Overview
Max Total Supply
2,148,997,038.351843618678155694 CRV
Holders
86,798 ( 0.001%)
Market
Price
$0.27 @ 0.000082 ETH (+8.21%)
Onchain Market Cap
$570,997,949.25
Circulating Supply Market Cap
$315,667,234.99
Other Info
Token Contract (WITH 18 Decimals)
Balance
4.39779101975105126 CRVValue
$1.17 ( ~0.000359314491873853 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2661 0.0000819 Eth | $9,032,687.00 35,232,358.513 CRV | 20.3168% |
2 | ![]() | CRV-USDT | $0.2664 0.0000819 Eth | $5,741,458.00 22,106,208.700 CRV | 12.7476% |
3 | ![]() | CRV-USDT | $0.2663 0.0000820 Eth | $4,073,033.00 15,716,092.371 CRV | 9.0627% |
4 | ![]() | CRV-USDT | $0.2661 0.0000819 Eth | $3,108,618.00 11,681,539.180 CRV | 6.7362% |
5 | ![]() | CRV-USDT | $0.2661 0.0000818 Eth | $2,736,329.00 10,545,796.200 CRV | 6.0812% |
6 | ![]() | CRV-USDT | $0.2657 0.0000816 Eth | $2,418,195.00 9,100,439.343 CRV | 5.2478% |
7 | ![]() | CRV-USDT | $0.2657 0.0000817 Eth | $2,314,254.00 8,908,858.100 CRV | 5.1373% |
8 | ![]() | CRV-USDT | $0.2664 0.0000820 Eth | $1,788,105.00 6,887,059.910 CRV | 3.9714% |
9 | ![]() | CRV-USDT | $0.266 0.0000819 Eth | $1,598,340.00 6,152,159.300 CRV | 3.5476% |
10 | ![]() | CRV-USDT | $0.2655 0.0000814 Eth | $1,379,054.00 5,319,141.480 CRV | 3.0673% |
11 | ![]() | CRV-USDT | $0.2661 0.0000818 Eth | $858,379.00 0.000 CRV | 0.0000% |
12 | ![]() | CRV-USD | $0.2664 0.0000819 Eth | $793,834.00 2,979,858.130 CRV | 1.7183% |
13 | ![]() | CRV-USDT | $0.2663 0.0000820 Eth | $738,941.00 2,849,026.460 CRV | 1.6429% |
14 | ![]() | CRV-USDT | $0.2663 0.0000820 Eth | $651,015.00 2,503,349.487 CRV | 1.4436% |
15 | ![]() | CRV-USDT | $0.2655 0.0000816 Eth | $518,503.00 1,953,002.900 CRV | 1.1262% |
16 | ![]() | CRV-USDT | $0.2659 0.0000817 Eth | $469,963.00 1,767,288.560 CRV | 1.0191% |
17 | ![]() | CRV-USDT | $0.2657 0.0000816 Eth | $458,087.00 1,765,217.500 CRV | 1.0179% |
18 | ![]() | CRV-USDT | $0.2664 0.0000820 Eth | $441,171.00 1,655,747.700 CRV | 0.9548% |
19 | ![]() | CRV-USDT | $0.2658 0.0000817 Eth | $415,368.00 1,599,949.100 CRV | 0.9226% |
20 | ![]() | CRV-USDT | $0.2656 0.0000817 Eth | $375,520.00 1,413,600.709 CRV | 0.8152% |
21 | ![]() | CRV-USDT | $0.2652 0.0000816 Eth | $365,537.00 1,378,091.000 CRV | 0.7947% |
22 | ![]() | CRV-USDT | $0.2664 0.0000819 Eth | $334,389.00 1,255,354.100 CRV | 0.7239% |
23 | ![]() | CRV-USDT | $0.2659 0.0000817 Eth | $326,138.00 1,226,428.400 CRV | 0.7072% |
24 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2682 0.0000823 Eth | $316,192.00 1,221,089.143 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.7041% |
25 | ![]() | CRV-USDT | $0.2649 0.0000814 Eth | $292,245.00 1,125,111.000 CRV | 0.6488% |
26 | ![]() | CRV-USDC | $0.2665 0.0000820 Eth | $264,553.00 992,871.050 CRV | 0.5725% |
27 | ![]() | CRV-TRY | $0.2668 0.0000818 Eth | $232,039.00 883,629.300 CRV | 0.5095% |
28 | ![]() | CRV-USDT | $0.265 0.0000815 Eth | $230,946.00 891,729.100 CRV | 0.5142% |
29 | ![]() | CRV-USDT | $0.2656 0.0000813 Eth | $229,391.00 863,589.900 CRV | 0.4980% |
30 | ![]() | CRV-USDT | $0.266 0.0000817 Eth | $227,566.00 876,675.076 CRV | 0.5055% |
31 | ![]() | CRV-XRP | $0.266 0.0000818 Eth | $206,536.00 776,545.360 CRV | 0.4478% |
32 | ![]() | CRV-USDT | $0.2663 0.0000820 Eth | $204,236.00 766,877.677 CRV | 0.4422% |
33 | ![]() | CRV-TRY | $0.268 0.0000823 Eth | $177,212.00 661,193.700 CRV | 0.3813% |
