Overview
Max Total Supply
2,201,696,758.193215234451424519 CRV
Holders
88,611 ( 0.008%)
Market
Price
$1.04 @ 0.000284 ETH (-8.71%)
Onchain Market Cap
$2,284,868,253.99
Circulating Supply Market Cap
$1,297,297,626.59
Other Info
Token Contract (WITH 18 Decimals)
Balance
933.92503260428383886 CRVValue
$969.21 ( ~0.265120630929865 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.053 0.0002881 Eth | $194,271,999.00 181,789,649.400 CRV | 25.4551% |
2 | Websea | CRV-USDT | $1.027 0.0002821 Eth | $101,376,216.00 0.000 CRV | 0.0000% |
3 | WhiteBIT | CRV-USDT | $1.021 0.0002808 Eth | $91,895,951.00 90,020,678.186 CRV | 12.6051% |
4 | OKX | CRV-USDT | $1.05 0.0002874 Eth | $57,041,322.00 53,311,333.511 CRV | 7.4649% |
5 | Gate.io | CRV-USDT | $1.05 0.0002882 Eth | $38,739,315.00 35,802,374.080 CRV | 5.0132% |
6 | Bybit | CRV-USDT | $1.044 0.0002857 Eth | $36,469,040.00 34,314,804.890 CRV | 4.8049% |
7 | Coinbase Exchange | CRV-USD | $1.024 0.0002812 Eth | $30,710,189.00 30,005,069.640 CRV | 4.2015% |
8 | HTX | CRV-USDT | $1.043 0.0002855 Eth | $28,973,821.00 26,894,138.729 CRV | 3.7658% |
9 | Bitget | CRV-USDT | $1.051 0.0002885 Eth | $26,452,755.00 25,084,560.065 CRV | 3.5125% |
10 | Bitunix | CRV-USDT | $1.033 0.0002830 Eth | $24,626,995.00 23,848,301.300 CRV | 3.3394% |
11 | Slex | CRV-USDT | $1.047 0.0002875 Eth | $16,970,454.00 15,592,722.700 CRV | 2.1834% |
12 | MEXC | CRV-USDT | $1.058 0.0002877 Eth | $15,731,235.00 14,874,288.483 CRV | 2.0828% |
13 | XT.COM | CRV-USDT | $1.032 0.0002843 Eth | $15,454,358.00 14,499,222.800 CRV | 2.0303% |
14 | Niza Global | CRV-USD | $1.029 0.0002822 Eth | $12,589,129.00 11,822,776.294 CRV | 1.6555% |
15 | Kraken | CRV-USD | $1.052 0.0002888 Eth | $12,474,253.00 11,857,655.220 CRV | 1.6604% |
16 | DigiFinex | CRV-USDT | $1.046 0.0002862 Eth | $10,326,180.00 9,873,989.600 CRV | 1.3826% |
17 | LBank | CRV-USDT | $1.041 0.0002843 Eth | $9,726,168.00 9,345,806.010 CRV | 1.3086% |
18 | KuCoin | CRV-USDT | $1.052 0.0002888 Eth | $8,391,874.00 7,979,012.519 CRV | 1.1173% |
19 | FameEX | CRV-USDT | $1.021 0.0002809 Eth | $7,715,432.00 7,240,382.547 CRV | 1.0138% |
20 | BYDFi | CRV-USDT | $1.038 0.0002839 Eth | $7,307,931.00 7,037,528.100 CRV | 0.9854% |
21 | Bitvavo | CRV-EUR | $1.029 0.0002834 Eth | $6,710,977.00 6,523,128.430 CRV | 0.9134% |
22 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.032 0.0002832 Eth | $6,232,490.00 6,112,686.777 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.8559% |
23 | Biconomy.com | CRV-USDT | $1.022 0.0002812 Eth | $5,518,247.00 5,157,006.400 CRV | 0.7221% |
24 | Trubit | CRV-USDT | $1.02 0.0002806 Eth | $5,403,052.00 5,012,573.600 CRV | 0.7019% |
25 | Dex-Trade | CRV-USDT | $1.053 0.0002892 Eth | $5,132,203.00 4,872,749.415 CRV | 0.6823% |
26 | BTSE | CRV-USDT | $1.05 0.0002875 Eth | $4,892,275.00 4,659,318.147 CRV | 0.6524% |
27 | Coinstore | CRV-USDT | $1.028 0.0002823 Eth | $4,845,628.00 4,524,552.700 CRV | 0.6335% |
28 | Bithumb | CRV-KRW | $1.044 0.0002858 Eth | $3,988,750.00 3,820,704.479 CRV | 0.5350% |
29 | Bitrue | CRV-USDT | $1.022 0.0002811 Eth | $3,964,101.00 3,878,569.190 CRV | 0.5431% |
30 | BingX | CRV-USDT | $1.05 0.0002884 Eth | $3,555,007.00 3,330,776.616 CRV | 0.4664% |
31 | Phemex | CRV-USDT | $1.049 0.0002887 Eth | $3,547,110.00 3,382,889.630 CRV | 0.4737% |
32 | Binance | CRV-BTC | $1.043 0.0002854 Eth | $3,498,768.00 3,370,704.800 CRV | 0.4720% |
33 | Luno | CRV-MYR | $1.039 0.0002843 Eth | $3,378,177.00 3,250,761.420 CRV | 0.4552% |
34 | Bullish | CRV-USDC | $1.055 0.0002888 Eth | $3,342,548.00 3,122,372.987 CRV | 0.4372% |
35 | Ourbit | CRV-USDT | $1.049 0.0002880 Eth | $3,303,080.00 3,099,025.670 CRV | 0.4339% |
