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Overview
Max Total Supply
2,166,023,535.611719464566781769 CRV
Holders
87,895 ( -0.001%)
Market
Price
$0.29 @ 0.000120 ETH (+7.44%)
Onchain Market Cap
$620,023,099.50
Circulating Supply Market Cap
$340,871,786.52
Other Info
Token Contract (WITH 18 Decimals)
Balance
32.911481593104692681 CRVValue
$9.42 ( ~0.00394111335728873 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2862 0.0001199 Eth | $12,263,326.00 43,403,493.300 CRV | 14.1001% |
2 | ![]() | CRV-USDT | $0.286 0.0001196 Eth | $7,836,420.00 27,675,799.102 CRV | 8.9908% |
3 | ![]() | CRV-USDT | $0.2862 0.0001196 Eth | $6,994,115.00 24,649,145.773 CRV | 8.0075% |
4 | ![]() | CRV-USDT | $0.2863 0.0001196 Eth | $6,631,864.00 23,322,698.855 CRV | 7.5766% |
5 | ![]() | CRV-USDT | $0.2868 0.0001200 Eth | $4,948,909.00 0.000 CRV | 0.0000% |
6 | ![]() | CRV-USDT | $0.2864 0.0001198 Eth | $4,751,426.00 16,585,914.300 CRV | 5.3881% |
7 | ![]() | CRV-USDT | $0.286 0.0001196 Eth | $4,212,732.00 14,861,340.700 CRV | 4.8279% |
8 | ![]() | CRV-USDT | $0.286 0.0001195 Eth | $4,181,888.00 14,624,541.396 CRV | 4.7509% |
9 | ![]() | CRV-USD | $0.2862 0.0001196 Eth | $3,736,438.00 13,055,338.250 CRV | 4.2412% |
10 | ![]() | CRV-USDT | $0.2865 0.0001197 Eth | $2,810,708.00 9,812,215.370 CRV | 3.1876% |
11 | ![]() | CRV-USDT | $0.2868 0.0001199 Eth | $2,707,674.00 9,537,302.000 CRV | 3.0983% |
12 | ![]() | CRV-USDT | $0.2868 0.0001198 Eth | $2,557,976.00 8,919,913.300 CRV | 2.8977% |
13 | ![]() | CRV-USDT | $0.2865 0.0001199 Eth | $2,159,361.00 7,607,984.400 CRV | 2.4715% |
14 | ![]() | CRV-USDT | $0.2862 0.0001196 Eth | $2,033,074.00 7,102,601.700 CRV | 2.3074% |
15 | ![]() | CRV-USDT | $0.2861 0.0001197 Eth | $1,779,186.00 6,219,002.500 CRV | 2.0203% |
16 | ![]() | CRV-USDT | $0.2867 0.0001199 Eth | $1,529,440.00 5,391,241.700 CRV | 1.7514% |
17 | ![]() | CRV-USDT | $0.2866 0.0001199 Eth | $1,333,277.00 4,699,106.696 CRV | 1.5266% |
18 | ![]() | CRV-USDT | $0.2862 0.0001196 Eth | $1,223,229.00 4,273,966.160 CRV | 1.3884% |
19 | ![]() | CRV-USDT | $0.2864 0.0001197 Eth | $1,194,082.00 4,169,702.500 CRV | 1.3546% |
20 | ![]() | CRV-USDT | $0.2862 0.0001198 Eth | $1,097,190.00 3,834,251.200 CRV | 1.2456% |
21 | ![]() | CRV-USDT | $0.2861 0.0001197 Eth | $1,010,620.00 3,565,585.300 CRV | 1.1583% |
22 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.286 0.0001195 Eth | $913,899.00 3,212,756.573 0XD533A949740BB3306D119CC777FA900BA034CD52 | 1.0437% |
23 | ![]() | CRV-USDT | $0.2854 0.0001194 Eth | $812,311.00 2,846,582.896 CRV | 0.9247% |
24 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2861 0.0001196 Eth | $800,645.00 2,859,614.259 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.9290% |
25 | ![]() | CRV-USDT | $0.2866 0.0001199 Eth | $781,045.00 2,756,733.183 CRV | 0.8956% |
26 | ![]() | CRV-USDT | $0.2869 0.0001201 Eth | $722,274.00 2,540,901.100 CRV | 0.8254% |
27 | ![]() | CRV-USD | $0.286 0.0001196 Eth | $642,600.00 2,246,854.857 CRV | 0.7299% |
28 | ![]() | CRV-BTC | $0.2864 0.0001198 Eth | $616,628.00 2,187,401.300 CRV | 0.7106% |
29 | ![]() | CRV-USDT | $0.2866 0.0001199 Eth | $585,457.00 2,042,728.900 CRV | 0.6636% |
30 | ![]() | CRV-USDT | $0.2866 0.0001199 Eth | $551,703.00 1,940,071.267 CRV | 0.6303% |
31 | ![]() | CRV-TRY | $0.2862 0.0001199 Eth | $529,909.00 1,851,462.500 CRV | 0.6015% |
32 | ![]() | CRV-USDT | $0.287 0.0001201 Eth | $528,887.00 1,873,654.300 CRV | 0.6087% |
33 | ![]() | CRV-THB | $0.2865 0.0001198 Eth | $506,539.00 1,768,321.382 CRV | 0.5745% |