34 | ![]() | CRV-USDT | $0.266 0.0000817 Eth | $159,664.00 600,188.830 CRV | 0.3461% |
35 | ![]() | CRV-USDC | $0.2664 0.0000820 Eth | $157,086.00 602,566.570 CRV | 0.3475% |
36 | ![]() | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2664 0.0000819 Eth | $149,743.00 203,840.356 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.1175% |
37 | ![]() | CRV-USDT | $0.266 0.0000818 Eth | $149,449.00 573,034.482 CRV | 0.3304% |
38 | ![]() | CRV-EUR | $0.2664 0.0000820 Eth | $134,608.00 505,329.093 CRV | 0.2914% |
39 | ![]() | CRV-USDT | $0.2663 0.0000820 Eth | $122,835.00 472,566.358 CRV | 0.2725% |
40 | ![]() | CRV-USDT | $0.2663 0.0000820 Eth | $114,581.00 442,250.500 CRV | 0.2550% |
41 | ![]() | CRV-USDT | $0.2658 0.0000818 Eth | $111,101.00 417,968.640 CRV | 0.2410% |
42 | ![]() | CRV-USDT | $0.2661 0.0000817 Eth | $104,758.00 393,722.400 CRV | 0.2270% |
43 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.266 0.0000815 Eth | $101,283.00 385,702.853 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.2224% |
44 | ![]() | CRV-BTC | $0.2664 0.0000820 Eth | $99,448.00 380,686.500 CRV | 0.2195% |
45 | ![]() | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2664 0.0000819 Eth | $96,955.00 94,811.324 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0547% |
46 | ![]() | CRV-USDT | $0.2658 0.0000818 Eth | $95,017.00 366,084.264 CRV | 0.2111% |
47 | ![]() | CRV-USDT | $0.267 0.0000821 Eth | $75,457.00 289,906.600 CRV | 0.1672% |
48 | ![]() | CRV-USD | $0.267 0.0000821 Eth | $74,723.00 279,863.134 CRV | 0.1614% |
49 | ![]() | CRV-TRY | $0.2665 0.0000816 Eth | $74,642.00 280,085.090 CRV | 0.1615% |
50 | ![]() | CRV-USDT | $0.2663 0.0000820 Eth | $72,769.00 279,903.200 CRV | 0.1614% |
51 | ![]() | CRV-USDT | $0.2658 0.0000818 Eth | $68,267.00 263,462.178 CRV | 0.1519% |
52 | ![]() | CRV-USDT | $0.2658 0.0000817 Eth | $67,698.00 254,722.123 CRV | 0.1469% |
53 | ![]() | CRV-USDC | $0.2653 0.0000813 Eth | $66,032.00 252,660.700 CRV | 0.1457% |
54 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2654 0.0000813 Eth | $57,225.00 218,372.805 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.1259% |
55 | ![]() | CRV-USDT | $0.267 0.0000821 Eth | $57,050.00 213,705.568 CRV | 0.1232% |
56 | ![]() | CRV-BTC | $0.2637 0.0000811 Eth | $56,701.00 214,981.907 CRV | 0.1240% |
57 | ![]() | CRV-TRY | $0.2676 0.0000820 Eth | $55,537.00 207,540.518 CRV | 0.1197% |
58 | ![]() | CRV-THB | $0.2689 0.0000827 Eth | $52,653.00 195,815.475 CRV | 0.1129% |
59 | ![]() | CRV-USDT | $0.265 0.0000815 Eth | $49,351.00 186,220.200 CRV | 0.1074% |
60 | ![]() | CRV-USDT | $0.266 0.0000819 Eth | $48,460.00 182,165.408 CRV | 0.1050% |
61 | ![]() | CRV-USD | $0.265 0.0000815 Eth | $45,839.00 172,975.920 CRV | 0.0997% |
62 | ![]() | CRV-BTC | $0.2658 0.0000817 Eth | $43,785.00 167,504.561 CRV | 0.0966% |
63 | ![]() | CRV-USD | $0.2654 0.0000816 Eth | $41,970.00 158,139.398 CRV | 0.0912% |
64 | ![]() | CRV-USDT | $0.2658 0.0000818 Eth | $41,618.00 162,135.600 CRV | 0.0935% |
65 | ![]() | CRV-USDT | $0.2658 0.0000817 Eth | $39,971.00 153,321.559 CRV | 0.0884% |
66 | ![]() | CRV-BTC | $0.2635 0.0000809 Eth | $32,044.00 121,627.700 CRV | 0.0701% |
67 | ![]() | CRV-ETH | $0.2663 0.0000818 Eth | $21,765.00 81,728.084 CRV | 0.0471% |
68 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2665 0.0000819 Eth | $15,269.48 58,168.901 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0335% |
