Overview
Max Total Supply
2,155,359,521.015793565493506057 CRV
Holders
87,281 ( 0.013%)
Market
Price
$0.25 @ 0.000097 ETH (+0.36%)
Onchain Market Cap
$540,878,564.61
Circulating Supply Market Cap
$291,883,399.79
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.405792732258763297 CRVValue
$0.10 ( ~3.85091849333365E-05 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2497 0.0000961 Eth | $14,419,905.00 57,960,792.700 CRV | 19.5835% |
2 | ![]() | CRV-USDT | $0.2496 0.0000961 Eth | $8,898,144.00 35,737,533.801 CRV | 12.0748% |
3 | ![]() | CRV-USDT | $0.2498 0.0000961 Eth | $5,910,676.00 23,751,477.650 CRV | 8.0250% |
4 | ![]() | CRV-USDT | $0.2494 0.0000960 Eth | $5,355,212.00 21,563,595.931 CRV | 7.2858% |
5 | ![]() | CRV-USDT | $0.2504 0.0000963 Eth | $5,212,580.00 20,952,517.400 CRV | 7.0793% |
6 | ![]() | CRV-USDT | $0.2498 0.0000961 Eth | $4,807,846.00 19,246,948.844 CRV | 6.5031% |
7 | ![]() | CRV-USDT | $0.2506 0.0000964 Eth | $2,852,092.00 11,382,520.800 CRV | 3.8459% |
8 | ![]() | CRV-USD | $0.2513 0.0000967 Eth | $2,849,753.00 11,340,042.910 CRV | 3.8315% |
9 | ![]() | CRV-USDT | $0.2504 0.0000964 Eth | $2,720,431.00 10,946,676.920 CRV | 3.6986% |
10 | ![]() | CRV-USDT | $0.2498 0.0000962 Eth | $2,237,669.00 8,996,109.500 CRV | 3.0396% |
11 | ![]() | CRV-USDT | $0.2502 0.0000962 Eth | $2,145,705.00 0.000 CRV | 0.0000% |
12 | ![]() | CRV-USDT | $0.2508 0.0000965 Eth | $1,317,500.00 5,294,572.100 CRV | 1.7889% |
13 | ![]() | CRV-USDT | $0.2506 0.0000965 Eth | $1,306,407.00 5,212,615.200 CRV | 1.7612% |
14 | ![]() | CRV-USDT | $0.2506 0.0000964 Eth | $1,171,655.00 4,675,834.920 CRV | 1.5798% |
15 | ![]() | CRV-USDT | $0.251 0.0000965 Eth | $1,155,175.00 4,643,536.300 CRV | 1.5689% |
16 | ![]() | CRV-USDT | $0.2495 0.0000960 Eth | $1,014,722.00 4,067,059.500 CRV | 1.3742% |
17 | ![]() | CRV-USDT | $0.2505 0.0000964 Eth | $962,772.00 3,870,149.200 CRV | 1.3076% |
18 | ![]() | CRV-USDT | $0.2509 0.0000965 Eth | $812,388.00 3,238,393.800 CRV | 1.0942% |
19 | ![]() | CRV-USDT | $0.2507 0.0000964 Eth | $681,142.00 2,739,981.088 CRV | 0.9258% |
20 | ![]() | CRV-USDT | $0.2505 0.0000964 Eth | $634,689.00 2,533,717.282 CRV | 0.8561% |
21 | ![]() | CRV-USDT | $0.2499 0.0000962 Eth | $588,087.00 2,353,545.400 CRV | 0.7952% |
22 | ![]() | CRV-USDT | $0.2513 0.0000967 Eth | $575,378.00 2,311,251.728 CRV | 0.7809% |
23 | ![]() | CRV-USDT | $0.2501 0.0000963 Eth | $555,927.00 2,240,795.000 CRV | 0.7571% |
24 | ![]() | CRV-USDT | $0.2511 0.0000967 Eth | $530,429.00 2,112,298.200 CRV | 0.7137% |
25 | ![]() | CRV-USDT | $0.25 0.0000962 Eth | $516,545.00 2,066,204.800 CRV | 0.6981% |
26 | ![]() | CRV-XRP | $0.2511 0.0000966 Eth | $515,281.00 2,052,426.170 CRV | 0.6935% |
27 | ![]() | CRV-USDT | $0.2511 0.0000966 Eth | $470,361.00 1,873,564.194 CRV | 0.6330% |
28 | ![]() | CRV-USDC | $0.25 0.0000962 Eth | $422,195.00 1,688,847.080 CRV | 0.5706% |
29 | ![]() | CRV-USDT | $0.2498 0.0000962 Eth | $365,984.00 1,465,277.300 CRV | 0.4951% |
30 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2511 0.0000966 Eth | $344,972.00 1,400,608.997 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4732% |
31 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.251 0.0000966 Eth | $317,509.00 1,290,297.266 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.4360% |
32 | ![]() | CRV-TRY | $0.2523 0.0000971 Eth | $278,593.00 1,104,136.100 CRV | 0.3731% |
