Overview
Max Total Supply
2,203,096,917.073708687426251283 CRV
Holders
88,839 (0.00%)
Market
Price
$1.13 @ 0.000288 ETH (-6.90%)
Onchain Market Cap
$2,488,360,433.20
Circulating Supply Market Cap
$1,413,875,147.04
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.474785478533642004 CRVValue
$0.54 ( ~0.000137806824288995 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.14 0.0002909 Eth | $127,132,942.00 108,037,424.800 CRV | 24.5679% |
2 | WhiteBIT | CRV-USDT | $1.14 0.0002909 Eth | $66,779,345.00 58,612,036.364 CRV | 13.3285% |
3 | OKX | CRV-USDT | $1.14 0.0002908 Eth | $38,451,455.00 32,577,430.249 CRV | 7.4082% |
4 | Gate.io | CRV-USDT | $1.14 0.0002908 Eth | $29,213,172.00 24,677,428.160 CRV | 5.6117% |
5 | Bitget | CRV-USDT | $1.14 0.0002911 Eth | $23,898,244.00 20,151,744.356 CRV | 4.5825% |
6 | HTX | CRV-USDT | $1.14 0.0002907 Eth | $21,912,958.00 18,726,255.736 CRV | 4.2584% |
7 | Coinbase Exchange | CRV-USD | $1.13 0.0002893 Eth | $17,502,451.00 15,435,620.940 CRV | 3.5101% |
8 | Bybit | CRV-USDT | $1.14 0.0002914 Eth | $16,513,695.00 13,967,064.740 CRV | 3.1761% |
9 | Bitunix | CRV-USDT | $1.14 0.0002914 Eth | $13,527,508.00 11,852,926.700 CRV | 2.6954% |
10 | MEXC | CRV-USDT | $1.13 0.0002891 Eth | $13,015,247.00 11,510,982.075 CRV | 2.6176% |
11 | XT.COM | CRV-USDT | $1.14 0.0002908 Eth | $10,183,154.00 8,653,517.800 CRV | 1.9678% |
12 | Slex | CRV-USDT | $1.13 0.0002886 Eth | $8,261,901.00 7,000,326.800 CRV | 1.5919% |
13 | DigiFinex | CRV-USDT | $1.14 0.0002911 Eth | $6,772,686.00 5,938,329.100 CRV | 1.3504% |
14 | KuCoin | CRV-USDT | $1.14 0.0002907 Eth | $5,803,168.00 5,095,703.213 CRV | 1.1588% |
15 | Kraken | CRV-USD | $1.14 0.0002910 Eth | $5,586,569.00 4,900,499.195 CRV | 1.1144% |
16 | CoinW | CRV-USDT | $1.14 0.0002897 Eth | $5,563,661.00 4,895,686.236 CRV | 1.1133% |
17 | LBank | CRV-USDT | $1.13 0.0002891 Eth | $5,216,162.00 4,613,314.160 CRV | 1.0491% |
18 | FameEX | CRV-USDT | $1.13 0.0002890 Eth | $5,145,706.00 4,366,371.421 CRV | 0.9929% |
19 | BYDFi | CRV-USDT | $1.14 0.0002908 Eth | $4,752,804.00 4,172,861.200 CRV | 0.9489% |
20 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.14 0.0002903 Eth | $4,572,918.00 3,878,256.174 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.8819% |
21 | Dex-Trade | CRV-USDT | $1.14 0.0002910 Eth | $4,180,618.00 3,668,027.900 CRV | 0.8341% |
22 | Biconomy.com | CRV-USDT | $1.14 0.0002912 Eth | $4,129,802.00 3,515,103.800 CRV | 0.7993% |
23 | BTSE | CRV-USDT | $1.14 0.0002916 Eth | $3,921,877.00 3,434,501.995 CRV | 0.7810% |
24 | HitBTC | CRV-USDT | $1.14 0.0002910 Eth | $3,731,316.00 3,173,348.900 CRV | 0.7216% |
25 | FMFW.io | CRV-USDT | $1.14 0.0002910 Eth | $3,617,200.00 3,173,348.900 CRV | 0.7216% |
26 | Coinstore | CRV-USDT | $1.14 0.0002911 Eth | $3,406,513.00 2,896,209.500 CRV | 0.6586% |
27 | Bitkub | CRV-THB | $1.13 0.0002894 Eth | $3,241,438.00 2,859,474.507 CRV | 0.6503% |
28 | Bitrue | CRV-USDT | $1.14 0.0002908 Eth | $3,152,134.00 2,767,020.810 CRV | 0.6292% |
29 | Phemex | CRV-USDT | $1.14 0.0002903 Eth | $3,096,638.00 2,723,055.160 CRV | 0.6192% |
30 | Bullish | CRV-USDC | $1.14 0.0002910 Eth | $2,620,523.00 2,245,530.622 CRV | 0.5106% |
31 | Toobit | CRV-USDT | $1.14 0.0002904 Eth | $2,549,707.00 2,165,392.800 CRV | 0.4924% |
32 | Bithumb | CRV-KRW | $1.13 0.0002890 Eth | $2,424,615.00 2,141,793.043 CRV | 0.4870% |
33 | CoinEx | CRV-USDT | $1.13 0.0002892 Eth | $2,365,970.00 2,031,705.784 CRV | 0.4620% |
34 | Hibt | CRV-USDT | $1.14 0.0002900 Eth | $2,313,266.00 1,959,961.283 CRV | 0.4457% |
35 | WhiteBIT | CRV-BTC | $1.14 0.0002914 Eth | $2,295,651.00 2,011,465.500 CRV | 0.4574% |
