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Overview
Max Total Supply
2,201,152,526.06063957485688244 CRV
Holders
88,596 ( -0.126%)
Market
Price
$1.20 @ 0.000301 ETH (+1.10%)
Onchain Market Cap
$2,631,881,226.13
Circulating Supply Market Cap
$1,494,045,742.40
Other Info
Token Contract (WITH 18 Decimals)
Balance
1,041.66 CRVValue
$1,245.50 ( ~0.313739841442433 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.19 0.0002997 Eth | $114,337,552.00 96,000,784.700 CRV | 22.9987% |
2 | Websea | CRV-USDT | $1.20 0.0003008 Eth | $61,491,710.00 0.000 CRV | 0.0000% |
3 | WhiteBIT | CRV-USDT | $1.19 0.0002997 Eth | $61,374,203.00 51,571,798.800 CRV | 12.3549% |
4 | Gate.io | CRV-USDT | $1.19 0.0003000 Eth | $33,747,898.00 28,383,847.990 CRV | 6.7998% |
5 | OKX | CRV-USDT | $1.19 0.0002996 Eth | $31,552,252.00 26,475,303.181 CRV | 6.3426% |
6 | Slex | CRV-USDT | $1.19 0.0003000 Eth | $22,878,429.00 19,286,514.800 CRV | 4.6204% |
7 | Bitget | CRV-USDT | $1.19 0.0002996 Eth | $20,201,791.00 16,816,165.958 CRV | 4.0286% |
8 | Bybit | CRV-USDT | $1.19 0.0003000 Eth | $16,821,893.00 14,153,835.180 CRV | 3.3908% |
9 | Coinbase Exchange | CRV-USD | $1.19 0.0003002 Eth | $16,255,715.00 13,622,488.310 CRV | 3.2635% |
10 | MEXC | CRV-USDT | $1.19 0.0003000 Eth | $16,077,802.00 13,485,049.241 CRV | 3.2306% |
11 | Bitunix | CRV-USDT | $1.19 0.0003000 Eth | $16,052,978.00 13,456,732.200 CRV | 3.2238% |
12 | BTSE | CRV-USDT | $1.19 0.0003004 Eth | $12,604,533.00 10,555,993.338 CRV | 2.5289% |
13 | XT.COM | CRV-USDT | $1.21 0.0003048 Eth | $9,328,895.00 7,833,091.000 CRV | 1.8766% |
14 | HTX | CRV-USDT | $1.19 0.0002999 Eth | $8,737,590.00 7,324,876.206 CRV | 1.7548% |
15 | DigiFinex | CRV-USDT | $1.19 0.0002996 Eth | $6,244,244.00 5,246,838.000 CRV | 1.2570% |
16 | LBank | CRV-USDT | $1.20 0.0003028 Eth | $5,349,082.00 4,445,592.820 CRV | 1.0650% |
17 | CoinW | CRV-USDT | $1.19 0.0003003 Eth | $4,620,049.00 3,870,046.523 CRV | 0.9271% |
18 | FameEX | CRV-USDT | $1.19 0.0003001 Eth | $4,568,408.00 3,835,200.692 CRV | 0.9188% |
19 | BYDFi | CRV-USDT | $1.20 0.0003008 Eth | $4,514,199.00 3,775,090.300 CRV | 0.9044% |
20 | Bitvavo | CRV-EUR | $1.19 0.0002988 Eth | $4,181,634.00 3,520,685.220 CRV | 0.8434% |
21 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.19 0.0002999 Eth | $3,937,356.00 3,288,527.867 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.7878% |
22 | Dex-Trade | CRV-USDT | $1.20 0.0003020 Eth | $3,923,839.00 3,268,732.300 CRV | 0.7831% |
23 | Biconomy.com | CRV-USDT | $1.19 0.0002997 Eth | $3,728,533.00 3,133,163.800 CRV | 0.7506% |
24 | KuCoin | CRV-USDT | $1.19 0.0002996 Eth | $3,656,235.00 3,072,216.716 CRV | 0.7360% |
25 | Bitrue | CRV-XRP | $1.20 0.0003022 Eth | $3,652,791.00 3,043,700.380 CRV | 0.7292% |
26 | Kraken | CRV-USD | $1.19 0.0003000 Eth | $3,600,589.00 3,020,628.522 CRV | 0.7236% |
27 | Trubit | CRV-USDT | $1.20 0.0003028 Eth | $3,414,318.00 2,869,836.200 CRV | 0.6875% |
28 | Phemex | CRV-USDT | $1.19 0.0003005 Eth | $3,244,385.00 2,715,571.220 CRV | 0.6506% |
29 | Coinstore | CRV-USDT | $1.20 0.0003008 Eth | $3,146,595.00 2,637,761.000 CRV | 0.6319% |
30 | FMFW.io | CRV-USDT | $1.19 0.0003005 Eth | $2,932,074.00 2,455,125.300 CRV | 0.5882% |
31 | HitBTC | CRV-USDT | $1.19 0.0003000 Eth | $2,880,625.00 2,421,022.800 CRV | 0.5800% |
32 | FMCPAY | CRV-USDT | $1.19 0.0003003 Eth | $2,864,220.00 2,410,951.680 CRV | 0.5776% |
33 | Bullish | CRV-USDC | $1.20 0.0003009 Eth | $2,793,674.00 2,352,683.599 CRV | 0.5636% |
34 | Bitrue | CRV-USDT | $1.19 0.0002999 Eth | $2,767,921.00 2,322,717.420 CRV | 0.5564% |
