Overview
Max Total Supply
2,201,640,983.203898837995514483 CRV
Holders
88,580 ( -0.035%)
Market
Price
$1.08 @ 0.000283 ETH (-11.76%)
Onchain Market Cap
$2,382,307,909.91
Circulating Supply Market Cap
$1,352,616,279.97
Other Info
Token Contract (WITH 18 Decimals)
Balance
1,041.66 CRVValue
$1,127.14 ( ~0.294843533938843 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Websea | CRV-USDT | $1.083 0.0002840 Eth | $64,705,687.00 0.000 CRV | 0.0000% |
2 | WhiteBIT | CRV-USDT | $1.093 0.0002857 Eth | $64,668,148.00 59,188,771.783 CRV | 16.1077% |
3 | Gate.io | CRV-USDT | $1.084 0.0002848 Eth | $36,756,861.00 32,731,602.950 CRV | 8.9076% |
4 | OKX | CRV-USDT | $1.086 0.0002846 Eth | $35,865,176.00 31,932,831.430 CRV | 8.6902% |
5 | Bybit | CRV-USDT | $1.093 0.0002872 Eth | $22,853,957.00 20,446,616.600 CRV | 5.5644% |
6 | Slex | CRV-USDT | $1.085 0.0002850 Eth | $20,830,384.00 18,314,297.300 CRV | 4.9841% |
7 | Coinbase Exchange | CRV-USD | $1.092 0.0002855 Eth | $17,329,609.00 15,876,875.070 CRV | 4.3207% |
8 | Bitunix | CRV-USDT | $1.088 0.0002853 Eth | $16,728,913.00 15,368,846.600 CRV | 4.1825% |
9 | MEXC | CRV-USDT | $1.093 0.0002859 Eth | $16,404,484.00 15,006,428.988 CRV | 4.0839% |
10 | HTX | CRV-USDT | $1.082 0.0002843 Eth | $15,716,434.00 14,135,903.108 CRV | 3.8470% |
11 | Bitget | CRV-USDT | $1.089 0.0002861 Eth | $15,241,264.00 13,332,511.324 CRV | 3.6283% |
12 | XT.COM | CRV-USDT | $1.082 0.0002841 Eth | $9,730,638.00 8,679,215.700 CRV | 2.3620% |
13 | BTSE | CRV-USDT | $1.082 0.0002839 Eth | $9,340,252.00 8,629,190.954 CRV | 2.3484% |
14 | LBank | CRV-USDT | $1.089 0.0002852 Eth | $7,360,768.00 6,758,683.170 CRV | 1.8393% |
15 | Niza Global | CRV-USD | $1.082 0.0002837 Eth | $7,259,615.00 6,502,059.953 CRV | 1.7695% |
16 | Kraken | CRV-USD | $1.091 0.0002866 Eth | $7,165,943.00 6,568,233.405 CRV | 1.7875% |
17 | DigiFinex | CRV-USDT | $1.086 0.0002853 Eth | $6,452,160.00 5,941,518.700 CRV | 1.6169% |
18 | Bitvavo | CRV-EUR | $1.091 0.0002855 Eth | $5,450,567.00 4,996,513.413 CRV | 1.3598% |
19 | Trubit | CRV-USDT | $1.085 0.0002844 Eth | $4,894,784.00 4,320,947.200 CRV | 1.1759% |
20 | FameEX | CRV-USDT | $1.08 0.0002834 Eth | $4,849,302.00 4,320,623.715 CRV | 1.1758% |
21 | BYDFi | CRV-USDT | $1.084 0.0002841 Eth | $4,619,229.00 4,260,883.800 CRV | 1.1596% |
22 | KuCoin | CRV-USDT | $1.086 0.0002854 Eth | $4,200,021.00 3,865,844.897 CRV | 1.0521% |
23 | Dex-Trade | CRV-USDT | $1.084 0.0002840 Eth | $3,947,118.00 3,639,905.600 CRV | 0.9906% |
24 | Biconomy.com | CRV-USDT | $1.089 0.0002850 Eth | $3,820,470.00 3,397,805.200 CRV | 0.9247% |
25 | Coinstore | CRV-USDT | $1.092 0.0002859 Eth | $3,337,693.00 2,972,791.200 CRV | 0.8090% |
26 | HitBTC | CRV-USDT | $1.091 0.0002858 Eth | $3,279,796.00 2,920,892.900 CRV | 0.7949% |
27 | FMFW.io | CRV-USDT | $1.091 0.0002855 Eth | $3,187,249.00 2,921,828.000 CRV | 0.7951% |
28 | Phemex | CRV-USDT | $1.083 0.0002845 Eth | $3,175,932.00 2,933,027.670 CRV | 0.7982% |
29 | FMCPAY | CRV-USDT | $1.084 0.0002838 Eth | $3,016,687.00 2,658,029.780 CRV | 0.7234% |
30 | Luno | CRV-MYR | $1.092 0.0002863 Eth | $2,948,064.00 2,700,865.690 CRV | 0.7350% |
31 | Bitkub | CRV-THB | $1.096 0.0002867 Eth | $2,523,155.00 2,303,112.843 CRV | 0.6268% |
32 | Bullish | CRV-USDC | $1.084 0.0002837 Eth | $2,439,597.00 2,137,111.017 CRV | 0.5816% |
33 | Toobit | CRV-USDT | $1.083 0.0002844 Eth | $2,417,612.00 2,155,487.900 CRV | 0.5866% |
34 | Binance | CRV-BTC | $1.087 0.0002856 Eth | $2,208,402.00 2,005,541.700 CRV | 0.5458% |
35 | Hibt | CRV-USDT | $1.092 0.0002855 Eth | $2,146,560.00 1,910,076.350 CRV | 0.5198% |
36 | Binance | CRV-TRY | $1.086 0.0002843 Eth | $2,061,772.00 1,807,946.400 CRV | 0.4920% |
37 | Ourbit | CRV-USDT | $1.092 0.0002859 Eth | $2,049,067.00 1,826,385.980 CRV | 0.4970% |
38 | PointPay | CRV-USDT | $1.081 0.0002833 Eth | $2,002,119.00 1,785,165.312 CRV | 0.4858% |