36 | Binance | CRV-BTC | $1.14 0.0002909 Eth | $2,252,176.00 1,898,982.700 CRV | 0.4318% |
37 | Ourbit | CRV-USDT | $1.14 0.0002912 Eth | $2,195,324.00 1,865,415.610 CRV | 0.4242% |
38 | BingX | CRV-USDT | $1.14 0.0002909 Eth | $2,189,830.00 1,861,467.904 CRV | 0.4233% |
39 | Luno | CRV-MYR | $1.14 0.0002899 Eth | $2,045,143.00 1,801,086.170 CRV | 0.4096% |
40 | PointPay | CRV-USDT | $1.14 0.0002910 Eth | $1,956,523.00 1,663,796.203 CRV | 0.3784% |
41 | Hotcoin | CRV-USDT | $1.14 0.0002909 Eth | $1,930,656.00 1,694,098.900 CRV | 0.3852% |
42 | Binance | CRV-USDC | $1.14 0.0002908 Eth | $1,724,957.00 1,475,727.500 CRV | 0.3356% |
43 | WEEX | CRV-USDT | $1.14 0.0002908 Eth | $1,502,380.00 1,318,529.692 CRV | 0.2998% |
44 | Binance | CRV-TRY | $1.13 0.0002887 Eth | $1,480,343.00 1,263,597.700 CRV | 0.2873% |
45 | BitMart | CRV-USDT | $1.14 0.0002910 Eth | $1,337,155.00 1,172,941.120 CRV | 0.2667% |
46 | Bitvavo | CRV-EUR | $1.14 0.0002910 Eth | $1,268,311.00 1,112,484.698 CRV | 0.2530% |
47 | WhiteBIT | CRV-TRY | $1.14 0.0002918 Eth | $1,158,033.00 1,013,437.900 CRV | 0.2305% |
48 | P2B | CRV-USD | $1.14 0.0002903 Eth | $892,383.00 784,857.640 CRV | 0.1785% |
49 | Icrypex | CRV-USDT | $1.14 0.0002906 Eth | $856,974.00 752,933.505 CRV | 0.1712% |
50 | Nonkyc.io | CRV-USDT | $1.14 0.0002905 Eth | $750,655.00 636,104.957 CRV | 0.1447% |
51 | BitDelta | CRV-USDT | $1.14 0.0002910 Eth | $717,101.00 609,893.900 CRV | 0.1387% |
52 | Upbit | CRV-BTC | $1.13 0.0002889 Eth | $477,200.00 421,707.254 CRV | 0.0959% |
53 | LATOKEN | CRV-BTC | $1.13 0.0002894 Eth | $459,041.00 404,946.934 CRV | 0.0921% |
54 | BloFin | CRV-USDT | $1.13 0.0002892 Eth | $444,285.00 381,194.000 CRV | 0.0867% |
55 | Kraken | CRV-EUR | $1.14 0.0002910 Eth | $439,689.00 385,738.926 CRV | 0.0877% |
56 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.14 0.0002896 Eth | $411,272.00 428,412.485 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0974% |
57 | Bitazza | CRV-USDT | $1.14 0.0002898 Eth | $366,903.00 313,264.200 CRV | 0.0712% |
58 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.13 0.0002877 Eth | $354,453.00 356,242.171 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0810% |
59 | Gemini | CRV-USD | $1.14 0.0002906 Eth | $354,234.00 311,140.793 CRV | 0.0708% |
60 | AscendEX (BitMax) | CRV-USDT | $1.14 0.0002903 Eth | $345,177.00 303,558.100 CRV | 0.0690% |
61 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.13 0.0002885 Eth | $322,521.00 274,273.093 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0624% |
62 | Pionex | CRV-USDT | $1.14 0.0002913 Eth | $314,908.00 267,221.663 CRV | 0.0608% |
63 | Tapbit | CRV-USDT | $1.13 0.0002892 Eth | $292,367.00 248,783.800 CRV | 0.0566% |
64 | OKX | CRV-USDC | $1.14 0.0002909 Eth | $285,374.00 244,830.360 CRV | 0.0557% |
65 | Coinbase Exchange | CRV-BTC | $1.14 0.0002897 Eth | $271,102.00 238,779.500 CRV | 0.0543% |
66 | Coinbase Exchange | CRV-EUR | $1.14 0.0002897 Eth | $261,988.00 230,713.580 CRV | 0.0525% |
67 | Trubit | CRV-USDT | $1.14 0.0002900 Eth | $255,441.00 2,672,110.500 CRV | 0.6076% |
68 | BVOX | CRV-USDT | $1.13 0.0002887 Eth | $246,293.00 209,994.600 CRV | 0.0478% |
69 | Bitso | CRV-USD | $1.13 0.0002891 Eth | $207,418.00 183,068.386 CRV | 0.0416% |
70 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.14 0.0002913 Eth | $144,149.00 121,637.357 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0277% |
71 | Coinbase Exchange | CRV-GBP | $1.13 0.0002884 Eth | $142,037.00 125,627.190 CRV | 0.0286% |
72 | BigONE | CRV-USDT | $1.13 0.0002889 Eth | $132,742.00 117,153.291 CRV | 0.0266% |