33 | ![]() | CRV-USDT | $0.2522 0.0000970 Eth | $270,050.00 1,085,318.800 CRV | 0.3667% |
34 | ![]() | CRV-TRY | $0.2526 0.0000971 Eth | $267,242.00 1,062,929.400 CRV | 0.3591% |
35 | ![]() | CRV-USDT | $0.2498 0.0000961 Eth | $247,931.00 996,575.767 CRV | 0.3367% |
36 | ![]() | CRV-USDT | $0.2496 0.0000961 Eth | $239,718.00 963,936.906 CRV | 0.3257% |
37 | ![]() | CRV-BTC | $0.2511 0.0000967 Eth | $189,641.00 764,594.800 CRV | 0.2583% |
38 | ![]() | CRV-USDT | $0.2498 0.0000962 Eth | $188,793.00 755,869.780 CRV | 0.2554% |
39 | ![]() | CRV-EUR | $0.2535 0.0000975 Eth | $166,079.00 655,124.030 CRV | 0.2213% |
40 | ![]() | CRV-USDC | $0.2512 0.0000967 Eth | $156,731.00 630,099.350 CRV | 0.2129% |
41 | ![]() | CRV-USDT | $0.2509 0.0000965 Eth | $154,777.00 616,943.679 CRV | 0.2084% |
42 | ![]() | CRV-USDT | $0.2506 0.0000964 Eth | $136,506.00 548,791.500 CRV | 0.1854% |
43 | ![]() | CRV-USDT | $0.2505 0.0000964 Eth | $132,572.00 533,229.000 CRV | 0.1802% |
44 | ![]() | CRV-USD | $0.25 0.0000962 Eth | $119,847.00 479,386.930 CRV | 0.1620% |
45 | ![]() | CRV-USDT | $0.2503 0.0000963 Eth | $119,020.00 492,486.628 CRV | 0.1664% |
46 | ![]() | CRV-USD | $0.251 0.0000966 Eth | $116,805.00 465,359.324 CRV | 0.1572% |
47 | ![]() | CRV-USDT | $0.2501 0.0000962 Eth | $114,957.00 459,726.800 CRV | 0.1553% |
48 | ![]() | CRV-USD | $0.2505 0.0000963 Eth | $114,695.00 457,956.000 CRV | 0.1547% |
49 | ![]() | CRV-USDC | $0.2512 0.0000966 Eth | $98,264.00 393,781.000 CRV | 0.1330% |
50 | ![]() | CRV-THB | $0.2513 0.0000967 Eth | $96,094.00 382,389.096 CRV | 0.1292% |
51 | ![]() | CRV-TRY | $0.2505 0.0000963 Eth | $89,901.00 358,849.440 CRV | 0.1212% |
52 | ![]() | CRV-USDT | $0.2504 0.0000964 Eth | $87,042.00 349,627.097 CRV | 0.1181% |
53 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2518 0.0000969 Eth | $77,134.00 309,733.850 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1047% |
54 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2516 0.0000969 Eth | $58,686.00 236,099.523 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0798% |
55 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2509 0.0000966 Eth | $57,449.00 231,796.172 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0783% |
56 | ![]() | CRV-TRY | $0.2531 0.0000974 Eth | $49,779.00 196,681.822 CRV | 0.0665% |
57 | ![]() | CRV-USDT | $0.2504 0.0000963 Eth | $47,587.00 191,371.200 CRV | 0.0647% |
58 | ![]() | CRV-USDT | $0.2512 0.0000967 Eth | $46,824.00 186,423.645 CRV | 0.0630% |
59 | ![]() | CRV-BTC | $0.2511 0.0000967 Eth | $46,340.00 187,099.365 CRV | 0.0632% |
60 | ![]() | CRV-USDT | $0.2511 0.0000966 Eth | $42,953.00 171,087.960 CRV | 0.0578% |
61 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2513 0.0000967 Eth | $40,699.00 165,466.691 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0559% |
62 | ![]() | CRV-USDT | $0.249 0.0000958 Eth | $39,596.00 161,737.800 CRV | 0.0546% |
63 | ![]() | CRV-EUR | $0.2502 0.0000963 Eth | $39,542.00 158,068.763 CRV | 0.0534% |
64 | ![]() | CRV-EUR | $0.2512 0.0000966 Eth | $28,411.00 113,081.590 CRV | 0.0382% |
65 | ![]() | CRV-USDT | $0.2507 0.0000964 Eth | $24,538.00 99,641.905 CRV | 0.0337% |
66 | ![]() | CRV-USD | $0.253 0.0000974 Eth | $22,865.00 90,376.445 CRV | 0.0305% |
67 | ![]() | CRV-USDC | $0.2496 0.0000961 Eth | $21,413.00 86,085.616 CRV | 0.0291% |
68 | ![]() | CRV-BTC | $0.2512 0.0000967 Eth | $18,115.78 80,280.700 CRV | 0.0271% |
69 | ![]() | CRV-GBP | $0.2494 0.0000959 Eth | $17,269.82 69,239.990 CRV | 0.0234% |
