Overview
Max Total Supply
2,163,563,050.275228877225398846 CRV
Holders
87,830 ( -0.007%)
Market
Price
$0.29 @ 0.000115 ETH (-2.14%)
Onchain Market Cap
$625,399,845.55
Circulating Supply Market Cap
$337,332,541.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
937,480,518.968544655576649626 CRVValue
$270,988,253.24 ( ~107,522.2337 Eth) [43.3304%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $0.2894 0.0001148 Eth | $24,453,657.00 83,167,298.600 CRV | 28.4354% |
2 | BloFin | CRV-USDT | $0.2895 0.0001150 Eth | $9,564,492.00 32,517,281.500 CRV | 11.1179% |
3 | HTX | CRV-USDT | $0.2894 0.0001148 Eth | $4,939,020.00 16,843,603.400 CRV | 5.7589% |
4 | Bybit | CRV-USDT | $0.2895 0.0001148 Eth | $4,631,170.00 15,738,197.100 CRV | 5.3810% |
5 | OKX | CRV-USDT | $0.2896 0.0001149 Eth | $3,658,557.00 12,443,671.579 CRV | 4.2546% |
6 | Websea | CRV-USDT | $0.2896 0.0001149 Eth | $3,601,804.00 0.000 CRV | 0.0000% |
7 | Gate.io | CRV-USDT | $0.2895 0.0001148 Eth | $3,511,177.00 12,019,746.730 CRV | 4.1096% |
8 | WhiteBIT | CRV-USDT | $0.2894 0.0001149 Eth | $3,082,243.00 10,650,867.557 CRV | 3.6416% |
9 | Bitunix | CRV-USDT | $0.2892 0.0001148 Eth | $3,080,690.00 10,652,713.500 CRV | 3.6422% |
10 | LBank | CRV-USDT | $0.2898 0.0001150 Eth | $2,728,973.00 9,416,120.390 CRV | 3.2194% |
11 | Coinbase Exchange | CRV-USD | $0.2897 0.0001150 Eth | $2,191,377.00 7,564,297.990 CRV | 2.5863% |
12 | XT.COM | CRV-USDT | $0.2896 0.0001149 Eth | $1,957,767.00 6,656,114.800 CRV | 2.2758% |
13 | Phemex | CRV-USDT | $0.2894 0.0001150 Eth | $1,794,616.00 6,201,400.650 CRV | 2.1203% |
14 | Trubit | CRV-USDT | $0.2894 0.0001150 Eth | $1,790,553.00 6,073,704.600 CRV | 2.0766% |
15 | Slex | CRV-USDT | $0.2896 0.0001149 Eth | $1,601,820.00 5,446,254.000 CRV | 1.8621% |
16 | Hotcoin | CRV-USDT | $0.2892 0.0001149 Eth | $1,456,573.00 5,036,024.500 CRV | 1.7219% |
17 | DigiFinex | CRV-USDT | $0.2894 0.0001148 Eth | $1,227,895.00 4,242,402.000 CRV | 1.4505% |
18 | KuCoin | CRV-USDT | $0.2893 0.0001148 Eth | $1,120,109.00 3,871,532.073 CRV | 1.3237% |
19 | FameEX | CRV-USDT | $0.289 0.0001147 Eth | $971,997.00 3,306,202.632 CRV | 1.1304% |
20 | Kraken | CRV-USD | $0.289 0.0001147 Eth | $878,587.00 3,040,093.956 CRV | 1.0394% |
21 | Dex-Trade | CRV-USDT | $0.289 0.0001146 Eth | $866,899.00 2,999,813.300 CRV | 1.0257% |
22 | BYDFi | CRV-USDT | $0.2889 0.0001147 Eth | $829,967.00 2,873,110.800 CRV | 0.9823% |
23 | CoinCatch | CRV-USDT | $0.2898 0.0001150 Eth | $675,361.00 2,293,781.101 CRV | 0.7843% |
24 | CoinW | CRV-USDT | $0.2891 0.0001148 Eth | $626,704.00 2,167,958.961 CRV | 0.7412% |
25 | PointPay | CRV-USDT | $0.2911 0.0001153 Eth | $416,460.00 1,414,275.906 CRV | 0.4836% |
26 | FMFW.io | CRV-USDT | $0.2887 0.0001146 Eth | $390,050.00 1,351,163.200 CRV | 0.4620% |
27 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2918 0.0001158 Eth | $363,445.00 1,253,310.547 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4285% |
28 | Biconomy.com | CRV-USDT | $0.2892 0.0001149 Eth | $363,439.00 1,250,272.900 CRV | 0.4275% |
29 | AscendEX (BitMax) | CRV-USDT | $0.2884 0.0001144 Eth | $353,281.00 1,224,886.400 CRV | 0.4188% |
30 | BingX | CRV-USDT | $0.289 0.0001147 Eth | $351,781.00 1,198,424.092 CRV | 0.4097% |
31 | Binance | CRV-USDC | $0.2892 0.0001148 Eth | $343,188.00 1,172,549.600 CRV | 0.4009% |
32 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2888 0.0001146 Eth | $315,321.00 1,085,393.029 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.3711% |
33 | Coinstore | CRV-USDT | $0.2899 0.0001152 Eth | $307,681.00 1,052,678.100 CRV | 0.3599% |