73 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.14 0.0002900 Eth | $131,267.00 111,576.403 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0254% |
74 | TokoCrypto | CRV-USDT | $1.14 0.0002914 Eth | $131,138.00 114,921.413 CRV | 0.0261% |
75 | LATOKEN | CRV-USDT | $1.13 0.0002886 Eth | $129,551.00 114,737.836 CRV | 0.0261% |
76 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.14 0.0002913 Eth | $89,228.00 75,723.892 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0172% |
77 | Bitlo | CRV-TRY | $1.14 0.0002905 Eth | $64,735.00 55,214.295 CRV | 0.0126% |
78 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.13 0.0002884 Eth | $57,196.00 48,766.532 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0111% |
79 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.14 0.0002899 Eth | $43,306.00 36,462.573 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0083% |
80 | WEEX | CRV-USDC | $1.13 0.0002889 Eth | $43,297.00 36,249.000 CRV | 0.0082% |
81 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.14 0.0002919 Eth | $40,219.00 33,538.188 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0076% |
82 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.14 0.0002904 Eth | $30,246.00 25,506.958 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0058% |
83 | Nonkyc.io | CRV-BTC | $1.13 0.0002886 Eth | $25,830.00 21,899.199 CRV | 0.0050% |
84 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.14 0.0002907 Eth | $22,138.00 18,608.849 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0042% |
85 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.14 0.0002903 Eth | $16,549.49 14,177.375 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0032% |
86 | HashKey Global | CRV-USDT | $1.13 0.0002895 Eth | $15,931.13 13,615.100 CRV | 0.0031% |
87 | Globe | CRV-USDT | $1.14 0.0002895 Eth | $10,539.38 9,001.256 CRV | 0.0020% |
88 | Korbit | CRV-KRW | $1.11 0.0002845 Eth | $8,454.92 7,064.905 CRV | 0.0016% |
89 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.14 0.0002899 Eth | $5,849.21 4,912.971 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0011% |
90 | Gate.io | CRV-ETH | $1.13 0.0002894 Eth | $3,598.55 2,997.640 CRV | 0.0007% |
91 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X912CE59144191C1204E64559FE8253A0E49E6548 | $1.13 0.0002892 Eth | $3,381.25 2,851.016 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0006% |
92 | Luno | CRV-XBT | $1.13 0.0002896 Eth | $2,840.26 2,503.300 CRV | 0.0006% |
93 | Balancer V2 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $1.15 0.0002927 Eth | $1,756.17 1,420.342 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0003% |
94 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.15 0.0002929 Eth | $1,469.52 1,261.578 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0003% |
95 | Nominex | CRV-USDT | $1.14 0.0002909 Eth | $498.91 438.405 CRV | 0.0001% |
96 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.14 0.0002910 Eth | $333.96 280.510 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
97 | Uniswap V3 (Polygon) | 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A-0X172370D5CD63279EFA6D502DAB29171933A610AF | $1.14 0.0002902 Eth | $307.75 145.327 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A | 0.0000% |
98 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.13 0.0002873 Eth | $231.91 197.914 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0000% |
99 | Swapr (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.14 0.0002918 Eth | $158.49 132.061 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.14 0.0002910 Eth | $80.65 67.693 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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