70 | ![]() | CRV-BTC | $0.2499 0.0000962 Eth | $15,510.34 62,067.000 CRV | 0.0210% |
71 | ![]() | CRV-USD | $0.2496 0.0000961 Eth | $14,703.05 58,900.000 CRV | 0.0199% |
72 | ![]() | CRV-EUR | $0.2501 0.0000963 Eth | $14,644.71 58,550.000 CRV | 0.0198% |
73 | ![]() | CRV-USDC | $0.2504 0.0000964 Eth | $13,936.83 55,650.000 CRV | 0.0188% |
74 | ![]() | CRV-USDT | $0.2505 0.0000963 Eth | $13,647.48 54,490.647 CRV | 0.0184% |
75 | ![]() | CRV-TRY | $0.2505 0.0000964 Eth | $13,594.57 54,523.984 CRV | 0.0184% |
76 | ![]() | CRV-USDT | $0.2506 0.0000965 Eth | $10,893.48 43,809.480 CRV | 0.0148% |
77 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2511 0.0000967 Eth | $9,671.64 39,016.348 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0132% |
78 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2498 0.0000961 Eth | $9,469.35 38,098.764 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0129% |
79 | ![]() | CRV-USDT | $0.2513 0.0000966 Eth | $9,242.07 36,784.113 CRV | 0.0124% |
80 | ![]() | CRV-USD | $0.2511 0.0000967 Eth | $5,225.20 20,807.598 CRV | 0.0070% |
81 | ![]() | CRV-USDT | $0.2504 0.0000964 Eth | $5,055.71 20,413.500 CRV | 0.0069% |
82 | ![]() | CRV-USDT | $0.2503 0.0000963 Eth | $3,917.84 15,735.271 CRV | 0.0053% |
83 | ![]() | CRV-USDT | $0.2508 0.0000965 Eth | $3,541.61 14,122.743 CRV | 0.0048% |
84 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2508 0.0000966 Eth | $3,212.77 13,084.945 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0044% |
85 | ![]() | CRV-USD | $0.2515 0.0000968 Eth | $3,023.56 12,022.093 CRV | 0.0041% |
86 | ![]() | CRV-BTC | $0.2506 0.0000964 Eth | $2,962.98 11,824.500 CRV | 0.0040% |
87 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2492 0.0000958 Eth | $2,929.59 11,899.294 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0040% |
88 | ![]() | CRV-XBT | $0.2535 0.0000976 Eth | $2,899.68 11,437.810 CRV | 0.0039% |
89 | ![]() | CRV-USDT | $0.2497 0.0000961 Eth | $2,342.34 9,381.715 CRV | 0.0032% |
90 | ![]() | CRV-THB | $0.2502 0.0000963 Eth | $1,904.99 7,634.600 CRV | 0.0026% |
91 | ![]() | CRV-ETH | $0.2504 0.0000964 Eth | $1,082.48 4,380.150 CRV | 0.0015% |
92 | ![]() | CRV-IDR | $0.2507 0.0000965 Eth | $767.83 3,063.248 CRV | 0.0010% |
93 | ![]() | CRV-BTC | $0.2512 0.0000966 Eth | $682.28 2,761.421 CRV | 0.0009% |
94 | ![]() | CRV-BTC | $0.25 0.0000962 Eth | $565.89 2,263.661 CRV | 0.0008% |
95 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2513 0.0000966 Eth | $455.32 1,830.579 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0006% |
96 | ![]() | CRV-USDT | $0.2502 0.0000963 Eth | $251.75 1,006.212 CRV | 0.0003% |
97 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2505 0.0000962 Eth | $212.77 862.886 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0003% |
98 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.2513 0.0000967 Eth | $77.73 317.287 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
99 | ![]() | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $0.252 0.0000970 Eth | $70.69 280.475 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0001% |
100 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2517 0.0000968 Eth | $22.83 92.561 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
Contract Source Code Verified (Exact Match)
Contract Name:
Vyper_contract
Compiler Version
vyper:0.2.4
Contract Source Code (Vyper language format)
