Overview
Max Total Supply
2,186,917,608.412374925045546926 CRV
Holders
87,940 ( -0.009%)
Market
Price
$0.26 @ 0.000097 ETH (-0.83%)
Onchain Market Cap
$562,958,052.18
Circulating Supply Market Cap
$312,526,991.48
Other Info
Token Contract (WITH 18 Decimals)
Balance
1.009241222889843404 CRVValue
$0.26 ( ~9.81854786472389E-05 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | WhiteBIT | CRV-USDT | $0.2574 0.0000972 Eth | $17,016,398.00 66,121,049.011 CRV | 27.1250% |
2 | Binance | CRV-USDT | $0.2579 0.0000974 Eth | $11,541,540.00 44,437,940.000 CRV | 18.2299% |
3 | HTX | CRV-USDT | $0.258 0.0000974 Eth | $4,936,814.00 19,022,377.675 CRV | 7.8036% |
4 | LBank | CRV-USDT | $0.2574 0.0000972 Eth | $3,286,616.00 12,769,750.160 CRV | 5.2386% |
5 | OKX | CRV-USDT | $0.2577 0.0000973 Eth | $2,654,188.00 10,220,292.155 CRV | 4.1927% |
6 | Gate.io | CRV-USDT | $0.2577 0.0000973 Eth | $2,473,966.00 9,528,334.990 CRV | 3.9088% |
7 | Bybit | CRV-USDT | $0.2577 0.0000973 Eth | $1,881,304.00 7,248,117.570 CRV | 2.9734% |
8 | Trubit | CRV-USDT | $0.2578 0.0000973 Eth | $1,474,526.00 5,687,193.600 CRV | 2.3331% |
9 | Coinbase Exchange | CRV-USD | $0.2578 0.0000973 Eth | $1,383,258.00 5,365,626.230 CRV | 2.2012% |
10 | Biconomy.com | CRV-USDT | $0.258 0.0000973 Eth | $1,311,643.00 5,058,948.000 CRV | 2.0753% |
11 | Bitunix | CRV-USDT | $0.2577 0.0000973 Eth | $1,156,792.00 4,489,317.100 CRV | 1.8417% |
12 | Hotcoin | CRV-USDT | $0.2577 0.0000973 Eth | $1,043,078.00 4,047,479.700 CRV | 1.6604% |
13 | XT.COM | CRV-USDT | $0.2574 0.0000971 Eth | $958,100.00 3,688,356.800 CRV | 1.5131% |
14 | Phemex | CRV-USDT | $0.2576 0.0000973 Eth | $841,072.00 3,265,027.870 CRV | 1.3394% |
15 | Slex | CRV-USDT | $0.2578 0.0000972 Eth | $724,270.00 2,788,036.300 CRV | 1.1437% |
16 | DigiFinex | CRV-USDT | $0.2577 0.0000973 Eth | $607,733.00 2,357,957.900 CRV | 0.9673% |
17 | CoinW | CRV-USDT | $0.258 0.0000974 Eth | $563,676.00 2,184,522.742 CRV | 0.8962% |
18 | FameEX | CRV-USDT | $0.2577 0.0000973 Eth | $458,398.00 1,765,656.424 CRV | 0.7243% |
19 | Niza Global | CRV-USD | $0.257 0.0000970 Eth | $445,627.00 1,719,373.897 CRV | 0.7053% |
20 | Kraken | CRV-USD | $0.257 0.0000970 Eth | $443,142.00 1,724,287.106 CRV | 0.7074% |
21 | BYDFi | CRV-USDT | $0.2571 0.0000971 Eth | $400,981.00 1,559,637.200 CRV | 0.6398% |
22 | Dex-Trade | CRV-USDT | $0.257 0.0000968 Eth | $381,310.00 1,483,424.200 CRV | 0.6085% |
23 | AscendEX (BitMax) | CRV-USDT | $0.257 0.0000970 Eth | $364,850.00 1,419,512.200 CRV | 0.5823% |
24 | Bitrue | CRV-XRP | $0.2579 0.0000974 Eth | $352,758.00 1,367,605.230 CRV | 0.5610% |
25 | BTSE | CRV-USDT | $0.2569 0.0000969 Eth | $340,766.00 1,326,343.698 CRV | 0.5441% |
26 | Coinstore | CRV-USDT | $0.2576 0.0000973 Eth | $324,082.00 1,248,653.600 CRV | 0.5122% |
27 | Bitrue | CRV-USDT | $0.2573 0.0000971 Eth | $321,795.00 1,250,593.480 CRV | 0.5130% |
28 | Binance | CRV-USDC | $0.258 0.0000974 Eth | $306,866.00 1,181,712.600 CRV | 0.4848% |
29 | Bitrue | CRV-USDC | $0.2572 0.0000970 Eth | $295,336.00 1,148,359.510 CRV | 0.4711% |
30 | Bitazza | CRV-USDT | $0.2581 0.0000975 Eth | $270,030.00 1,042,563.400 CRV | 0.4277% |
31 | Toobit | CRV-USDT | $0.2579 0.0000974 Eth | $265,530.00 1,023,185.200 CRV | 0.4197% |
32 | FMCPAY | CRV-USDT | $0.2577 0.0000973 Eth | $250,829.00 967,500.000 CRV | 0.3969% |
33 | KuCoin | CRV-USDT | $0.2578 0.0000973 Eth | $233,377.00 905,389.002 CRV | 0.3714% |
34 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2581 0.0000974 Eth | $229,631.00 230,630.407 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.0946% |
