Overview
Max Total Supply
2,176,454,287.491600640600294299 CRV
Holders
88,109 ( 0.003%)
Market
Price
$0.26 @ 0.000108 ETH (-1.21%)
Onchain Market Cap
$557,041,629.98
Circulating Supply Market Cap
$307,579,623.95
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $0.2547 0.0001077 Eth | $20,429,191.00 80,189,042.200 CRV | 24.7925% |
2 | BloFin | CRV-USDT | $0.2556 0.0001083 Eth | $7,736,313.00 30,365,669.100 CRV | 9.3883% |
3 | HTX | CRV-USDT | $0.2548 0.0001077 Eth | $6,416,202.00 25,149,740.517 CRV | 7.7757% |
4 | Gate.io | CRV-USDT | $0.2552 0.0001078 Eth | $5,743,246.00 22,616,784.780 CRV | 6.9925% |
5 | OKX | CRV-USDT | $0.2548 0.0001077 Eth | $3,718,369.00 14,591,262.557 CRV | 4.5113% |
6 | Websea | CRV-USDT | $0.2556 0.0001079 Eth | $2,955,865.00 0.000 CRV | 0.0000% |
7 | LBank | CRV-USDT | $0.2557 0.0001080 Eth | $2,927,966.00 11,452,836.510 CRV | 3.5409% |
8 | Bybit | CRV-USDT | $0.2548 0.0001077 Eth | $2,807,216.00 10,999,576.980 CRV | 3.4008% |
9 | Coinbase Exchange | CRV-USD | $0.2554 0.0001079 Eth | $2,013,803.00 7,884,898.930 CRV | 2.4378% |
10 | Biconomy.com | CRV-USDT | $0.2552 0.0001078 Eth | $1,732,755.00 6,797,865.900 CRV | 2.1017% |
11 | Phemex | CRV-USDT | $0.2555 0.0001079 Eth | $1,573,609.00 6,159,845.590 CRV | 1.9045% |
12 | XT.COM | CRV-USDT | $0.2552 0.0001079 Eth | $1,556,634.00 6,110,622.900 CRV | 1.8893% |
13 | Trubit | CRV-USDT | $0.2557 0.0001080 Eth | $1,523,786.00 5,965,695.100 CRV | 1.8444% |
14 | BIT | CRV-USDT | $0.256 0.0001081 Eth | $1,466,225.00 5,727,989.086 CRV | 1.7710% |
15 | WhiteBIT | CRV-BTC | $0.2547 0.0001077 Eth | $1,424,599.00 5,592,614.700 CRV | 1.7291% |
16 | Slex | CRV-USDT | $0.2553 0.0001079 Eth | $1,274,095.00 5,003,891.900 CRV | 1.5471% |
17 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2552 0.0001079 Eth | $1,059,690.00 4,179,018.984 0XD533A949740BB3306D119CC777FA900BA034CD52 | 1.2920% |
18 | DigiFinex | CRV-USDT | $0.2547 0.0001077 Eth | $1,056,156.00 4,147,158.400 CRV | 1.2822% |
19 | Bitunix | CRV-USDT | $0.2546 0.0001076 Eth | $1,046,119.00 4,108,792.200 CRV | 1.2703% |
20 | CoinW | CRV-USDT | $0.2554 0.0001079 Eth | $965,611.00 3,780,115.272 CRV | 1.1687% |
21 | Bullish | CRV-USDC | $0.2556 0.0001080 Eth | $944,605.00 3,720,303.253 CRV | 1.1502% |
22 | FameEX | CRV-USDT | $0.2547 0.0001077 Eth | $815,091.00 3,199,567.168 CRV | 0.9892% |
23 | Hotcoin | CRV-USDT | $0.2547 0.0001077 Eth | $789,401.00 3,099,275.800 CRV | 0.9582% |
24 | KuCoin | CRV-USDT | $0.2554 0.0001079 Eth | $777,490.00 3,044,652.736 CRV | 0.9413% |
25 | BYDFi | CRV-USDT | $0.2548 0.0001077 Eth | $730,606.00 2,867,385.000 CRV | 0.8865% |
26 | Bitrue | CRV-XRP | $0.2547 0.0001076 Eth | $702,720.00 2,759,556.530 CRV | 0.8532% |
27 | Dex-Trade | CRV-USDT | $0.2546 0.0001076 Eth | $679,422.00 2,668,599.500 CRV | 0.8251% |
28 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2577 0.0001089 Eth | $611,262.00 2,412,293.444 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.7458% |
29 | Curve (Optimism) | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2557 0.0001080 Eth | $579,922.00 580,505.928 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.1795% |
30 | FMFW.io | CRV-USDT | $0.2554 0.0001079 Eth | $525,214.00 2,056,565.000 CRV | 0.6358% |
31 | HitBTC | CRV-USDT | $0.2554 0.0001079 Eth | $524,736.00 2,055,933.600 CRV | 0.6356% |
32 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2551 0.0001078 Eth | $496,854.00 1,989,413.916 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.6151% |
