Overview
Max Total Supply
2,200,577,186.731545757345243614 CRV
Holders
88,584 ( -0.002%)
Market
Price
$1.24 @ 0.000310 ETH (+10.75%)
Onchain Market Cap
$2,723,662,469.33
Circulating Supply Market Cap
$1,543,083,284.44
Other Info
Token Contract (WITH 18 Decimals)
Balance
100,261.658928046421235488 CRVValue
$124,094.22 ( ~31.0783 Eth) [0.0046%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.22 0.0003066 Eth | $296,438,148.00 243,575,475.400 CRV | 29.0415% |
2 | Websea | CRV-USDT | $1.22 0.0003056 Eth | $155,546,818.00 0.000 CRV | 0.0000% |
3 | Gate.io | CRV-USDT | $1.23 0.0003069 Eth | $82,282,291.00 67,936,395.618 CRV | 8.1001% |
4 | OKX | CRV-USDT | $1.23 0.0003071 Eth | $75,948,156.00 62,716,028.765 CRV | 7.4776% |
5 | Bitget | CRV-USDT | $1.23 0.0003070 Eth | $54,706,591.00 44,781,391.514 CRV | 5.3393% |
6 | Coinbase Exchange | CRV-USD | $1.22 0.0003066 Eth | $48,845,905.00 39,890,490.270 CRV | 4.7561% |
7 | Bitunix | CRV-USDT | $1.22 0.0003057 Eth | $41,170,019.00 33,738,018.400 CRV | 4.0226% |
8 | MEXC | CRV-USDT | $1.22 0.0003062 Eth | $41,141,077.00 33,633,500.029 CRV | 4.0101% |
9 | Bybit | CRV-USDT | $1.22 0.0003067 Eth | $38,686,053.00 32,086,553.450 CRV | 3.8257% |
10 | HTX | CRV-USDT | $1.23 0.0003072 Eth | $32,907,667.00 27,490,902.053 CRV | 3.2777% |
11 | XT.COM | CRV-USDT | $1.23 0.0003069 Eth | $23,530,992.00 19,349,301.700 CRV | 2.3070% |
12 | Slex | CRV-USDT | $1.22 0.0003063 Eth | $22,159,894.00 18,453,797.100 CRV | 2.2002% |
13 | BTSE | CRV-USDT | $1.22 0.0003057 Eth | $19,462,153.00 15,940,297.326 CRV | 1.9006% |
14 | DigiFinex | CRV-USDT | $1.23 0.0003070 Eth | $15,331,433.00 12,505,663.700 CRV | 1.4911% |
15 | Kraken | CRV-USD | $1.22 0.0003057 Eth | $11,944,182.00 9,782,294.677 CRV | 1.1663% |
16 | Niza Global | CRV-USD | $1.23 0.0003068 Eth | $11,786,900.00 9,782,228.253 CRV | 1.1663% |
17 | FameEX | CRV-USDT | $1.24 0.0003103 Eth | $11,785,984.00 9,692,068.365 CRV | 1.1556% |
18 | BYDFi | CRV-USDT | $1.22 0.0003055 Eth | $11,544,377.00 9,457,287.400 CRV | 1.1276% |
19 | KuCoin | CRV-USDT | $1.22 0.0003064 Eth | $11,423,573.00 9,333,956.768 CRV | 1.1129% |
20 | Dex-Trade | CRV-USDT | $1.23 0.0003070 Eth | $9,793,453.00 7,986,982.848 CRV | 0.9523% |
21 | Binance | CRV-TRY | $1.25 0.0003119 Eth | $8,799,889.00 7,149,201.100 CRV | 0.8524% |
22 | Currency.com | CRV-USD | $1.24 0.0003116 Eth | $8,156,048.00 6,556,572.000 CRV | 0.7817% |
23 | Biconomy.com | CRV-USDT | $1.23 0.0003088 Eth | $7,735,305.00 6,384,280.200 CRV | 0.7612% |
24 | LBank | CRV-USDT | $1.22 0.0003056 Eth | $7,677,688.00 6,291,938.890 CRV | 0.7502% |
25 | Binance | CRV-USDC | $1.24 0.0003091 Eth | $7,508,580.00 6,177,520.100 CRV | 0.7365% |
26 | Coinstore | CRV-USDT | $1.25 0.0003124 Eth | $7,121,598.00 5,864,276.100 CRV | 0.6992% |
27 | Binance | CRV-BTC | $1.22 0.0003063 Eth | $6,582,368.00 5,421,662.200 CRV | 0.6464% |
28 | Luno | CRV-MYR | $1.24 0.0003119 Eth | $6,497,542.00 5,220,405.840 CRV | 0.6224% |
29 | Bitkub | CRV-THB | $1.22 0.0003062 Eth | $6,392,270.00 5,228,331.289 CRV | 0.6234% |
30 | Toobit | CRV-USDT | $1.24 0.0003116 Eth | $5,841,086.00 4,804,855.300 CRV | 0.5729% |
31 | Bitvavo | CRV-EUR | $1.22 0.0003066 Eth | $5,217,285.00 4,259,465.781 CRV | 0.5079% |
32 | BingX | CRV-USDT | $1.23 0.0003067 Eth | $5,087,393.00 4,171,630.682 CRV | 0.4974% |
33 | PointPay | CRV-USDT | $1.23 0.0003070 Eth | $4,807,097.00 3,933,052.925 CRV | 0.4689% |
34 | Bithumb | CRV-KRW | $1.20 0.0003004 Eth | $4,626,691.00 3,856,252.204 CRV | 0.4598% |
35 | CoinEx | CRV-USDT | $1.23 0.0003073 Eth | $4,535,365.00 3,747,895.218 CRV | 0.4469% |
36 | Ourbit | CRV-USDT | $1.22 0.0003062 Eth | $4,502,725.00 3,706,237.150 CRV | 0.4419% |
37 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $1.25 0.0003121 Eth | $4,296,265.00 3,267,556.443 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3896% |
