Overview
Max Total Supply
2,149,372,063.588045663469600397 CRV
Holders
86,792 ( -0.005%)
Market
Price
$0.26 @ 0.000081 ETH (-1.26%)
Onchain Market Cap
$563,955,081.50
Circulating Supply Market Cap
$311,748,522.47
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.000001112497629854 CRVValue
$0.00 ( ~0 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2647 0.0000819 Eth | $6,572,464.00 24,765,390.400 CRV | 15.3339% |
2 | ![]() | CRV-USDT | $0.2646 0.0000821 Eth | $5,828,675.00 21,937,478.032 CRV | 13.5830% |
3 | ![]() | CRV-USDT | $0.2643 0.0000821 Eth | $4,045,502.00 15,225,322.523 CRV | 9.4270% |
4 | ![]() | CRV-USDT | $0.2647 0.0000820 Eth | $2,791,671.00 10,516,163.400 CRV | 6.5113% |
5 | ![]() | CRV-USDT | $0.2635 0.0000818 Eth | $2,625,130.00 9,859,487.400 CRV | 6.1047% |
6 | ![]() | CRV-USDT | $0.2634 0.0000818 Eth | $2,461,610.00 9,345,498.510 CRV | 5.7864% |
7 | ![]() | CRV-USDT | $0.2637 0.0000819 Eth | $2,042,929.00 7,747,499.600 CRV | 4.7970% |
8 | ![]() | CRV-USDT | $0.2645 0.0000820 Eth | $1,847,612.00 6,960,889.190 CRV | 4.3100% |
9 | ![]() | CRV-USDT | $0.2643 0.0000820 Eth | $1,582,913.00 5,945,090.500 CRV | 3.6810% |
10 | ![]() | CRV-USDT | $0.2647 0.0000821 Eth | $1,574,237.00 5,931,680.568 CRV | 3.6727% |
11 | ![]() | CRV-USDT | $0.2648 0.0000821 Eth | $1,167,747.00 4,401,467.560 CRV | 2.7252% |
12 | ![]() | CRV-USDT | $0.2636 0.0000819 Eth | $985,140.00 0.000 CRV | 0.0000% |
13 | ![]() | CRV-USDT | $0.2649 0.0000821 Eth | $739,988.00 2,779,301.540 CRV | 1.7209% |
14 | ![]() | CRV-USD | $0.2641 0.0000820 Eth | $695,846.00 2,634,783.040 CRV | 1.6314% |
15 | ![]() | CRV-USDT | $0.2634 0.0000818 Eth | $521,227.00 1,964,046.500 CRV | 1.2161% |
16 | ![]() | CRV-USDT | $0.2635 0.0000819 Eth | $517,750.00 1,964,889.840 CRV | 1.2166% |
17 | ![]() | CRV-USDT | $0.2633 0.0000818 Eth | $472,908.00 1,781,180.000 CRV | 1.1028% |
18 | ![]() | CRV-USDT | $0.2651 0.0000822 Eth | $461,408.00 1,740,486.500 CRV | 1.0777% |
19 | ![]() | CRV-USDT | $0.2649 0.0000822 Eth | $435,272.00 1,643,289.000 CRV | 1.0175% |
20 | ![]() | CRV-USDT | $0.2634 0.0000818 Eth | $361,777.00 1,372,504.600 CRV | 0.8498% |
21 | ![]() | CRV-USDT | $0.2649 0.0000821 Eth | $349,673.00 1,319,994.100 CRV | 0.8173% |
22 | ![]() | CRV-USDT | $0.2637 0.0000819 Eth | $348,491.00 1,321,539.600 CRV | 0.8183% |
23 | ![]() | CRV-USDT | $0.2626 0.0000816 Eth | $294,002.00 1,105,308.400 CRV | 0.6844% |
24 | ![]() | CRV-USDT | $0.2641 0.0000820 Eth | $259,182.00 976,716.096 CRV | 0.6048% |
25 | ![]() | CRV-USDT | $0.2646 0.0000822 Eth | $246,154.00 930,175.100 CRV | 0.5759% |
26 | ![]() | CRV-USDC | $0.264 0.0000820 Eth | $236,507.00 895,900.870 CRV | 0.5547% |
27 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.264 0.0000820 Eth | $234,173.00 894,317.573 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.5537% |
28 | ![]() | CRV-XRP | $0.2634 0.0000818 Eth | $229,563.00 871,525.950 CRV | 0.5396% |
29 | ![]() | CRV-USDT | $0.2647 0.0000822 Eth | $226,119.00 854,230.400 CRV | 0.5289% |
30 | ![]() | CRV-USDT | $0.2643 0.0000820 Eth | $219,671.00 831,132.200 CRV | 0.5146% |
31 | ![]() | CRV-EUR | $0.2639 0.0000818 Eth | $216,422.00 820,141.368 CRV | 0.5078% |
32 | ![]() | CRV-USDT | $0.2634 0.0000818 Eth | $208,876.00 793,116.098 CRV | 0.4911% |
33 | ![]() | CRV-USDT | $0.265 0.0000822 Eth | $179,226.00 676,310.550 CRV | 0.4187% |
34 | ![]() | CRV-TRY | $0.2653 0.0000824 Eth | $156,822.00 591,131.900 CRV | 0.3660% |
