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Overview
Max Total Supply
2,155,461,151.880546542314033995 CRV
Holders
87,292 ( 0.017%)
Market
Price
$0.25 @ 0.000097 ETH (+0.69%)
Onchain Market Cap
$549,035,326.28
Circulating Supply Market Cap
$296,277,943.26
Other Info
Token Contract (WITH 18 Decimals)
Balance
1 CRVValue
$0.25 ( ~9.48445661495114E-05 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2549 0.0000967 Eth | $13,409,005.00 53,835,025.600 CRV | 19.9362% |
2 | ![]() | CRV-USDT | $0.255 0.0000968 Eth | $6,928,421.00 27,819,415.856 CRV | 10.3021% |
3 | ![]() | CRV-USDT | $0.2552 0.0000969 Eth | $5,180,182.00 20,837,136.711 CRV | 7.7164% |
4 | ![]() | CRV-USDT | $0.2556 0.0000973 Eth | $4,847,073.00 19,466,880.600 CRV | 7.2090% |
5 | ![]() | CRV-USDT | $0.2551 0.0000968 Eth | $4,790,330.00 19,251,370.400 CRV | 7.1292% |
6 | ![]() | CRV-USDT | $0.2548 0.0000967 Eth | $4,725,339.00 18,546,110.946 CRV | 6.8680% |
7 | ![]() | CRV-USDT | $0.2548 0.0000967 Eth | $2,600,555.00 10,207,578.250 CRV | 3.7801% |
8 | ![]() | CRV-USDT | $0.2548 0.0000967 Eth | $2,392,814.00 9,622,118.410 CRV | 3.5633% |
9 | ![]() | CRV-USDT | $0.2549 0.0000967 Eth | $2,277,215.00 9,134,986.500 CRV | 3.3829% |
10 | ![]() | CRV-USD | $0.255 0.0000968 Eth | $2,001,852.00 7,850,398.830 CRV | 2.9072% |
11 | ![]() | CRV-USDT | $0.2549 0.0000967 Eth | $1,923,104.00 0.000 CRV | 0.0000% |
12 | ![]() | CRV-USDT | $0.2539 0.0000964 Eth | $1,587,069.00 6,250,759.600 CRV | 2.3148% |
13 | ![]() | CRV-USDT | $0.2549 0.0000968 Eth | $1,256,550.00 5,042,740.400 CRV | 1.8674% |
14 | ![]() | CRV-USDT | $0.2548 0.0000967 Eth | $1,105,520.00 4,338,790.680 CRV | 1.6067% |
15 | ![]() | CRV-USDT | $0.2544 0.0000967 Eth | $1,078,238.00 4,329,191.300 CRV | 1.6032% |
16 | ![]() | CRV-USDT | $0.255 0.0000968 Eth | $903,110.00 3,541,508.000 CRV | 1.3115% |
17 | ![]() | CRV-USDT | $0.255 0.0000968 Eth | $898,815.00 3,608,947.300 CRV | 1.3365% |
18 | ![]() | CRV-USDT | $0.2549 0.0000967 Eth | $765,358.00 3,001,414.100 CRV | 1.1115% |
19 | ![]() | CRV-USDT | $0.255 0.0000968 Eth | $698,171.00 2,802,348.535 CRV | 1.0378% |
20 | ![]() | CRV-USDT | $0.2549 0.0000968 Eth | $609,334.00 2,390,871.644 CRV | 0.8854% |
21 | ![]() | CRV-USDT | $0.2549 0.0000967 Eth | $591,662.00 2,321,087.800 CRV | 0.8595% |
22 | ![]() | CRV-USDT | $0.2552 0.0000969 Eth | $528,644.00 2,126,668.200 CRV | 0.7875% |
23 | ![]() | CRV-USDT | $0.2546 0.0000967 Eth | $522,756.00 2,053,136.000 CRV | 0.7603% |
24 | ![]() | CRV-USDT | $0.254 0.0000966 Eth | $502,101.00 1,976,986.300 CRV | 0.7321% |
25 | ![]() | CRV-XRP | $0.2544 0.0000966 Eth | $483,966.00 1,902,311.140 CRV | 0.7045% |
26 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2559 0.0000972 Eth | $442,829.00 1,781,073.975 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.6596% |
27 | ![]() | CRV-USDT | $0.2551 0.0000968 Eth | $442,243.00 1,733,886.325 CRV | 0.6421% |
28 | ![]() | CRV-USDT | $0.2543 0.0000966 Eth | $414,439.00 1,629,637.740 CRV | 0.6035% |
29 | ![]() | CRV-USDC | $0.2542 0.0000965 Eth | $406,279.00 1,598,456.040 CRV | 0.5919% |
30 | ![]() | CRV-USDT | $0.2559 0.0000971 Eth | $374,317.00 1,462,525.100 CRV | 0.5416% |
31 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2543 0.0000965 Eth | $314,604.00 1,253,071.079 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4640% |
32 | ![]() | CRV-TRY | $0.2556 0.0000970 Eth | $274,088.00 1,088,796.000 CRV | 0.4032% |
