Overview
Max Total Supply
2,150,086,512.213801291942146131 CRV
Holders
86,795 (0.00%)
Market
Price
$0.26 @ 0.000081 ETH (+0.15%)
Onchain Market Cap
$566,272,830.33
Circulating Supply Market Cap
$312,860,544.27
Other Info
Token Contract (WITH 18 Decimals)
Balance
3.676032225505188344 CRVValue
$0.97 ( ~0.000296929731900892 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $8,469,775.00 31,893,877.700 CRV | 16.3503% |
2 | ![]() | CRV-USDT | $0.2623 0.0000803 Eth | $6,328,588.00 23,824,222.621 CRV | 12.2135% |
3 | ![]() | CRV-USDT | $0.2627 0.0000804 Eth | $4,892,196.00 18,405,625.924 CRV | 9.4356% |
4 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $3,655,352.00 13,767,986.500 CRV | 7.0581% |
5 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $2,680,235.00 10,088,682.570 CRV | 5.1719% |
6 | ![]() | CRV-USDT | $0.2624 0.0000804 Eth | $2,593,822.00 9,766,554.000 CRV | 5.0068% |
7 | ![]() | CRV-USDT | $0.2624 0.0000804 Eth | $2,515,895.00 9,463,830.220 CRV | 4.8516% |
8 | ![]() | CRV-USDT | $0.2622 0.0000804 Eth | $2,174,505.00 8,293,876.110 CRV | 4.2518% |
9 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $2,065,347.00 7,869,106.255 CRV | 4.0341% |
10 | ![]() | CRV-USDT | $0.2624 0.0000804 Eth | $2,039,312.00 7,680,011.928 CRV | 3.9371% |
11 | ![]() | CRV-USDC | $0.2622 0.0000803 Eth | $1,393,516.00 5,247,544.664 CRV | 2.6901% |
12 | ![]() | CRV-USDT | $0.2624 0.0000804 Eth | $1,255,592.00 0.000 CRV | 0.0000% |
13 | ![]() | CRV-USDT | $0.2624 0.0000803 Eth | $1,197,992.00 4,508,636.900 CRV | 2.3113% |
14 | ![]() | CRV-USDT | $0.2623 0.0000804 Eth | $744,068.00 2,801,538.290 CRV | 1.4362% |
15 | ![]() | CRV-USDT | $0.2623 0.0000804 Eth | $680,690.00 2,563,495.300 CRV | 1.3142% |
16 | ![]() | CRV-USDT | $0.2623 0.0000804 Eth | $668,504.00 2,548,796.420 CRV | 1.3066% |
17 | ![]() | CRV-USD | $0.2621 0.0000803 Eth | $643,229.00 2,454,135.520 CRV | 1.2581% |
18 | ![]() | CRV-USDT | $0.2624 0.0000803 Eth | $594,541.00 2,239,088.700 CRV | 1.1479% |
19 | ![]() | CRV-USDT | $0.2624 0.0000803 Eth | $581,385.00 2,215,631.900 CRV | 1.1358% |
20 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $558,614.00 2,128,114.500 CRV | 1.0910% |
21 | ![]() | CRV-USDT | $0.2623 0.0000804 Eth | $468,201.00 1,784,440.300 CRV | 0.9148% |
22 | ![]() | CRV-USDT | $0.2623 0.0000804 Eth | $421,009.00 1,605,130.700 CRV | 0.8229% |
23 | ![]() | CRV-USDT | $0.2618 0.0000802 Eth | $379,335.00 1,449,104.000 CRV | 0.7429% |
24 | ![]() | CRV-USDT | $0.2624 0.0000803 Eth | $360,078.00 1,372,394.224 CRV | 0.7036% |
25 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $335,820.00 1,264,929.884 CRV | 0.6485% |
26 | ![]() | CRV-USDT | $0.2623 0.0000804 Eth | $321,165.00 1,224,512.600 CRV | 0.6277% |
27 | ![]() | CRV-XRP | $0.262 0.0000803 Eth | $287,145.00 1,096,096.560 CRV | 0.5619% |
28 | ![]() | CRV-USDT | $0.2632 0.0000806 Eth | $286,247.00 1,077,256.100 CRV | 0.5523% |
29 | ![]() | CRV-USDC | $0.262 0.0000803 Eth | $282,778.00 1,079,406.010 CRV | 0.5534% |
30 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $273,652.00 1,042,596.396 CRV | 0.5345% |
31 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2645 0.0000810 Eth | $245,054.00 916,365.374 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4698% |
32 | ![]() | CRV-USDT | $0.2624 0.0000804 Eth | $230,955.00 880,289.600 CRV | 0.4513% |
33 | ![]() | CRV-USDT | $0.2626 0.0000805 Eth | $197,071.00 750,510.900 CRV | 0.3847% |