36 | PointPay | CRV-USDT | $1.045 0.0002877 Eth | $3,157,186.00 2,965,227.939 CRV | 0.4152% |
37 | WhiteBIT | CRV-BTC | $1.04 0.0002843 Eth | $3,156,684.00 3,035,207.600 CRV | 0.4250% |
38 | Bitkub | CRV-THB | $1.021 0.0002813 Eth | $3,116,581.00 3,052,663.887 CRV | 0.4274% |
39 | Binance | CRV-USDC | $1.047 0.0002853 Eth | $2,810,528.00 2,671,001.700 CRV | 0.3740% |
40 | Hotcoin | CRV-USDT | $1.03 0.0002835 Eth | $2,344,110.00 2,276,343.300 CRV | 0.3187% |
41 | Binance | CRV-TRY | $1.045 0.0002877 Eth | $2,154,981.00 2,001,787.200 CRV | 0.2803% |
42 | Kraken | CRV-EUR | $1.049 0.0002880 Eth | $2,006,150.00 1,912,500.732 CRV | 0.2678% |
43 | Currency.com | CRV-USD | $1.032 0.0002844 Eth | $1,915,062.00 1,854,961.408 CRV | 0.2597% |
44 | BitMart | CRV-USDT | $1.04 0.0002858 Eth | $1,805,047.00 1,734,912.620 CRV | 0.2429% |
45 | Icrypex | CRV-USDT | $1.05 0.0002862 Eth | $1,635,779.00 1,557,788.957 CRV | 0.2181% |
46 | WEEX | CRV-USDT | $1.055 0.0002889 Eth | $1,507,275.00 1,428,540.259 CRV | 0.2000% |
47 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.095 0.0002994 Eth | $1,135,386.00 1,118,955.429 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1567% |
48 | Coinbase Exchange | CRV-EUR | $1.024 0.0002814 Eth | $1,109,202.00 1,083,086.630 CRV | 0.1517% |
49 | WhiteBIT | CRV-TRY | $1.057 0.0002879 Eth | $1,012,412.00 957,437.600 CRV | 0.1341% |
50 | P2B | CRV-USD | $1.025 0.0002819 Eth | $921,365.00 898,892.940 CRV | 0.1259% |
51 | OKX | CRV-USDC | $1.051 0.0002875 Eth | $891,607.00 845,289.922 CRV | 0.1184% |
52 | BitDelta | CRV-USDT | $1.068 0.0002895 Eth | $828,296.00 770,639.000 CRV | 0.1079% |
53 | LATOKEN | CRV-BTC | $1.029 0.0002835 Eth | $697,815.00 678,253.366 CRV | 0.0950% |
54 | Pionex | CRV-USDT | $1.047 0.0002876 Eth | $636,649.00 600,813.681 CRV | 0.0841% |
55 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.062 0.0002901 Eth | $597,459.00 610,277.747 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0855% |
56 | Upbit | CRV-BTC | $1.051 0.0002875 Eth | $596,207.00 567,440.387 CRV | 0.0795% |
57 | Coinbase Exchange | CRV-GBP | $1.041 0.0002859 Eth | $543,896.00 522,725.180 CRV | 0.0732% |
58 | Gemini | CRV-USD | $1.041 0.0002850 Eth | $536,627.00 515,541.170 CRV | 0.0722% |
59 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.095 0.0003016 Eth | $466,240.00 77,754.512 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0109% |
60 | Bitso | CRV-USD | $1.072 0.0002903 Eth | $399,070.00 372,103.678 CRV | 0.0521% |
61 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.03 0.0002837 Eth | $384,079.00 365,457.606 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0512% |
62 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.051 0.0002881 Eth | $380,527.00 382,744.976 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0536% |
63 | WEEX | CRV-USDC | $1.067 0.0002887 Eth | $373,411.00 344,289.000 CRV | 0.0482% |
64 | Bitazza | CRV-USDT | $1.062 0.0002905 Eth | $369,580.00 341,211.400 CRV | 0.0478% |
65 | Coinbase Exchange | CRV-BTC | $1.026 0.0002818 Eth | $345,923.00 337,184.910 CRV | 0.0472% |
66 | Tokenize | CRV-SGD | $1.047 0.0002876 Eth | $335,435.00 320,266.127 CRV | 0.0448% |
67 | Tokenize | CRV-USD | $1.048 0.0002876 Eth | $328,609.00 313,707.931 CRV | 0.0439% |
68 | BigONE | CRV-USDT | $1.051 0.0002885 Eth | $313,957.00 298,795.262 CRV | 0.0418% |
69 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.028 0.0002824 Eth | $308,408.00 328,422.242 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0460% |
70 | KickEX | CRV-USDT | $1.053 0.0002883 Eth | $234,389.00 222,610.857 CRV | 0.0312% |
71 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.044 0.0002868 Eth | $226,554.00 234,631.211 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0329% |