33 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2547 0.0000967 Eth | $274,042.00 1,089,701.892 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.4035% |
34 | ![]() | CRV-USDT | $0.2535 0.0000962 Eth | $272,058.00 1,091,839.700 CRV | 0.4043% |
35 | ![]() | CRV-TRY | $0.255 0.0000968 Eth | $269,834.00 1,058,152.200 CRV | 0.3919% |
36 | ![]() | CRV-USDT | $0.2547 0.0000967 Eth | $221,981.00 891,633.234 CRV | 0.3302% |
37 | ![]() | CRV-USDT | $0.255 0.0000968 Eth | $215,126.00 863,900.691 CRV | 0.3199% |
38 | ![]() | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2544 0.0000967 Eth | $188,323.00 184,884.579 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0685% |
39 | ![]() | CRV-USDT | $0.2544 0.0000965 Eth | $186,053.00 731,343.300 CRV | 0.2708% |
40 | ![]() | CRV-SGD | $0.2543 0.0000966 Eth | $185,647.00 729,958.372 CRV | 0.2703% |
41 | ![]() | CRV-BTC | $0.2543 0.0000965 Eth | $176,721.00 705,536.100 CRV | 0.2613% |
42 | ![]() | CRV-EUR | $0.2557 0.0000971 Eth | $164,971.00 645,135.832 CRV | 0.2389% |
43 | ![]() | CRV-USDC | $0.256 0.0000971 Eth | $160,996.00 645,365.840 CRV | 0.2390% |
44 | ![]() | CRV-USDT | $0.2543 0.0000966 Eth | $126,529.00 508,253.700 CRV | 0.1882% |
45 | ![]() | CRV-USD | $0.255 0.0000968 Eth | $125,847.00 493,517.618 CRV | 0.1828% |
46 | ![]() | CRV-USDT | $0.2545 0.0000966 Eth | $124,543.00 500,210.300 CRV | 0.1852% |
47 | ![]() | CRV-USDT | $0.255 0.0000968 Eth | $121,234.00 475,415.172 CRV | 0.1761% |
48 | ![]() | CRV-USD | $0.255 0.0000968 Eth | $114,822.00 450,281.970 CRV | 0.1667% |
49 | ![]() | CRV-USDT | $0.2531 0.0000960 Eth | $109,553.00 432,834.400 CRV | 0.1603% |
50 | ![]() | CRV-USDT | $0.2541 0.0000964 Eth | $109,193.00 452,827.928 CRV | 0.1677% |
51 | ![]() | CRV-TRY | $0.2562 0.0000973 Eth | $108,216.00 422,388.380 CRV | 0.1564% |
52 | ![]() | CRV-THB | $0.2561 0.0000972 Eth | $102,716.00 401,038.207 CRV | 0.1485% |
53 | ![]() | CRV-USD | $0.2544 0.0000969 Eth | $101,211.00 397,920.000 CRV | 0.1474% |
54 | ![]() | CRV-USDC | $0.2549 0.0000969 Eth | $100,740.00 402,803.300 CRV | 0.1492% |
55 | ![]() | CRV-USDT | $0.2551 0.0000968 Eth | $76,888.00 308,659.546 CRV | 0.1143% |
56 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2554 0.0000970 Eth | $72,085.00 289,309.260 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1071% |
57 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2563 0.0000972 Eth | $54,358.00 215,008.187 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0796% |
58 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2543 0.0000965 Eth | $51,540.00 205,409.462 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0761% |
59 | ![]() | CRV-TRY | $0.2569 0.0000975 Eth | $50,897.00 198,082.929 CRV | 0.0734% |
60 | ![]() | CRV-BTC | $0.2555 0.0000970 Eth | $48,374.00 193,001.928 CRV | 0.0715% |
61 | ![]() | CRV-USDT | $0.2543 0.0000965 Eth | $45,709.00 179,718.332 CRV | 0.0666% |
62 | ![]() | CRV-USDT | $0.2549 0.0000967 Eth | $45,006.00 180,723.500 CRV | 0.0669% |
63 | ![]() | CRV-USDT | $0.2551 0.0000968 Eth | $42,190.00 165,405.626 CRV | 0.0613% |
64 | ![]() | CRV-USDT | $0.2541 0.0000964 Eth | $40,257.00 161,849.000 CRV | 0.0599% |
65 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2544 0.0000966 Eth | $35,926.00 143,340.102 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0531% |
66 | ![]() | CRV-BTC | $0.2555 0.0000970 Eth | $31,423.00 123,009.400 CRV | 0.0456% |
