Overview
Max Total Supply
2,202,110,739.494935704511966687 CRV
Holders
88,647 (0.00%)
Market
Price
$1.06 @ 0.000293 ETH (-5.50%)
Onchain Market Cap
$2,326,714,223.34
Circulating Supply Market Cap
$1,321,420,629.51
Other Info
Token Contract (WITH 18 Decimals)
Balance
102,723.049025151217663953 CRVValue
$108,535.50 ( ~30.1343 Eth) [0.0047%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.047 0.0002904 Eth | $242,819,452.00 219,547,473.500 CRV | 24.5796% |
2 | WhiteBIT | CRV-USDT | $1.046 0.0002914 Eth | $108,041,884.00 103,291,624.310 CRV | 11.5641% |
3 | Gate.io | CRV-USDT | $1.051 0.0002918 Eth | $73,837,836.00 66,837,777.800 CRV | 7.4829% |
4 | OKX | CRV-USDT | $1.046 0.0002902 Eth | $68,793,579.00 62,380,700.860 CRV | 6.9839% |
5 | Coinbase Exchange | CRV-USD | $1.043 0.0002894 Eth | $41,098,276.00 39,396,353.300 CRV | 4.4106% |
6 | HTX | CRV-USDT | $1.043 0.0002894 Eth | $36,092,505.00 32,704,107.918 CRV | 3.6614% |
7 | Bitunix | CRV-USDT | $1.049 0.0002913 Eth | $32,469,727.00 30,943,139.000 CRV | 3.4643% |
8 | Bitget | CRV-USDT | $1.045 0.0002899 Eth | $32,431,937.00 29,118,431.385 CRV | 3.2600% |
9 | Bybit | CRV-USDT | $1.044 0.0002895 Eth | $31,834,042.00 29,029,147.900 CRV | 3.2500% |
10 | MEXC | CRV-USDT | $1.046 0.0002906 Eth | $30,430,545.00 29,099,876.437 CRV | 3.2579% |
11 | XT.COM | CRV-USDT | $1.059 0.0002927 Eth | $19,577,785.00 17,718,634.300 CRV | 1.9837% |
12 | Slex | CRV-USDT | $1.045 0.0002905 Eth | $15,589,373.00 13,928,201.100 CRV | 1.5593% |
13 | Niza Global | CRV-USD | $1.046 0.0002914 Eth | $14,895,195.00 13,756,945.151 CRV | 1.5402% |
14 | Kraken | CRV-USD | $1.047 0.0002905 Eth | $14,421,911.00 13,774,509.307 CRV | 1.5421% |
15 | DigiFinex | CRV-USDT | $1.045 0.0002900 Eth | $12,496,498.00 11,957,964.400 CRV | 1.3388% |
16 | LBank | CRV-USDT | $1.053 0.0002919 Eth | $10,121,704.00 9,611,291.240 CRV | 1.0760% |
17 | FameEX | CRV-USDT | $1.054 0.0002921 Eth | $9,734,214.00 8,804,780.996 CRV | 0.9857% |
18 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.05 0.0002917 Eth | $9,252,885.00 8,542,230.973 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.9564% |
19 | BYDFi | CRV-USDT | $1.061 0.0002930 Eth | $9,140,519.00 8,614,010.800 CRV | 0.9644% |
20 | CoinW | CRV-USDT | $1.051 0.0002919 Eth | $8,618,503.00 8,200,309.328 CRV | 0.9181% |
21 | KuCoin | CRV-USDT | $1.051 0.0002916 Eth | $8,471,232.00 8,062,050.036 CRV | 0.9026% |
22 | WhiteBIT | CRV-BTC | $1.048 0.0002909 Eth | $6,991,304.00 6,669,156.200 CRV | 0.7466% |
23 | Biconomy.com | CRV-USDT | $1.045 0.0002910 Eth | $6,907,552.00 6,251,343.300 CRV | 0.6999% |
24 | Dex-Trade | CRV-USDT | $1.051 0.0002921 Eth | $6,606,858.00 6,285,992.669 CRV | 0.7038% |
25 | Coinstore | CRV-USDT | $1.049 0.0002913 Eth | $6,056,082.00 5,475,019.900 CRV | 0.6130% |
26 | Currency.com | CRV-USD | $1.064 0.0002942 Eth | $5,691,830.00 5,348,459.021 CRV | 0.5988% |
27 | Bitrue | CRV-USDT | $1.05 0.0002917 Eth | $5,248,266.00 4,999,541.770 CRV | 0.5597% |
28 | Bitkub | CRV-THB | $1.064 0.0002939 Eth | $5,111,095.00 4,804,158.104 CRV | 0.5379% |
29 | Bithumb | CRV-KRW | $1.045 0.0002899 Eth | $5,002,945.00 4,789,515.483 CRV | 0.5362% |
30 | Toobit | CRV-USDT | $1.049 0.0002914 Eth | $4,870,482.00 4,402,893.400 CRV | 0.4929% |
31 | BTSE | CRV-USDT | $1.051 0.0002916 Eth | $4,782,582.00 4,551,571.281 CRV | 0.5096% |
32 | FMFW.io | CRV-USDT | $1.047 0.0002910 Eth | $4,668,204.00 4,458,262.300 CRV | 0.4991% |
33 | Bitvavo | CRV-EUR | $1.044 0.0002907 Eth | $4,422,425.00 4,237,939.786 CRV | 0.4745% |
34 | Binance | CRV-BTC | $1.044 0.0002897 Eth | $4,381,698.00 3,984,137.900 CRV | 0.4460% |
35 | Binance | CRV-TRY | $1.071 0.0002958 Eth | $4,273,464.00 3,754,506.100 CRV | 0.4203% |
36 | Ourbit | CRV-USDT | $1.05 0.0002916 Eth | $4,217,496.00 3,814,529.870 CRV | 0.4271% |