33 | Coinstore | CRV-USDT | $0.2549 0.0001077 Eth | $462,653.00 1,817,474.100 CRV | 0.5619% |
34 | Bitrue | CRV-USDC | $0.2558 0.0001081 Eth | $448,136.00 1,751,821.760 CRV | 0.5416% |
35 | Toobit | CRV-USDT | $0.2551 0.0001078 Eth | $412,305.00 1,617,784.100 CRV | 0.5002% |
36 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2561 0.0001083 Eth | $411,302.00 409,502.729 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1266% |
37 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2561 0.0001083 Eth | $381,856.00 158.295 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0000% |
38 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2567 0.0001084 Eth | $365,676.00 1,453,216.724 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.4493% |
39 | AscendEX (BitMax) | CRV-USDT | $0.2557 0.0001080 Eth | $358,446.00 1,402,042.800 CRV | 0.4335% |
40 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $0.256 0.0001081 Eth | $341,979.00 1,343,068.195 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4152% |
41 | Binance | CRV-USDC | $0.2564 0.0001083 Eth | $325,786.00 1,281,212.200 CRV | 0.3961% |
42 | PointPay | CRV-USDT | $0.2552 0.0001078 Eth | $309,285.00 1,215,402.647 CRV | 0.3758% |
43 | Bitvavo | CRV-EUR | $0.2549 0.0001078 Eth | $299,894.00 1,176,391.877 CRV | 0.3637% |
44 | Bitazza | CRV-USDT | $0.2545 0.0001075 Eth | $278,854.00 1,093,246.500 CRV | 0.3380% |
45 | FMCPAY | CRV-USDT | $0.2547 0.0001077 Eth | $277,013.00 1,086,544.000 CRV | 0.3359% |
46 | BitMart | CRV-USDT | $0.2556 0.0001079 Eth | $231,262.00 904,946.780 CRV | 0.2798% |
47 | Bitkub | CRV-THB | $0.2557 0.0001080 Eth | $223,910.00 875,813.947 CRV | 0.2708% |
48 | WhiteBIT | CRV-TRY | $0.2584 0.0001091 Eth | $221,724.00 858,227.600 CRV | 0.2653% |
49 | Bitget | CRV-USDT | $0.2546 0.0001076 Eth | $214,269.00 840,762.093 CRV | 0.2599% |
50 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2559 0.0001081 Eth | $196,523.00 196,163.104 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0606% |
51 | Kraken | CRV-USD | $0.255 0.0001078 Eth | $189,843.00 744,483.313 CRV | 0.2302% |
52 | Tapbit | CRV-USDT | $0.2549 0.0001078 Eth | $182,980.00 718,435.800 CRV | 0.2221% |
53 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2557 0.0001080 Eth | $167,875.00 104,344.040 0X4200000000000000000000000000000000000042 | 0.0323% |
54 | Globe | CRV-USDT | $0.2546 0.0001076 Eth | $156,947.00 615,725.466 CRV | 0.1904% |
55 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2547 0.0001080 Eth | $155,820.00 609,196.400 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1883% |
56 | P2B | CRV-USDT | $0.255 0.0001077 Eth | $151,405.00 593,655.100 CRV | 0.1835% |
57 | P2B | CRV-USD | $0.255 0.0001077 Eth | $146,129.00 573,055.650 CRV | 0.1772% |
58 | Binance | CRV-BTC | $0.2555 0.0001080 Eth | $145,091.00 569,386.800 CRV | 0.1760% |
59 | LocalTrade | CRV-USDT | $0.2549 0.0001078 Eth | $139,634.00 547,800.273 CRV | 0.1694% |
60 | Coinbase Exchange | CRV-EUR | $0.2563 0.0001082 Eth | $136,975.00 534,488.560 CRV | 0.1653% |
61 | BitDelta | CRV-USDT | $0.2547 0.0001077 Eth | $131,188.00 514,550.100 CRV | 0.1591% |
62 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $0.2554 0.0001080 Eth | $115,926.00 458,690.296 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1418% |
63 | BTSE | CRV-USDT | $0.2549 0.0001077 Eth | $111,555.00 437,653.834 CRV | 0.1353% |
64 | Nominex | CRV-USDT | $0.2556 0.0001080 Eth | $104,107.00 407,273.529 CRV | 0.1259% |
65 | MEXC | CRV-USDT | $0.2554 0.0001079 Eth | $99,999.00 391,598.914 CRV | 0.1211% |