72 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.027 0.0002811 Eth | $193,547.00 182,935.009 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0256% |
73 | LATOKEN | CRV-USDT | $1.033 0.0002826 Eth | $181,836.00 176,082.922 CRV | 0.0247% |
74 | ProBit Global | CRV-USDT | $1.033 0.0002847 Eth | $179,065.00 173,272.038 CRV | 0.0243% |
75 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.049 0.0002889 Eth | $160,958.00 69,914.028 0X4200000000000000000000000000000000000042 | 0.0098% |
76 | Bitfinex | CRV-USD | $1.046 0.0002861 Eth | $158,267.00 151,350.290 CRV | 0.0212% |
77 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.037 0.0002849 Eth | $91,254.00 87,738.092 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0123% |
78 | Bitget | CRV-BTC | $1.045 0.0002869 Eth | $73,110.00 70,298.108 CRV | 0.0098% |
79 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.095 0.0003018 Eth | $66,388.00 62,538.861 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0088% |
80 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.034 0.0002835 Eth | $51,345.00 50,664.881 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0071% |
81 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.036 0.0002849 Eth | $46,702.00 46,157.467 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0065% |
82 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.029 0.0002834 Eth | $41,617.00 42,011.617 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0059% |
83 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.059 0.0002893 Eth | $36,762.00 34,615.085 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0048% |
84 | Nonkyc.io | CRV-BTC | $1.019 0.0002805 Eth | $30,256.00 28,845.905 CRV | 0.0040% |
85 | Bitlo | CRV-TRY | $1.033 0.0002844 Eth | $25,996.00 23,940.295 CRV | 0.0034% |
86 | Gate.io | CRV-ETH | $1.04 0.0002856 Eth | $7,073.25 6,919.140 CRV | 0.0010% |
87 | Luno | CRV-XBT | $1.025 0.0002820 Eth | $6,988.92 6,815.800 CRV | 0.0010% |
88 | NovaDAX | CRV-BRL | $1.088 0.0002980 Eth | $6,488.40 5,961.392 CRV | 0.0008% |
89 | DeFi Swap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.11 0.0003033 Eth | $6,176.78 5,886.953 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0008% |
90 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.028 0.0002818 Eth | $5,862.68 6,164.925 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0009% |
91 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.039 0.0002843 Eth | $4,820.26 4,588.281 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0006% |
92 | Balancer V2 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $1.057 0.0002908 Eth | $3,446.87 3,312.064 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0005% |
93 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.037 0.0002843 Eth | $2,946.19 2,857.925 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0004% |
94 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.039 0.0002861 Eth | $2,330.87 2,213.195 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0003% |
95 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $1.096 0.0002995 Eth | $1,205.64 1,079.534 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0002% |
96 | Uniswap V3 (Polygon) | 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A-0X172370D5CD63279EFA6D502DAB29171933A610AF | $1.066 0.0002909 Eth | $1,148.49 511.550 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A | 0.0001% |
97 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.061 0.0002890 Eth | $511.28 491.146 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
