Overview
Max Total Supply
2,200,071,960.583493876073672995 CRV
Holders
88,637 ( -0.012%)
Market
Price
$1.07 @ 0.000271 ETH (-13.17%)
Onchain Market Cap
$2,352,715,507.99
Circulating Supply Market Cap
$1,332,544,803.32
Other Info
Token Contract (WITH 18 Decimals)
Balance
933.92503260428383886 CRVValue
$998.72 ( ~0.25323774643252 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.074 0.0002722 Eth | $248,925,722.00 227,197,261.100 CRV | 24.0253% |
2 | Websea | CRV-USDT | $1.078 0.0002730 Eth | $132,491,950.00 0.000 CRV | 0.0000% |
3 | WhiteBIT | CRV-USDT | $1.078 0.0002729 Eth | $97,338,555.00 90,324,063.905 CRV | 9.5514% |
4 | Gate.io | CRV-USDT | $1.078 0.0002733 Eth | $84,658,082.00 77,694,288.223 CRV | 8.2159% |
5 | OKX | CRV-USDT | $1.076 0.0002728 Eth | $73,520,007.00 66,992,121.555 CRV | 7.0842% |
6 | MEXC | CRV-USDT | $1.075 0.0002723 Eth | $46,031,258.00 42,807,843.544 CRV | 4.5268% |
7 | Bybit | CRV-USDT | $1.077 0.0002728 Eth | $40,858,297.00 36,961,620.060 CRV | 3.9086% |
8 | Coinbase Exchange | CRV-USD | $1.074 0.0002724 Eth | $40,583,072.00 37,790,364.190 CRV | 3.9962% |
9 | Bitget | CRV-USDT | $1.078 0.0002731 Eth | $38,450,146.00 34,614,690.213 CRV | 3.6604% |
10 | Bitunix | CRV-USDT | $1.075 0.0002725 Eth | $36,073,850.00 33,550,442.300 CRV | 3.5478% |
11 | HTX | CRV-USDT | $1.077 0.0002728 Eth | $32,090,842.00 29,318,162.667 CRV | 3.1003% |
12 | Slex | CRV-USDT | $1.076 0.0002725 Eth | $21,376,481.00 19,459,391.200 CRV | 2.0578% |
13 | XT.COM | CRV-USDT | $1.077 0.0002728 Eth | $19,980,633.00 18,234,691.900 CRV | 1.9283% |
14 | BTSE | CRV-USDT | $1.077 0.0002757 Eth | $17,576,980.00 16,316,436.109 CRV | 1.7254% |
15 | Niza Global | CRV-USD | $1.076 0.0002739 Eth | $15,033,325.00 13,442,896.011 CRV | 1.4215% |
16 | LBank | CRV-USDT | $1.075 0.0002724 Eth | $14,612,954.00 13,598,229.530 CRV | 1.4380% |
17 | Kraken | CRV-USD | $1.077 0.0002727 Eth | $14,095,133.00 13,087,402.733 CRV | 1.3839% |
18 | DigiFinex | CRV-USDT | $1.079 0.0002733 Eth | $13,248,765.00 12,283,506.300 CRV | 1.2989% |
19 | Currency.com | CRV-USD | $1.07 0.0002724 Eth | $11,079,201.00 10,351,008.000 CRV | 1.0946% |
20 | KuCoin | CRV-USDT | $1.077 0.0002727 Eth | $10,205,017.00 9,474,894.961 CRV | 1.0019% |
21 | BYDFi | CRV-USDT | $1.074 0.0002723 Eth | $9,586,104.00 8,929,277.600 CRV | 0.9442% |
22 | Binance | CRV-BTC | $1.08 0.0002737 Eth | $8,758,896.00 7,689,863.900 CRV | 0.8132% |
23 | Binance | CRV-USDC | $1.076 0.0002726 Eth | $8,294,063.00 7,451,657.000 CRV | 0.7880% |
24 | Hotcoin | CRV-USDT | $1.075 0.0002725 Eth | $7,930,178.00 7,377,197.200 CRV | 0.7801% |
25 | CoinW | CRV-USDT | $1.075 0.0002723 Eth | $7,669,256.00 7,133,418.112 CRV | 0.7543% |
26 | Dex-Trade | CRV-USDT | $1.066 0.0002716 Eth | $6,620,178.00 6,210,923.567 CRV | 0.6568% |
27 | Biconomy.com | CRV-USDT | $1.071 0.0002725 Eth | $6,463,649.00 5,868,489.300 CRV | 0.6206% |
28 | Coinstore | CRV-USDT | $1.077 0.0002730 Eth | $6,412,257.00 5,844,550.600 CRV | 0.6180% |
29 | Bitvavo | CRV-EUR | $1.072 0.0002723 Eth | $5,946,975.00 5,545,419.516 CRV | 0.5864% |
30 | Trubit | CRV-USDT | $1.076 0.0002725 Eth | $5,614,134.00 5,134,330.700 CRV | 0.5429% |
31 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.069 0.0002710 Eth | $5,605,594.00 4,985,670.448 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.5272% |
32 | Toobit | CRV-USDT | $1.068 0.0002713 Eth | $4,995,007.00 4,551,358.900 CRV | 0.4813% |
33 | Binance | CRV-TRY | $1.078 0.0002731 Eth | $4,670,684.00 4,184,828.300 CRV | 0.4425% |
34 | BingX | CRV-USDT | $1.078 0.0002733 Eth | $4,239,068.00 3,855,712.063 CRV | 0.4077% |
35 | PointPay | CRV-USDT | $1.074 0.0002725 Eth | $4,113,482.00 3,759,870.622 CRV | 0.3976% |
36 | Ourbit | CRV-USDT | $1.077 0.0002728 Eth | $4,005,030.00 3,647,709.270 CRV | 0.3857% |
