Overview
Max Total Supply
2,177,218,536.406947522066539125 CRV
Holders
88,119 ( 0.009%)
Market
Price
$0.25 @ 0.000105 ETH (-1.84%)
Onchain Market Cap
$549,967,576.29
Circulating Supply Market Cap
$304,008,782.81
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | WhiteBIT | CRV-USDT | $0.2529 0.0001048 Eth | $11,850,736.00 46,864,846.192 CRV | 30.1088% |
2 | HTX | CRV-USDT | $0.2535 0.0001050 Eth | $4,095,671.00 15,946,543.187 CRV | 10.2450% |
3 | BloFin | CRV-USDT | $0.253 0.0001049 Eth | $2,717,567.00 10,592,529.700 CRV | 6.8053% |
4 | Bybit | CRV-USDT | $0.2534 0.0001050 Eth | $1,787,812.00 6,975,053.770 CRV | 4.4812% |
5 | OKX | CRV-USDT | $0.253 0.0001048 Eth | $1,642,769.00 6,393,593.134 CRV | 4.1076% |
6 | Trubit | CRV-USDT | $0.2529 0.0001049 Eth | $1,473,064.00 5,743,651.200 CRV | 3.6901% |
7 | Websea | CRV-USDT | $0.2527 0.0001048 Eth | $1,274,682.00 0.000 CRV | 0.0000% |
8 | Gate.io | CRV-USDT | $0.2535 0.0001050 Eth | $1,250,701.00 4,871,507.350 CRV | 3.1297% |
9 | Biconomy.com | CRV-USDT | $0.2528 0.0001048 Eth | $1,186,199.00 4,623,316.500 CRV | 2.9703% |
10 | LBank | CRV-USDT | $0.2527 0.0001048 Eth | $1,087,995.00 4,305,802.460 CRV | 2.7663% |
11 | BIT | CRV-USDT | $0.2531 0.0001049 Eth | $783,576.00 3,096,393.420 CRV | 1.9893% |
12 | Coinbase Exchange | CRV-USD | $0.2524 0.0001047 Eth | $738,781.00 2,927,022.710 CRV | 1.8805% |
13 | Phemex | CRV-USDT | $0.2529 0.0001049 Eth | $674,956.00 2,669,272.860 CRV | 1.7149% |
14 | XT.COM | CRV-USDT | $0.2529 0.0001049 Eth | $617,285.00 2,404,258.300 CRV | 1.5446% |
15 | Slex | CRV-USDT | $0.2526 0.0001048 Eth | $544,177.00 2,119,896.200 CRV | 1.3619% |
16 | Bullish | CRV-USDC | $0.2528 0.0001048 Eth | $539,247.00 2,107,474.314 CRV | 1.3540% |
17 | DigiFinex | CRV-USDT | $0.2534 0.0001050 Eth | $444,245.00 1,753,158.800 CRV | 1.1263% |
18 | Hotcoin | CRV-USDT | $0.2528 0.0001048 Eth | $426,167.00 1,685,735.700 CRV | 1.0830% |
19 | Bitunix | CRV-USDT | $0.2534 0.0001050 Eth | $396,614.00 1,564,767.200 CRV | 1.0053% |
20 | CoinW | CRV-USDT | $0.2531 0.0001049 Eth | $396,360.00 1,566,244.023 CRV | 1.0062% |
21 | AscendEX (BitMax) | CRV-USDT | $0.2536 0.0001051 Eth | $356,485.00 1,405,893.500 CRV | 0.9032% |
22 | FameEX | CRV-USDT | $0.2527 0.0001048 Eth | $340,953.00 1,328,216.656 CRV | 0.8533% |
23 | KuCoin | CRV-USDT | $0.2528 0.0001048 Eth | $327,650.00 1,296,236.452 CRV | 0.8328% |
24 | BYDFi | CRV-USDT | $0.2528 0.0001048 Eth | $314,190.00 1,242,803.200 CRV | 0.7985% |
25 | HitBTC | CRV-USDT | $0.2526 0.0001047 Eth | $304,658.00 1,188,528.700 CRV | 0.7636% |
26 | FMFW.io | CRV-USDT | $0.2533 0.0001050 Eth | $300,926.00 1,187,836.300 CRV | 0.7631% |
27 | Bitrue | CRV-XRP | $0.2528 0.0001049 Eth | $293,088.00 1,159,144.850 CRV | 0.7447% |
28 | Dex-Trade | CRV-USDT | $0.253 0.0001049 Eth | $286,279.00 1,131,737.400 CRV | 0.7271% |
29 | Bitazza | CRV-USDT | $0.2519 0.0001045 Eth | $282,254.00 1,100,544.800 CRV | 0.7071% |
30 | Bitrue | CRV-USDC | $0.2529 0.0001049 Eth | $272,788.00 1,078,712.270 CRV | 0.6930% |
31 | Coinstore | CRV-USDT | $0.2531 0.0001049 Eth | $237,110.00 924,151.800 CRV | 0.5937% |
32 | WhiteBIT | CRV-BTC | $0.2526 0.0001047 Eth | $222,065.00 878,999.800 CRV | 0.5647% |
33 | Toobit | CRV-USDT | $0.2529 0.0001049 Eth | $210,917.00 821,512.600 CRV | 0.5278% |
34 | FMCPAY | CRV-USDT | $0.2528 0.0001048 Eth | $186,653.00 725,724.180 CRV | 0.4662% |
35 | Binance | CRV-USDC | $0.2527 0.0001047 Eth | $185,854.00 723,211.000 CRV | 0.4646% |