34 | ![]() | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2866 0.0001199 Eth | $472,581.00 464,725.877 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.1510% |
35 | ![]() | CRV-USDT | $0.2864 0.0001199 Eth | $443,048.00 1,558,946.860 CRV | 0.5064% |
36 | ![]() | CRV-USDT | $0.2863 0.0001196 Eth | $427,517.00 1,505,437.388 CRV | 0.4891% |
37 | ![]() | CRV-TRY | $0.2862 0.0001199 Eth | $389,898.00 1,347,797.300 CRV | 0.4378% |
38 | ![]() | CRV-USDT | $0.2876 0.0001202 Eth | $366,162.00 1,273,386.200 CRV | 0.4137% |
39 | ![]() | CRV-USDT | $0.2864 0.0001197 Eth | $353,936.00 1,236,019.120 CRV | 0.4015% |
40 | ![]() | CRV-EUR | $0.2865 0.0001197 Eth | $349,425.00 1,219,810.862 CRV | 0.3963% |
41 | ![]() | CRV-USDC | $0.286 0.0001198 Eth | $316,711.00 1,105,912.900 CRV | 0.3593% |
42 | ![]() | CRV-USDT | $0.2854 0.0001192 Eth | $300,344.00 1,057,980.400 CRV | 0.3437% |
43 | ![]() | CRV-USDT | $0.2866 0.0001198 Eth | $294,427.00 1,027,469.583 CRV | 0.3338% |
44 | ![]() | CRV-USDT | $0.2867 0.0001200 Eth | $289,430.00 1,018,417.000 CRV | 0.3308% |
45 | ![]() | CRV-USDT | $0.2859 0.0001195 Eth | $278,522.00 974,043.800 CRV | 0.3164% |
46 | ![]() | CRV-USD | $0.286 0.0001195 Eth | $267,327.00 934,710.300 CRV | 0.3037% |
47 | ![]() | CRV-USDT | $0.2867 0.0001198 Eth | $233,696.00 815,204.999 CRV | 0.2648% |
48 | ![]() | CRV-USDT | $0.2867 0.0001200 Eth | $232,870.00 812,339.900 CRV | 0.2639% |
49 | ![]() | CRV-USDT | $0.2866 0.0001199 Eth | $231,429.00 807,572.842 CRV | 0.2623% |
50 | ![]() | CRV-USDT | $0.2862 0.0001197 Eth | $226,212.00 796,840.623 CRV | 0.2589% |
51 | ![]() | CRV-USDT | $0.2864 0.0001197 Eth | $172,949.00 603,978.000 CRV | 0.1962% |
52 | ![]() | CRV-USDC | $0.2875 0.0001203 Eth | $160,506.00 563,588.970 CRV | 0.1831% |
53 | ![]() | CRV-BTC | $0.2862 0.0001196 Eth | $153,209.00 535,312.100 CRV | 0.1739% |
54 | ![]() | CRV-USDT | $0.2867 0.0001198 Eth | $150,090.00 529,082.800 CRV | 0.1719% |
55 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2863 0.0001197 Eth | $140,386.00 489,177.721 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1589% |
56 | ![]() | CRV-EUR | $0.2858 0.0001194 Eth | $130,197.00 455,530.680 CRV | 0.1480% |
57 | ![]() | CRV-USDT | $0.2861 0.0001197 Eth | $129,550.00 452,834.067 CRV | 0.1471% |
58 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2874 0.0001202 Eth | $119,021.00 421,716.673 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.1370% |
59 | ![]() | CRV-TRY | $0.2859 0.0001197 Eth | $97,352.00 340,489.890 CRV | 0.1106% |
60 | ![]() | CRV-TRY | $0.2868 0.0001198 Eth | $87,259.00 304,251.300 CRV | 0.0988% |
61 | ![]() | CRV-GBP | $0.2865 0.0001197 Eth | $80,678.00 281,588.000 CRV | 0.0915% |
62 | ![]() | CRV-EUR | $0.2863 0.0001197 Eth | $73,398.00 256,386.723 CRV | 0.0833% |
63 | ![]() | CRV-EUR | $0.2863 0.0001198 Eth | $72,852.00 252,540.008 CRV | 0.0820% |
64 | ![]() | CRV-USDT | $0.2871 0.0001200 Eth | $68,168.00 237,472.699 CRV | 0.0771% |
65 | ![]() | CRV-BTC | $0.286 0.0001195 Eth | $63,067.00 220,531.425 CRV | 0.0716% |
66 | ![]() | CRV-BTC | $0.2865 0.0001197 Eth | $62,415.00 225,391.200 CRV | 0.0732% |
67 | ![]() | CRV-USDT | $0.2863 0.0001199 Eth | $60,230.00 212,408.000 CRV | 0.0690% |
68 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2877 0.0001203 Eth | $50,716.00 180,347.476 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0586% |
69 | ![]() | CRV-BTC | $0.2871 0.0001200 Eth | $48,855.00 170,163.000 CRV | 0.0553% |