98 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.077 0.0002934 Eth | $335.17 310.228 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0000% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.058 0.0002881 Eth | $114.21 110.865 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.05 0.0002861 Eth | $92.19 94.643 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
Contract Source Code Verified (Exact Match)
Contract Name:
Vyper_contract
Compiler Version
vyper:0.2.4
Contract Source Code (Vyper language format)
# @version 0.2.4 """ @title Curve DAO Token @author Curve Finance @license MIT @notice ERC20 with piecewise-linear mining supply. @dev Based on the ERC-20 token standard as defined at https://eips.ethereum.org/EIPS/eip-20 """ from vyper.interfaces import ERC20 implements: ERC20 event Transfer: _from: indexed(address) _to: indexed(address) _value: uint256 event Approval: _owner: indexed(address) _spender: indexed(address) _value: uint256 event UpdateMiningParameters: time: uint256 rate: uint256 supply: uint256 event SetMinter: minter: address event SetAdmin: admin: address name: public(String[64]) symbol: public(String[32]) decimals: public(uint256) balanceOf: public(HashMap[address, uint256]) allowances: HashMap[address, HashMap[address, uint256]] total_supply: uint256 minter: public(address) admin: public(address) # General constants YEAR: constant(uint256) = 86400 * 365 # Allocation: # ========= # * shareholders - 30% # * emplyees - 3% # * DAO-controlled reserve - 5% # * Early users - 5% # == 43% == # left for inflation: 57% # Supply parameters INITIAL_SUPPLY: constant(uint256) = 1_303_030_303 INITIAL_RATE: constant(uint256) = 274_815_283 * 10 ** 18 / YEAR # leading to 43% premine RATE_REDUCTION_TIME: constant(uint256) = YEAR RATE_REDUCTION_COEFFICIENT: constant(uint256) = 1189207115002721024 # 2 ** (1/4) * 1e18 RATE_DENOMINATOR: constant(uint256) = 10 ** 18 INFLATION_DELAY: constant(uint256) = 86400 # Supply variables mining_epoch: public(int128) start_epoch_time: public(uint256) rate: public(uint256) start_epoch_supply: uint256 @external def __init__(_name: String[64], _symbol: String[32], _decimals: uint256): """ @notice Contract constructor @param _name Token full name @param _symbol Token symbol @param _decimals Number of decimals for token """ init_supply: uint256 = INITIAL_SUPPLY * 10 ** _decimals self.name = _name self.symbol = _symbol self.decimals = _decimals self.balanceOf[msg.sender] = init_supply self.total_supply = init_supply self.admin = msg.sender log Transfer(ZERO_ADDRESS, msg.sender, init_supply) self.start_epoch_time = block.timestamp + INFLATION_DELAY - RATE_REDUCTION_TIME self.mining_epoch = -1 self.rate = 0 self.start_epoch_supply = init_supply @internal def _update_mining_parameters(): """ @dev Update mining rate and supply at the start of the epoch Any modifying mining call must also call this """ _rate: uint256 = self.rate _start_epoch_supply: uint256 = self.start_epoch_supply self.start_epoch_time += RATE_REDUCTION_TIME self.mining_epoch += 1 if _rate == 0: _rate = INITIAL_RATE else: _start_epoch_supply += _rate * RATE_REDUCTION_TIME self.start_epoch_supply = _start_epoch_supply _rate = _rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT self.rate = _rate log UpdateMiningParameters(block.timestamp, _rate, _start_epoch_supply) @external def update_mining_parameters(): """ @notice Update mining rate and supply at the start of the epoch @dev Callable by any address, but only once per epoch Total supply becomes slightly larger if this function is called late """ assert block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME # dev: too soon! self._update_mining_parameters() @external def start_epoch_time_write() -> uint256: """ @notice Get timestamp of the current mining epoch start while simultaneously updating