34 | ![]() | CRV-USDT | $0.2631 0.0000806 Eth | $180,093.00 678,392.400 CRV | 0.3478% |
35 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2627 0.0000805 Eth | $174,944.00 654,313.379 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.3354% |
36 | ![]() | CRV-TRY | $0.262 0.0000803 Eth | $166,885.00 624,808.300 CRV | 0.3203% |
37 | ![]() | CRV-TRY | $0.2644 0.0000810 Eth | $163,092.00 616,880.700 CRV | 0.3162% |
38 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $151,646.00 570,713.120 CRV | 0.2926% |
39 | ![]() | CRV-USD | $0.2636 0.0000806 Eth | $140,449.00 532,812.000 CRV | 0.2731% |
40 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $139,675.00 525,529.609 CRV | 0.2694% |
41 | ![]() | CRV-BTC | $0.2624 0.0000803 Eth | $131,244.00 496,364.100 CRV | 0.2545% |
42 | ![]() | CRV-USDC | $0.2614 0.0000800 Eth | $130,010.00 488,352.770 CRV | 0.2504% |
43 | ![]() | CRV-USDT | $0.2624 0.0000803 Eth | $129,143.00 492,209.620 CRV | 0.2523% |
44 | ![]() | CRV-USDT | $0.2624 0.0000803 Eth | $117,306.00 441,758.800 CRV | 0.2265% |
45 | ![]() | CRV-USDT | $0.262 0.0000802 Eth | $103,733.00 390,561.300 CRV | 0.2002% |
46 | ![]() | CRV-USDT | $0.2628 0.0000805 Eth | $100,640.00 379,616.128 CRV | 0.1946% |
47 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2648 0.0000811 Eth | $98,751.00 373,016.893 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.1912% |
48 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $94,276.00 354,981.100 CRV | 0.1820% |
49 | ![]() | CRV-TRY | $0.2632 0.0000806 Eth | $88,495.00 336,266.940 CRV | 0.1724% |
50 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2638 0.0000807 Eth | $71,643.00 269,976.270 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1384% |
51 | ![]() | CRV-BTC | $0.2618 0.0000801 Eth | $64,726.00 244,265.996 CRV | 0.1252% |
52 | ![]() | CRV-USDT | $0.262 0.0000803 Eth | $63,449.00 242,188.400 CRV | 0.1242% |
53 | ![]() | CRV-USDC | $0.2631 0.0000806 Eth | $62,429.00 234,554.100 CRV | 0.1202% |
54 | ![]() | CRV-USDT | $0.2627 0.0000804 Eth | $56,926.00 216,695.599 CRV | 0.1111% |
55 | ![]() | CRV-EUR | $0.2634 0.0000807 Eth | $56,892.00 215,968.054 CRV | 0.1107% |
56 | ![]() | CRV-USDT | $0.263 0.0000805 Eth | $50,434.00 191,783.021 CRV | 0.0983% |
57 | ![]() | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2639 0.0000807 Eth | $48,119.00 48,747.514 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0250% |
58 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2633 0.0000807 Eth | $45,400.00 169,555.810 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0869% |
59 | ![]() | CRV-THB | $0.2636 0.0000808 Eth | $44,406.00 168,446.129 CRV | 0.0864% |
60 | ![]() | CRV-USD | $0.262 0.0000802 Eth | $43,694.00 166,769.449 CRV | 0.0855% |
61 | ![]() | CRV-USDT | $0.262 0.0000802 Eth | $42,121.00 160,784.157 CRV | 0.0824% |
62 | ![]() | CRV-USDT | $0.2621 0.0000803 Eth | $41,966.00 162,389.200 CRV | 0.0832% |
63 | ![]() | CRV-USD | $0.2626 0.0000804 Eth | $36,077.00 137,382.708 CRV | 0.0704% |
64 | ![]() | CRV-USDT | $0.2626 0.0000804 Eth | $30,746.00 117,104.399 CRV | 0.0600% |
65 | ![]() | CRV-ETH | $0.2623 0.0000804 Eth | $27,178.00 103,622.099 CRV | 0.0531% |
66 | ![]() | CRV-BTC | $0.2643 0.0000810 Eth | $23,803.00 90,069.040 CRV | 0.0462% |
67 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.262 0.0000803 Eth | $20,816.00 79,420.883 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0407% |
68 | ![]() | CRV-USDT | $0.2625 0.0000804 Eth | $19,530.93 72,920.692 CRV | 0.0374% |
