Overview
Max Total Supply
2,201,517,551.460831031370179584 CRV
Holders
88,618 ( -0.111%)
Market
Price
$1.22 @ 0.000306 ETH (+4.16%)
Onchain Market Cap
$2,695,699,299.32
Circulating Supply Market Cap
$1,530,048,601.63
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Websea | CRV-USDT | $1.22 0.0003044 Eth | $59,198,194.00 0.000 CRV | 0.0000% |
2 | Gate.io | CRV-USDT | $1.22 0.0003050 Eth | $34,340,357.00 28,854,484.850 CRV | 10.7748% |
3 | OKX | CRV-USDT | $1.22 0.0003031 Eth | $32,405,052.00 27,169,374.654 CRV | 10.1456% |
4 | Slex | CRV-USDT | $1.21 0.0003022 Eth | $22,937,323.00 19,303,289.400 CRV | 7.2082% |
5 | Bitget | CRV-USDT | $1.22 0.0003041 Eth | $21,231,942.00 17,659,584.723 CRV | 6.5944% |
6 | Bybit | CRV-USDT | $1.22 0.0003049 Eth | $17,076,168.00 14,344,253.510 CRV | 5.3564% |
7 | Bitunix | CRV-USDT | $1.22 0.0003040 Eth | $16,547,138.00 13,575,798.900 CRV | 5.0695% |
8 | MEXC | CRV-USDT | $1.22 0.0003052 Eth | $16,512,376.00 13,501,067.222 CRV | 5.0416% |
9 | Coinbase Exchange | CRV-USD | $1.22 0.0003051 Eth | $14,783,947.00 12,093,207.810 CRV | 4.5158% |
10 | BTSE | CRV-USDT | $1.22 0.0003047 Eth | $12,828,558.00 10,506,649.391 CRV | 3.9234% |
11 | XT.COM | CRV-USDT | $1.23 0.0003054 Eth | $9,295,160.00 7,794,080.100 CRV | 2.9105% |
12 | HTX | CRV-USDT | $1.22 0.0003039 Eth | $9,216,708.00 7,710,761.289 CRV | 2.8793% |
13 | DigiFinex | CRV-USDT | $1.21 0.0003029 Eth | $6,399,055.00 5,271,614.700 CRV | 1.9685% |
14 | LBank | CRV-USDT | $1.21 0.0003031 Eth | $5,245,042.00 4,321,652.350 CRV | 1.6138% |
15 | CoinW | CRV-USDT | $1.22 0.0003052 Eth | $4,776,488.00 3,903,697.884 CRV | 1.4577% |
16 | BYDFi | CRV-USDT | $1.22 0.0003050 Eth | $4,624,125.00 3,784,384.000 CRV | 1.4132% |
17 | FameEX | CRV-USDT | $1.21 0.0003028 Eth | $4,563,386.00 3,827,739.505 CRV | 1.4294% |
18 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.22 0.0003040 Eth | $4,185,702.00 3,471,629.129 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 1.2964% |
19 | Dex-Trade | CRV-USDT | $1.22 0.0003043 Eth | $3,983,479.00 3,268,717.900 CRV | 1.2206% |
20 | KuCoin | CRV-USDT | $1.22 0.0003043 Eth | $3,931,426.00 3,222,292.504 CRV | 1.2033% |
21 | Biconomy.com | CRV-USDT | $1.22 0.0003049 Eth | $3,765,692.00 3,159,408.300 CRV | 1.1798% |
22 | Bitvavo | CRV-EUR | $1.22 0.0003052 Eth | $3,678,959.00 3,008,991.205 CRV | 1.1236% |
23 | Kraken | CRV-USD | $1.22 0.0003044 Eth | $3,573,554.00 2,929,142.986 CRV | 1.0938% |
24 | Trubit | CRV-USDT | $1.22 0.0003056 Eth | $3,453,547.00 2,899,040.800 CRV | 1.0826% |
25 | Phemex | CRV-USDT | $1.22 0.0003048 Eth | $3,310,276.00 2,710,909.330 CRV | 1.0123% |
26 | Coinstore | CRV-USDT | $1.21 0.0003019 Eth | $3,158,939.00 2,645,920.500 CRV | 0.9880% |
27 | FMCPAY | CRV-USDT | $1.21 0.0003030 Eth | $2,989,933.00 2,512,927.180 CRV | 0.9384% |
28 | FMFW.io | CRV-USDT | $1.22 0.0003031 Eth | $2,883,674.00 2,371,761.100 CRV | 0.8857% |
29 | Bullish | CRV-USDC | $1.22 0.0003039 Eth | $2,877,528.00 2,419,634.812 CRV | 0.9035% |
30 | Bitrue | CRV-USDT | $1.22 0.0003037 Eth | $2,832,412.00 2,326,950.780 CRV | 0.8689% |
31 | HitBTC | CRV-USDT | $1.22 0.0003055 Eth | $2,827,492.00 2,372,653.800 CRV | 0.8860% |
32 | Bitkub | CRV-THB | $1.23 0.0003071 Eth | $2,562,975.00 2,083,144.405 CRV | 0.7779% |
33 | BingX | CRV-USDT | $1.22 0.0003039 Eth | $2,368,965.00 1,993,576.327 CRV | 0.7444% |
34 | Binance | CRV-TRY | $1.22 0.0003042 Eth | $2,343,832.00 1,952,460.800 CRV | 0.7291% |
35 | Toobit | CRV-USDT | $1.22 0.0003049 Eth | $2,307,840.00 1,934,873.200 CRV | 0.7225% |
36 | Binance | CRV-BTC | $1.22 0.0003032 Eth | $2,216,953.00 1,855,606.300 CRV | 0.6929% |
37 | Luno | CRV-MYR | $1.22 0.0003049 Eth | $2,051,076.00 1,679,356.810 CRV | 0.6271% |
