Overview
Max Total Supply
2,200,363,650.778434106298758293 CRV
Holders
88,563 ( 0.030%)
Market
Price
$1.25 @ 0.000310 ETH (+10.71%)
Onchain Market Cap
$2,750,786,366.84
Circulating Supply Market Cap
$1,558,260,944.42
Other Info
Token Contract (WITH 18 Decimals)
Balance
100,154.559628824419932179 CRVValue
$125,208.30 ( ~31.0555 Eth) [0.0046%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Websea | CRV-USDT | $1.25 0.0003083 Eth | $145,090,944.00 0.000 CRV | 0.0000% |
2 | WhiteBIT | CRV-USDT | $1.25 0.0003089 Eth | $111,581,947.00 89,481,395.572 CRV | 13.1102% |
3 | Gate.io | CRV-USDT | $1.24 0.0003065 Eth | $87,586,094.00 75,649,478.646 CRV | 11.0836% |
4 | OKX | CRV-USDT | $1.24 0.0003063 Eth | $72,378,718.00 61,751,474.330 CRV | 9.0474% |
5 | Bitget | CRV-USDT | $1.23 0.0003056 Eth | $53,743,560.00 45,492,080.549 CRV | 6.6652% |
6 | Coinbase Exchange | CRV-USD | $1.24 0.0003061 Eth | $49,296,544.00 39,890,390.150 CRV | 5.8445% |
7 | MEXC | CRV-USDT | $1.23 0.0003049 Eth | $47,163,979.00 38,280,980.515 CRV | 5.6087% |
8 | Bitunix | CRV-USDT | $1.25 0.0003083 Eth | $40,989,668.00 32,921,967.400 CRV | 4.8235% |
9 | Bybit | CRV-USDT | $1.23 0.0003056 Eth | $37,755,224.00 32,374,287.670 CRV | 4.7433% |
10 | HTX | CRV-USDT | $1.23 0.0003059 Eth | $34,004,784.00 29,548,222.338 CRV | 4.3292% |
11 | XT.COM | CRV-USDT | $1.24 0.0003076 Eth | $21,650,730.00 18,354,551.200 CRV | 2.6892% |
12 | Slex | CRV-USDT | $1.24 0.0003078 Eth | $20,901,551.00 18,179,635.600 CRV | 2.6636% |
13 | BTSE | CRV-USDT | $1.23 0.0003053 Eth | $18,680,667.00 15,155,369.401 CRV | 2.2205% |
14 | DigiFinex | CRV-USDT | $1.24 0.0003067 Eth | $14,773,443.00 11,933,022.100 CRV | 1.7483% |
15 | Kraken | CRV-USD | $1.24 0.0003069 Eth | $12,304,225.00 9,930,770.392 CRV | 1.4550% |
16 | Niza Global | CRV-USD | $1.23 0.0003050 Eth | $11,413,424.00 9,908,260.412 CRV | 1.4517% |
17 | KuCoin | CRV-USDT | $1.23 0.0003056 Eth | $11,311,535.00 9,167,877.025 CRV | 1.3432% |
18 | BYDFi | CRV-USDT | $1.23 0.0003048 Eth | $11,264,168.00 9,148,237.200 CRV | 1.3403% |
19 | LBank | CRV-USDT | $1.24 0.0003062 Eth | $9,280,807.00 7,508,095.790 CRV | 1.1000% |
20 | Currency.com | CRV-USD | $1.24 0.0003071 Eth | $8,994,205.00 7,247,838.000 CRV | 1.0619% |
21 | Dex-Trade | CRV-USDT | $1.24 0.0003079 Eth | $8,742,191.00 7,028,880.049 CRV | 1.0298% |
22 | CoinW | CRV-USDT | $1.24 0.0003083 Eth | $7,952,027.00 6,388,368.864 CRV | 0.9360% |
23 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.25 0.0003091 Eth | $7,916,508.00 6,551,825.534 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.9599% |
24 | Binance | CRV-TRY | $1.25 0.0003085 Eth | $7,276,429.00 6,003,397.200 CRV | 0.8796% |
25 | Biconomy.com | CRV-USDT | $1.23 0.0003057 Eth | $7,054,782.00 5,997,125.728 CRV | 0.8787% |
26 | Binance | CRV-USDC | $1.24 0.0003076 Eth | $6,873,442.00 5,794,998.500 CRV | 0.8490% |
27 | Coinstore | CRV-USDT | $1.24 0.0003079 Eth | $6,594,516.00 5,603,700.900 CRV | 0.8210% |
28 | Bitkub | CRV-THB | $1.23 0.0003047 Eth | $5,808,106.00 4,717,678.996 CRV | 0.6912% |
29 | Binance | CRV-BTC | $1.24 0.0003061 Eth | $5,735,542.00 4,767,489.100 CRV | 0.6985% |
30 | Luno | CRV-MYR | $1.23 0.0003031 Eth | $5,645,238.00 4,603,160.070 CRV | 0.6744% |
31 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $1.23 0.0003051 Eth | $4,858,247.00 3,977,234.464 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.5827% |
32 | BingX | CRV-USDT | $1.23 0.0003058 Eth | $4,722,503.00 4,013,508.015 CRV | 0.5880% |
33 | Hotcoin | CRV-USDT | $1.23 0.0003046 Eth | $4,714,797.00 3,831,915.700 CRV | 0.5614% |
34 | PointPay | CRV-USDT | $1.24 0.0003061 Eth | $4,552,583.00 3,852,878.461 CRV | 0.5645% |
35 | Bullish | CRV-USDC | $1.24 0.0003081 Eth | $4,319,825.00 3,763,233.232 CRV | 0.5514% |
36 | CoinEx | CRV-USDT | $1.24 0.0003074 Eth | $4,313,709.00 3,635,662.215 CRV | 0.5327% |