35 | Bitkub | CRV-THB | $1.21 0.0003035 Eth | $2,501,811.00 2,074,667.756 CRV | 0.4970% |
36 | BingX | CRV-USDT | $1.19 0.0002998 Eth | $2,309,056.00 1,945,136.207 CRV | 0.4660% |
37 | Binance | CRV-TRY | $1.19 0.0003003 Eth | $2,306,497.00 1,922,422.000 CRV | 0.4605% |
38 | Toobit | CRV-USDT | $1.19 0.0003005 Eth | $2,304,322.00 1,934,578.800 CRV | 0.4635% |
39 | Binance | CRV-BTC | $1.19 0.0003001 Eth | $2,117,642.00 1,785,046.200 CRV | 0.4276% |
40 | Luno | CRV-MYR | $1.20 0.0003012 Eth | $1,958,330.00 1,636,787.350 CRV | 0.3921% |
41 | PointPay | CRV-USDT | $1.20 0.0003007 Eth | $1,910,450.00 1,603,606.848 CRV | 0.3842% |
42 | Ourbit | CRV-USDT | $1.20 0.0003007 Eth | $1,902,901.00 1,597,657.080 CRV | 0.3827% |
43 | Hibt | CRV-USDT | $1.19 0.0003001 Eth | $1,890,237.00 1,586,039.082 CRV | 0.3800% |
44 | CoinEx | CRV-USDT | $1.20 0.0003010 Eth | $1,684,714.00 1,419,093.243 CRV | 0.3400% |
45 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.19 0.0003008 Eth | $1,613,163.00 1,356,329.854 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3249% |
46 | Binance | CRV-USDC | $1.19 0.0002999 Eth | $1,576,573.00 1,332,189.200 CRV | 0.3191% |
47 | WEEX | CRV-USDT | $1.19 0.0003000 Eth | $1,502,213.00 1,259,856.068 CRV | 0.3018% |
48 | Bithumb | CRV-KRW | $1.18 0.0002968 Eth | $1,357,187.00 1,146,609.892 CRV | 0.2747% |
49 | BitMart | CRV-USDT | $1.19 0.0002999 Eth | $1,160,075.00 973,621.840 CRV | 0.2332% |
50 | WhiteBIT | CRV-BTC | $1.19 0.0002997 Eth | $1,157,518.00 972,538.200 CRV | 0.2330% |
51 | OKX | CRV-USDC | $1.19 0.0003004 Eth | $949,224.00 799,995.260 CRV | 0.1917% |
52 | P2B | CRV-USD | $1.19 0.0002995 Eth | $891,900.00 749,495.410 CRV | 0.1796% |
53 | Icrypex | CRV-USDT | $1.19 0.0002997 Eth | $811,214.00 681,028.154 CRV | 0.1632% |
54 | Currency.com | CRV-USD | $1.19 0.0003001 Eth | $759,270.00 636,624.000 CRV | 0.1525% |
55 | BitDelta | CRV-USDT | $1.19 0.0003002 Eth | $666,895.00 561,164.700 CRV | 0.1344% |
56 | Hotcoin | CRV-USDT | $1.19 0.0003000 Eth | $656,287.00 550,716.100 CRV | 0.1319% |
57 | Kraken | CRV-EUR | $1.19 0.0002990 Eth | $535,973.00 451,136.865 CRV | 0.1081% |
58 | Coinbase Exchange | CRV-EUR | $1.19 0.0002991 Eth | $477,031.00 401,239.040 CRV | 0.0961% |
59 | Bitso | CRV-USD | $1.20 0.0003012 Eth | $457,342.00 382,083.413 CRV | 0.0915% |
60 | WhiteBIT | CRV-TRY | $1.20 0.0003016 Eth | $449,614.00 374,929.900 CRV | 0.0898% |
61 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.20 0.0003030 Eth | $430,311.00 367,013.988 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0879% |
62 | LATOKEN | CRV-BTC | $1.19 0.0003001 Eth | $411,274.00 344,844.655 CRV | 0.0826% |
63 | BloFin | CRV-USDT | $1.20 0.0003011 Eth | $391,700.00 329,752.400 CRV | 0.0790% |
64 | Bitazza | CRV-USDT | $1.20 0.0003032 Eth | $385,416.00 323,108.100 CRV | 0.0774% |
65 | Gemini | CRV-USD | $1.19 0.0002999 Eth | $357,394.00 299,953.039 CRV | 0.0719% |
66 | AscendEX (BitMax) | CRV-USDT | $1.19 0.0002992 Eth | $347,019.00 291,967.800 CRV | 0.0699% |
67 | WEEX | CRV-USDC | $1.19 0.0003000 Eth | $327,407.00 275,080.000 CRV | 0.0659% |
68 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.19 0.0002993 Eth | $326,503.00 271,870.579 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0651% |
69 | Upbit | CRV-BTC | $1.20 0.0003026 Eth | $324,525.00 269,918.756 CRV | 0.0647% |
70 | Pionex | CRV-USDT | $1.20 0.0003013 Eth | $291,899.00 244,765.048 CRV | 0.0586% |
71 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.20 0.0003018 Eth | $227,918.00 189,516.385 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0454% |