35 | ![]() | CRV-TRY | $0.2647 0.0000819 Eth | $145,151.00 541,914.600 CRV | 0.3355% |
36 | ![]() | CRV-USDC | $0.2653 0.0000823 Eth | $138,264.00 517,933.840 CRV | 0.3207% |
37 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2612 0.0000811 Eth | $137,284.00 514,878.939 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3188% |
38 | ![]() | CRV-USD | $0.264 0.0000819 Eth | $131,148.00 496,771.977 CRV | 0.3076% |
39 | ![]() | CRV-USDT | $0.2629 0.0000816 Eth | $126,525.00 477,880.000 CRV | 0.2959% |
40 | ![]() | CRV-USDT | $0.2648 0.0000821 Eth | $123,071.00 463,190.645 CRV | 0.2868% |
41 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2635 0.0000818 Eth | $119,181.00 457,269.599 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.2831% |
42 | ![]() | CRV-USDT | $0.2634 0.0000818 Eth | $113,355.00 426,203.800 CRV | 0.2639% |
43 | ![]() | CRV-USDT | $0.2636 0.0000817 Eth | $113,250.00 429,619.740 CRV | 0.2660% |
44 | ![]() | CRV-USDT | $0.2632 0.0000818 Eth | $108,409.00 408,694.797 CRV | 0.2531% |
45 | ![]() | CRV-USDT | $0.263 0.0000816 Eth | $103,997.00 390,480.000 CRV | 0.2418% |
46 | ![]() | CRV-THB | $0.2653 0.0000823 Eth | $99,502.00 375,066.207 CRV | 0.2322% |
47 | ![]() | CRV-USDT | $0.2648 0.0000821 Eth | $92,512.00 349,102.196 CRV | 0.2162% |
48 | ![]() | CRV-BTC | $0.2602 0.0000805 Eth | $90,251.00 347,010.500 CRV | 0.2149% |
49 | ![]() | CRV-USDT | $0.2639 0.0000818 Eth | $89,608.00 337,402.465 CRV | 0.2089% |
50 | ![]() | CRV-USDT | $0.2635 0.0000819 Eth | $83,301.00 313,467.200 CRV | 0.1941% |
51 | ![]() | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2639 0.0000820 Eth | $69,245.00 70,089.147 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0434% |
52 | ![]() | CRV-TRY | $0.2665 0.0000828 Eth | $67,351.00 252,722.090 CRV | 0.1565% |
53 | ![]() | CRV-USDT | $0.264 0.0000820 Eth | $64,116.00 240,849.172 CRV | 0.1491% |
54 | ![]() | CRV-BTC | $0.2602 0.0000807 Eth | $56,285.00 215,921.124 CRV | 0.1337% |
55 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2625 0.0000814 Eth | $55,746.00 211,843.300 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1312% |
56 | ![]() | CRV-USD | $0.263 0.0000816 Eth | $51,396.00 195,421.430 CRV | 0.1210% |
57 | ![]() | CRV-USDT | $0.263 0.0000816 Eth | $48,746.00 185,340.600 CRV | 0.1148% |
58 | ![]() | CRV-USDT | $0.2638 0.0000819 Eth | $45,177.00 171,250.027 CRV | 0.1060% |
59 | ![]() | CRV-USDT | $0.264 0.0000820 Eth | $44,539.00 168,706.886 CRV | 0.1045% |
60 | ![]() | CRV-USDT | $0.265 0.0000822 Eth | $44,022.00 166,118.567 CRV | 0.1029% |
61 | ![]() | CRV-USDT | $0.264 0.0000819 Eth | $42,681.00 162,099.355 CRV | 0.1004% |
62 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2626 0.0000817 Eth | $35,474.00 134,281.693 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0831% |
63 | ![]() | CRV-USDC | $0.2636 0.0000816 Eth | $31,759.00 119,374.000 CRV | 0.0739% |
64 | ![]() | CRV-USDT | $0.2637 0.0000818 Eth | $28,147.00 106,754.687 CRV | 0.0661% |
65 | ![]() | CRV-EUR | $0.2625 0.0000815 Eth | $24,625.00 93,793.560 CRV | 0.0581% |
66 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2624 0.0000816 Eth | $20,151.00 77,342.505 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0479% |
67 | ![]() | CRV-BTC | $0.2609 0.0000810 Eth | $14,531.87 55,695.000 CRV | 0.0345% |
68 | ![]() | CRV-BTC | $0.2629 0.0000816 Eth | $14,523.50 55,238.000 CRV | 0.0342% |
69 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2618 0.0000813 Eth | $14,256.49 53,909.641 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0334% |