66 | Fairdesk | CRV-USDT | $0.2558 0.0001081 Eth | $97,653.00 381,696.000 CRV | 0.1180% |
67 | Kraken | CRV-EUR | $0.255 0.0001078 Eth | $96,551.00 378,577.208 CRV | 0.1170% |
68 | Bit2Me | CRV-EUR | $0.255 0.0001078 Eth | $95,030.00 371,005.664 CRV | 0.1147% |
69 | Nonkyc.io | CRV-USDT | $0.2547 0.0001077 Eth | $82,521.00 323,699.336 CRV | 0.1001% |
70 | CoinEx | CRV-USDT | $0.2559 0.0001081 Eth | $76,109.00 293,981.791 CRV | 0.0909% |
71 | Binance | CRV-TRY | $0.2563 0.0001083 Eth | $75,472.00 295,618.500 CRV | 0.0914% |
72 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2559 0.0001081 Eth | $70,729.00 131,153.838 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0405% |
73 | Coinbase Exchange | CRV-GBP | $0.2547 0.0001076 Eth | $69,861.00 274,247.530 CRV | 0.0848% |
74 | WEEX | CRV-USDT | $0.2547 0.0001077 Eth | $67,840.00 266,015.000 CRV | 0.0822% |
75 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2566 0.0001085 Eth | $65,436.00 258,780.633 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0800% |
76 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2565 0.0001084 Eth | $62,080.00 244,686.300 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0757% |
77 | Icrypex | CRV-TRY | $0.2559 0.0001082 Eth | $57,617.00 225,196.256 CRV | 0.0696% |
78 | OKX | CRV-USDC | $0.2554 0.0001080 Eth | $49,678.00 194,045.023 CRV | 0.0600% |
79 | Gemini | CRV-USD | $0.2565 0.0001085 Eth | $48,767.00 190,125.509 CRV | 0.0588% |
80 | Pionex | CRV-USDT | $0.2557 0.0001080 Eth | $40,676.00 159,655.109 CRV | 0.0494% |
81 | Luno | CRV-MYR | $0.2572 0.0001087 Eth | $34,759.00 135,126.390 CRV | 0.0418% |
82 | MEXC | CRV-ETH | $0.2556 0.0001080 Eth | $33,028.00 129,200.747 CRV | 0.0399% |
83 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2565 0.0001083 Eth | $32,698.00 130,014.675 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0402% |
84 | LATOKEN | CRV-USDT | $0.2561 0.0001082 Eth | $26,242.00 102,482.456 CRV | 0.0317% |
85 | TokoCrypto | CRV-USDT | $0.2565 0.0001084 Eth | $22,297.00 86,911.797 CRV | 0.0269% |
86 | LATOKEN | CRV-BTC | $0.2551 0.0001077 Eth | $21,982.00 86,179.096 CRV | 0.0266% |
87 | HashKey Global | CRV-USDT | $0.2558 0.0001081 Eth | $19,275.01 76,230.100 CRV | 0.0236% |
88 | WOO X | CRV-USDT | $0.2552 0.0001078 Eth | $14,294.65 56,022.323 CRV | 0.0173% |
89 | Bitso | CRV-USD | $0.2539 0.0001072 Eth | $12,788.69 50,374.961 CRV | 0.0156% |
90 | Azbit | CRV-USDT | $0.2558 0.0001081 Eth | $12,049.03 47,199.046 CRV | 0.0146% |
91 | Bitfinex | CRV-USD | $0.2554 0.0001080 Eth | $7,193.09 28,161.831 CRV | 0.0087% |
92 | XT.COM | CRV-BTC | $0.2543 0.0001075 Eth | $6,098.36 44,646.200 CRV | 0.0138% |
93 | Curve (Ethereum) | 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.256 0.0001082 Eth | $5,794.74 22,902.094 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | 0.0071% |
94 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2553 0.0001079 Eth | $5,130.25 20,327.897 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0063% |
95 | FMFW.io | CRV-BTC | $0.2552 0.0001078 Eth | $3,450.45 13,521.600 CRV | 0.0042% |
96 | Gate.io | CRV-USDC | $0.2554 0.0001080 Eth | $275.40 1,095.310 CRV | 0.0003% |
97 | CEX.IO | CRV-USDT | $0.2553 0.0001079 Eth | $223.84 884.355 CRV | 0.0003% |
98 | Coinmetro | CRV-USDC | $0.256 0.0001082 Eth | $0.00 0.000 CRV | 0.0000% |
99 | Coinmetro | CRV-EUR | $0.2556 0.0001080 Eth | $0.00 0.000 CRV | 0.0000% |
100 | Coinmetro | CRV-USD | $0.2556 0.0001080 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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