72 | Coinbase Exchange | CRV-GBP | $1.19 0.0002996 Eth | $220,076.00 184,816.970 CRV | 0.0443% |
73 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.19 0.0003004 Eth | $197,767.00 74,340.484 0X4200000000000000000000000000000000000042 | 0.0178% |
74 | BVOX | CRV-USDT | $1.19 0.0003005 Eth | $179,152.00 151,008.400 CRV | 0.0362% |
75 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.18 0.0002971 Eth | $164,574.00 141,875.652 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0340% |
76 | Binance US | CRV-USDT | $1.19 0.0003006 Eth | $137,217.00 114,861.122 CRV | 0.0275% |
77 | LATOKEN | CRV-USDT | $1.20 0.0003008 Eth | $112,459.00 94,081.539 CRV | 0.0225% |
78 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.20 0.0003013 Eth | $111,018.00 92,983.316 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0223% |
79 | BigONE | CRV-USDT | $1.19 0.0003007 Eth | $104,652.00 87,607.170 CRV | 0.0210% |
80 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.20 0.0003019 Eth | $97,467.00 81,613.855 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0196% |
81 | TokoCrypto | CRV-USDT | $1.20 0.0003023 Eth | $75,446.00 62,815.512 CRV | 0.0150% |
82 | Azbit | CRV-USDT | $1.20 0.0003019 Eth | $59,524.00 50,223.610 CRV | 0.0120% |
83 | Bitstamp | CRV-USD | $1.19 0.0003007 Eth | $58,116.00 48,638.954 CRV | 0.0117% |
84 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.18 0.0002973 Eth | $45,272.00 38,347.815 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0092% |
85 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.18 0.0002971 Eth | $43,837.00 37,010.806 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0089% |
86 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.20 0.0003030 Eth | $23,779.00 19,761.504 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0047% |
87 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.20 0.0003018 Eth | $21,686.00 18,201.560 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0044% |
88 | Gate.io | CRV-BTC | $1.20 0.0003009 Eth | $19,868.70 16,722.391 CRV | 0.0040% |
89 | Korbit | CRV-KRW | $1.19 0.0003002 Eth | $19,619.96 16,888.178 CRV | 0.0040% |
90 | Globe | CRV-USDT | $1.19 0.0003003 Eth | $19,246.09 16,158.744 CRV | 0.0039% |
91 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.19 0.0002998 Eth | $17,459.79 14,588.716 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0035% |
92 | HashKey Global | CRV-USDT | $1.19 0.0003000 Eth | $15,601.65 13,160.800 CRV | 0.0032% |
93 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.19 0.0003003 Eth | $13,495.89 11,419.456 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0027% |
94 | Luno | CRV-XBT | $1.21 0.0003038 Eth | $6,284.29 5,204.500 CRV | 0.0012% |
95 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.19 0.0003000 Eth | $6,035.71 5,033.707 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0012% |
96 | Gate.io | CRV-ETH | $1.20 0.0003014 Eth | $4,717.90 3,957.770 CRV | 0.0009% |
97 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.20 0.0003020 Eth | $2,195.75 1,830.784 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0004% |
98 | Uniswap V3 (Polygon) | 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A-0X172370D5CD63279EFA6D502DAB29171933A610AF | $1.20 0.0003011 Eth | $1,138.53 485.939 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A | 0.0001% |
99 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.20 0.0003021 Eth | $340.41 284.665 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.20 0.0003026 Eth | $110.40 92.260 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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