Overview
Max Total Supply
2,200,555,601.056824992252035254 CRV
Holders
88,600 ( 0.026%)
Market
Price
$1.26 @ 0.000315 ETH (+13.05%)
Onchain Market Cap
$2,766,368,624.46
Circulating Supply Market Cap
$1,567,213,994.42
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.25 0.0003134 Eth | $292,219,652.00 241,343,238.600 CRV | 27.1305% |
2 | Websea | CRV-USDT | $1.25 0.0003136 Eth | $155,755,404.00 0.000 CRV | 0.0000% |
3 | WhiteBIT | CRV-USDT | $1.25 0.0003128 Eth | $114,808,041.00 91,920,609.656 CRV | 10.3332% |
4 | Gate.io | CRV-USDT | $1.25 0.0003135 Eth | $82,168,500.00 68,434,228.841 CRV | 7.6930% |
5 | OKX | CRV-USDT | $1.25 0.0003135 Eth | $75,489,772.00 62,717,584.036 CRV | 7.0504% |
6 | Bitget | CRV-USDT | $1.25 0.0003136 Eth | $55,608,125.00 45,832,394.211 CRV | 5.1522% |
7 | Coinbase Exchange | CRV-USD | $1.25 0.0003132 Eth | $51,303,785.00 41,006,941.900 CRV | 4.6098% |
8 | MEXC | CRV-USDT | $1.26 0.0003145 Eth | $42,804,829.00 34,076,762.642 CRV | 3.8307% |
9 | Bitunix | CRV-USDT | $1.25 0.0003135 Eth | $42,003,669.00 33,529,843.700 CRV | 3.7692% |
10 | Bybit | CRV-USDT | $1.25 0.0003141 Eth | $37,945,028.00 31,662,214.810 CRV | 3.5593% |
11 | HTX | CRV-USDT | $1.25 0.0003135 Eth | $33,411,693.00 28,175,397.950 CRV | 3.1673% |
12 | XT.COM | CRV-USDT | $1.27 0.0003175 Eth | $23,129,700.00 19,130,946.100 CRV | 2.1506% |
13 | Slex | CRV-USDT | $1.25 0.0003135 Eth | $21,807,292.00 18,330,023.200 CRV | 2.0606% |
14 | BTSE | CRV-USDT | $1.26 0.0003147 Eth | $19,548,096.00 15,548,795.776 CRV | 1.7479% |
15 | DigiFinex | CRV-USDT | $1.25 0.0003134 Eth | $15,550,119.00 12,422,382.500 CRV | 1.3965% |
16 | Kraken | CRV-USD | $1.25 0.0003134 Eth | $11,783,708.00 9,411,907.694 CRV | 1.0580% |
17 | BYDFi | CRV-USDT | $1.26 0.0003143 Eth | $11,757,877.00 9,365,607.600 CRV | 1.0528% |
18 | KuCoin | CRV-USDT | $1.25 0.0003133 Eth | $11,553,790.00 9,232,926.283 CRV | 1.0379% |
19 | Dex-Trade | CRV-USDT | $1.28 0.0003199 Eth | $9,895,175.00 7,741,890.948 CRV | 0.8703% |
20 | Binance | CRV-TRY | $1.26 0.0003145 Eth | $8,695,287.00 7,078,278.200 CRV | 0.7957% |
21 | LBank | CRV-USDT | $1.27 0.0003185 Eth | $8,112,876.00 6,377,655.880 CRV | 0.7169% |
22 | Biconomy.com | CRV-USDT | $1.27 0.0003174 Eth | $7,638,593.00 6,348,219.000 CRV | 0.7136% |
23 | Binance | CRV-USDC | $1.25 0.0003137 Eth | $7,273,029.00 5,997,461.800 CRV | 0.6742% |
24 | Coinstore | CRV-USDT | $1.26 0.0003143 Eth | $7,047,039.00 5,830,101.000 CRV | 0.6554% |
25 | Binance | CRV-BTC | $1.25 0.0003142 Eth | $6,574,133.00 5,416,063.700 CRV | 0.6088% |
26 | Bitkub | CRV-THB | $1.25 0.0003137 Eth | $6,504,780.00 5,191,927.856 CRV | 0.5836% |
27 | Luno | CRV-MYR | $1.25 0.0003136 Eth | $6,380,849.00 5,091,936.660 CRV | 0.5724% |
28 | Bitvavo | CRV-EUR | $1.26 0.0003139 Eth | $5,355,500.00 4,267,300.429 CRV | 0.4797% |
29 | BingX | CRV-USDT | $1.25 0.0003137 Eth | $5,026,339.00 4,143,912.512 CRV | 0.4658% |
30 | Bithumb | CRV-KRW | $1.23 0.0003072 Eth | $4,563,210.00 3,718,533.168 CRV | 0.4180% |
31 | PointPay | CRV-USDT | $1.25 0.0003136 Eth | $4,535,665.00 3,717,755.011 CRV | 0.4179% |
32 | Ourbit | CRV-USDT | $1.26 0.0003143 Eth | $4,439,218.00 3,674,514.460 CRV | 0.4131% |
33 | CoinEx | CRV-USDT | $1.25 0.0003137 Eth | $4,376,806.00 3,625,768.076 CRV | 0.4076% |
34 | WhiteBIT | CRV-BTC | $1.26 0.0003146 Eth | $4,110,837.00 3,271,423.300 CRV | 0.3678% |
35 | Phemex | CRV-USDT | $1.25 0.0003136 Eth | $3,577,173.00 2,856,235.640 CRV | 0.3211% |
36 | BitMart | CRV-USDT | $1.25 0.0003141 Eth | $3,222,846.00 2,568,927.580 CRV | 0.2888% |
37 | Icrypex | CRV-USDT | $1.24 0.0003116 Eth | $3,073,923.00 2,469,077.358 CRV | 0.2776% |
38 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.23 0.0003074 Eth | $2,984,147.00 741.946 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0001% |