34 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2886 0.0001145 Eth | $295,878.00 1,017,816.765 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3480% |
35 | Bitazza | CRV-USDT | $0.2899 0.0001152 Eth | $264,408.00 897,035.200 CRV | 0.3067% |
36 | BitMart | CRV-USDT | $0.2896 0.0001149 Eth | $263,389.00 909,426.800 CRV | 0.3109% |
37 | Toobit | CRV-USDT | $0.2891 0.0001148 Eth | $241,638.00 821,274.700 CRV | 0.2808% |
38 | Bitget | CRV-USDT | $0.2889 0.0001146 Eth | $238,743.00 812,666.226 CRV | 0.2779% |
39 | Binance | CRV-BTC | $0.2882 0.0001143 Eth | $234,813.00 811,614.400 CRV | 0.2775% |
40 | Tapbit | CRV-USDT | $0.2893 0.0001149 Eth | $223,259.00 759,466.500 CRV | 0.2597% |
41 | CoinEx | CRV-USDT | $0.2894 0.0001149 Eth | $222,090.00 764,344.457 CRV | 0.2613% |
42 | Bitkub | CRV-THB | $0.2891 0.0001148 Eth | $203,709.00 704,599.489 CRV | 0.2409% |
43 | P2B | CRV-USDT | $0.289 0.0001147 Eth | $198,954.00 688,376.900 CRV | 0.2354% |
44 | P2B | CRV-USD | $0.289 0.0001147 Eth | $188,695.00 652,922.860 CRV | 0.2232% |
45 | MEXC | CRV-USDT | $0.2894 0.0001149 Eth | $167,314.00 578,072.959 CRV | 0.1976% |
46 | LocalTrade | CRV-USDT | $0.2897 0.0001149 Eth | $166,091.00 573,281.801 CRV | 0.1960% |
47 | Nominex | CRV-USDT | $0.2893 0.0001148 Eth | $134,744.00 465,799.560 CRV | 0.1593% |
48 | Bitget | CRV-USDC | $0.2899 0.0001150 Eth | $133,211.00 453,250.650 CRV | 0.1550% |
49 | BitDelta | CRV-USDT | $0.2896 0.0001149 Eth | $132,502.00 450,413.300 CRV | 0.1540% |
50 | Bitvavo | CRV-EUR | $0.2889 0.0001148 Eth | $123,647.00 428,005.428 CRV | 0.1463% |
51 | Fairdesk | CRV-USDT | $0.2893 0.0001149 Eth | $114,130.00 394,461.000 CRV | 0.1349% |
52 | BTSE | CRV-USDT | $0.2893 0.0001148 Eth | $113,364.00 391,811.161 CRV | 0.1340% |
53 | WhiteBIT | CRV-BTC | $0.2897 0.0001151 Eth | $98,345.00 339,460.300 CRV | 0.1161% |
54 | WhiteBIT | CRV-TRY | $0.2907 0.0001155 Eth | $95,391.00 328,140.900 CRV | 0.1122% |
55 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2892 0.0001148 Eth | $83,248.00 287,285.402 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0982% |
56 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2896 0.0001150 Eth | $73,884.00 255,057.240 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0872% |
57 | Icrypex | CRV-TRY | $0.2908 0.0001155 Eth | $57,073.00 196,239.518 CRV | 0.0671% |
58 | WEEX | CRV-USDT | $0.2893 0.0001148 Eth | $54,970.00 186,779.000 CRV | 0.0639% |
59 | Gemini | CRV-USD | $0.2893 0.0001148 Eth | $51,810.00 179,085.736 CRV | 0.0612% |
60 | BigONE | CRV-USDT | $0.289 0.0001148 Eth | $51,744.00 179,025.010 CRV | 0.0612% |
61 | Deepcoin | CRV-USDT | $0.2889 0.0001146 Eth | $45,602.00 161,910.400 CRV | 0.0554% |
62 | Coinbase Exchange | CRV-BTC | $0.2893 0.0001149 Eth | $43,609.00 150,733.510 CRV | 0.0515% |
63 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.29 0.0001152 Eth | $40,198.00 138,452.924 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0473% |
64 | Bitget | CRV-BTC | $0.2888 0.0001146 Eth | $36,347.00 124,834.377 CRV | 0.0427% |
65 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $0.2885 0.0001146 Eth | $34,953.00 120,648.887 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0413% |
66 | LATOKEN | CRV-USDT | $0.2896 0.0001149 Eth | $28,852.00 99,619.625 CRV | 0.0341% |
67 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2886 0.0001146 Eth | $27,266.00 93,603.818 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0320% |
68 | Coinbase Exchange | CRV-EUR | $0.2881 0.0001144 Eth | $25,402.00 88,157.940 CRV | 0.0301% |
69 | Dex-Trade | CRV-BTC | $0.29 0.0001151 Eth | $24,395.00 84,108.000 CRV | 0.0288% |
70 | XT.COM | CRV-BTC | $0.2889 0.0001146 Eth | $23,630.00 82,493.000 CRV | 0.0282% |