69 | ![]() | CRV-BTC | $0.2655 0.0000816 Eth | $13,512.52 58,354.100 CRV | 0.0336% |
70 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2647 0.0000811 Eth | $12,807.52 48,828.545 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0282% |
71 | ![]() | CRV-USDT | $0.2657 0.0000816 Eth | $12,278.14 47,198.282 CRV | 0.0272% |
72 | ![]() | CRV-USDT | $0.2656 0.0000817 Eth | $11,705.03 44,067.199 CRV | 0.0254% |
73 | ![]() | CRV-EUR | $0.2658 0.0000817 Eth | $9,785.08 36,818.070 CRV | 0.0212% |
74 | ![]() | CRV-BTC | $0.2641 0.0000812 Eth | $7,876.57 29,820.000 CRV | 0.0172% |
75 | ![]() | CRV-BTC | $0.2651 0.0000816 Eth | $7,198.51 27,465.203 CRV | 0.0158% |
76 | ![]() | CRV-GBP | $0.2654 0.0000816 Eth | $6,713.12 25,293.080 CRV | 0.0146% |
77 | ![]() | CRV-USDC | $0.2682 0.0000825 Eth | $6,634.61 25,830.813 CRV | 0.0149% |
78 | ![]() | CRV-TRY | $0.2668 0.0000821 Eth | $5,988.27 23,130.232 CRV | 0.0133% |
79 | ![]() | CRV-IDR | $0.264 0.0000811 Eth | $5,202.85 19,704.634 CRV | 0.0114% |
80 | ![]() | CRV-EUR | $0.2649 0.0000811 Eth | $4,583.59 17,305.567 CRV | 0.0100% |
81 | ![]() | CRV-USDT | $0.2659 0.0000817 Eth | $4,466.20 16,798.429 CRV | 0.0097% |
82 | ![]() | CRV-USDT | $0.2651 0.0000815 Eth | $3,948.79 14,897.138 CRV | 0.0086% |
83 | ![]() | CRV-USDT | $0.2664 0.0000820 Eth | $3,679.60 14,142.445 CRV | 0.0082% |
84 | ![]() | CRV-USD | $0.2675 0.0000823 Eth | $3,651.03 13,648.703 CRV | 0.0079% |
85 | ![]() | CRV-THB | $0.2678 0.0000823 Eth | $2,968.63 11,359.200 CRV | 0.0066% |
86 | ![]() | CRV-USD | $0.2659 0.0000818 Eth | $2,721.04 10,233.336 CRV | 0.0059% |
87 | ![]() | CRV-BRL | $0.2643 0.0000813 Eth | $2,341.46 8,933.123 CRV | 0.0052% |
88 | ![]() | CRV-BTC | $0.2657 0.0000818 Eth | $2,006.47 7,639.912 CRV | 0.0044% |
89 | ![]() | CRV-BTC | $0.2659 0.0000818 Eth | $1,735.62 6,527.100 CRV | 0.0038% |
90 | ![]() | CRV-USDT | $0.2676 0.0000822 Eth | $952.92 3,560.664 CRV | 0.0021% |
91 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2666 0.0000817 Eth | $898.57 3,407.416 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0020% |
92 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2651 0.0000813 Eth | $801.41 3,060.839 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0018% |
93 | ![]() | CRV-USDT | $0.2659 0.0000814 Eth | $579.92 2,181.317 CRV | 0.0013% |
94 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC3C7D422809852031B44AB29EEC9F1EFF2A58756 | $0.2659 0.0000815 Eth | $466.33 1,796.129 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0010% |
95 | ![]() | CRV-BTC | $0.2666 0.0000820 Eth | $358.62 1,345.250 CRV | 0.0008% |
96 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2647 0.0000811 Eth | $277.21 1,058.740 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0006% |
97 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2648 0.0000811 Eth | $250.62 952.835 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0005% |
98 | ![]() | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2656 0.0000816 Eth | $81.28 79.945 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0000% |
99 | ![]() | CRV-USD | $0.267 0.0000822 Eth | $47.43 180.688 CRV | 0.0001% |
100 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2666 0.0000815 Eth | $13.32 50.486 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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