36 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2523 0.0001046 Eth | $183,015.00 77.053 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0000% |
37 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2523 0.0001046 Eth | $182,647.00 185,775.074 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1194% |
38 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2509 0.0001041 Eth | $162,642.00 638,230.563 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4100% |
39 | PointPay | CRV-USDT | $0.2528 0.0001048 Eth | $141,322.00 550,588.794 CRV | 0.3537% |
40 | Kraken | CRV-USD | $0.253 0.0001049 Eth | $136,282.00 538,663.519 CRV | 0.3461% |
41 | Bitkub | CRV-THB | $0.2514 0.0001043 Eth | $127,862.00 508,615.705 CRV | 0.3268% |
42 | Bitvavo | CRV-EUR | $0.2527 0.0001048 Eth | $123,309.00 488,056.996 CRV | 0.3136% |
43 | BitMart | CRV-USDT | $0.2528 0.0001048 Eth | $122,127.00 483,151.220 CRV | 0.3104% |
44 | Bitget | CRV-USDT | $0.2533 0.0001050 Eth | $118,585.00 465,106.076 CRV | 0.2988% |
45 | CoinEx | CRV-USDT | $0.2531 0.0001049 Eth | $113,117.00 440,577.027 CRV | 0.2831% |
46 | BitDelta | CRV-USDT | $0.2525 0.0001048 Eth | $102,144.00 398,156.400 CRV | 0.2558% |
47 | Tapbit | CRV-USDT | $0.253 0.0001048 Eth | $101,942.00 397,039.900 CRV | 0.2551% |
48 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $0.2536 0.0001051 Eth | $101,877.00 401,652.007 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.2580% |
49 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2522 0.0001046 Eth | $97,281.00 380,382.190 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.2444% |
50 | Binance | CRV-BTC | $0.2536 0.0001051 Eth | $86,991.00 340,317.400 CRV | 0.2186% |
51 | Binance | CRV-TRY | $0.2549 0.0001056 Eth | $85,465.00 330,615.100 CRV | 0.2124% |
52 | WhiteBIT | CRV-TRY | $0.254 0.0001053 Eth | $74,974.00 295,200.100 CRV | 0.1897% |
53 | P2B | CRV-USD | $0.252 0.0001044 Eth | $71,746.00 284,708.330 CRV | 0.1829% |
54 | BTSE | CRV-USDT | $0.2525 0.0001047 Eth | $67,800.00 268,539.734 CRV | 0.1725% |
55 | P2B | CRV-USDT | $0.253 0.0001048 Eth | $65,851.00 260,309.900 CRV | 0.1672% |
56 | Globe | CRV-USDT | $0.2527 0.0001047 Eth | $65,505.00 255,512.585 CRV | 0.1642% |
57 | LocalTrade | CRV-USDT | $0.2529 0.0001048 Eth | $56,464.00 223,293.070 CRV | 0.1435% |
58 | Bitget | CRV-BTC | $0.253 0.0001049 Eth | $53,572.00 208,993.481 CRV | 0.1343% |
59 | Icrypex | CRV-TRY | $0.2548 0.0001056 Eth | $50,782.00 199,303.641 CRV | 0.1280% |
60 | Fairdesk | CRV-USDT | $0.2527 0.0001049 Eth | $47,515.00 188,047.000 CRV | 0.1208% |
61 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.253 0.0001051 Eth | $45,880.00 178,685.930 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1148% |
62 | MEXC | CRV-USDT | $0.2529 0.0001049 Eth | $45,756.00 180,939.055 CRV | 0.1162% |
63 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2531 0.0001050 Eth | $41,663.00 75,643.742 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0486% |
64 | Deepcoin | CRV-USDT | $0.2531 0.0001049 Eth | $40,391.00 162,003.200 CRV | 0.1041% |
65 | Bithumb | CRV-KRW | $0.2524 0.0001046 Eth | $38,692.00 153,275.631 CRV | 0.0985% |
66 | Nonkyc.io | CRV-USDT | $0.2535 0.0001051 Eth | $38,639.00 150,596.799 CRV | 0.0968% |
67 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2528 0.0001048 Eth | $37,359.00 147,954.685 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0951% |
68 | Coinbase Exchange | CRV-EUR | $0.2517 0.0001044 Eth | $34,650.00 137,660.640 CRV | 0.0884% |