71 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599 | $0.2917 0.0001157 Eth | $19,811.72 68,179.190 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0233% |
72 | OKX | CRV-USDC | $0.2893 0.0001148 Eth | $18,688.69 63,680.652 CRV | 0.0218% |
73 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2889 0.0001146 Eth | $16,338.25 7,772.811 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0027% |
74 | LATOKEN | CRV-BTC | $0.2895 0.0001148 Eth | $15,520.34 53,617.938 CRV | 0.0183% |
75 | Kraken | CRV-EUR | $0.289 0.0001147 Eth | $13,958.10 48,293.739 CRV | 0.0165% |
76 | Azbit | CRV-USDT | $0.2892 0.0001149 Eth | $13,830.67 46,986.482 CRV | 0.0161% |
77 | TokoCrypto | CRV-USDT | $0.2893 0.0001149 Eth | $9,467.20 32,725.668 CRV | 0.0112% |
78 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2894 0.0001148 Eth | $9,245.88 31,120.380 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0106% |
79 | MEXC | CRV-ETH | $0.289 0.0001147 Eth | $7,853.03 27,175.274 CRV | 0.0093% |
80 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $0.2892 0.0001148 Eth | $7,424.72 25,668.867 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0088% |
81 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2911 0.0001160 Eth | $6,765.52 23,372.389 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0080% |
82 | Bitazza | CRV-THB | $0.2878 0.0001143 Eth | $5,702.15 19,268.900 CRV | 0.0066% |
83 | Nonkyc.io | CRV-USDT | $0.2893 0.0001149 Eth | $5,461.64 18,575.481 CRV | 0.0064% |
84 | HashKey Global | CRV-USDT | $0.2896 0.0001150 Eth | $4,549.88 15,552.500 CRV | 0.0053% |
85 | Bitso | CRV-USD | $0.2905 0.0001154 Eth | $4,112.97 14,156.795 CRV | 0.0048% |
86 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2888 0.0001147 Eth | $3,946.89 13,499.192 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0046% |
87 | P2B | CRV-BTC | $0.2889 0.0001146 Eth | $3,909.87 13,535.000 CRV | 0.0046% |
88 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | $0.289 0.0001147 Eth | $3,587.42 12,666.991 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0043% |
89 | CEX.IO | CRV-USD | $0.29 0.0001151 Eth | $3,328.57 11,330.147 CRV | 0.0039% |
90 | Azbit | CRV-BTC | $0.2893 0.0001149 Eth | $2,723.06 9,341.318 CRV | 0.0032% |
91 | Gate.io | CRV-ETH | $0.2898 0.0001149 Eth | $1,940.44 6,681.440 CRV | 0.0023% |
92 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2876 0.0001144 Eth | $1,648.36 5,715.186 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0020% |
93 | Nonkyc.io | CRV-BTC | $0.2899 0.0001152 Eth | $1,393.20 4,809.934 CRV | 0.0016% |
94 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $0.2905 0.0001153 Eth | $887.88 2,992.521 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0010% |
95 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2887 0.0001146 Eth | $659.16 2,316.078 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0008% |
96 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2886 0.0001148 Eth | $491.25 1,700.422 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0006% |
97 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2894 0.0001152 Eth | $236.72 820.376 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0003% |
98 | Balancer V2 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.2908 0.0001154 Eth | $107.44 370.558 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
99 | CEX.IO | CRV-USDT | $0.2899 0.0001152 Eth | $29.86 99.107 CRV | 0.0000% |
100 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $0.2901 0.0001151 Eth | $22.42 77.174 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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