70 | ![]() | CRV-USDC | $0.2862 0.0001196 Eth | $47,084.00 165,161.439 CRV | 0.0537% |
71 | ![]() | CRV-BTC | $0.2864 0.0001198 Eth | $45,576.00 162,639.405 CRV | 0.0528% |
72 | ![]() | CRV-USDT | $0.286 0.0001196 Eth | $44,987.00 162,513.400 CRV | 0.0528% |
73 | ![]() | CRV-USD | $0.287 0.0001199 Eth | $37,560.00 130,872.721 CRV | 0.0425% |
74 | ![]() | CRV-USDT | $0.2864 0.0001197 Eth | $36,663.00 128,033.429 CRV | 0.0416% |
75 | ![]() | CRV-USDT | $0.2863 0.0001196 Eth | $31,129.00 108,747.598 CRV | 0.0353% |
76 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $0.2864 0.0001197 Eth | $30,113.00 105,443.564 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0343% |
77 | ![]() | CRV-USD | $0.2862 0.0001196 Eth | $22,312.00 77,971.417 CRV | 0.0253% |
78 | ![]() | CRV-BTC | $0.2841 0.0001188 Eth | $19,819.22 69,759.541 CRV | 0.0227% |
79 | ![]() | CRV-USDT | $0.2857 0.0001196 Eth | $19,302.79 67,566.623 CRV | 0.0219% |
80 | ![]() | CRV-TRY | $0.2868 0.0001200 Eth | $18,667.28 65,491.119 CRV | 0.0213% |
81 | ![]() | CRV-USDT | $0.2856 0.0001194 Eth | $17,571.00 61,513.634 CRV | 0.0200% |
82 | ![]() | CRV-USDT | $0.287 0.0001199 Eth | $14,944.80 52,680.400 CRV | 0.0171% |
83 | ![]() | CRV-THB | $0.2882 0.0001204 Eth | $14,925.50 51,226.600 CRV | 0.0166% |
84 | ![]() | CRV-USDT | $0.2862 0.0001197 Eth | $13,741.43 48,328.605 CRV | 0.0157% |
85 | ![]() | CRV-BTC | $0.286 0.0001195 Eth | $10,373.30 36,273.800 CRV | 0.0118% |
86 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2866 0.0001199 Eth | $9,126.20 32,596.109 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0106% |
87 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2864 0.0001197 Eth | $8,574.46 29,873.471 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0097% |
88 | ![]() | CRV-IDR | $0.2874 0.0001202 Eth | $8,489.06 29,533.356 CRV | 0.0096% |
89 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2884 0.0001205 Eth | $5,091.09 18,151.413 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0059% |
90 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2857 0.0001197 Eth | $4,859.97 17,411.569 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0057% |
91 | ![]() | CRV-EUR | $0.2882 0.0001207 Eth | $4,854.96 16,844.741 CRV | 0.0055% |
92 | ![]() | CRV-ETH | $0.2868 0.0001199 Eth | $4,544.77 16,198.610 CRV | 0.0053% |
93 | ![]() | CRV-USDT | $0.2867 0.0001198 Eth | $4,096.08 14,447.607 CRV | 0.0047% |
94 | ![]() | CRV-USD | $0.2881 0.0001205 Eth | $3,158.22 10,962.604 CRV | 0.0036% |
95 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.2843 0.0001190 Eth | $2,888.82 10,522.324 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0034% |
96 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2862 0.0001196 Eth | $656.76 2,344.885 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0008% |
97 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | $0.2867 0.0001200 Eth | $637.54 2,241.081 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0007% |
98 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.2857 0.0001194 Eth | $184.84 666.178 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0002% |
99 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $0.2868 0.0001198 Eth | $160.81 553.910 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0002% |
100 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $0.2884 0.0001207 Eth | $25.82 89.572 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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