69 | WEEX | CRV-USDT | $0.2526 0.0001048 Eth | $33,564.00 130,933.000 CRV | 0.0841% |
70 | KickEX | CRV-USDT | $0.2536 0.0001051 Eth | $33,367.00 131,574.673 CRV | 0.0845% |
71 | Gemini | CRV-USD | $0.2533 0.0001050 Eth | $31,953.00 126,145.307 CRV | 0.0810% |
72 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2521 0.0001046 Eth | $21,804.00 85,725.891 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0551% |
73 | OKX | CRV-USDC | $0.2533 0.0001050 Eth | $19,805.20 76,865.734 CRV | 0.0494% |
74 | Pionex | CRV-USDT | $0.2527 0.0001049 Eth | $19,401.61 75,547.668 CRV | 0.0485% |
75 | Crypto.com Exchange | CRV-USD | $0.2529 0.0001048 Eth | $17,978.79 71,090.500 CRV | 0.0457% |
76 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2522 0.0001045 Eth | $16,568.93 65,359.074 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0420% |
77 | LATOKEN | CRV-USDT | $0.253 0.0001049 Eth | $15,675.38 61,962.890 CRV | 0.0398% |
78 | LATOKEN | CRV-BTC | $0.2529 0.0001049 Eth | $15,571.59 61,575.729 CRV | 0.0396% |
79 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2516 0.0001043 Eth | $14,907.70 58,732.872 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0377% |
80 | Bitfinex | CRV-USD | $0.2534 0.0001050 Eth | $14,298.12 56,427.310 CRV | 0.0363% |
81 | Azbit | CRV-USDT | $0.2527 0.0001047 Eth | $12,762.14 49,738.028 CRV | 0.0320% |
82 | Kraken | CRV-EUR | $0.2515 0.0001042 Eth | $12,136.56 48,259.050 CRV | 0.0310% |
83 | Luno | CRV-MYR | $0.2547 0.0001055 Eth | $11,165.34 43,842.700 CRV | 0.0282% |
84 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2542 0.0001053 Eth | $7,243.30 28,266.806 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0182% |
85 | Bitlo | CRV-TRY | $0.2549 0.0001056 Eth | $7,225.75 28,031.477 CRV | 0.0180% |
86 | TokoCrypto | CRV-USDT | $0.2527 0.0001048 Eth | $6,631.95 26,247.774 CRV | 0.0169% |
87 | Curve (Ethereum) | 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2523 0.0001046 Eth | $6,618.47 26,546.960 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | 0.0171% |
88 | Bitso | CRV-USD | $0.253 0.0001048 Eth | $6,506.89 25,721.968 CRV | 0.0165% |
89 | Coinbase Exchange | CRV-GBP | $0.2526 0.0001048 Eth | $5,225.75 20,688.760 CRV | 0.0133% |
90 | WOO X | CRV-USDT | $0.2527 0.0001048 Eth | $4,223.44 16,714.513 CRV | 0.0107% |
91 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.2522 0.0001046 Eth | $2,160.82 8,467.775 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0054% |
92 | MEXC | CRV-ETH | $0.2526 0.0001048 Eth | $624.79 2,473.099 CRV | 0.0016% |
93 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | $0.2541 0.0001055 Eth | $366.68 1,432.034 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0009% |
94 | Uniswap V3 (Ethereum) | 0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2529 0.0001048 Eth | $277.17 1,164.342 0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | 0.0007% |
95 | Gate.io | CRV-USDC | $0.251 0.0001041 Eth | $47.55 185.540 CRV | 0.0001% |
96 | CEX.IO | CRV-USDC | $0.254 0.0001053 Eth | $22.17 85.712 CRV | 0.0001% |
97 | CEX.IO | CRV-USDT | $0.2531 0.0001049 Eth | $16.49 64.284 CRV | 0.0000% |
98 | Coinmetro | CRV-USDC | $0.2528 0.0001048 Eth | $0.00 0.000 CRV | 0.0000% |
99 | Coinmetro | CRV-USD | $0.2528 0.0001048 Eth | $0.00 0.000 CRV | 0.0000% |
100 | Coinmetro | CRV-EUR | $0.2527 0.0001048 Eth | $0.00 0.000 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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