37 | Ourbit | CRV-USDT | $1.24 0.0003076 Eth | $4,161,570.00 3,537,292.270 CRV | 0.5183% |
38 | Bitvavo | CRV-EUR | $1.24 0.0003082 Eth | $4,091,416.00 3,287,774.946 CRV | 0.4817% |
39 | Phemex | CRV-USDT | $1.23 0.0003057 Eth | $3,667,576.00 2,972,073.040 CRV | 0.4354% |
40 | WhiteBIT | CRV-BTC | $1.23 0.0003058 Eth | $3,416,298.00 2,767,204.400 CRV | 0.4054% |
41 | FMCPAY | CRV-USDT | $1.23 0.0003057 Eth | $3,166,858.00 2,737,095.980 CRV | 0.4010% |
42 | BitMart | CRV-USDT | $1.24 0.0003080 Eth | $3,038,655.00 2,444,171.160 CRV | 0.3581% |
43 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.25 0.0003106 Eth | $2,857,536.00 676.045 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0001% |
44 | Icrypex | CRV-USDT | $1.23 0.0003058 Eth | $2,608,803.00 2,113,548.768 CRV | 0.3097% |
45 | Kraken | CRV-EUR | $1.24 0.0003062 Eth | $2,533,426.00 2,049,216.817 CRV | 0.3002% |
46 | P2B | CRV-USD | $1.23 0.0003057 Eth | $1,902,777.00 1,541,958.320 CRV | 0.2259% |
47 | Coinbase Exchange | CRV-EUR | $1.24 0.0003067 Eth | $1,887,948.00 1,525,150.510 CRV | 0.2235% |
48 | WEEX | CRV-USDT | $1.24 0.0003079 Eth | $1,502,958.00 1,208,495.116 CRV | 0.1771% |
49 | Upbit | CRV-BTC | $1.25 0.0003108 Eth | $1,475,914.00 1,176,490.536 CRV | 0.1724% |
50 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.23 0.0003043 Eth | $1,416,355.00 1,347,596.527 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1974% |
51 | WhiteBIT | CRV-TRY | $1.25 0.0003085 Eth | $1,338,345.00 1,073,760.400 CRV | 0.1573% |
52 | OKX | CRV-USDC | $1.24 0.0003062 Eth | $1,305,011.00 1,113,230.579 CRV | 0.1631% |
53 | LATOKEN | CRV-BTC | $1.24 0.0003070 Eth | $1,184,433.00 955,676.356 CRV | 0.1400% |
54 | BitDelta | CRV-USDT | $1.24 0.0003075 Eth | $960,683.00 840,615.500 CRV | 0.1232% |
55 | Gemini | CRV-USD | $1.24 0.0003065 Eth | $890,629.00 719,816.496 CRV | 0.1055% |
56 | Nonkyc.io | CRV-USDT | $1.24 0.0003071 Eth | $714,534.00 618,751.603 CRV | 0.0907% |
57 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.24 0.0003070 Eth | $663,566.00 545,637.189 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0799% |
58 | Bitso | CRV-USD | $1.26 0.0003106 Eth | $658,650.00 524,766.459 CRV | 0.0769% |
59 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $1.24 0.0003083 Eth | $631,765.00 541,919.325 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0794% |
60 | WEEX | CRV-USDC | $1.24 0.0003076 Eth | $432,415.00 376,614.000 CRV | 0.0552% |
61 | Bitazza | CRV-USDT | $1.25 0.0003087 Eth | $432,158.00 372,135.400 CRV | 0.0545% |
62 | Coinbase Exchange | CRV-GBP | $1.24 0.0003069 Eth | $418,266.00 337,599.630 CRV | 0.0495% |
63 | BigONE | CRV-USDT | $1.24 0.0003067 Eth | $388,238.00 313,799.345 CRV | 0.0460% |
64 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.26 0.0003121 Eth | $387,830.00 136,413.455 0X4200000000000000000000000000000000000042 | 0.0200% |
65 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.24 0.0003078 Eth | $380,416.00 328,440.377 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0481% |
66 | Coinbase Exchange | CRV-BTC | $1.24 0.0003068 Eth | $375,362.00 303,079.570 CRV | 0.0444% |
67 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.23 0.0003035 Eth | $302,534.00 246,174.867 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0361% |
68 | KickEX | CRV-USDT | $1.24 0.0003065 Eth | $278,987.00 225,453.434 CRV | 0.0330% |
69 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.23 0.0003035 Eth | $255,185.00 243,521.566 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0357% |
70 | Bitget | CRV-BTC | $1.24 0.0003060 Eth | $252,582.00 207,360.586 CRV | 0.0304% |
71 | LATOKEN | CRV-USDT | $1.24 0.0003078 Eth | $250,688.00 201,686.647 CRV | 0.0295% |
72 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.23 0.0003043 Eth | $222,973.00 189,919.754 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0278% |
