Overview
Max Total Supply
2,147,882,520.22674288401085807 CRV
Holders
86,727 ( 0.010%)
Market
Price
$0.28 @ 0.000081 ETH
Onchain Market Cap
$600,117,896.14
Circulating Supply Market Cap
$332,629,005.23
Other Info
Token Contract (WITH 18 Decimals)
Balance
13.277841097472865811 CRVValue
$3.71 ( ~0.00106911116111688 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.279 0.0000806 Eth | $15,443,095.00 55,714,968.500 CRV | 18.6829% |
2 | ![]() | CRV-USDT | $0.2793 0.0000806 Eth | $8,752,422.00 31,576,563.435 CRV | 10.5886% |
3 | ![]() | CRV-USDT | $0.2793 0.0000806 Eth | $6,832,898.00 24,577,123.145 CRV | 8.2414% |
4 | ![]() | CRV-USDT | $0.2789 0.0000805 Eth | $5,257,518.00 18,961,298.100 CRV | 6.3583% |
5 | ![]() | CRV-USDT | $0.2795 0.0000806 Eth | $3,726,040.00 13,425,219.960 CRV | 4.5019% |
6 | ![]() | CRV-USDT | $0.2788 0.0000805 Eth | $3,521,129.00 12,630,663.140 CRV | 4.2354% |
7 | ![]() | CRV-ETH | $0.2788 0.0000805 Eth | $3,516,208.00 12,445,032.841 CRV | 4.1732% |
8 | ![]() | CRV-USDT | $0.2792 0.0000806 Eth | $2,971,094.00 10,642,326.836 CRV | 3.5687% |
9 | ![]() | CRV-USDT | $0.2791 0.0000805 Eth | $2,508,045.00 8,987,229.200 CRV | 3.0137% |
10 | ![]() | CRV-USDT | $0.2792 0.0000806 Eth | $2,374,414.00 8,555,368.350 CRV | 2.8689% |
11 | ![]() | CRV-USDT | $0.2796 0.0000807 Eth | $2,128,661.00 7,658,476.870 CRV | 2.5681% |
12 | ![]() | CRV-USDT | $0.2796 0.0000807 Eth | $2,117,060.00 7,599,336.650 CRV | 2.5483% |
13 | ![]() | CRV-USD | $0.28 0.0000809 Eth | $2,011,875.00 7,185,267.880 CRV | 2.4094% |
14 | ![]() | CRV-USDT | $0.2792 0.0000806 Eth | $1,838,637.00 6,624,514.400 CRV | 2.2214% |
15 | ![]() | CRV-USDT | $0.2793 0.0000803 Eth | $1,238,242.00 4,458,134.200 CRV | 1.4949% |
16 | ![]() | CRV-USDT | $0.2791 0.0000806 Eth | $1,206,855.00 4,324,449.700 CRV | 1.4501% |
17 | ![]() | CRV-USDT | $0.2794 0.0000804 Eth | $1,014,607.00 3,654,364.400 CRV | 1.2254% |
18 | ![]() | CRV-USDT | $0.2793 0.0000806 Eth | $987,175.00 3,534,551.800 CRV | 1.1852% |
19 | ![]() | CRV-TRY | $0.2811 0.0000812 Eth | $985,767.00 3,506,712.800 CRV | 1.1759% |
20 | ![]() | CRV-USDT | $0.2791 0.0000803 Eth | $898,236.00 3,218,882.739 CRV | 1.0794% |
21 | ![]() | CRV-USDT | $0.2792 0.0000803 Eth | $865,338.00 3,098,552.200 CRV | 1.0390% |
22 | ![]() | CRV-EUR | $0.2799 0.0000808 Eth | $805,238.00 2,876,466.456 CRV | 0.9646% |
23 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2769 0.0000797 Eth | $763,671.00 2,767,787.863 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.9281% |
24 | ![]() | CRV-USDT | $0.2787 0.0000805 Eth | $753,176.00 2,702,661.600 CRV | 0.9063% |
25 | ![]() | CRV-USDT | $0.2791 0.0000806 Eth | $717,018.00 2,569,257.510 CRV | 0.8615% |
26 | ![]() | CRV-USDT | $0.2793 0.0000806 Eth | $613,612.00 2,211,732.248 CRV | 0.7417% |
27 | ![]() | CRV-USDT | $0.2792 0.0000804 Eth | $543,199.00 1,945,716.100 CRV | 0.6525% |
28 | ![]() | CRV-XRP | $0.2783 0.0000801 Eth | $522,285.00 1,876,713.000 CRV | 0.6293% |
29 | ![]() | CRV-USDT | $0.2792 0.0000804 Eth | $444,584.00 1,592,089.470 CRV | 0.5339% |
30 | ![]() | CRV-USDT | $0.2783 0.0000800 Eth | $432,944.00 1,558,643.000 CRV | 0.5227% |
31 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2772 0.0000798 Eth | $423,730.00 1,527,422.413 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.5122% |
32 | ![]() | CRV-USDC | $0.279 0.0000803 Eth | $401,297.00 1,438,298.240 CRV | 0.4823% |