39 | Currency.com | CRV-USD | $1.084 0.0002839 Eth | $1,952,197.00 1,800,172.327 CRV | 0.4899% |
40 | BingX | CRV-USDT | $1.09 0.0002864 Eth | $1,950,316.00 1,732,693.003 CRV | 0.4715% |
41 | Bithumb | CRV-KRW | $1.074 0.0002822 Eth | $1,814,406.00 1,689,394.235 CRV | 0.4598% |
42 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.087 0.0002844 Eth | $1,807,548.00 1,635,404.454 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4451% |
43 | CoinEx | CRV-USDT | $1.086 0.0002853 Eth | $1,638,212.00 1,458,695.079 CRV | 0.3970% |
44 | WEEX | CRV-USDT | $1.083 0.0002844 Eth | $1,501,730.00 1,386,264.875 CRV | 0.3773% |
45 | Binance | CRV-USDC | $1.079 0.0002834 Eth | $1,465,820.00 1,295,640.300 CRV | 0.3526% |
46 | Hotcoin | CRV-USDT | $1.093 0.0002860 Eth | $1,426,814.00 1,305,737.000 CRV | 0.3553% |
47 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.087 0.0002843 Eth | $1,188,820.00 1,242,744.724 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.3382% |
48 | BitMart | CRV-USDT | $1.089 0.0002862 Eth | $1,186,114.00 1,088,980.260 CRV | 0.2964% |
49 | Bit2Me | CRV-EUR | $1.087 0.0002855 Eth | $1,179,028.00 1,021,785.340 CRV | 0.2781% |
50 | Kraken | CRV-EUR | $1.08 0.0002838 Eth | $1,124,941.00 1,041,338.784 CRV | 0.2834% |
51 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.084 0.0002849 Eth | $987,779.00 266.368 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0001% |
52 | P2B | CRV-USD | $1.084 0.0002838 Eth | $836,832.00 771,984.830 CRV | 0.2101% |
53 | LocalTrade | CRV-USDT | $1.086 0.0002853 Eth | $800,233.00 736,892.085 CRV | 0.2005% |
54 | WhiteBIT | CRV-BTC | $1.095 0.0002864 Eth | $770,757.00 703,855.600 CRV | 0.1915% |
55 | BitDelta | CRV-USDT | $1.087 0.0002846 Eth | $675,031.00 592,260.400 CRV | 0.1612% |
56 | Coinbase Exchange | CRV-EUR | $1.089 0.0002848 Eth | $556,287.00 510,937.790 CRV | 0.1390% |
57 | OKX | CRV-USDC | $1.086 0.0002845 Eth | $545,638.00 478,352.559 CRV | 0.1302% |
58 | BloFin | CRV-USDT | $1.091 0.0002856 Eth | $465,674.00 413,455.800 CRV | 0.1125% |
59 | LATOKEN | CRV-BTC | $1.088 0.0002859 Eth | $433,470.00 398,355.673 CRV | 0.1084% |
60 | WhiteBIT | CRV-TRY | $1.098 0.0002873 Eth | $420,189.00 382,517.700 CRV | 0.1041% |
61 | Bitazza | CRV-USDT | $1.091 0.0002856 Eth | $412,372.00 362,401.200 CRV | 0.0986% |
62 | WEEX | CRV-USDC | $1.078 0.0002834 Eth | $374,604.00 329,308.000 CRV | 0.0896% |
63 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.083 0.0002827 Eth | $341,869.00 358,168.354 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0975% |
64 | Pionex | CRV-USDT | $1.086 0.0002842 Eth | $333,274.00 295,881.340 CRV | 0.0805% |
65 | Gemini | CRV-USD | $1.095 0.0002876 Eth | $322,828.00 294,846.755 CRV | 0.0802% |
66 | Upbit | CRV-BTC | $1.087 0.0002856 Eth | $297,231.00 273,363.671 CRV | 0.0744% |
67 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.081 0.0002840 Eth | $269,105.00 254,125.882 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0692% |
68 | Curve (Optimism) | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.079 0.0002824 Eth | $266,276.00 278,843.535 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0759% |
69 | Coinbase Exchange | CRV-GBP | $1.09 0.0002851 Eth | $246,109.00 225,780.800 CRV | 0.0614% |
70 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.09 0.0002854 Eth | $244,035.00 226,505.241 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0616% |
71 | Bitso | CRV-USD | $1.088 0.0002848 Eth | $238,068.00 218,822.911 CRV | 0.0596% |
72 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.076 0.0002817 Eth | $233,407.00 38,437.900 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0105% |
73 | BigONE | CRV-USDT | $1.08 0.0002836 Eth | $198,695.00 184,040.666 CRV | 0.0501% |