37 | Hibt | CRV-USDT | $1.044 0.0002910 Eth | $4,130,259.00 3,746,899.980 CRV | 0.4195% |
38 | PointPay | CRV-USDT | $1.064 0.0002939 Eth | $3,994,971.00 3,612,858.773 CRV | 0.4045% |
39 | BingX | CRV-USDT | $1.044 0.0002898 Eth | $3,982,389.00 3,607,788.467 CRV | 0.4039% |
40 | Luno | CRV-MYR | $1.058 0.0002935 Eth | $3,957,994.00 3,741,913.290 CRV | 0.4189% |
41 | Binance | CRV-USDC | $1.061 0.0002937 Eth | $3,574,269.00 3,229,871.000 CRV | 0.3616% |
42 | Phemex | CRV-USDT | $1.049 0.0002923 Eth | $3,445,866.00 3,284,391.240 CRV | 0.3677% |
43 | Trubit | CRV-USDT | $1.059 0.0002927 Eth | $3,382,160.00 3,124,132.000 CRV | 0.3498% |
44 | Icrypex | CRV-USDT | $1.047 0.0002908 Eth | $2,592,632.00 2,475,787.028 CRV | 0.2772% |
45 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.06 0.0002945 Eth | $2,529,398.00 2,326,299.187 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.2604% |
46 | BitMart | CRV-USDT | $1.049 0.0002915 Eth | $2,283,660.00 2,176,885.320 CRV | 0.2437% |
47 | Hotcoin | CRV-USDT | $1.044 0.0002910 Eth | $2,154,109.00 2,062,494.544 CRV | 0.2309% |
48 | CoinEx | CRV-USDT | $1.059 0.0002935 Eth | $2,115,631.00 1,901,458.978 CRV | 0.2129% |
49 | Kraken | CRV-EUR | $1.047 0.0002904 Eth | $1,771,401.00 1,692,365.244 CRV | 0.1895% |
50 | WhiteBIT | CRV-TRY | $1.051 0.0002927 Eth | $1,761,880.00 1,676,986.600 CRV | 0.1877% |
51 | WEEX | CRV-USDT | $1.065 0.0002944 Eth | $1,502,389.00 1,410,961.459 CRV | 0.1580% |
52 | Coinbase Exchange | CRV-EUR | $1.044 0.0002898 Eth | $1,446,239.00 1,385,194.650 CRV | 0.1551% |
53 | P2B | CRV-USD | $1.043 0.0002899 Eth | $1,198,984.00 1,149,553.390 CRV | 0.1287% |
54 | BitDelta | CRV-USDT | $1.048 0.0002908 Eth | $1,023,948.00 928,924.500 CRV | 0.1040% |
55 | Nonkyc.io | CRV-USDT | $1.048 0.0002919 Eth | $957,477.00 870,548.672 CRV | 0.0975% |
56 | LATOKEN | CRV-BTC | $1.045 0.0002904 Eth | $832,388.00 796,434.406 CRV | 0.0892% |
57 | Pionex | CRV-USDT | $1.06 0.0002930 Eth | $752,199.00 679,824.424 CRV | 0.0761% |
58 | OKX | CRV-USDC | $1.045 0.0002900 Eth | $732,097.00 673,604.915 CRV | 0.0754% |
59 | Tapbit | CRV-USDT | $1.059 0.0002933 Eth | $534,060.00 483,717.600 CRV | 0.0542% |
60 | Gemini | CRV-USD | $1.041 0.0002889 Eth | $528,844.00 507,966.802 CRV | 0.0569% |
61 | Upbit | CRV-BTC | $1.053 0.0002921 Eth | $511,466.00 485,802.428 CRV | 0.0544% |
62 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.052 0.0002923 Eth | $501,204.00 84,717.947 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0095% |
63 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.053 0.0002927 Eth | $466,978.00 518,293.948 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0580% |
64 | Coinbase Exchange | CRV-GBP | $1.043 0.0002893 Eth | $445,818.00 427,543.060 CRV | 0.0479% |
65 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.051 0.0002928 Eth | $432,442.00 395,425.323 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0443% |
66 | Bitazza | CRV-USDT | $1.053 0.0002925 Eth | $414,740.00 374,025.700 CRV | 0.0419% |
67 | Coinbase Exchange | CRV-BTC | $1.049 0.0002910 Eth | $411,878.00 392,654.020 CRV | 0.0440% |
68 | WEEX | CRV-USDC | $1.049 0.0002922 Eth | $404,310.00 365,294.000 CRV | 0.0409% |
69 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.078 0.0002993 Eth | $388,481.00 344,530.128 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0386% |
70 | AscendEX (BitMax) | CRV-USDT | $1.044 0.0002896 Eth | $345,564.00 331,073.800 CRV | 0.0371% |
71 | BVOX | CRV-USDT | $1.046 0.0002903 Eth | $344,602.00 310,248.600 CRV | 0.0347% |
72 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.049 0.0002914 Eth | $286,888.00 262,518.398 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0294% |
73 | Bitso | CRV-USD | $1.043 0.0002896 Eth | $283,903.00 272,203.232 CRV | 0.0305% |
