Overview
Max Total Supply
2,201,909,160.805322713485972591 CRV
Holders
88,659 ( 0.056%)
Market
Price
$1.00 @ 0.000282 ETH (-7.60%)
Onchain Market Cap
$2,212,149,369.64
Circulating Supply Market Cap
$1,256,238,096.35
Other Info
Token Contract (WITH 18 Decimals)
Balance
933.92503260428383886 CRVValue
$938.27 ( ~0.262980662842133 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.013 0.0002851 Eth | $277,791,641.00 253,943,682.500 CRV | 28.3041% |
2 | OKX | CRV-USDT | $1.017 0.0002856 Eth | $79,963,098.00 73,384,420.615 CRV | 8.1793% |
3 | Gate.io | CRV-USDT | $1.019 0.0002860 Eth | $68,689,533.00 61,875,433.680 CRV | 6.8965% |
4 | Coinbase Exchange | CRV-USD | $1.004 0.0002843 Eth | $43,591,144.00 43,421,798.730 CRV | 4.8397% |
5 | Bitget | CRV-USDT | $1.017 0.0002862 Eth | $40,776,980.00 37,494,499.191 CRV | 4.1791% |
6 | Bybit | CRV-USDT | $1.016 0.0002858 Eth | $40,494,333.00 37,738,834.050 CRV | 4.2063% |
7 | HTX | CRV-USDT | $1.015 0.0002857 Eth | $38,069,749.00 34,580,927.523 CRV | 3.8543% |
8 | Bitunix | CRV-USDT | $1.015 0.0002859 Eth | $34,948,137.00 34,414,424.500 CRV | 3.8358% |
9 | MEXC | CRV-USDT | $1.021 0.0002865 Eth | $26,734,659.00 26,197,521.334 CRV | 2.9199% |
10 | XT.COM | CRV-USDT | $1.01 0.0002844 Eth | $22,221,116.00 20,315,656.600 CRV | 2.2643% |
11 | Niza Global | CRV-USD | $1.008 0.0002852 Eth | $17,134,306.00 16,034,799.699 CRV | 1.7872% |
12 | Slex | CRV-USDT | $1.017 0.0002856 Eth | $16,807,438.00 15,085,299.900 CRV | 1.6814% |
13 | Kraken | CRV-USD | $1.016 0.0002854 Eth | $16,276,153.00 16,019,835.797 CRV | 1.7855% |
14 | DigiFinex | CRV-USDT | $1.021 0.0002873 Eth | $14,108,392.00 13,821,998.400 CRV | 1.5406% |
15 | KuCoin | CRV-USDT | $1.018 0.0002858 Eth | $11,775,247.00 11,565,919.258 CRV | 1.2891% |
16 | FameEX | CRV-USDT | $1.005 0.0002848 Eth | $11,076,889.00 10,152,313.678 CRV | 1.1316% |
17 | LBank | CRV-USDT | $1.019 0.0002869 Eth | $10,993,812.00 10,784,418.180 CRV | 1.2020% |
18 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.9981 0.0002828 Eth | $9,997,151.00 9,553,300.641 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 1.0648% |
19 | BYDFi | CRV-USDT | $0.9972 0.0002825 Eth | $9,825,190.00 9,852,760.100 CRV | 1.0982% |
20 | Biconomy.com | CRV-USDT | $1.016 0.0002858 Eth | $7,634,734.00 6,958,238.600 CRV | 0.7756% |
21 | WhiteBIT | CRV-BTC | $1.002 0.0002836 Eth | $7,365,204.00 7,351,318.800 CRV | 0.8194% |
22 | Coinstore | CRV-USDT | $1.016 0.0002859 Eth | $6,684,024.00 6,086,392.200 CRV | 0.6784% |
23 | Dex-Trade | CRV-USDT | $0.9903 0.0002808 Eth | $6,313,488.00 6,375,073.394 CRV | 0.7106% |
24 | Bitvavo | CRV-EUR | $1.012 0.0002855 Eth | $6,270,629.00 6,198,542.747 CRV | 0.6909% |
25 | Bithumb | CRV-KRW | $1.016 0.0002864 Eth | $6,046,596.00 5,949,504.517 CRV | 0.6631% |
26 | Currency.com | CRV-USD | $1.008 0.0002855 Eth | $5,693,175.00 5,649,953.021 CRV | 0.6297% |
27 | Toobit | CRV-USDT | $1.004 0.0002835 Eth | $5,381,094.00 4,905,400.400 CRV | 0.5467% |
28 | Bitrue | CRV-USDT | $1.017 0.0002862 Eth | $5,353,889.00 5,264,777.500 CRV | 0.5868% |
29 | HitBTC | CRV-USDT | $1.005 0.0002842 Eth | $5,106,332.00 4,649,529.300 CRV | 0.5182% |
30 | BingX | CRV-USDT | $1.017 0.0002863 Eth | $5,075,307.00 4,669,180.710 CRV | 0.5204% |
31 | Bitkub | CRV-THB | $1.007 0.0002844 Eth | $5,020,223.00 4,984,785.656 CRV | 0.5556% |
32 | Binance | CRV-BTC | $1.014 0.0002852 Eth | $5,012,700.00 4,708,120.900 CRV | 0.5248% |
33 | Hibt | CRV-USDT | $1.012 0.0002864 Eth | $4,785,734.00 4,399,868.235 CRV | 0.4904% |
34 | Ourbit | CRV-USDT | $1.017 0.0002859 Eth | $4,722,316.00 4,326,646.140 CRV | 0.4822% |
35 | FMFW.io | CRV-USDT | $1.006 0.0002845 Eth | $4,675,438.00 4,649,529.300 CRV | 0.5182% |