73 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.24 0.0003073 Eth | $196,585.00 169,116.683 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0248% |
74 | Dex-Trade | CRV-BTC | $1.25 0.0003084 Eth | $186,334.00 149,587.581 CRV | 0.0219% |
75 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $1.25 0.0003084 Eth | $175,527.00 142,476.476 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0209% |
76 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.24 0.0003066 Eth | $159,471.00 127,570.342 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0187% |
77 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.24 0.0003081 Eth | $123,401.00 101,781.031 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0149% |
78 | CoinDCX | CRV-INR | $1.27 0.0003136 Eth | $108,137.00 0.000 CRV | 0.0000% |
79 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.24 0.0003069 Eth | $73,606.00 61,251.090 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0090% |
80 | Luno | CRV-ZAR | $1.27 0.0003135 Eth | $49,941.00 39,449.400 CRV | 0.0058% |
81 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.24 0.0003072 Eth | $33,086.00 27,908.797 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0041% |
82 | Nonkyc.io | CRV-BTC | $1.24 0.0003066 Eth | $27,448.00 23,429.085 CRV | 0.0034% |
83 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.25 0.0003096 Eth | $21,230.00 17,085.178 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0025% |
84 | Gate.io | CRV-BTC | $1.25 0.0003108 Eth | $16,331.99 13,729.959 CRV | 0.0020% |
85 | HashKey Global | CRV-USDT | $1.24 0.0003079 Eth | $15,536.76 13,538.100 CRV | 0.0020% |
86 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.23 0.0003043 Eth | $14,208.72 11,266.698 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0017% |
87 | DeFi Swap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.23 0.0003042 Eth | $12,914.42 10,695.814 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0016% |
88 | Gate.io | CRV-TRY | $1.24 0.0003076 Eth | $10,853.60 8,769.650 CRV | 0.0013% |
89 | Luno | CRV-XBT | $1.26 0.0003118 Eth | $10,516.20 8,356.000 CRV | 0.0012% |
90 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.24 0.0003073 Eth | $7,301.56 6,186.095 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0009% |
91 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.24 0.0003070 Eth | $5,902.22 4,927.196 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0007% |
92 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.24 0.0003062 Eth | $4,735.16 3,942.403 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0006% |
93 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $1.25 0.0003090 Eth | $4,533.63 3,885.273 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0006% |
94 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.24 0.0003080 Eth | $3,838.04 3,136.538 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0005% |
95 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $1.22 0.0003019 Eth | $2,176.73 1,872.919 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0003% |
96 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.25 0.0003083 Eth | $1,160.47 959.261 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
97 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.24 0.0003073 Eth | $499.62 432.376 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0001% |
98 | Swapr (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.24 0.0003077 Eth | $410.24 336.413 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0000% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.25 0.0003087 Eth | $344.83 280.326 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.23 0.0003044 Eth | $263.40 218.588 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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