74 | BigONE | CRV-USDT | $1.049 0.0002912 Eth | $257,096.00 245,050.755 CRV | 0.0274% |
75 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.048 0.0002920 Eth | $251,660.00 227,923.385 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0255% |
76 | KickEX | CRV-USDT | $1.046 0.0002912 Eth | $235,035.00 224,781.067 CRV | 0.0252% |
77 | LATOKEN | CRV-USDT | $1.048 0.0002909 Eth | $230,795.00 220,300.800 CRV | 0.0247% |
78 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.072 0.0002963 Eth | $221,764.00 103,638.223 0X4200000000000000000000000000000000000042 | 0.0116% |
79 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.045 0.0002902 Eth | $186,725.00 173,911.533 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0195% |
80 | TokoCrypto | CRV-USDT | $1.045 0.0002911 Eth | $183,889.00 175,967.266 CRV | 0.0197% |
81 | Dex-Trade | CRV-BTC | $1.049 0.0002910 Eth | $128,295.00 122,307.000 CRV | 0.0137% |
82 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.073 0.0002983 Eth | $94,951.00 87,168.421 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0098% |
83 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.049 0.0002915 Eth | $76,525.00 66,695.828 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0075% |
84 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.053 0.0002923 Eth | $75,529.00 69,558.837 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0078% |
85 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.08 0.0003002 Eth | $70,284.00 63,760.974 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0071% |
86 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.054 0.0002924 Eth | $56,054.00 52,098.714 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0058% |
87 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.044 0.0002896 Eth | $53,874.00 50,041.210 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0056% |
88 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.051 0.0002927 Eth | $36,101.00 33,213.582 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0037% |
89 | Foxbit | CRV-BRL | $1.063 0.0002943 Eth | $13,889.98 12,652.618 CRV | 0.0014% |
90 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.046 0.0002915 Eth | $11,051.81 10,160.864 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0011% |
91 | Balancer V2 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $1.039 0.0002883 Eth | $3,975.21 3,683.841 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0004% |
92 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.056 0.0002932 Eth | $3,888.10 3,572.287 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0004% |
93 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.054 0.0002938 Eth | $3,738.65 3,461.310 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0004% |
94 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $1.057 0.0002936 Eth | $1,119.95 1,033.626 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
95 | Uniswap V3 (Polygon) | 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A-0X172370D5CD63279EFA6D502DAB29171933A610AF | $1.066 0.0002939 Eth | $985.09 485.186 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A | 0.0001% |
96 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.058 0.0002940 Eth | $719.51 668.948 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
97 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.072 0.0002980 Eth | $441.51 401.121 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0000% |
98 | Nominex | CRV-USDT | $1.06 0.0002926 Eth | $301.23 284.264 CRV | 0.0000% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.054 0.0002927 Eth | $181.71 169.361 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.058 0.0002939 Eth | $160.78 145.979 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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