38 | Bullish | CRV-USDC | $1.22 0.0003054 Eth | $4,235,905.00 3,543,283.991 CRV | 0.4225% |
39 | WhiteBIT | CRV-BTC | $1.22 0.0003057 Eth | $4,086,516.00 3,346,981.300 CRV | 0.3991% |
40 | Phemex | CRV-USDT | $1.22 0.0003059 Eth | $3,449,313.00 2,822,706.630 CRV | 0.3366% |
41 | FMCPAY | CRV-USDT | $1.22 0.0003059 Eth | $3,381,513.00 2,802,782.570 CRV | 0.3342% |
42 | BitMart | CRV-USDT | $1.23 0.0003072 Eth | $3,164,086.00 2,579,013.560 CRV | 0.3075% |
43 | Icrypex | CRV-USDT | $1.22 0.0003061 Eth | $3,113,693.00 2,545,934.325 CRV | 0.3036% |
44 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.23 0.0003071 Eth | $2,878,778.00 2,343,682.801 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.2794% |
45 | Kraken | CRV-EUR | $1.22 0.0003058 Eth | $2,496,434.00 2,043,770.719 CRV | 0.2437% |
46 | Trubit | CRV-USDT | $1.24 0.0003107 Eth | $2,256,320.00 1,868,036.900 CRV | 0.2227% |
47 | Coinbase Exchange | CRV-EUR | $1.22 0.0003059 Eth | $2,218,598.00 1,815,684.580 CRV | 0.2165% |
48 | P2B | CRV-USD | $1.24 0.0003109 Eth | $2,092,723.00 1,684,962.450 CRV | 0.2009% |
49 | Hotcoin | CRV-USDT | $1.22 0.0003061 Eth | $2,047,950.00 1,674,506.900 CRV | 0.1997% |
50 | WEEX | CRV-USDT | $1.22 0.0003063 Eth | $1,503,552.00 1,229,196.943 CRV | 0.1466% |
51 | OKX | CRV-USDC | $1.22 0.0003065 Eth | $1,433,288.00 1,178,326.886 CRV | 0.1405% |
52 | WhiteBIT | CRV-TRY | $1.23 0.0003075 Eth | $1,427,111.00 1,162,155.100 CRV | 0.1386% |
53 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.23 0.0003075 Eth | $1,423,831.00 1,407,674.993 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1678% |
54 | LATOKEN | CRV-BTC | $1.22 0.0003063 Eth | $1,382,844.00 1,130,709.753 CRV | 0.1348% |
55 | Upbit | CRV-BTC | $1.21 0.0003040 Eth | $1,381,008.00 1,137,320.488 CRV | 0.1356% |
56 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.24 0.0003108 Eth | $1,216,917.00 166,007.071 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0198% |
57 | Gemini | CRV-USD | $1.22 0.0003065 Eth | $1,120,192.00 915,040.225 CRV | 0.1091% |
58 | BitDelta | CRV-USDT | $1.25 0.0003119 Eth | $961,507.00 806,515.700 CRV | 0.0962% |
59 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.22 0.0003066 Eth | $849,147.00 694,455.407 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0828% |
60 | Nonkyc.io | CRV-USDT | $1.23 0.0003074 Eth | $742,302.00 620,112.104 CRV | 0.0739% |
61 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.22 0.0003059 Eth | $657,908.00 539,465.591 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0643% |
62 | Curve (Optimism) | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.23 0.0003081 Eth | $480,989.00 472,858.089 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0564% |
63 | Bitazza | CRV-USDT | $1.24 0.0003092 Eth | $457,554.00 377,727.600 CRV | 0.0450% |
64 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.24 0.0003104 Eth | $404,789.00 148,771.216 0X4200000000000000000000000000000000000042 | 0.0177% |
65 | Coinbase Exchange | CRV-BTC | $1.22 0.0003058 Eth | $404,701.00 331,389.440 CRV | 0.0395% |
66 | Coinbase Exchange | CRV-GBP | $1.22 0.0003066 Eth | $350,961.00 286,696.240 CRV | 0.0342% |
67 | Bitget | CRV-BTC | $1.22 0.0003065 Eth | $329,192.00 266,465.349 CRV | 0.0318% |
68 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.22 0.0003065 Eth | $322,793.00 268,845.374 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0321% |
69 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.25 0.0003124 Eth | $320,546.00 317,027.820 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0378% |
70 | KickEX | CRV-USDT | $1.22 0.0003060 Eth | $280,649.00 229,532.232 CRV | 0.0274% |
71 | LATOKEN | CRV-USDT | $1.22 0.0003062 Eth | $273,152.00 223,391.073 CRV | 0.0266% |
