Overview
Max Total Supply
2,200,186,921.969923316018718684 CRV
Holders
88,532 (0.00%)
Market
Price
$1.06 @ 0.000275 ETH (-2.69%)
Onchain Market Cap
$2,325,526,245.55
Circulating Supply Market Cap
$1,317,206,122.05
Other Info
Token Contract (WITH 18 Decimals)
Balance
5.50345923991932336 CRVValue
$5.82 ( ~0.00151686330029539 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.076 0.0002807 Eth | $231,595,833.00 212,739,946.200 CRV | 22.6670% |
2 | Websea | CRV-USDT | $1.069 0.0002799 Eth | $121,965,228.00 0.000 CRV | 0.0000% |
3 | Gate.io | CRV-USDT | $1.073 0.0002809 Eth | $109,635,855.00 100,574,164.416 CRV | 10.7160% |
4 | WhiteBIT | CRV-USDT | $1.075 0.0002806 Eth | $96,058,283.00 89,321,876.640 CRV | 9.5171% |
5 | OKX | CRV-USDT | $1.072 0.0002798 Eth | $73,509,121.00 67,448,310.513 CRV | 7.1865% |
6 | MEXC | CRV-USDT | $1.058 0.0002775 Eth | $56,444,173.00 53,329,424.258 CRV | 5.6821% |
7 | Bitget | CRV-USDT | $1.076 0.0002808 Eth | $47,853,466.00 43,086,895.595 CRV | 4.5908% |
8 | Coinbase Exchange | CRV-USD | $1.073 0.0002812 Eth | $40,040,593.00 37,313,012.210 CRV | 3.9756% |
9 | Bybit | CRV-USDT | $1.077 0.0002810 Eth | $40,008,487.00 36,492,042.410 CRV | 3.8882% |
10 | HTX | CRV-USDT | $1.077 0.0002820 Eth | $35,499,777.00 32,493,974.246 CRV | 3.4622% |
11 | Bitunix | CRV-USDT | $1.072 0.0002804 Eth | $35,426,281.00 33,055,321.700 CRV | 3.5220% |
12 | Slex | CRV-USDT | $1.071 0.0002803 Eth | $20,265,395.00 18,580,767.400 CRV | 1.9797% |
13 | XT.COM | CRV-USDT | $1.075 0.0002804 Eth | $18,721,280.00 17,193,746.200 CRV | 1.8320% |
14 | BTSE | CRV-USDT | $1.058 0.0002774 Eth | $17,431,288.00 16,474,987.850 CRV | 1.7554% |
15 | LBank | CRV-USDT | $1.071 0.0002805 Eth | $14,391,583.00 13,435,671.400 CRV | 1.4315% |
16 | DigiFinex | CRV-USDT | $1.078 0.0002811 Eth | $12,631,853.00 11,723,041.800 CRV | 1.2491% |
17 | Niza Global | CRV-USD | $1.078 0.0002823 Eth | $11,149,875.00 10,265,690.985 CRV | 1.0938% |
18 | Kraken | CRV-USD | $1.071 0.0002795 Eth | $11,000,575.00 10,271,312.046 CRV | 1.0944% |
19 | Hotcoin | CRV-USDT | $1.073 0.0002801 Eth | $10,094,198.00 9,405,175.800 CRV | 1.0021% |
20 | BYDFi | CRV-USDT | $1.076 0.0002816 Eth | $8,963,418.00 8,333,833.100 CRV | 0.8880% |
21 | KuCoin | CRV-USDT | $1.076 0.0002807 Eth | $8,937,742.00 8,306,304.881 CRV | 0.8850% |
22 | Currency.com | CRV-USD | $1.056 0.0002785 Eth | $7,310,250.00 6,925,536.000 CRV | 0.7379% |
23 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.064 0.0002791 Eth | $6,281,791.00 5,787,833.013 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.6167% |
24 | Binance | CRV-BTC | $1.073 0.0002800 Eth | $6,130,370.00 5,873,575.100 CRV | 0.6258% |
25 | Biconomy.com | CRV-USDT | $1.058 0.0002769 Eth | $5,990,265.00 5,492,842.500 CRV | 0.5853% |
26 | Coinstore | CRV-USDT | $1.079 0.0002825 Eth | $5,932,732.00 5,446,394.700 CRV | 0.5803% |
27 | Binance | CRV-USDC | $1.08 0.0002818 Eth | $5,674,997.00 5,160,155.600 CRV | 0.5498% |
28 | Dex-Trade | CRV-USDT | $1.059 0.0002776 Eth | $5,573,465.00 5,263,714.467 CRV | 0.5608% |
29 | Trubit | CRV-USDT | $1.066 0.0002798 Eth | $4,698,094.00 4,348,544.800 CRV | 0.4633% |
30 | Bitvavo | CRV-EUR | $1.055 0.0002777 Eth | $4,555,164.00 4,319,194.238 CRV | 0.4602% |
31 | BingX | CRV-USDT | $1.072 0.0002798 Eth | $4,284,664.00 3,926,927.380 CRV | 0.4184% |
32 | Binance | CRV-TRY | $1.076 0.0002807 Eth | $4,031,936.00 3,651,258.900 CRV | 0.3890% |
33 | PointPay | CRV-USDT | $1.071 0.0002805 Eth | $3,825,577.00 3,522,963.037 CRV | 0.3754% |
34 | Ourbit | CRV-USDT | $1.074 0.0002811 Eth | $3,693,394.00 3,396,524.760 CRV | 0.3619% |
35 | Phemex | CRV-USDT | $1.074 0.0002815 Eth | $3,568,986.00 3,324,560.900 CRV | 0.3542% |
36 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.067 0.0002800 Eth | $3,371,197.00 3,136,481.905 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3342% |