# @version 0.2.4 """ @title Curve DAO Token @author Curve Finance @license MIT @notice ERC20 with piecewise-linear mining supply. @dev Based on the ERC-20 token standard as defined at https://eips.ethereum.org/EIPS/eip-20 """ from vyper.interfaces import ERC20 implements: ERC20 event Transfer: _from: indexed(address) _to: indexed(address) _value: uint256 event Approval: _owner: indexed(address) _spender: indexed(address) _value: uint256 event UpdateMiningParameters: time: uint256 rate: uint256 supply: uint256 event SetMinter: minter: address event SetAdmin: admin: address name: public(String[64]) symbol: public(String[32]) decimals: public(uint256) balanceOf: public(HashMap[address, uint256]) allowances: HashMap[address, HashMap[address, uint256]] total_supply: uint256 minter: public(address) admin: public(address) # General constants YEAR: constant(uint256) = 86400 * 365 # Allocation: # ========= # * shareholders - 30% # * emplyees - 3% # * DAO-controlled reserve - 5% # * Early users - 5% # == 43% == # left for inflation: 57% # Supply parameters INITIAL_SUPPLY: constant(uint256) = 1_303_030_303 INITIAL_RATE: constant(uint256) = 274_815_283 * 10 ** 18 / YEAR # leading to 43% premine RATE_REDUCTION_TIME: constant(uint256) = YEAR RATE_REDUCTION_COEFFICIENT: constant(uint256) = 1189207115002721024 # 2 ** (1/4) * 1e18 RATE_DENOMINATOR: constant(uint256) = 10 ** 18 INFLATION_DELAY: constant(uint256) = 86400 # Supply variables mining_epoch: public(int128) start_epoch_time: public(uint256) rate: public(uint256) start_epoch_supply: uint256 @external def __init__(_name: String[64], _symbol: String[32], _decimals: uint256): """ @notice Contract constructor @param _name Token full name @param _symbol Token symbol @param _decimals Number of decimals for token """ init_supply: uint256 = INITIAL_SUPPLY * 10 ** _decimals self.name = _name self.symbol = _symbol self.decimals = _decimals self.balanceOf[msg.sender] = init_supply self.total_supply = init_supply self.admin = msg.sender log Transfer(ZERO_ADDRESS, msg.sender, init_supply) self.start_epoch_time = block.timestamp + INFLATION_DELAY - RATE_REDUCTION_TIME self.mining_epoch = -1 self.rate = 0 self.start_epoch_supply = init_supply @internal def _update_mining_parameters(): """ @dev Update mining rate and supply at the start of the epoch Any modifying mining call must also call this """ _rate: uint256 = self.rate _start_epoch_supply: uint256 = self.start_epoch_supply self.start_epoch_time += RATE_REDUCTION_TIME self.mining_epoch += 1 if _rate == 0: _rate = INITIAL_RATE else: _start_epoch_supply += _rate * RATE_REDUCTION_TIME self.start_epoch_supply = _start_epoch_supply _rate = _rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT self.rate = _rate log UpdateMiningParameters(block.timestamp, _rate, _start_epoch_supply) @external def update_mining_parameters(): """ @notice Update mining rate and supply at the start of the epoch @dev Callable by any address, but only once per epoch Total supply becomes slightly larger if this function is called late """ assert block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME # dev: too soon! self._update_mining_parameters() @external def start_epoch_time_write() -> uint256: """ @notice Get timestamp of the current mining epoch start while simultaneously updating mining parameters @return Timestamp of the epoch """ _start_epoch_time: uint256 = self.start_epoch_time if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() return