38 | Ourbit | CRV-USDT | $1.22 0.0003057 Eth | $1,899,373.00 1,592,381.650 CRV | 0.5946% |
39 | PointPay | CRV-USDT | $1.22 0.0003049 Eth | $1,837,181.00 1,539,573.449 CRV | 0.5749% |
40 | CoinEx | CRV-USDT | $1.22 0.0003055 Eth | $1,747,541.00 1,470,387.950 CRV | 0.5491% |
41 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.22 0.0003043 Eth | $1,726,102.00 1,441,065.390 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.5381% |
42 | Binance | CRV-USDC | $1.22 0.0003050 Eth | $1,592,072.00 1,344,828.500 CRV | 0.5022% |
43 | WEEX | CRV-USDT | $1.21 0.0003037 Eth | $1,504,708.00 1,238,991.675 CRV | 0.4627% |
44 | Bithumb | CRV-KRW | $1.19 0.0002977 Eth | $1,346,502.00 1,128,287.138 CRV | 0.4213% |
45 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.20 0.0003004 Eth | $1,283,826.00 1,249,683.525 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.4667% |
46 | BitMart | CRV-USDT | $1.23 0.0003060 Eth | $1,187,801.00 969,101.420 CRV | 0.3619% |
47 | Currency.com | CRV-USD | $1.23 0.0003060 Eth | $1,150,701.00 939,156.000 CRV | 0.3507% |
48 | WhiteBIT | CRV-BTC | $1.23 0.0003058 Eth | $1,132,249.00 923,771.900 CRV | 0.3450% |
49 | P2B | CRV-USD | $1.22 0.0003046 Eth | $918,188.00 752,612.920 CRV | 0.2810% |
50 | OKX | CRV-USDC | $1.22 0.0003042 Eth | $815,683.00 684,737.752 CRV | 0.2557% |
51 | Hotcoin | CRV-USDT | $1.22 0.0003044 Eth | $671,414.00 550,125.000 CRV | 0.2054% |
52 | BitDelta | CRV-USDT | $1.21 0.0003016 Eth | $669,865.00 563,045.200 CRV | 0.2103% |
53 | Kraken | CRV-EUR | $1.22 0.0003051 Eth | $555,835.00 454,631.562 CRV | 0.1698% |
54 | Nonkyc.io | CRV-USDT | $1.22 0.0003053 Eth | $552,750.00 465,085.716 CRV | 0.1737% |
55 | Bitso | CRV-USD | $1.22 0.0003054 Eth | $480,986.00 393,132.768 CRV | 0.1468% |
56 | WhiteBIT | CRV-TRY | $1.22 0.0003054 Eth | $476,583.00 389,419.200 CRV | 0.1454% |
57 | Bitazza | CRV-USDT | $1.22 0.0003050 Eth | $440,498.00 369,561.800 CRV | 0.1380% |
58 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.22 0.0003051 Eth | $437,404.00 368,853.447 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.1377% |
59 | LATOKEN | CRV-BTC | $1.22 0.0003055 Eth | $436,497.00 356,896.015 CRV | 0.1333% |
60 | Coinbase Exchange | CRV-EUR | $1.22 0.0003047 Eth | $404,387.00 331,288.520 CRV | 0.1237% |
61 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.22 0.0003052 Eth | $402,700.00 394,963.937 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.1475% |
62 | BloFin | CRV-USDT | $1.22 0.0003052 Eth | $389,694.00 327,868.800 CRV | 0.1224% |
63 | Gemini | CRV-USD | $1.22 0.0003033 Eth | $362,583.00 298,226.224 CRV | 0.1114% |
64 | AscendEX (BitMax) | CRV-USDT | $1.22 0.0003037 Eth | $362,272.00 297,598.200 CRV | 0.1111% |
65 | WEEX | CRV-USDC | $1.21 0.0003023 Eth | $348,560.00 292,732.000 CRV | 0.1093% |
66 | Upbit | CRV-BTC | $1.22 0.0003054 Eth | $325,246.00 265,683.307 CRV | 0.0992% |
67 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.20 0.0003005 Eth | $315,286.00 46,043.234 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0172% |
68 | Pionex | CRV-USDT | $1.22 0.0003049 Eth | $311,148.00 260,657.202 CRV | 0.0973% |
69 | Curve (Optimism) | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.23 0.0003061 Eth | $256,512.00 250,331.720 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0935% |
70 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.23 0.0003064 Eth | $240,075.00 198,747.729 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0742% |
71 | Coinbase Exchange | CRV-GBP | $1.22 0.0003046 Eth | $235,637.00 193,093.410 CRV | 0.0721% |
72 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.23 0.0003058 Eth | $202,014.00 74,118.222 0X4200000000000000000000000000000000000042 | 0.0277% |
73 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.22 0.0003043 Eth | $170,600.00 142,585.972 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0532% |
