0.0072102 Eth | $292,945.00 286,294.571 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 2.1088% |
61 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.43 0.0071942 Eth | $284,475.00 14,753.288 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1087% |
62 | BitMart | LINK-BTC | $19.43 0.0071918 Eth | $267,349.00 13,761.000 LINK | 0.1014% |
63 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $19.47 0.0072086 Eth | $245,050.00 12,920.945 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0952% |
64 | BitDelta | LINK-USDT | $19.41 0.0071896 Eth | $244,458.00 12,847.000 LINK | 0.0946% |
65 | WhiteBIT | LINK-TRY | $19.48 0.0072134 Eth | $184,560.00 9,475.520 LINK | 0.0698% |
66 | Bitkub | LINK-THB | $19.39 0.0071755 Eth | $181,053.00 9,339.417 LINK | 0.0688% |
67 | LATOKEN | LINK-BTC | $19.45 0.0071963 Eth | $171,413.00 8,812.076 LINK | 0.0649% |
68 | CoinTR | LINK-TRY | $19.43 0.0071928 Eth | $162,673.00 8,549.390 LINK | 0.0630% |
69 | Coinbase Exchange | LINK-BTC | $19.42 0.0071854 Eth | $161,833.00 8,333.180 LINK | 0.0614% |
70 | DeGate | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $19.37 0.0071741 Eth | $145,988.00 7,695.607 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0567% |
71 | bitcastle | LINK-USDT | $19.45 0.0071985 Eth | $143,908.00 7,525.590 LINK | 0.0554% |
72 | Hotcoin | LINK-BTC | $19.42 0.0071906 Eth | $131,948.00 6,795.980 LINK | 0.0501% |
73 | Binance US | LINK-USDT | $19.43 0.0071972 Eth | $120,355.00 6,193.383 LINK | 0.0456% |
74 | BitStorage | LINK-ETH | $19.43 0.0071918 Eth | $118,882.00 6,118.470 LINK | 0.0451% |
75 | BYDFi | LINK-USDC | $19.38 0.0071776 Eth | $117,696.00 6,072.850 LINK | 0.0447% |
76 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $19.38 0.0071778 Eth | $110,437.00 5,813.816 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0428% |
77 | KuCoin | LINK-USDC | $19.49 0.0072136 Eth | $106,142.00 5,446.345 LINK | 0.0401% |
78 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $19.39 0.0071770 Eth | $94,303.00 91,939.796 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.6772% |
79 | PancakeSwap (v2) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $19.44 0.0071965 Eth | $91,254.00 4,691.021 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0346% |
80 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $19.40 0.0071828 Eth | $89,959.00 4,696.490 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0346% |
81 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $19.37 0.0071707 Eth | $88,390.00 4,650.178 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0343% |
82 | Bitso | LINK-USD | $19.44 0.0071945 Eth | $88,240.00 4,539.747 LINK | 0.0334% |
83 | BitMart | LINK-ETH | $19.41 0.0071873 Eth | $71,834.00 3,701.200 LINK | 0.0273% |
84 | Uniswap V4 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.40 0.0071836 Eth | $68,339.00 67,032.300 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.4938% |
85 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $19.38 0.0071786 Eth | $65,668.00 3,461.036 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0255% |
86 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $19.44 0.0071939 Eth | $54,542.00 2,829.064 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0208% |
87 | Uniswap V4 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.45 0.0072020 Eth | $53,372.00 2,774.100 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0204% |
88 | Hotcoin | LINK-ETH | $19.46 0.0072005 Eth | $36,444.00 1,872.510 LINK | 0.0138% |
89 | Binance US | LINK-BTC | $19.47 0.0072151 Eth | $34,904.00 1,792.566 LINK | 0.0132% |
90 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $19.47 0.0072113 Eth | $24,674.00 1,264.254 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0093% |
91 | Dex-Trade | LINK-ETH | $19.37 0.0071848 Eth | $15,835.05 817.450 LINK | 0.0060% |
92 | Uniswap V4 (Arbitrum) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $19.37 0.0071736 Eth | $15,570.61 819.193 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0060% |
93 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $19.51 0.0072270 Eth | $14,626.55 21.203 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0002% |
94 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $19.45 0.0071980 Eth | $14,301.66 727.941 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0054% |
95 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.46 0.0072006 Eth | $13,562.25 13,267.100 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.0977% |
96 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.41 0.0071836 Eth | $13,129.46 684.485 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0050% |
97 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $19.45 0.0071968 Eth | $12,455.56 643.183 0X5947BB275C521040051D82396192181B413227A3 | 0.0047% |
98 | Uniswap V3 (Arbitrum One) | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $19.35 0.0071580 Eth | $11,132.97 43.115 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.0003% |
99 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $19.46 0.0072017 Eth | $11,062.88 582.700 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0043% |
100 | Pangolin | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $19.44 0.0071964 Eth | $9,507.42 492.664 0X5947BB275C521040051D82396192181B413227A3 | 0.0036% |
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
- 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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