37 | Luno | CRV-MYR | $1.068 0.0002800 Eth | $3,150,050.00 2,950,335.880 CRV | 0.3144% |
38 | Bithumb | CRV-KRW | $1.074 0.0002803 Eth | $3,046,920.00 2,835,810.568 CRV | 0.3021% |
39 | FMCPAY | CRV-USDT | $1.064 0.0002792 Eth | $2,927,459.00 2,681,233.730 CRV | 0.2857% |
40 | Bitkub | CRV-THB | $1.071 0.0002808 Eth | $2,875,121.00 2,685,362.581 CRV | 0.2861% |
41 | CoinEx | CRV-USDT | $1.068 0.0002797 Eth | $2,637,202.00 2,413,505.391 CRV | 0.2572% |
42 | Coinbase Exchange | CRV-EUR | $1.073 0.0002814 Eth | $2,365,348.00 2,204,337.920 CRV | 0.2349% |
43 | BitMart | CRV-USDT | $1.067 0.0002795 Eth | $2,279,568.00 2,135,546.100 CRV | 0.2275% |
44 | Icrypex | CRV-USDT | $1.058 0.0002800 Eth | $1,906,681.00 1,802,284.118 CRV | 0.1920% |
45 | WhiteBIT | CRV-BTC | $1.071 0.0002806 Eth | $1,813,986.00 1,693,142.900 CRV | 0.1804% |
46 | OKX | CRV-USDC | $1.074 0.0002803 Eth | $1,605,604.00 1,462,407.320 CRV | 0.1558% |
47 | WEEX | CRV-USDT | $1.056 0.0002785 Eth | $1,503,053.00 1,423,956.429 CRV | 0.1517% |
48 | Kraken | CRV-EUR | $1.076 0.0002808 Eth | $1,453,530.00 1,350,843.781 CRV | 0.1439% |
49 | Upbit | CRV-BTC | $1.066 0.0002782 Eth | $1,322,597.00 1,240,503.569 CRV | 0.1322% |
50 | LATOKEN | CRV-BTC | $1.061 0.0002783 Eth | $1,186,156.00 1,117,602.421 CRV | 0.1191% |
51 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.045 0.0002741 Eth | $1,116,680.00 174,412.138 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0186% |
52 | P2B | CRV-USD | $1.052 0.0002770 Eth | $1,073,582.00 1,020,515.580 CRV | 0.1087% |
53 | WhiteBIT | CRV-TRY | $1.069 0.0002804 Eth | $952,290.00 891,152.000 CRV | 0.0950% |
54 | BitDelta | CRV-USDT | $1.066 0.0002796 Eth | $910,797.00 833,633.100 CRV | 0.0888% |
55 | Nonkyc.io | CRV-USDT | $1.054 0.0002785 Eth | $894,733.00 819,874.287 CRV | 0.0874% |
56 | Bitso | CRV-USD | $1.059 0.0002778 Eth | $857,096.00 809,352.519 CRV | 0.0862% |
57 | Gemini | CRV-USD | $1.074 0.0002802 Eth | $792,842.00 738,145.656 CRV | 0.0786% |
58 | BigONE | CRV-USDT | $1.073 0.0002800 Eth | $635,199.00 591,867.926 CRV | 0.0631% |
59 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.076 0.0002821 Eth | $555,432.00 515,655.287 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0549% |
60 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.07 0.0002806 Eth | $453,196.00 421,324.534 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0449% |
61 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.049 0.0002750 Eth | $447,911.00 413,271.411 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0440% |
62 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.062 0.0002787 Eth | $432,205.00 396,974.628 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0423% |
63 | WEEX | CRV-USDC | $1.057 0.0002785 Eth | $409,542.00 375,003.000 CRV | 0.0400% |
64 | Bitazza | CRV-USDT | $1.07 0.0002800 Eth | $407,565.00 371,970.600 CRV | 0.0396% |
65 | Coinbase Exchange | CRV-GBP | $1.069 0.0002801 Eth | $347,382.00 325,014.910 CRV | 0.0346% |
66 | Tokenize | CRV-USD | $1.06 0.0002780 Eth | $336,482.00 317,315.881 CRV | 0.0338% |
67 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.061 0.0002782 Eth | $311,867.00 126,242.049 0X4200000000000000000000000000000000000042 | 0.0135% |
68 | KickEX | CRV-USDT | $1.064 0.0002793 Eth | $234,886.00 220,699.054 CRV | 0.0235% |
69 | Coinbase Exchange | CRV-BTC | $1.075 0.0002818 Eth | $232,459.00 216,198.440 CRV | 0.0230% |
70 | Bitget | CRV-BTC | $1.073 0.0002800 Eth | $228,912.00 211,508.050 CRV | 0.0225% |
71 | LATOKEN | CRV-USDT | $1.071 0.0002804 Eth | $210,025.00 196,045.634 CRV | 0.0209% |
72 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.10 0.0002884 Eth | $202,896.00 180,289.208 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0192% |