70 | ![]() | CRV-BTC | $0.2636 0.0000818 Eth | $13,380.45 56,991.900 CRV | 0.0353% |
71 | ![]() | CRV-IDR | $0.263 0.0000817 Eth | $13,120.30 49,886.957 CRV | 0.0309% |
72 | ![]() | CRV-USDT | $0.2644 0.0000822 Eth | $11,591.49 43,501.586 CRV | 0.0269% |
73 | ![]() | CRV-BTC | $0.261 0.0000811 Eth | $9,475.73 36,310.600 CRV | 0.0225% |
74 | ![]() | CRV-USDC | $0.2607 0.0000809 Eth | $8,281.47 31,228.783 CRV | 0.0193% |
75 | ![]() | CRV-THB | $0.2648 0.0000821 Eth | $7,717.28 29,213.900 CRV | 0.0181% |
76 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2635 0.0000818 Eth | $7,624.32 28,812.065 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0178% |
77 | ![]() | CRV-USD | $0.2647 0.0000821 Eth | $7,055.90 26,653.177 CRV | 0.0165% |
78 | ![]() | CRV-BTC | $0.2616 0.0000812 Eth | $6,915.26 26,464.945 CRV | 0.0164% |
79 | ![]() | CRV-GBP | $0.2615 0.0000812 Eth | $6,665.96 25,493.110 CRV | 0.0158% |
80 | ![]() | CRV-USD | $0.2647 0.0000821 Eth | $5,556.67 20,992.328 CRV | 0.0130% |
81 | ![]() | CRV-TRY | $0.2662 0.0000826 Eth | $5,522.74 20,675.854 CRV | 0.0128% |
82 | ![]() | CRV-USDT | $0.2636 0.0000819 Eth | $4,665.14 17,697.755 CRV | 0.0110% |
83 | ![]() | CRV-USDT | $0.2627 0.0000816 Eth | $3,950.39 14,842.490 CRV | 0.0092% |
84 | ![]() | CRV-USDT | $0.265 0.0000823 Eth | $3,472.42 13,103.430 CRV | 0.0081% |
85 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2635 0.0000818 Eth | $3,252.71 12,367.710 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0077% |
86 | ![]() | CRV-BTC | $0.2596 0.0000805 Eth | $3,223.42 12,426.373 CRV | 0.0077% |
87 | ![]() | CRV-USD | $0.2633 0.0000816 Eth | $2,669.97 10,140.780 CRV | 0.0063% |
88 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $0.2615 0.0000812 Eth | $2,275.90 8,610.586 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0053% |
89 | ![]() | CRV-EUR | $0.2655 0.0000823 Eth | $2,194.53 8,264.850 CRV | 0.0051% |
90 | ![]() | CRV-USDT | $0.2635 0.0000818 Eth | $2,004.77 7,608.735 CRV | 0.0047% |
91 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2644 0.0000820 Eth | $1,985.20 7,591.626 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0047% |
92 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2671 0.0000827 Eth | $1,141.14 4,304.603 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0027% |
93 | ![]() | CRV-BTC | $0.2596 0.0000807 Eth | $1,063.93 4,075.164 CRV | 0.0025% |
94 | ![]() | CRV-USDT | $0.2636 0.0000819 Eth | $579.80 2,199.522 CRV | 0.0014% |
95 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $0.2614 0.0000812 Eth | $561.09 2,157.659 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0013% |
96 | ![]() | CRV-BTC | $0.2609 0.0000811 Eth | $338.23 1,296.228 CRV | 0.0008% |
97 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC3C7D422809852031B44AB29EEC9F1EFF2A58756 | $0.262 0.0000811 Eth | $332.89 1,247.909 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0008% |
98 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2643 0.0000818 Eth | $277.47 1,036.986 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0006% |
99 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2623 0.0000814 Eth | $122.01 464.685 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0003% |
100 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2626 0.0000816 Eth | $21.47 81.882 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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