69 | ![]() | CRV-USD | $0.2619 0.0000803 Eth | $17,157.85 65,512.969 CRV | 0.0336% |
70 | ![]() | CRV-TRY | $0.2638 0.0000808 Eth | $14,374.64 53,876.467 CRV | 0.0276% |
71 | ![]() | CRV-EUR | $0.2634 0.0000807 Eth | $14,256.13 54,120.110 CRV | 0.0277% |
72 | ![]() | CRV-GBP | $0.2634 0.0000807 Eth | $13,927.31 52,873.270 CRV | 0.0271% |
73 | ![]() | CRV-BTC | $0.2622 0.0000804 Eth | $13,552.83 69,781.300 CRV | 0.0358% |
74 | ![]() | CRV-IDR | $0.2647 0.0000811 Eth | $12,643.93 47,774.859 CRV | 0.0245% |
75 | ![]() | CRV-USD | $0.2628 0.0000805 Eth | $12,473.49 47,460.189 CRV | 0.0243% |
76 | ![]() | CRV-BTC | $0.2616 0.0000802 Eth | $10,510.73 40,184.000 CRV | 0.0206% |
77 | ![]() | CRV-USDT | $0.2637 0.0000808 Eth | $9,727.33 36,554.308 CRV | 0.0187% |
78 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2636 0.0000808 Eth | $9,004.82 33,191.793 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0170% |
79 | ![]() | CRV-BTC | $0.2624 0.0000803 Eth | $8,731.89 32,867.752 CRV | 0.0168% |
80 | ![]() | CRV-USDT | $0.2608 0.0000798 Eth | $8,316.12 31,890.405 CRV | 0.0163% |
81 | ![]() | CRV-USD | $0.263 0.0000806 Eth | $8,228.89 30,422.865 CRV | 0.0156% |
82 | ![]() | CRV-USDT | $0.2626 0.0000805 Eth | $5,758.80 21,931.645 CRV | 0.0112% |
83 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2631 0.0000804 Eth | $4,516.45 16,916.347 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0087% |
84 | ![]() | CRV-USDT | $0.263 0.0000806 Eth | $4,154.06 15,400.657 CRV | 0.0079% |
85 | ![]() | CRV-USDT | $0.2638 0.0000809 Eth | $3,270.88 12,302.311 CRV | 0.0063% |
86 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2633 0.0000807 Eth | $2,594.85 9,732.180 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0050% |
87 | ![]() | CRV-USD | $0.2636 0.0000808 Eth | $2,331.36 8,844.327 CRV | 0.0045% |
88 | ![]() | CRV-BTC | $0.2624 0.0000803 Eth | $2,168.82 8,184.902 CRV | 0.0042% |
89 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2633 0.0000806 Eth | $1,492.32 5,594.688 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0029% |
90 | ![]() | CRV-BTC | $0.2643 0.0000810 Eth | $1,477.26 5,584.173 CRV | 0.0029% |
91 | ![]() | CRV-BTC | $0.2616 0.0000802 Eth | $1,015.53 3,882.451 CRV | 0.0020% |
92 | ![]() | CRV-USDT | $0.2628 0.0000804 Eth | $579.77 2,206.218 CRV | 0.0011% |
93 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC3C7D422809852031B44AB29EEC9F1EFF2A58756 | $0.2648 0.0000811 Eth | $455.57 1,759.871 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0009% |
94 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2633 0.0000806 Eth | $339.94 1,280.336 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0007% |
95 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2643 0.0000809 Eth | $276.29 1,052.467 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0005% |
96 | ![]() | CRV-USDT | $0.2623 0.0000804 Eth | $188.09 717.138 CRV | 0.0004% |
97 | ![]() | CRV-BRL | $0.2623 0.0000804 Eth | $40.33 153.763 CRV | 0.0001% |
98 | ![]() | CRV-EUR | $0.2631 0.0000806 Eth | $39.72 151.302 CRV | 0.0001% |
99 | ![]() | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $0.2651 0.0000810 Eth | $35.19 131.507 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0001% |
100 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2634 0.0000806 Eth | $30.56 114.244 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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