39 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.25 0.0003140 Eth | $2,855,071.00 2,338,438.006 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.2629% |
40 | Kraken | CRV-EUR | $1.25 0.0003132 Eth | $2,547,796.00 2,036,451.193 CRV | 0.2289% |
41 | Coinbase Exchange | CRV-EUR | $1.26 0.0003146 Eth | $2,284,812.00 1,817,491.300 CRV | 0.2043% |
42 | Hotcoin | CRV-USDT | $1.26 0.0003142 Eth | $2,223,287.00 1,771,214.000 CRV | 0.1991% |
43 | Trubit | CRV-USDT | $1.26 0.0003143 Eth | $2,211,447.00 1,843,360.700 CRV | 0.2072% |
44 | P2B | CRV-USD | $1.25 0.0003138 Eth | $2,112,200.00 1,685,714.430 CRV | 0.1895% |
45 | WEEX | CRV-USDT | $1.27 0.0003178 Eth | $1,502,726.00 1,183,490.697 CRV | 0.1330% |
46 | WhiteBIT | CRV-TRY | $1.26 0.0003151 Eth | $1,438,724.00 1,141,900.500 CRV | 0.1284% |
47 | Upbit | CRV-BTC | $1.25 0.0003130 Eth | $1,438,315.00 1,150,632.491 CRV | 0.1293% |
48 | OKX | CRV-USDC | $1.26 0.0003149 Eth | $1,424,346.00 1,177,777.294 CRV | 0.1324% |
49 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.23 0.0003074 Eth | $1,393,865.00 1,374,888.272 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1546% |
50 | LATOKEN | CRV-BTC | $1.28 0.0003200 Eth | $1,381,255.00 1,080,461.920 CRV | 0.1215% |
51 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.24 0.0003110 Eth | $1,188,831.00 161,942.480 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0182% |
52 | Gemini | CRV-USD | $1.25 0.0003134 Eth | $1,079,219.00 862,202.953 CRV | 0.0969% |
53 | BitDelta | CRV-USDT | $1.25 0.0003142 Eth | $979,156.00 830,089.700 CRV | 0.0933% |
54 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.26 0.0003148 Eth | $850,212.00 704,419.839 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0792% |
55 | Nonkyc.io | CRV-USDT | $1.26 0.0003141 Eth | $731,747.00 614,953.132 CRV | 0.0691% |
56 | Bitso | CRV-USD | $1.24 0.0003113 Eth | $726,920.00 584,397.504 CRV | 0.0657% |
57 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.26 0.0003152 Eth | $657,462.00 542,960.876 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0610% |
58 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $1.25 0.0003135 Eth | $610,149.00 500,131.511 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0562% |
59 | Curve (Optimism) | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.25 0.0003125 Eth | $494,885.00 473,323.166 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0532% |
60 | Bitazza | CRV-USDT | $1.26 0.0003157 Eth | $470,733.00 392,120.400 CRV | 0.0441% |
61 | WEEX | CRV-USDC | $1.25 0.0003137 Eth | $445,607.00 375,157.000 CRV | 0.0422% |
62 | Coinbase Exchange | CRV-BTC | $1.25 0.0003140 Eth | $418,026.00 333,326.970 CRV | 0.0375% |
63 | Coinbase Exchange | CRV-GBP | $1.25 0.0003129 Eth | $384,870.00 307,982.720 CRV | 0.0346% |
64 | Bitget | CRV-BTC | $1.25 0.0003127 Eth | $331,574.00 268,375.006 CRV | 0.0302% |
65 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.24 0.0003113 Eth | $322,254.00 269,277.062 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0303% |
66 | KickEX | CRV-USDT | $1.25 0.0003138 Eth | $284,850.00 227,173.443 CRV | 0.0255% |
67 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.25 0.0003134 Eth | $281,704.00 276,115.361 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0310% |
68 | LATOKEN | CRV-USDT | $1.27 0.0003184 Eth | $265,335.00 208,641.192 CRV | 0.0235% |
69 | BigONE | CRV-USDT | $1.26 0.0003145 Eth | $249,205.00 198,302.470 CRV | 0.0223% |
70 | Dex-Trade | CRV-BTC | $1.25 0.0003140 Eth | $223,873.00 178,409.581 CRV | 0.0201% |
71 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.25 0.0003116 Eth | $208,488.00 173,752.290 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0195% |
72 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.26 0.0003151 Eth | $170,846.00 132,597.335 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0149% |