mining parameters @return Timestamp of the epoch """ _start_epoch_time: uint256 = self.start_epoch_time if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() return self.start_epoch_time else: return _start_epoch_time @external def future_epoch_time_write() -> uint256: """ @notice Get timestamp of the next mining epoch start while simultaneously updating mining parameters @return Timestamp of the next epoch """ _start_epoch_time: uint256 = self.start_epoch_time if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() return self.start_epoch_time + RATE_REDUCTION_TIME else: return _start_epoch_time + RATE_REDUCTION_TIME @internal @view def _available_supply() -> uint256: return self.start_epoch_supply + (block.timestamp - self.start_epoch_time) * self.rate @external @view def available_supply() -> uint256: """ @notice Current number of tokens in existence (claimed or unclaimed) """ return self._available_supply() @external @view def mintable_in_timeframe(start: uint256, end: uint256) -> uint256: """ @notice How much supply is mintable from start timestamp till end timestamp @param start Start of the time interval (timestamp) @param end End of the time interval (timestamp) @return Tokens mintable from `start` till `end` """ assert start <= end # dev: start > end to_mint: uint256 = 0 current_epoch_time: uint256 = self.start_epoch_time current_rate: uint256 = self.rate # Special case if end is in future (not yet minted) epoch if end > current_epoch_time + RATE_REDUCTION_TIME: current_epoch_time += RATE_REDUCTION_TIME current_rate = current_rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT assert end <= current_epoch_time + RATE_REDUCTION_TIME # dev: too far in future for i in range(999): # Curve will not work in 1000 years. Darn! if end >= current_epoch_time: current_end: uint256 = end if current_end > current_epoch_time + RATE_REDUCTION_TIME: current_end = current_epoch_time + RATE_REDUCTION_TIME current_start: uint256 = start if current_start >= current_epoch_time + RATE_REDUCTION_TIME: break # We should never get here but what if... elif current_start < current_epoch_time: current_start = current_epoch_time to_mint += current_rate * (current_end - current_start) if start >= current_epoch_time: break current_epoch_time -= RATE_REDUCTION_TIME current_rate = current_rate * RATE_REDUCTION_COEFFICIENT / RATE_DENOMINATOR # double-division with rounding made rate a bit less => good assert current_rate <= INITIAL_RATE # This should never happen return to_mint @external def set_minter(_minter: address): """ @notice Set the minter address @dev Only callable once, when minter has not yet been set @param _minter Address of the minter """ assert msg.sender == self.admin # dev: admin only assert self.minter == ZERO_ADDRESS # dev: can set the minter only once, at creation self.minter = _minter log SetMinter(_minter) @external def set_admin(_admin: address): """ @notice Set the new admin. @dev After all is set up, admin only can change the token name @param _admin New admin address """ assert msg.sender == self.admin # dev: admin only self.admin = _admin log SetAdmin(_admin) @external @view def totalSupply() -> uint256: """ @notice Total number of tokens in existence. """ return self.total_supply @external @view def allowance(_owner : address, _spender : address) -> uint256: """ @notice Check the amount of tokens that an owner allowed to a spender @param _owner The address which owns the funds @param _spender The address which will spend the funds @return uint256 specifying the amount of tokens still available for the spender """ return self.allowances[_owner][_spender] @external def transfer(_to : address, _value : uint256) -> bool: """ @notice