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Overview
Max Total Supply
2,213,947,814.717471624459939598 CRV
Holders
88,876 ( -0.021%)
Market
Price
$0.83 @ 0.000255 ETH (+2.56%)
Onchain Market Cap
$1,847,857,089.20
Circulating Supply Market Cap
$1,056,267,333.69
Other Info
Token Contract (WITH 18 Decimals)
Balance
3.5887277744445204 CRVValue
$3.00 ( ~0.00091724009559924 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | BTCC | CRV-USDT | $0.8317 0.0002545 Eth | $49,444,060.00 59,918,117.900 CRV | 32.5252% |
2 | Binance | CRV-USDT | $0.8326 0.0002547 Eth | $23,714,951.00 28,636,645.600 CRV | 15.5448% |
3 | Websea | CRV-USDT | $0.8317 0.0002545 Eth | $8,586,561.00 0.000 CRV | 0.0000% |
4 | Coinbase Exchange | CRV-USD | $0.8338 0.0002550 Eth | $7,017,703.00 8,416,530.840 CRV | 4.5687% |
5 | OKX | CRV-USDT | $0.8332 0.0002549 Eth | $4,923,513.00 5,937,770.709 CRV | 3.2232% |
6 | Bitget | CRV-USDT | $0.8329 0.0002548 Eth | $4,734,253.00 5,669,529.790 CRV | 3.0776% |
7 | Bybit | CRV-USDT | $0.8327 0.0002547 Eth | $3,845,004.00 4,638,878.360 CRV | 2.5181% |
8 | Gate.io | CRV-USDT | $0.8328 0.0002547 Eth | $3,216,830.00 3,872,245.280 CRV | 2.1020% |
9 | HTX | CRV-USDT | $0.8329 0.0002548 Eth | $3,192,124.00 3,858,858.052 CRV | 2.0947% |
10 | BIT | CRV-USDT | $0.8306 0.0002540 Eth | $2,676,235.00 3,222,188.399 CRV | 1.7491% |
11 | KuCoin | CRV-USDT | $0.8329 0.0002548 Eth | $2,384,076.00 2,862,297.236 CRV | 1.5537% |
12 | Trubit | CRV-USDT | $0.8313 0.0002542 Eth | $2,207,532.00 2,655,003.800 CRV | 1.4412% |
13 | MEXC | CRV-USDT | $0.8348 0.0002553 Eth | $2,163,428.00 2,591,585.510 CRV | 1.4068% |
14 | Binance | CRV-USDC | $0.8359 0.0002554 Eth | $2,117,086.00 2,523,628.200 CRV | 1.3699% |
15 | BTSE | CRV-USDT | $0.8383 0.0002559 Eth | $2,015,909.00 2,404,866.381 CRV | 1.3054% |
16 | Bitunix | CRV-USDT | $0.8331 0.0002547 Eth | $1,920,040.00 2,302,840.700 CRV | 1.2500% |
17 | XT.COM | CRV-USDT | $0.8319 0.0002544 Eth | $1,896,089.00 2,289,967.900 CRV | 1.2431% |
18 | FMCPAY | CRV-USDT | $0.8327 0.0002547 Eth | $1,711,276.00 2,071,935.940 CRV | 1.1247% |
19 | LBank | CRV-USDT | $0.8342 0.0002551 Eth | $1,596,022.00 1,913,263.760 CRV | 1.0386% |
20 | Phemex | CRV-USDT | $0.8337 0.0002549 Eth | $1,571,875.00 1,885,480.280 CRV | 1.0235% |
21 | Biconomy.com | CRV-USDT | $0.8344 0.0002550 Eth | $1,561,972.00 1,893,706.800 CRV | 1.0280% |
22 | Slex | CRV-USDT | $0.8331 0.0002549 Eth | $1,445,065.00 1,744,919.000 CRV | 0.9472% |
23 | Kraken | CRV-USD | $0.835 0.0002554 Eth | $1,382,539.00 1,655,735.005 CRV | 0.8988% |
24 | DigiFinex | CRV-USDT | $0.8322 0.0002546 Eth | $1,307,983.00 1,571,671.300 CRV | 0.8531% |
25 | Bullish | CRV-USDC | $0.8315 0.0002543 Eth | $1,280,484.00 1,554,004.379 CRV | 0.8436% |
26 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.8328 0.0002548 Eth | $1,265,884.00 1,521,866.157 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.8261% |
27 | CoinW | CRV-USDT | $0.8321 0.0002546 Eth | $1,096,633.00 1,317,876.973 CRV | 0.7154% |
28 | BYDFi | CRV-USDT | $0.8348 0.0002551 Eth | $996,251.00 1,193,445.600 CRV | 0.6478% |
29 | Bitvavo | CRV-EUR | $0.8366 0.0002558 Eth | $991,485.00 1,185,175.323 CRV | 0.6433% |
30 | Hotcoin | CRV-USDT | $0.8341 0.0002551 Eth | $978,797.00 1,173,470.900 CRV | 0.6370% |
31 | FameEX | CRV-USDT | $0.8337 0.0002549 Eth | $943,147.00 1,139,007.388 CRV | 0.6183% |
32 | CoinEx | CRV-USDT | $0.8352 0.0002554 Eth | $939,746.00 1,154,064.413 CRV | 0.6265% |
33 | Bitrue | CRV-XRP | $0.8364 0.0002552 Eth | $829,674.00 991,943.510 CRV | 0.5385% |