self.start_epoch_time else: return _start_epoch_time @external def future_epoch_time_write() -> uint256: """ @notice Get timestamp of the next mining epoch start while simultaneously updating mining parameters @return Timestamp of the next epoch """ _start_epoch_time: uint256 = self.start_epoch_time if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() return self.start_epoch_time + RATE_REDUCTION_TIME else: return _start_epoch_time + RATE_REDUCTION_TIME @internal @view def _available_supply() -> uint256: return self.start_epoch_supply + (block.timestamp - self.start_epoch_time) * self.rate @external @view def available_supply() -> uint256: """ @notice Current number of tokens in existence (claimed or unclaimed) """ return self._available_supply() @external @view def mintable_in_timeframe(start: uint256, end: uint256) -> uint256: """ @notice How much supply is mintable from start timestamp till end timestamp @param start Start of the time interval (timestamp) @param end End of the time interval (timestamp) @return Tokens mintable from `start` till `end` """ assert start <= end # dev: start > end to_mint: uint256 = 0 current_epoch_time: uint256 = self.start_epoch_time current_rate: uint256 = self.rate # Special case if end is in future (not yet minted) epoch if end > current_epoch_time + RATE_REDUCTION_TIME: current_epoch_time += RATE_REDUCTION_TIME current_rate = current_rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT assert end <= current_epoch_time + RATE_REDUCTION_TIME # dev: too far in future for i in range(999): # Curve will not work in 1000 years. Darn! if end >= current_epoch_time: current_end: uint256 = end if current_end > current_epoch_time + RATE_REDUCTION_TIME: current_end = current_epoch_time + RATE_REDUCTION_TIME current_start: uint256 = start if current_start >= current_epoch_time + RATE_REDUCTION_TIME: break # We should never get here but what if... elif current_start < current_epoch_time: current_start = current_epoch_time to_mint += current_rate * (current_end - current_start) if start >= current_epoch_time: break current_epoch_time -= RATE_REDUCTION_TIME current_rate = current_rate * RATE_REDUCTION_COEFFICIENT / RATE_DENOMINATOR # double-division with rounding made rate a bit less => good assert current_rate <= INITIAL_RATE # This should never happen return to_mint @external def set_minter(_minter: address): """ @notice Set the minter address @dev Only callable once, when minter has not yet been set @param _minter Address of the minter """ assert msg.sender == self.admin # dev: admin only assert self.minter == ZERO_ADDRESS # dev: can set the minter only once, at creation self.minter = _minter log SetMinter(_minter) @external def set_admin(_admin: address): """ @notice Set the new admin. @dev After all is set up, admin only can change the token name @param _admin New admin address """ assert msg.sender == self.admin # dev: admin only self.admin = _admin log SetAdmin(_admin) @external @view def totalSupply() -> uint256: """ @notice Total number of tokens in existence. """ return self.total_supply @external @view def allowance(_owner : address, _spender : address) -> uint256: """ @notice Check the amount of tokens that an owner allowed to a spender @param _owner The address which owns the funds @param _spender The address which will spend the funds @return uint256 specifying the amount of tokens still available for the spender """ return