74 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.087 0.0002847 Eth | $196,702.00 172,825.919 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0470% |
75 | BVOX | CRV-USDT | $1.088 0.0002849 Eth | $196,096.00 173,611.900 CRV | 0.0472% |
76 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.089 0.0002852 Eth | $153,509.00 142,806.110 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0389% |
77 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.079 0.0002824 Eth | $126,226.00 51,911.545 0X4200000000000000000000000000000000000042 | 0.0141% |
78 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.081 0.0002839 Eth | $125,060.00 110,835.071 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0302% |
79 | LATOKEN | CRV-USDT | $1.083 0.0002844 Eth | $117,643.00 108,628.415 CRV | 0.0296% |
80 | TokoCrypto | CRV-USDT | $1.089 0.0002850 Eth | $95,758.00 87,922.365 CRV | 0.0239% |
81 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.081 0.0002840 Eth | $69,227.00 65,226.810 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0178% |
82 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.091 0.0002857 Eth | $62,071.00 55,737.682 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0152% |
83 | Coinbase Exchange | CRV-BTC | $1.096 0.0002866 Eth | $59,942.00 54,698.530 CRV | 0.0149% |
84 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.087 0.0002845 Eth | $32,058.00 28,367.235 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0077% |
85 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.084 0.0002834 Eth | $29,483.00 26,967.671 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0073% |
86 | Nonkyc.io | CRV-BTC | $1.088 0.0002845 Eth | $27,273.00 24,366.582 CRV | 0.0066% |
87 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.087 0.0002842 Eth | $25,653.00 23,085.755 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0063% |
88 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.095 0.0002865 Eth | $17,908.04 16,135.553 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0044% |
89 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.081 0.0002824 Eth | $12,959.19 11,796.343 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0032% |
90 | Luno | CRV-XBT | $1.073 0.0002818 Eth | $5,405.46 5,039.200 CRV | 0.0014% |
91 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.081 0.0002841 Eth | $4,521.88 4,222.017 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0011% |
92 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.092 0.0002860 Eth | $3,997.34 3,390.372 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0009% |
93 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.09 0.0002851 Eth | $2,268.38 2,005.938 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0005% |
94 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.088 0.0002848 Eth | $1,850.99 1,665.992 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0005% |
95 | Balancer V2 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $1.089 0.0002860 Eth | $1,556.51 1,378.618 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0004% |
96 | Uniswap V3 (Polygon) | 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A-0X172370D5CD63279EFA6D502DAB29171933A610AF | $1.079 0.0002830 Eth | $1,391.51 590.372 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A | 0.0002% |
97 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.084 0.0002835 Eth | $309.91 275.260 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
98 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.094 0.0002862 Eth | $245.54 213.149 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0001% |
99 | Nominex | CRV-USDT | $1.095 0.0002863 Eth | $107.30 97.945 CRV | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.078 0.0002818 Eth | $79.58 71.522 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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