33 | ![]() | CRV-USDT | $0.2795 0.0000807 Eth | $374,920.00 1,341,503.800 CRV | 0.4498% |
34 | ![]() | CRV-USDT | $0.279 0.0000803 Eth | $355,629.00 1,274,445.601 CRV | 0.4274% |
35 | ![]() | CRV-USDT | $0.2786 0.0000804 Eth | $348,415.00 1,267,607.372 CRV | 0.4251% |
36 | ![]() | CRV-BTC | $0.2791 0.0000806 Eth | $331,549.00 1,191,454.600 CRV | 0.3995% |
37 | ![]() | CRV-USDT | $0.2803 0.0000806 Eth | $275,495.00 991,807.800 CRV | 0.3326% |
38 | ![]() | CRV-USDT | $0.2791 0.0000803 Eth | $249,555.00 894,048.515 CRV | 0.2998% |
39 | ![]() | CRV-USDT | $0.2793 0.0000803 Eth | $247,996.00 893,813.485 CRV | 0.2997% |
40 | ![]() | CRV-USDT | $0.2792 0.0000806 Eth | $226,732.00 817,356.762 CRV | 0.2741% |
41 | ![]() | CRV-TRY | $0.2814 0.0000810 Eth | $203,125.00 721,765.690 CRV | 0.2420% |
42 | ![]() | CRV-USD | $0.279 0.0000806 Eth | $195,568.00 700,962.248 CRV | 0.2351% |
43 | ![]() | CRV-TRY | $0.2799 0.0000808 Eth | $192,899.00 689,020.400 CRV | 0.2310% |
44 | ![]() | CRV-USDT | $0.2791 0.0000806 Eth | $188,474.00 675,349.040 CRV | 0.2265% |
45 | ![]() | CRV-THB | $0.2794 0.0000804 Eth | $186,272.00 666,743.573 CRV | 0.2236% |
46 | ![]() | CRV-USDT | $0.2795 0.0000804 Eth | $166,882.00 597,133.091 CRV | 0.2002% |
47 | ![]() | CRV-USDT | $0.279 0.0000806 Eth | $158,364.00 569,363.967 CRV | 0.1909% |
48 | ![]() | CRV-USDT | $0.2788 0.0000802 Eth | $158,256.00 571,893.199 CRV | 0.1918% |
49 | ![]() | CRV-USDC | $0.2796 0.0000807 Eth | $146,493.00 528,005.900 CRV | 0.1771% |
50 | ![]() | CRV-USDC | $0.2777 0.0000802 Eth | $144,009.00 518,145.340 CRV | 0.1737% |
51 | ![]() | CRV-EUR | $0.2801 0.0000809 Eth | $143,549.00 512,564.541 CRV | 0.1719% |
52 | ![]() | CRV-USDT | $0.2794 0.0000807 Eth | $142,797.00 515,095.600 CRV | 0.1727% |
53 | ![]() | CRV-EUR | $0.28 0.0000805 Eth | $138,464.00 502,313.250 CRV | 0.1684% |
54 | ![]() | CRV-USDT | $0.2793 0.0000804 Eth | $131,068.00 472,429.300 CRV | 0.1584% |
55 | ![]() | CRV-USD | $0.279 0.0000806 Eth | $123,872.00 443,984.440 CRV | 0.1489% |
56 | ![]() | CRV-USDT | $0.2781 0.0000803 Eth | $122,013.00 438,774.000 CRV | 0.1471% |
57 | ![]() | CRV-KRW | $0.2815 0.0000810 Eth | $117,271.00 416,647.104 CRV | 0.1397% |
58 | ![]() | CRV-USDT | $0.2791 0.0000805 Eth | $105,200.00 376,936.115 CRV | 0.1264% |
59 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2802 0.0000807 Eth | $95,152.00 340,431.783 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.1142% |
60 | ![]() | CRV-USDT | $0.2793 0.0000803 Eth | $89,860.00 323,723.200 CRV | 0.1086% |
61 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2778 0.0000800 Eth | $85,539.00 308,825.960 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.1036% |
62 | ![]() | CRV-BTC | $0.2811 0.0000812 Eth | $80,952.00 288,005.400 CRV | 0.0966% |
63 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2796 0.0000805 Eth | $76,841.00 274,498.805 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0920% |
64 | ![]() | CRV-USDT | $0.2793 0.0000803 Eth | $74,060.00 265,188.170 CRV | 0.0889% |
65 | ![]() | CRV-EUR | $0.2796 0.0000807 Eth | $61,687.00 220,604.400 CRV | 0.0740% |
66 | ![]() | CRV-TRY | $0.279 0.0000805 Eth | $60,368.00 216,391.584 CRV | 0.0726% |
67 | ![]() | CRV-USDT | $0.2803 0.0000806 Eth | $52,495.00 187,300.855 CRV | 0.0628% |