74 | Binance US | CRV-USDT | $1.22 0.0003054 Eth | $114,875.00 93,883.063 CRV | 0.0351% |
75 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.23 0.0003062 Eth | $112,689.00 94,226.168 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0352% |
76 | LATOKEN | CRV-USDT | $1.21 0.0003023 Eth | $112,592.00 92,884.714 CRV | 0.0347% |
77 | BigONE | CRV-USDT | $1.22 0.0003050 Eth | $108,289.00 88,632.831 CRV | 0.0331% |
78 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.22 0.0003054 Eth | $103,853.00 86,391.744 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0323% |
79 | TokoCrypto | CRV-USDT | $1.22 0.0003054 Eth | $78,411.00 64,048.224 CRV | 0.0239% |
80 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.21 0.0003013 Eth | $48,838.00 40,653.937 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0152% |
81 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.21 0.0003018 Eth | $48,393.00 40,263.765 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0150% |
82 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.22 0.0003055 Eth | $40,139.00 33,524.503 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0125% |
83 | Luno | CRV-ZAR | $1.23 0.0003062 Eth | $28,852.00 23,509.450 CRV | 0.0088% |
84 | Nonkyc.io | CRV-BTC | $1.22 0.0003052 Eth | $26,938.00 22,568.450 CRV | 0.0084% |
85 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.21 0.0003016 Eth | $26,581.00 22,278.944 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0083% |
86 | Globe | CRV-USDT | $1.23 0.0003062 Eth | $23,103.00 19,411.611 CRV | 0.0072% |
87 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.23 0.0003060 Eth | $22,907.00 18,962.027 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0071% |
88 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.22 0.0003043 Eth | $16,947.35 14,182.740 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0053% |
89 | HashKey Global | CRV-USDT | $1.22 0.0003051 Eth | $15,117.76 12,700.800 CRV | 0.0047% |
90 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.22 0.0003055 Eth | $14,275.01 11,980.006 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0045% |
91 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.22 0.0003050 Eth | $6,668.09 5,507.588 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0021% |
92 | Luno | CRV-XBT | $1.21 0.0003027 Eth | $6,510.87 5,364.600 CRV | 0.0020% |
93 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.22 0.0003034 Eth | $2,445.83 2,031.816 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0008% |
94 | Uniswap V3 (Polygon) | 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A-0X172370D5CD63279EFA6D502DAB29171933A610AF | $1.21 0.0003033 Eth | $1,472.72 611.186 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A | 0.0002% |
95 | Uniswap V3 (Ethereum) | 0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.20 0.0003000 Eth | $751.18 1,087.370 0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | 0.0004% |
96 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.22 0.0003036 Eth | $393.33 326.815 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
97 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.19 0.0002980 Eth | $167.65 140.088 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0001% |
98 | Swapr (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.21 0.0003019 Eth | $146.06 121.072 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0000% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.22 0.0003033 Eth | $112.04 93.008 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.21 0.0003021 Eth | $90.02 74.992 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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