36 | BTSE | CRV-USDT | $1.004 0.0002839 Eth | $4,653,794.00 4,634,746.982 CRV | 0.5166% |
37 | PointPay | CRV-USDT | $1.002 0.0002839 Eth | $4,583,463.00 4,199,777.865 CRV | 0.4681% |
38 | Binance | CRV-USDC | $1.001 0.0002833 Eth | $4,551,158.00 4,196,451.000 CRV | 0.4677% |
39 | Binance | CRV-TRY | $1.012 0.0002864 Eth | $4,361,998.00 3,847,213.400 CRV | 0.4288% |
40 | Luno | CRV-MYR | $1.004 0.0002848 Eth | $4,308,246.00 4,291,852.480 CRV | 0.4784% |
41 | Trubit | CRV-USDT | $1.016 0.0002867 Eth | $4,090,107.00 3,810,893.000 CRV | 0.4248% |
42 | Bullish | CRV-USDC | $1.017 0.0002857 Eth | $3,962,685.00 3,642,261.494 CRV | 0.4060% |
43 | FMCPAY | CRV-USDT | $1.007 0.0002849 Eth | $3,467,913.00 3,155,510.300 CRV | 0.3517% |
44 | Phemex | CRV-USDT | $1.002 0.0002836 Eth | $3,361,899.00 3,354,536.100 CRV | 0.3739% |
45 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.003 0.0002831 Eth | $3,250,116.00 3,146,005.846 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3506% |
46 | Icrypex | CRV-USDT | $0.9976 0.0002826 Eth | $3,046,451.00 3,053,774.145 CRV | 0.3404% |
47 | CoinEx | CRV-USDT | $1.015 0.0002856 Eth | $2,608,502.00 2,370,631.584 CRV | 0.2642% |
48 | Hotcoin | CRV-USDT | $1.008 0.0002851 Eth | $2,605,436.00 2,585,538.344 CRV | 0.2882% |
49 | BitMart | CRV-USDT | $0.9972 0.0002821 Eth | $2,500,822.00 2,507,860.020 CRV | 0.2795% |
50 | Bit2Me | CRV-EUR | $1.00 0.0002830 Eth | $2,490,221.00 2,374,956.213 CRV | 0.2647% |
51 | Kraken | CRV-EUR | $1.018 0.0002859 Eth | $2,479,077.00 2,435,160.879 CRV | 0.2714% |
52 | WhiteBIT | CRV-TRY | $1.028 0.0002886 Eth | $1,894,277.00 1,843,468.400 CRV | 0.2055% |
53 | Coinbase Exchange | CRV-EUR | $0.9978 0.0002826 Eth | $1,583,198.00 1,586,675.840 CRV | 0.1768% |
54 | WEEX | CRV-USDT | $1.029 0.0002896 Eth | $1,500,500.00 1,458,317.539 CRV | 0.1625% |
55 | P2B | CRV-USD | $1.01 0.0002849 Eth | $1,160,746.00 1,149,253.770 CRV | 0.1281% |
56 | OKX | CRV-USDC | $1.015 0.0002849 Eth | $1,090,679.00 1,028,698.626 CRV | 0.1147% |
57 | BitDelta | CRV-USDT | $1.003 0.0002842 Eth | $1,081,989.00 989,480.200 CRV | 0.1103% |
58 | LATOKEN | CRV-BTC | $1.001 0.0002836 Eth | $994,526.00 993,568.654 CRV | 0.1107% |
59 | Nonkyc.io | CRV-USDT | $1.014 0.0002857 Eth | $963,018.00 879,979.845 CRV | 0.0981% |
60 | Pionex | CRV-USDT | $1.008 0.0002855 Eth | $932,873.00 859,170.342 CRV | 0.0958% |
61 | BloFin | CRV-USDT | $1.006 0.0002849 Eth | $872,497.00 799,511.000 CRV | 0.0891% |
62 | Gemini | CRV-USD | $1.01 0.0002835 Eth | $804,024.00 796,142.413 CRV | 0.0887% |
63 | Upbit | CRV-BTC | $1.006 0.0002831 Eth | $708,533.00 704,306.079 CRV | 0.0785% |
64 | Coinbase Exchange | CRV-GBP | $0.9943 0.0002816 Eth | $651,918.00 655,668.420 CRV | 0.0731% |
65 | Tapbit | CRV-USDT | $1.013 0.0002859 Eth | $614,089.00 563,715.000 CRV | 0.0628% |
66 | Curve (Optimism) | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.00 0.0002829 Eth | $584,995.00 642,923.855 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0717% |
67 | Coinbase Exchange | CRV-BTC | $1.002 0.0002839 Eth | $535,492.00 534,183.080 CRV | 0.0595% |
68 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.012 0.0002854 Eth | $455,574.00 519,651.992 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0579% |
69 | Bitso | CRV-USD | $1.011 0.0002838 Eth | $448,023.00 443,170.146 CRV | 0.0494% |
70 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.9889 0.0002798 Eth | $425,845.00 422,664.350 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0471% |
71 | Bitazza | CRV-USDT | $0.9842 0.0002788 Eth | $421,951.00 382,157.700 CRV | 0.0426% |
72 | WEEX | CRV-USDC | $1.001 0.0002831 Eth | $409,278.00 369,705.000 CRV | 0.0412% |