68 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2779 0.0000800 Eth | $51,448.00 184,608.999 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0619% |
69 | ![]() | CRV-USD | $0.2796 0.0000807 Eth | $45,946.00 164,328.762 CRV | 0.0551% |
70 | ![]() | CRV-BTC | $0.2791 0.0000805 Eth | $44,212.00 159,464.036 CRV | 0.0535% |
71 | ![]() | CRV-USDT | $0.2791 0.0000805 Eth | $44,001.00 163,036.039 CRV | 0.0547% |
72 | ![]() | CRV-BTC | $0.2795 0.0000804 Eth | $33,515.00 136,222.300 CRV | 0.0457% |
73 | ![]() | CRV-ETH | $0.28 0.0000805 Eth | $29,993.00 107,131.748 CRV | 0.0359% |
74 | ![]() | CRV-USDC | $0.2787 0.0000804 Eth | $28,110.00 101,896.197 CRV | 0.0342% |
75 | ![]() | CRV-USD | $0.2802 0.0000807 Eth | $20,208.00 72,119.664 CRV | 0.0242% |
76 | ![]() | CRV-BTC | $0.2794 0.0000804 Eth | $19,938.58 71,352.000 CRV | 0.0239% |
77 | ![]() | CRV-GBP | $0.2789 0.0000805 Eth | $19,104.29 68,489.060 CRV | 0.0230% |
78 | ![]() | CRV-TRY | $0.2802 0.0000808 Eth | $15,418.68 54,849.560 CRV | 0.0184% |
79 | ![]() | CRV-BTC | $0.2784 0.0000803 Eth | $14,869.68 53,479.661 CRV | 0.0179% |
80 | ![]() | CRV-BTC | $0.2811 0.0000812 Eth | $14,518.07 51,651.480 CRV | 0.0173% |
81 | ![]() | CRV-USDT | $0.2789 0.0000805 Eth | $14,413.21 52,006.178 CRV | 0.0174% |
82 | ![]() | CRV-USDT | $0.2791 0.0000805 Eth | $12,143.67 43,509.705 CRV | 0.0146% |
83 | ![]() | CRV-USDT | $0.2791 0.0000803 Eth | $10,621.22 38,061.789 CRV | 0.0128% |
84 | ![]() | CRV-IDR | $0.2788 0.0000805 Eth | $8,564.79 30,715.543 CRV | 0.0103% |
85 | ![]() | CRV-THB | $0.2782 0.0000800 Eth | $8,522.01 30,791.500 CRV | 0.0103% |
86 | ![]() | CRV-BTC | $0.2791 0.0000806 Eth | $7,372.83 26,419.300 CRV | 0.0089% |
87 | ![]() | CRV-USD | $0.2797 0.0000807 Eth | $6,815.85 24,365.799 CRV | 0.0082% |
88 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2778 0.0000800 Eth | $6,752.33 24,211.211 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0081% |
89 | ![]() | CRV-USDT | $0.2782 0.0000801 Eth | $5,291.02 19,058.913 CRV | 0.0064% |
90 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2768 0.0000797 Eth | $4,865.36 17,559.592 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0059% |
91 | ![]() | CRV-XBT | $0.2811 0.0000812 Eth | $3,483.11 12,391.990 CRV | 0.0042% |
92 | ![]() | CRV-EUR | $0.2785 0.0000802 Eth | $2,874.47 10,321.016 CRV | 0.0035% |
93 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2756 0.0000789 Eth | $2,401.72 8,712.956 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0029% |
94 | ![]() | CRV-BRL | $0.2807 0.0000810 Eth | $2,063.15 7,351.269 CRV | 0.0025% |
95 | ![]() | CRV-USD | $0.2818 0.0000814 Eth | $1,912.38 6,786.293 CRV | 0.0023% |
96 | ![]() | CRV-BTC | $0.2788 0.0000803 Eth | $1,562.68 5,605.641 CRV | 0.0019% |
97 | ![]() | CRV-BTC | $0.2774 0.0000799 Eth | $1,112.40 4,050.910 CRV | 0.0014% |
98 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2794 0.0000801 Eth | $575.02 2,038.491 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0007% |
99 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2818 0.0000808 Eth | $199.68 711.720 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0002% |
100 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.2789 0.0000805 Eth | $184.93 695.518 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0002% |
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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