37 | Luno | CRV-MYR | $1.074 0.0002722 Eth | $3,878,645.00 3,610,364.480 CRV | 0.3818% |
38 | Phemex | CRV-USDT | $1.069 0.0002715 Eth | $3,622,541.00 3,388,047.280 CRV | 0.3583% |
39 | Bitkub | CRV-THB | $1.077 0.0002730 Eth | $3,504,001.00 3,253,060.263 CRV | 0.3440% |
40 | Bullish | CRV-USDC | $1.077 0.0002730 Eth | $3,450,975.00 3,114,364.097 CRV | 0.3293% |
41 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.073 0.0002718 Eth | $3,443,201.00 3,060,869.777 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3237% |
42 | Bithumb | CRV-KRW | $1.066 0.0002701 Eth | $3,059,587.00 2,869,666.545 CRV | 0.3035% |
43 | FMCPAY | CRV-USDT | $1.072 0.0002716 Eth | $2,830,043.00 2,583,082.910 CRV | 0.2732% |
44 | CoinEx | CRV-USDT | $1.072 0.0002714 Eth | $2,650,556.00 2,407,363.702 CRV | 0.2546% |
45 | BitMart | CRV-USDT | $1.075 0.0002722 Eth | $2,359,167.00 2,194,664.440 CRV | 0.2321% |
46 | Icrypex | CRV-USDT | $1.075 0.0002725 Eth | $2,296,071.00 2,135,207.301 CRV | 0.2258% |
47 | Kraken | CRV-EUR | $1.078 0.0002732 Eth | $2,047,611.00 1,898,995.077 CRV | 0.2008% |
48 | LATOKEN | CRV-BTC | $1.083 0.0002765 Eth | $1,948,969.00 1,799,970.549 CRV | 0.1903% |
49 | Coinbase Exchange | CRV-EUR | $1.075 0.0002725 Eth | $1,895,594.00 1,764,116.150 CRV | 0.1865% |
50 | WhiteBIT | CRV-BTC | $1.077 0.0002746 Eth | $1,685,324.00 1,565,466.800 CRV | 0.1655% |
51 | WEEX | CRV-USDT | $1.073 0.0002745 Eth | $1,502,662.00 1,400,621.643 CRV | 0.1481% |
52 | OKX | CRV-USDC | $1.075 0.0002725 Eth | $1,295,663.00 1,177,460.165 CRV | 0.1245% |
53 | P2B | CRV-USD | $1.074 0.0002722 Eth | $1,233,945.00 1,148,924.530 CRV | 0.1215% |
54 | WhiteBIT | CRV-TRY | $1.079 0.0002737 Eth | $1,018,807.00 943,975.400 CRV | 0.0998% |
55 | BitDelta | CRV-USDT | $1.076 0.0002724 Eth | $922,701.00 834,574.800 CRV | 0.0883% |
56 | Gemini | CRV-USD | $1.078 0.0002730 Eth | $909,327.00 843,766.757 CRV | 0.0892% |
57 | Bitso | CRV-USD | $1.078 0.0002733 Eth | $879,464.00 815,504.328 CRV | 0.0862% |
58 | Nonkyc.io | CRV-USDT | $1.075 0.0002722 Eth | $830,391.00 756,314.379 CRV | 0.0800% |
59 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.062 0.0002689 Eth | $751,051.00 701,307.172 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0742% |
60 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.078 0.0002739 Eth | $653,847.00 591,823.425 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0626% |
61 | Bitazza | CRV-USDT | $1.088 0.0002763 Eth | $574,427.00 518,251.700 CRV | 0.0548% |
62 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.067 0.0002704 Eth | $562,770.00 513,833.853 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0543% |
63 | BigONE | CRV-USDT | $1.074 0.0002720 Eth | $509,613.00 474,519.836 CRV | 0.0502% |
64 | Curve (Optimism) | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.071 0.0002713 Eth | $488,624.00 504,842.273 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0534% |
65 | Coinbase Exchange | CRV-GBP | $1.071 0.0002717 Eth | $447,084.00 417,332.180 CRV | 0.0441% |
66 | WEEX | CRV-USDC | $1.082 0.0002763 Eth | $407,967.00 371,067.000 CRV | 0.0392% |
67 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.072 0.0002728 Eth | $341,467.00 136,728.440 0X4200000000000000000000000000000000000042 | 0.0145% |
68 | Coinbase Exchange | CRV-BTC | $1.075 0.0002727 Eth | $323,875.00 301,232.040 CRV | 0.0319% |
69 | KickEX | CRV-USDT | $1.08 0.0002737 Eth | $233,478.00 216,166.914 CRV | 0.0229% |
70 | LATOKEN | CRV-USDT | $1.075 0.0002738 Eth | $228,941.00 213,045.029 CRV | 0.0225% |
71 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.061 0.0002689 Eth | $224,871.00 206,155.099 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0218% |
72 | Dex-Trade | CRV-BTC | $1.077 0.0002728 Eth | $211,819.00 196,766.130 CRV | 0.0208% |