34 | Dex-Trade | CRV-USDT | $0.8334 0.0002550 Eth | $810,259.00 972,242.900 CRV | 0.5278% |
35 | Bitkub | CRV-THB | $0.8305 0.0002539 Eth | $807,263.00 972,027.202 CRV | 0.5276% |
36 | FMFW.io | CRV-USDT | $0.8312 0.0002542 Eth | $758,065.00 911,979.400 CRV | 0.4950% |
37 | HitBTC | CRV-USDT | $0.8311 0.0002542 Eth | $754,187.00 911,979.400 CRV | 0.4950% |
38 | Bitrue | CRV-USDC | $0.8321 0.0002546 Eth | $740,669.00 890,071.480 CRV | 0.4832% |
39 | Luno | CRV-MYR | $0.8362 0.0002557 Eth | $721,500.00 862,825.390 CRV | 0.4684% |
40 | Bitrue | CRV-USDT | $0.8341 0.0002550 Eth | $710,854.00 852,252.630 CRV | 0.4626% |
41 | Coinstore | CRV-USDT | $0.8339 0.0002550 Eth | $691,304.00 835,561.300 CRV | 0.4536% |
42 | Azbit | CRV-USDT | $0.8359 0.0002556 Eth | $676,687.00 817,517.575 CRV | 0.4438% |
43 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.8376 0.0002562 Eth | $561,775.00 673,798.108 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3658% |
44 | WEEX | CRV-USDT | $0.8316 0.0002543 Eth | $504,498.00 607,951.000 CRV | 0.3300% |
45 | Coinbase Exchange | CRV-EUR | $0.8362 0.0002558 Eth | $471,941.00 564,420.470 CRV | 0.3064% |
46 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.8376 0.0002560 Eth | $440,980.00 434,992.070 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.2361% |
47 | Ourbit | CRV-USDT | $0.8339 0.0002550 Eth | $434,315.00 524,556.990 CRV | 0.2847% |
48 | Binance | CRV-TRY | $0.8342 0.0002552 Eth | $415,724.00 500,628.900 CRV | 0.2718% |
49 | Toobit | CRV-USDT | $0.8325 0.0002547 Eth | $397,921.00 480,799.000 CRV | 0.2610% |
50 | BitDelta | CRV-USDT | $0.832 0.0002545 Eth | $389,860.00 473,002.000 CRV | 0.2568% |
51 | PointPay | CRV-USDT | $0.8316 0.0002543 Eth | $372,234.00 449,377.462 CRV | 0.2439% |
52 | AscendEX (BitMax) | CRV-USDT | $0.8365 0.0002559 Eth | $353,770.00 422,926.300 CRV | 0.2296% |
53 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.8376 0.0002562 Eth | $334,010.00 101.090 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0001% |
54 | Bitazza | CRV-USDT | $0.8323 0.0002545 Eth | $315,010.00 381,843.600 CRV | 0.2073% |
55 | BingX | CRV-USDT | $0.8326 0.0002547 Eth | $310,943.00 376,127.870 CRV | 0.2042% |
56 | Binance | CRV-BTC | $0.8317 0.0002544 Eth | $302,830.00 369,432.500 CRV | 0.2005% |
57 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.8338 0.0002550 Eth | $301,766.00 365,988.116 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1987% |
58 | BitMart | CRV-USDT | $0.8321 0.0002546 Eth | $282,419.00 339,396.060 CRV | 0.1842% |
59 | Hibt | CRV-USDT | $0.832 0.0002546 Eth | $221,320.00 267,019.319 CRV | 0.1449% |
60 | Nonkyc.io | CRV-USDT | $0.8316 0.0002543 Eth | $196,810.00 238,116.671 CRV | 0.1293% |
61 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.8347 0.0002551 Eth | $187,628.00 221,499.051 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1202% |
62 | P2B | CRV-USD | $0.832 0.0002546 Eth | $186,751.00 224,460.150 CRV | 0.1218% |
63 | KickEX | CRV-USDT | $0.8318 0.0002544 Eth | $179,034.00 215,245.830 CRV | 0.1168% |
64 | BloFin | CRV-USDT | $0.8312 0.0002542 Eth | $137,481.00 166,734.700 CRV | 0.0905% |
65 | Deepcoin | CRV-USDT | $0.8336 0.0002549 Eth | $131,425.00 161,700.000 CRV | 0.0878% |
66 | Coinbase Exchange | CRV-GBP | $0.8349 0.0002553 Eth | $118,541.00 141,986.810 CRV | 0.0771% |
67 | OKX | CRV-USDC | $0.832 0.0002545 Eth | $117,543.00 141,291.026 CRV | 0.0767% |
68 | BVOX | CRV-USDT | $0.8341 0.0002551 Eth | $116,163.00 140,579.400 CRV | 0.0763% |
69 | Tapbit | CRV-USDT | $0.8347 0.0002552 Eth | $106,074.00 128,623.800 CRV | 0.0698% |