72 | BigONE | CRV-USDT | $1.24 0.0003096 Eth | $244,275.00 197,656.951 CRV | 0.0236% |
73 | Dex-Trade | CRV-BTC | $1.25 0.0003123 Eth | $225,620.00 181,016.581 CRV | 0.0216% |
74 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.23 0.0003081 Eth | $208,644.00 172,562.391 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0206% |
75 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.23 0.0003083 Eth | $183,045.00 141,380.262 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0169% |
76 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $1.23 0.0003073 Eth | $159,672.00 123,409.991 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0147% |
77 | Bitstamp | CRV-USD | $1.24 0.0003101 Eth | $151,284.00 122,162.861 CRV | 0.0146% |
78 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.24 0.0003113 Eth | $133,902.00 108,729.837 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0130% |
79 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.24 0.0003111 Eth | $130,826.00 106,329.209 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0127% |
80 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.23 0.0003081 Eth | $106,395.00 87,368.237 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0104% |
81 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.23 0.0003087 Eth | $82,631.00 67,112.106 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0080% |
82 | Globe | CRV-USDT | $1.23 0.0003069 Eth | $63,552.00 51,796.761 CRV | 0.0062% |
83 | Foxbit | CRV-BRL | $1.25 0.0003120 Eth | $32,119.00 25,978.580 CRV | 0.0031% |
84 | Nonkyc.io | CRV-BTC | $1.25 0.0003128 Eth | $31,809.00 26,416.401 CRV | 0.0031% |
85 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.23 0.0003067 Eth | $31,173.00 25,776.997 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0031% |
86 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.24 0.0003094 Eth | $23,365.00 18,853.592 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0022% |
87 | Gate.io | CRV-BTC | $1.23 0.0003085 Eth | $21,345.00 17,893.581 CRV | 0.0021% |
88 | Korbit | CRV-KRW | $1.21 0.0003032 Eth | $17,996.91 15,374.268 CRV | 0.0018% |
89 | DeFi Swap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.23 0.0003074 Eth | $16,649.26 13,670.887 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0016% |
90 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.23 0.0003072 Eth | $15,843.71 12,771.076 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0015% |
91 | Gate.io | CRV-TRY | $1.23 0.0003072 Eth | $15,668.65 12,507.531 CRV | 0.0015% |
92 | Luno | CRV-XBT | $1.25 0.0003133 Eth | $14,154.92 11,315.000 CRV | 0.0013% |
93 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.28 0.0003198 Eth | $12,178.41 9,640.499 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0011% |
94 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.23 0.0003088 Eth | $4,982.51 4,119.577 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0005% |
95 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.23 0.0003082 Eth | $4,834.91 3,892.920 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0005% |
96 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.25 0.0003119 Eth | $1,305.55 1,069.148 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
97 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.25 0.0003129 Eth | $520.13 431.348 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0001% |
98 | Swapr (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.25 0.0003125 Eth | $466.60 378.532 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0000% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.25 0.0003138 Eth | $407.70 333.043 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.25 0.0003131 Eth | $303.89 247.129 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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