35 | Ourbit | CRV-USDT | $0.2577 0.0000973 Eth | $210,442.00 810,700.480 CRV | 0.3326% |
36 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2579 0.0000973 Eth | $193,778.00 752,943.861 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.3089% |
37 | Bitkub | CRV-THB | $0.2576 0.0000972 Eth | $190,669.00 740,296.132 CRV | 0.3037% |
38 | PointPay | CRV-USDT | $0.2575 0.0000972 Eth | $189,231.00 728,515.920 CRV | 0.2989% |
39 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2574 0.0000969 Eth | $167,360.00 649,163.491 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.2663% |
40 | BingX | CRV-USDT | $0.2577 0.0000973 Eth | $158,914.00 612,351.239 CRV | 0.2512% |
41 | MEXC | CRV-USDT | $0.2577 0.0000973 Eth | $152,935.00 593,437.084 CRV | 0.2434% |
42 | BitMart | CRV-USDT | $0.2577 0.0000973 Eth | $142,074.00 551,337.920 CRV | 0.2262% |
43 | Bitget | CRV-USDT | $0.2574 0.0000972 Eth | $128,258.00 494,688.943 CRV | 0.2029% |
44 | CoinEx | CRV-USDT | $0.2578 0.0000973 Eth | $111,503.00 429,520.226 CRV | 0.1762% |
45 | BitDelta | CRV-USDT | $0.2577 0.0000973 Eth | $111,260.00 429,342.000 CRV | 0.1761% |
46 | P2B | CRV-USD | $0.258 0.0000974 Eth | $105,621.00 409,385.360 CRV | 0.1679% |
47 | Tapbit | CRV-USDT | $0.2577 0.0000973 Eth | $100,345.00 386,749.200 CRV | 0.1587% |
48 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2566 0.0000969 Eth | $97,039.00 374,734.960 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1537% |
49 | Nominex | CRV-USDT | $0.2576 0.0000971 Eth | $96,439.00 374,334.174 CRV | 0.1536% |
50 | ProBit Global | CRV-USDT | $0.2576 0.0000973 Eth | $95,021.00 368,860.636 CRV | 0.1513% |
51 | LocalTrade | CRV-USDT | $0.2577 0.0000973 Eth | $76,269.00 295,987.253 CRV | 0.1214% |
52 | Binance | CRV-BTC | $0.2574 0.0000972 Eth | $66,786.00 256,340.500 CRV | 0.1052% |
53 | Bitvavo | CRV-EUR | $0.2592 0.0000978 Eth | $63,247.00 244,044.943 CRV | 0.1001% |
54 | WhiteBIT | CRV-BTC | $0.2572 0.0000971 Eth | $61,329.00 238,480.500 CRV | 0.0978% |
55 | Bithumb | CRV-KRW | $0.259 0.0000978 Eth | $59,692.00 230,504.871 CRV | 0.0946% |
56 | Gemini | CRV-USD | $0.2576 0.0000972 Eth | $57,943.00 224,933.643 CRV | 0.0923% |
57 | BloFin | CRV-USDT | $0.258 0.0000974 Eth | $57,615.00 222,183.300 CRV | 0.0911% |
58 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2573 0.0000972 Eth | $54,534.00 98,978.451 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0406% |
59 | Coinbase Exchange | CRV-EUR | $0.2576 0.0000972 Eth | $53,397.00 207,269.080 CRV | 0.0850% |
60 | Nonkyc.io | CRV-USDT | $0.2572 0.0000971 Eth | $53,370.00 205,828.361 CRV | 0.0844% |
61 | WhiteBIT | CRV-TRY | $0.2575 0.0000972 Eth | $50,147.00 194,724.200 CRV | 0.0799% |
62 | Bitget | CRV-BTC | $0.2574 0.0000972 Eth | $48,423.00 186,749.385 CRV | 0.0766% |
63 | OKX | CRV-USDC | $0.2578 0.0000973 Eth | $47,249.00 181,745.572 CRV | 0.0746% |
64 | Luno | CRV-MYR | $0.257 0.0000970 Eth | $44,970.00 174,986.760 CRV | 0.0718% |
65 | BigONE | CRV-USDT | $0.2579 0.0000974 Eth | $41,612.00 161,371.530 CRV | 0.0662% |
66 | Deepcoin | CRV-USDT | $0.2569 0.0000970 Eth | $40,535.00 162,051.400 CRV | 0.0665% |
67 | Crypto.com Exchange | CRV-USDT | $0.2574 0.0000972 Eth | $40,492.00 157,303.400 CRV | 0.0645% |
68 | CoinTR | CRV-USDT | $0.2581 0.0000974 Eth | $38,414.00 148,237.000 CRV | 0.0608% |
69 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2576 0.0000972 Eth | $38,094.00 147,901.717 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0607% |