73 | BVOX | CRV-USDT | $1.004 0.0002842 Eth | $362,926.00 327,838.800 CRV | 0.0365% |
74 | BigONE | CRV-USDT | $1.017 0.0002871 Eth | $327,832.00 322,456.660 CRV | 0.0359% |
75 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.003 0.0002841 Eth | $306,588.00 304,666.209 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0340% |
76 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.014 0.0002869 Eth | $280,351.00 256,229.925 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0286% |
77 | LATOKEN | CRV-USDT | $1.009 0.0002856 Eth | $264,809.00 262,317.993 CRV | 0.0292% |
78 | KickEX | CRV-USDT | $1.004 0.0002837 Eth | $225,010.00 224,155.592 CRV | 0.0250% |
79 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.9947 0.0002818 Eth | $209,534.00 104,157.182 0X4200000000000000000000000000000000000042 | 0.0116% |
80 | TokoCrypto | CRV-USDT | $0.9999 0.0002832 Eth | $186,187.00 186,207.883 CRV | 0.0208% |
81 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.00 0.0002833 Eth | $150,409.00 142,630.074 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0159% |
82 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.002 0.0002824 Eth | $73,250.00 63,807.159 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0071% |
83 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.01 0.0002845 Eth | $73,187.00 74,693.424 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0083% |
84 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.9956 0.0002817 Eth | $68,196.00 67,119.231 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0075% |
85 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.012 0.0002865 Eth | $65,591.00 61,155.443 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0068% |
86 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.005 0.0002841 Eth | $59,926.00 59,795.052 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0067% |
87 | Azbit | CRV-USDT | $1.001 0.0002832 Eth | $55,882.00 50,388.645 CRV | 0.0056% |
88 | Nonkyc.io | CRV-BTC | $0.9995 0.0002825 Eth | $34,236.00 31,961.281 CRV | 0.0036% |
89 | Gate.io | CRV-ETH | $1.009 0.0002832 Eth | $20,291.00 19,005.040 CRV | 0.0021% |
90 | HashKey Global | CRV-USDT | $0.9974 0.0002826 Eth | $15,144.65 13,694.700 CRV | 0.0015% |
91 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.002 0.0002836 Eth | $9,720.35 9,524.260 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0011% |
92 | Luno | CRV-XBT | $1.003 0.0002833 Eth | $8,133.57 8,107.300 CRV | 0.0009% |
93 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.002 0.0002836 Eth | $5,320.51 5,183.300 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0006% |
94 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.005 0.0002845 Eth | $4,476.17 4,244.812 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0005% |
95 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.007 0.0002837 Eth | $2,588.43 2,459.039 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0003% |
96 | Uniswap V3 (Polygon) | 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A-0X172370D5CD63279EFA6D502DAB29171933A610AF | $1.004 0.0002849 Eth | $999.95 512.706 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A | 0.0001% |
97 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.008 0.0002852 Eth | $815.65 787.041 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
98 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.031 0.0002916 Eth | $524.61 475.766 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0001% |
99 | Nominex | CRV-USDT | $1.00 0.0002832 Eth | $436.40 436.404 CRV | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.013 0.0002872 Eth | $154.29 153.318 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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