70 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.8398 0.0002569 Eth | $103,144.00 122,520.299 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0665% |
71 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.8346 0.0002553 Eth | $100,508.00 134,829.440 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0732% |
72 | Bitstamp | CRV-USD | $0.8364 0.0002559 Eth | $96,251.00 115,078.263 CRV | 0.0625% |
73 | Bitso | CRV-USD | $0.8306 0.0002540 Eth | $85,303.00 102,698.373 CRV | 0.0557% |
74 | Kraken | CRV-EUR | $0.8357 0.0002557 Eth | $82,168.00 98,317.183 CRV | 0.0534% |
75 | Bit2Me | CRV-EUR | $0.8347 0.0002552 Eth | $78,987.00 96,222.733 CRV | 0.0522% |
76 | Pionex | CRV-USDT | $0.8351 0.0002550 Eth | $68,266.00 82,573.040 CRV | 0.0448% |
77 | Bitget | CRV-BTC | $0.8326 0.0002547 Eth | $56,273.00 68,277.647 CRV | 0.0371% |
78 | BigONE | CRV-USDT | $0.8336 0.0002550 Eth | $54,780.00 65,715.146 CRV | 0.0357% |
79 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $0.8376 0.0002560 Eth | $50,414.00 59,599.751 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0324% |
80 | Bitstamp | CRV-EUR | $0.836 0.0002558 Eth | $46,888.00 56,082.642 CRV | 0.0304% |
81 | Gemini | CRV-USD | $0.832 0.0002545 Eth | $46,540.00 55,937.666 CRV | 0.0304% |
82 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $0.8373 0.0002558 Eth | $42,121.00 50,834.729 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0276% |
83 | Icrypex | CRV-USDT | $0.8368 0.0002554 Eth | $41,976.00 50,163.492 CRV | 0.0272% |
84 | LATOKEN | CRV-USDT | $0.8325 0.0002546 Eth | $31,109.00 37,368.542 CRV | 0.0203% |
85 | CEX.IO | CRV-USD | $0.833 0.0002548 Eth | $26,755.00 32,888.520 CRV | 0.0179% |
86 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.8377 0.0002561 Eth | $25,344.00 30,441.264 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0165% |
87 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.8413 0.0002572 Eth | $25,340.00 30,526.537 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0166% |
88 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.8338 0.0002550 Eth | $22,602.00 27,411.110 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0149% |
89 | HashKey Global | CRV-USDT | $0.8346 0.0002552 Eth | $15,103.37 18,341.200 CRV | 0.0100% |
90 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $0.8332 0.0002548 Eth | $13,666.72 16,169.962 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0088% |
91 | Bitfinex | CRV-USD | $0.8469 0.0002591 Eth | $12,936.23 15,274.799 CRV | 0.0083% |
92 | bitcastle | CRV-USDT | $0.8316 0.0002544 Eth | $9,063.44 10,911.600 CRV | 0.0059% |
93 | Crypto.com Exchange | CRV-USDT | $0.8373 0.0002562 Eth | $6,552.04 7,825.500 CRV | 0.0042% |
94 | WOO X | CRV-USDT | $0.832 0.0002544 Eth | $5,744.94 6,905.276 CRV | 0.0037% |
95 | Coinmetro | CRV-USDT | $0.8345 0.0002552 Eth | $5,090.39 6,100.000 CRV | 0.0033% |
96 | TokoCrypto | CRV-USDT | $0.8317 0.0002543 Eth | $4,579.24 5,506.127 CRV | 0.0030% |
97 | MEXC | CRV-ETH | $0.8349 0.0002553 Eth | $3,316.97 3,972.719 CRV | 0.0022% |
98 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $0.8393 0.0002567 Eth | $2,569.13 3,080.580 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0017% |
99 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.8364 0.0002556 Eth | $519.52 620.543 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0003% |
100 | CEX.IO | CRV-USDT | $0.8321 0.0002546 Eth | $486.97 589.324 CRV | 0.0003% |
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
- No Contract Security Audit Submitted- Submit Audit Here