self.allowances[_owner][_spender] @external def transfer(_to : address, _value : uint256) -> bool: """ @notice Transfer `_value` tokens from `msg.sender` to `_to` @dev Vyper does not allow underflows, so the subtraction in this function will revert on an insufficient balance @param _to The address to transfer to @param _value The amount to be transferred @return bool success """ assert _to != ZERO_ADDRESS # dev: transfers to 0x0 are not allowed self.balanceOf[msg.sender] -= _value self.balanceOf[_to] += _value log Transfer(msg.sender, _to, _value) return True @external def transferFrom(_from : address, _to : address, _value : uint256) -> bool: """ @notice Transfer `_value` tokens from `_from` to `_to` @param _from address The address which you want to send tokens from @param _to address The address which you want to transfer to @param _value uint256 the amount of tokens to be transferred @return bool success """ assert _to != ZERO_ADDRESS # dev: transfers to 0x0 are not allowed # NOTE: vyper does not allow underflows # so the following subtraction would revert on insufficient balance self.balanceOf[_from] -= _value self.balanceOf[_to] += _value self.allowances[_from][msg.sender] -= _value log Transfer(_from, _to, _value) return True @external def approve(_spender : address, _value : uint256) -> bool: """ @notice Approve `_spender` to transfer `_value` tokens on behalf of `msg.sender` @dev Approval may only be from zero -> nonzero or from nonzero -> zero in order to mitigate the potential race condition described here: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 @param _spender The address which will spend the funds @param _value The amount of tokens to be spent @return bool success """ assert _value == 0 or self.allowances[msg.sender][_spender] == 0 self.allowances[msg.sender][_spender] = _value log Approval(msg.sender, _spender, _value) return True @external def mint(_to: address, _value: uint256) -> bool: """ @notice Mint `_value` tokens and assign them to `_to` @dev Emits a Transfer event originating from 0x00 @param _to The account that will receive the created tokens @param _value The amount that will be created @return bool success """ assert msg.sender == self.minter # dev: minter only assert _to != ZERO_ADDRESS # dev: zero address if block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() _total_supply: uint256 = self.total_supply + _value assert _total_supply <= self._available_supply() # dev: exceeds allowable mint amount self.total_supply = _total_supply self.balanceOf[_to] += _value log Transfer(ZERO_ADDRESS, _to, _value) return True @external def burn(_value: uint256) -> bool: """ @notice Burn `_value` tokens belonging to `msg.sender` @dev Emits a Transfer event with a destination of 0x00 @param _value The amount that will be burned @return bool success """ self.balanceOf[msg.sender] -= _value self.total_supply -= _value log Transfer(msg.sender, ZERO_ADDRESS, _value) return True @external def set_name(_name: String[64], _symbol: String[32]): """ @notice Change the token name and symbol to `_name` and `_symbol` @dev Only callable by the admin account @param _name New token name @param _symbol New token symbol """ assert msg.sender == self.admin, "Only admin is allowed to change name" self.name = _name self.symbol = _symbol
Contract Security Audit
- 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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