73 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.071 0.0002808 Eth | $186,239.00 169,795.961 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0181% |
74 | Dex-Trade | CRV-BTC | $1.069 0.0002803 Eth | $157,277.00 147,070.330 CRV | 0.0157% |
75 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.10 0.0002885 Eth | $116,841.00 104,212.395 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0111% |
76 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.061 0.0002781 Eth | $103,565.00 93,987.120 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0100% |
77 | Globe | CRV-USDT | $1.078 0.0002823 Eth | $96,722.00 88,558.203 CRV | 0.0094% |
78 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.069 0.0002789 Eth | $85,320.00 78,521.487 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0084% |
79 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.073 0.0002813 Eth | $71,449.00 65,877.330 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0070% |
80 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.061 0.0002779 Eth | $38,809.00 36,001.728 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0038% |
81 | Nonkyc.io | CRV-BTC | $1.06 0.0002791 Eth | $34,293.00 32,937.888 CRV | 0.0035% |
82 | Gate.io | CRV-ETH | $1.071 0.0002804 Eth | $33,107.00 30,583.610 CRV | 0.0033% |
83 | Foxbit | CRV-BRL | $1.073 0.0002816 Eth | $25,590.00 23,900.031 CRV | 0.0025% |
84 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.057 0.0002772 Eth | $16,969.15 15,930.768 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0017% |
85 | HashKey Global | CRV-USDT | $1.077 0.0002821 Eth | $16,333.52 14,922.200 CRV | 0.0016% |
86 | Luno | CRV-XBT | $1.056 0.0002769 Eth | $13,051.60 12,359.200 CRV | 0.0013% |
87 | DeFi Swap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.10 0.0002878 Eth | $10,878.24 9,836.102 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0010% |
88 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.10 0.0002891 Eth | $8,552.72 7,691.640 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0008% |
89 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $1.068 0.0002794 Eth | $6,816.61 6,238.497 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0007% |
90 | Balancer V2 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $1.036 0.0002716 Eth | $6,033.25 6,322.801 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0007% |
91 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.067 0.0002800 Eth | $5,653.98 5,154.713 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0005% |
92 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $1.064 0.0002787 Eth | $3,300.64 2,979.057 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0003% |
93 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | $1.10 0.0002880 Eth | $2,304.97 2,117.904 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0002% |
94 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.058 0.0002771 Eth | $997.88 925.339 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
95 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.052 0.0002762 Eth | $942.49 851.778 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0001% |
96 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.063 0.0002787 Eth | $833.31 862.983 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0001% |
97 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.057 0.0002774 Eth | $460.32 406.964 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0000% |
98 | Swapr (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.065 0.0002789 Eth | $288.77 266.695 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0000% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.069 0.0002800 Eth | $268.73 249.004 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.068 0.0002788 Eth | $214.10 196.631 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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