73 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $1.25 0.0003137 Eth | $155,575.00 119,835.979 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0135% |
74 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.25 0.0003138 Eth | $135,637.00 110,685.546 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0124% |
75 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.25 0.0003116 Eth | $131,326.00 107,198.718 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0121% |
76 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.26 0.0003149 Eth | $95,850.00 79,110.304 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0089% |
77 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.26 0.0003153 Eth | $82,747.00 67,541.495 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0076% |
78 | Bitlo | CRV-TRY | $1.26 0.0003149 Eth | $64,242.00 51,709.075 CRV | 0.0058% |
79 | Globe | CRV-USDT | $1.25 0.0003141 Eth | $58,808.00 48,843.304 CRV | 0.0055% |
80 | Luno | CRV-ZAR | $1.26 0.0003162 Eth | $51,553.00 40,801.980 CRV | 0.0046% |
81 | Nonkyc.io | CRV-BTC | $1.25 0.0003135 Eth | $32,093.00 26,782.350 CRV | 0.0030% |
82 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.26 0.0003145 Eth | $30,689.00 25,489.134 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0029% |
83 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.26 0.0003163 Eth | $23,043.00 18,726.085 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0021% |
84 | Gate.io | CRV-BTC | $1.25 0.0003122 Eth | $20,034.00 16,819.210 CRV | 0.0019% |
85 | Korbit | CRV-KRW | $1.22 0.0003065 Eth | $17,230.15 14,863.951 CRV | 0.0017% |
86 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.27 0.0003186 Eth | $16,287.56 12,759.298 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0014% |
87 | DeFi Swap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.23 0.0003072 Eth | $15,160.94 12,801.159 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0014% |
88 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.25 0.0003120 Eth | $13,065.31 10,492.516 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0012% |
89 | Luno | CRV-XBT | $1.24 0.0003115 Eth | $12,279.46 9,869.600 CRV | 0.0011% |
90 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.28 0.0003198 Eth | $12,178.41 9,640.499 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0011% |
91 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $1.26 0.0003160 Eth | $11,281.07 12,985.292 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0015% |
92 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.25 0.0003126 Eth | $7,412.72 6,084.212 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0007% |
93 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $1.23 0.0003074 Eth | $4,881.09 3,725.433 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0004% |
94 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.25 0.0003120 Eth | $4,788.17 3,854.468 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0004% |
95 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.24 0.0003114 Eth | $4,760.45 3,942.450 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0004% |
96 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.25 0.0003133 Eth | $1,280.50 1,050.346 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
97 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.26 0.0003142 Eth | $1,116.73 1,083.953 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0001% |
98 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.28 0.0003216 Eth | $504.05 420.651 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0000% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.27 0.0003170 Eth | $402.74 328.840 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.26 0.0003147 Eth | $296.99 242.104 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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