Transfer `_value` tokens from `msg.sender` to `_to` @dev Vyper does not allow underflows, so the subtraction in this function will revert on an insufficient balance @param _to The address to transfer to @param _value The amount to be transferred @return bool success """ assert _to != ZERO_ADDRESS # dev: transfers to 0x0 are not allowed self.balanceOf[msg.sender] -= _value self.balanceOf[_to] += _value log Transfer(msg.sender, _to, _value) return True @external def transferFrom(_from : address, _to : address, _value : uint256) -> bool: """ @notice Transfer `_value` tokens from `_from` to `_to` @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 @return bool success """ assert _to != ZERO_ADDRESS # dev: transfers to 0x0 are not allowed # NOTE: vyper does not allow underflows # so the following subtraction would revert on insufficient balance self.balanceOf[_from] -= _value self.balanceOf[_to] += _value self.allowances[_from][msg.sender] -= _value log Transfer(_from, _to, _value) return True @external def approve(_spender : address, _value : uint256) -> bool: """ @notice Approve `_spender` to transfer `_value` tokens on behalf of `msg.sender` @dev Approval may only be from zero -> nonzero or from nonzero -> zero in order to mitigate the potential race condition described here: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 @param _spender The address which will spend the funds @param _value The amount of tokens to be spent @return bool success """ assert _value == 0 or self.allowances[msg.sender][_spender] == 0 self.allowances[msg.sender][_spender] = _value log Approval(msg.sender, _spender, _value) return True @external def mint(_to: address, _value: uint256) -> bool: """ @notice Mint `_value` tokens and assign them to `_to` @dev Emits a Transfer event originating from 0x00 @param _to The account that will receive the created tokens @param _value The amount that will be created @return bool success """ assert msg.sender == self.minter # dev: minter only assert _to != ZERO_ADDRESS # dev: zero address if block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() _total_supply: uint256 = self.total_supply + _value assert _total_supply <= self._available_supply() # dev: exceeds allowable mint amount self.total_supply = _total_supply self.balanceOf[_to] += _value log Transfer(ZERO_ADDRESS, _to, _value) return True @external def burn(_value: uint256) -> bool: """ @notice Burn `_value` tokens belonging to `msg.sender` @dev Emits a Transfer event with a destination of 0x00 @param _value The amount that will be burned @return bool success """ self.balanceOf[msg.sender] -= _value self.total_supply -= _value log Transfer(msg.sender, ZERO_ADDRESS, _value) return True @external def set_name(_name: String[64], _symbol: String[32]): """ @notice Change the token name and symbol to `_name` and `_symbol` @dev Only callable by the admin account @param _name New token name @param _symbol New token symbol """ assert msg.sender == self.admin, "Only admin is allowed to change name" self.name = _name self.symbol = _symbol
Contract Security Audit
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Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000000f43757276652044414f20546f6b656e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034352560000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _name (string): Curve DAO Token
Arg [1] : _symbol (string): CRV
Arg [2] : _decimals (uint256): 18
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [4] : 43757276652044414f20546f6b656e0000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 4352560000000000000000000000000000000000000000000000000000000000
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