[{"name":"Transfer","inputs":[{"type":"address","name":"_from","indexed":true},{"type":"address","name":"_to","indexed":true},{"type":"uint256","name":"_value","indexed":false}],"anonymous":false,"type":"event"},{"name":"Approval","inputs":[{"type":"address","name":"_owner","indexed":true},{"type":"address","name":"_spender","indexed":true},{"type":"uint256","name":"_value","indexed":false}],"anonymous":false,"type":"event"},{"name":"UpdateMiningParameters","inputs":[{"type":"uint256","name":"time","indexed":false},{"type":"uint256","name":"rate","indexed":false},{"type":"uint256","name":"supply","indexed":false}],"anonymous":false,"type":"event"},{"name":"SetMinter","inputs":[{"type":"address","name":"minter","indexed":false}],"anonymous":false,"type":"event"},{"name":"SetAdmin","inputs":[{"type":"address","name":"admin","indexed":false}],"anonymous":false,"type":"event"},{"outputs":[],"inputs":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"},{"type":"uint256","name":"_decimals"}],"stateMutability":"nonpayable","type":"constructor"},{"name":"update_mining_parameters","outputs":[],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":148748},{"name":"start_epoch_time_write","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":149603},{"name":"future_epoch_time_write","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":149806},{"name":"available_supply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":4018},{"name":"mintable_in_timeframe","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"uint256","name":"start"},{"type":"uint256","name":"end"}],"stateMutability":"view","type":"function","gas":2216141},{"name":"set_minter","outputs":[],"inputs":[{"type":"address","name":"_minter"}],"stateMutability":"nonpayable","type":"function","gas":38698},{"name":"set_admin","outputs":[],"inputs":[{"type":"address","name":"_admin"}],"stateMutability":"nonpayable","type":"function","gas":37837},{"name":"totalSupply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1421},{"name":"allowance","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"_owner"},{"type":"address","name":"_spender"}],"stateMutability":"view","type":"function","gas":1759},{"name":"transfer","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":75139},{"name":"transferFrom","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":111433},{"name":"approve","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":39288},{"name":"mint","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":228030},{"name":"burn","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":74999},{"name":"set_name","outputs":[],"inputs":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"}],"stateMutability":"nonpayable","type":"function","gas":178270},{"name":"name","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":8063},{"name":"symbol","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":7116},{"name":"decimals","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1721},{"name":"balanceOf","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":1905},{"name":"minter","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1781},{"name":"admin","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1811},{"name":"mining_epoch","outputs":[{"type":"int128","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1841},{"name":"start_epoch_time","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1871},{"name":"rate","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1901}]
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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