70 | Binance | CRV-TRY | $0.2596 0.0000980 Eth | $34,960.00 134,139.400 CRV | 0.0550% |
71 | Niza Global | CRV-EUR | $0.2582 0.0000972 Eth | $34,088.00 130,781.769 CRV | 0.0537% |
72 | WEEX | CRV-USDT | $0.2578 0.0000973 Eth | $33,567.00 129,362.000 CRV | 0.0531% |
73 | Kraken | CRV-EUR | $0.2582 0.0000975 Eth | $33,201.00 128,603.999 CRV | 0.0528% |
74 | Bit2Me | CRV-EUR | $0.2582 0.0000974 Eth | $33,094.00 128,166.134 CRV | 0.0526% |
75 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2581 0.0000974 Eth | $28,082.00 16,683.650 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0068% |
76 | Pionex | CRV-USDT | $0.2574 0.0000971 Eth | $26,274.00 100,951.787 CRV | 0.0414% |
77 | Crypto.com Exchange | CRV-USD | $0.2578 0.0000973 Eth | $22,682.00 87,982.900 CRV | 0.0361% |
78 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $0.258 0.0000974 Eth | $21,086.00 81,587.175 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0335% |
79 | LATOKEN | CRV-USDT | $0.2575 0.0000972 Eth | $19,758.23 76,728.834 CRV | 0.0315% |
80 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2582 0.0000975 Eth | $19,434.41 75,117.834 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0308% |
81 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2575 0.0000972 Eth | $19,328.87 75,068.535 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0308% |
82 | LATOKEN | CRV-BTC | $0.2573 0.0000972 Eth | $14,452.72 56,163.159 CRV | 0.0230% |
83 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2557 0.0000966 Eth | $14,069.89 8,231.416 0X4200000000000000000000000000000000000042 | 0.0034% |
84 | Uniswap V3 (Ethereum) | 0X5A98FCBEA516CF06857215779FD812CA3BEF1B32-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2554 0.0000964 Eth | $13,448.27 12,129.837 0X5A98FCBEA516CF06857215779FD812CA3BEF1B32 | 0.0050% |
85 | Coinbase Exchange | CRV-GBP | $0.2577 0.0000973 Eth | $13,241.42 51,390.420 CRV | 0.0211% |
86 | Bitfinex | CRV-USDT | $0.2576 0.0000973 Eth | $12,664.40 49,154.668 CRV | 0.0202% |
87 | Azbit | CRV-USDT | $0.2572 0.0000971 Eth | $12,124.54 46,813.108 CRV | 0.0192% |
88 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $0.2576 0.0000972 Eth | $11,192.42 43,379.808 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0178% |
89 | Bitstamp | CRV-USD | $0.2574 0.0000972 Eth | $9,722.79 37,768.665 CRV | 0.0155% |
90 | Bitfinex | CRV-USD | $0.2582 0.0000975 Eth | $9,722.75 37,660.281 CRV | 0.0154% |
91 | TokoCrypto | CRV-USDT | $0.2571 0.0000970 Eth | $7,952.02 30,934.985 CRV | 0.0127% |
92 | MEXC | CRV-ETH | $0.2575 0.0000972 Eth | $7,353.42 28,560.089 CRV | 0.0117% |
93 | Bitso | CRV-USD | $0.2579 0.0000974 Eth | $7,336.07 28,446.490 CRV | 0.0117% |
94 | CEX.IO | CRV-USD | $0.258 0.0000974 Eth | $7,328.92 28,364.440 CRV | 0.0116% |
95 | HashKey Global | CRV-USDT | $0.2583 0.0000975 Eth | $5,851.97 22,626.300 CRV | 0.0093% |
96 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.2582 0.0000975 Eth | $5,592.56 21,340.483 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0088% |
97 | WOO X | CRV-USDT | $0.2575 0.0000972 Eth | $938.81 3,645.508 CRV | 0.0015% |
98 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | $0.2589 0.0000978 Eth | $322.73 1,244.043 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0005% |
99 | CEX.IO | CRV-USDC | $0.2589 0.0000977 Eth | $30.70 119.035 CRV | 0.0000% |
100 | CEX.IO | CRV-USDT | $0.2576 0.0000973 Eth | $22.59 87.710 CRV | 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
- 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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