67 | ![]() | CRV-USDT | $0.2542 0.0000965 Eth | $30,452.00 123,068.112 CRV | 0.0456% |
68 | ![]() | CRV-EUR | $0.2564 0.0000973 Eth | $27,569.00 107,532.120 CRV | 0.0398% |
69 | ![]() | CRV-EUR | $0.2556 0.0000970 Eth | $25,028.00 97,913.339 CRV | 0.0363% |
70 | ![]() | CRV-USDC | $0.2524 0.0000958 Eth | $21,783.00 87,501.933 CRV | 0.0324% |
71 | ![]() | CRV-GBP | $0.2546 0.0000966 Eth | $19,134.09 75,141.790 CRV | 0.0278% |
72 | ![]() | CRV-BTC | $0.2543 0.0000965 Eth | $18,251.35 74,153.700 CRV | 0.0275% |
73 | ![]() | CRV-BTC | $0.2543 0.0000965 Eth | $15,843.02 62,298.000 CRV | 0.0231% |
74 | ![]() | CRV-BTC | $0.2555 0.0000970 Eth | $15,314.41 59,934.550 CRV | 0.0222% |
75 | ![]() | CRV-USD | $0.2546 0.0000967 Eth | $14,995.95 58,900.000 CRV | 0.0218% |
76 | ![]() | CRV-EUR | $0.2556 0.0000970 Eth | $14,963.33 58,550.000 CRV | 0.0217% |
77 | ![]() | CRV-USDC | $0.255 0.0000968 Eth | $14,191.71 55,650.000 CRV | 0.0206% |
78 | ![]() | CRV-TRY | $0.2562 0.0000972 Eth | $13,783.24 55,082.800 CRV | 0.0204% |
79 | ![]() | CRV-USDT | $0.2543 0.0000965 Eth | $11,444.58 45,918.787 CRV | 0.0170% |
80 | ![]() | CRV-USDT | $0.2544 0.0000967 Eth | $11,443.82 44,988.563 CRV | 0.0167% |
81 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.2556 0.0000970 Eth | $11,225.12 45,375.451 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0168% |
82 | ![]() | CRV-USDT | $0.2543 0.0000965 Eth | $8,937.41 35,144.951 CRV | 0.0130% |
83 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2541 0.0000966 Eth | $8,855.47 35,125.967 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0130% |
84 | ![]() | CRV-ETH | $0.2549 0.0000967 Eth | $8,241.71 32,338.112 CRV | 0.0120% |
85 | ![]() | CRV-EUR | $0.2549 0.0000969 Eth | $6,669.29 26,169.322 CRV | 0.0097% |
86 | ![]() | CRV-USDT | $0.2546 0.0000966 Eth | $4,847.53 19,569.800 CRV | 0.0072% |
87 | ![]() | CRV-USDT | $0.254 0.0000964 Eth | $4,125.85 16,533.687 CRV | 0.0061% |
88 | ![]() | CRV-USDT | $0.2543 0.0000965 Eth | $3,786.46 14,888.753 CRV | 0.0055% |
89 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2549 0.0000970 Eth | $2,746.64 10,907.428 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0040% |
90 | ![]() | CRV-XBT | $0.2555 0.0000970 Eth | $2,479.25 9,702.824 CRV | 0.0036% |
91 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2543 0.0000965 Eth | $2,439.30 9,675.327 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0036% |
92 | ![]() | CRV-USDT | $0.2542 0.0000967 Eth | $2,328.51 9,161.188 CRV | 0.0034% |
93 | ![]() | CRV-THB | $0.2538 0.0000963 Eth | $1,529.58 6,119.600 CRV | 0.0023% |
94 | ![]() | CRV-ETH | $0.2549 0.0000967 Eth | $1,111.30 4,405.370 CRV | 0.0016% |
95 | ![]() | CRV-IDR | $0.2544 0.0000966 Eth | $769.86 3,025.909 CRV | 0.0011% |
96 | ![]() | CRV-BTC | $0.2561 0.0000972 Eth | $711.80 2,857.939 CRV | 0.0011% |
97 | ![]() | CRV-BTC | $0.2543 0.0000965 Eth | $526.75 2,071.672 CRV | 0.0008% |
98 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.253 0.0000962 Eth | $336.91 1,355.469 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0005% |
99 | ![]() | CRV-USDT | $0.2561 0.0000972 Eth | $302.53 1,181.116 CRV | 0.0004% |
100 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.2528 0.0000960 Eth | $50.40 202.301 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
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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