73 | Bitstamp | CRV-USD | $1.066 0.0002699 Eth | $210,313.00 197,373.669 CRV | 0.0209% |
74 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.079 0.0002738 Eth | $199,858.00 179,803.325 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0190% |
75 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.068 0.0002706 Eth | $144,460.00 125,141.082 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0132% |
76 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.079 0.0002733 Eth | $103,389.00 92,811.364 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0098% |
77 | P2B | CRV-BTC | $1.071 0.0002713 Eth | $82,631.00 77,129.500 CRV | 0.0082% |
78 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.071 0.0002712 Eth | $74,212.00 65,534.384 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0069% |
79 | Globe | CRV-USDT | $1.063 0.0002693 Eth | $59,452.00 54,020.897 CRV | 0.0057% |
80 | Luno | CRV-ZAR | $1.082 0.0002762 Eth | $54,655.00 50,533.270 CRV | 0.0053% |
81 | Gate.io | CRV-ETH | $1.077 0.0002729 Eth | $45,570.00 40,187.180 CRV | 0.0042% |
82 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.068 0.0002711 Eth | $36,187.00 32,288.876 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0034% |
83 | Nonkyc.io | CRV-BTC | $1.075 0.0002728 Eth | $36,131.00 31,988.954 CRV | 0.0034% |
84 | Korbit | CRV-KRW | $1.065 0.0002697 Eth | $31,670.00 28,722.389 CRV | 0.0030% |
85 | Luno | CRV-XBT | $1.065 0.0002698 Eth | $19,389.67 18,213.500 CRV | 0.0019% |
86 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.067 0.0002702 Eth | $18,092.66 16,418.119 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0017% |
87 | DeFi Swap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.086 0.0002751 Eth | $11,259.78 9,904.880 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0010% |
88 | Gate.io | CRV-TRY | $1.08 0.0002739 Eth | $9,861.54 8,901.600 CRV | 0.0009% |
89 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.10 0.0002794 Eth | $7,258.12 6,378.943 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0007% |
90 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $1.079 0.0002752 Eth | $6,423.61 5,869.856 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0006% |
91 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.082 0.0002742 Eth | $6,408.56 5,586.343 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0006% |
92 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.075 0.0002722 Eth | $4,383.74 3,981.946 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0004% |
93 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X5E8422345238F34275888049021821E8E08CAA1F | $1.11 0.0002810 Eth | $4,267.59 3,649.631 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0004% |
94 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.083 0.0002744 Eth | $2,664.76 2,353.267 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0002% |
95 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.076 0.0002732 Eth | $1,007.37 891.054 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
96 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.07 0.0002718 Eth | $413.84 379.356 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0000% |
97 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.049 0.0002669 Eth | $364.64 329.269 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
98 | Swapr (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.076 0.0002728 Eth | $300.30 265.837 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0000% |
99 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X1F32B1C2345538C0C6F582FCB022739C4A194EBB | $1.24 0.0003157 Eth | $295.72 244.575 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.067 0.0002714 Eth | $283.82 250.606 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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