Overview
Max Total Supply
2,150,331,123.6513233017115376 CRV
Holders
86,814 ( -0.002%)
Market
Price
$0.26 @ 0.000079 ETH (+0.11%)
Onchain Market Cap
$564,107,454.30
Circulating Supply Market Cap
$312,503,071.78
Other Info
Token Contract (WITH 18 Decimals)
Balance
222.234639173097827359 CRVValue
$58.30 ( ~0.0175674422490721 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2609 0.0000788 Eth | $7,741,774.00 29,332,024.400 CRV | 15.6603% |
2 | ![]() | CRV-USDT | $0.2608 0.0000788 Eth | $5,746,993.00 21,810,416.696 CRV | 11.6445% |
3 | ![]() | CRV-USDT | $0.2608 0.0000788 Eth | $5,566,275.00 21,094,293.855 CRV | 11.2622% |
4 | ![]() | CRV-USDT | $0.2606 0.0000787 Eth | $3,184,466.00 12,064,877.400 CRV | 6.4414% |
5 | ![]() | CRV-USDT | $0.2606 0.0000787 Eth | $2,454,092.00 9,316,759.300 CRV | 4.9742% |
6 | ![]() | CRV-USDT | $0.2606 0.0000787 Eth | $2,445,720.00 9,268,132.870 CRV | 4.9482% |
7 | ![]() | CRV-USDT | $0.2609 0.0000788 Eth | $2,324,295.00 8,910,157.320 CRV | 4.7571% |
8 | ![]() | CRV-USDT | $0.2608 0.0000788 Eth | $2,261,377.00 8,585,004.830 CRV | 4.5835% |
9 | ![]() | CRV-USDT | $0.2613 0.0000788 Eth | $1,957,013.00 7,490,885.304 CRV | 3.9994% |
10 | ![]() | CRV-USDT | $0.261 0.0000787 Eth | $1,857,759.00 7,038,838.848 CRV | 3.7580% |
11 | ![]() | CRV-USDT | $0.261 0.0000788 Eth | $1,599,804.00 6,059,645.300 CRV | 3.2352% |
12 | ![]() | CRV-USD | $0.2605 0.0000787 Eth | $840,185.00 3,225,277.720 CRV | 1.7220% |
13 | ![]() | CRV-USDT | $0.2606 0.0000786 Eth | $619,476.00 2,347,143.800 CRV | 1.2531% |
14 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2606 0.0000786 Eth | $615,804.00 2,360,047.995 0XD533A949740BB3306D119CC777FA900BA034CD52 | 1.2600% |
15 | ![]() | CRV-USDT | $0.2608 0.0000787 Eth | $612,185.00 2,347,761.780 CRV | 1.2535% |
16 | ![]() | CRV-USDT | $0.2604 0.0000787 Eth | $584,045.00 2,243,204.700 CRV | 1.1976% |
17 | ![]() | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2617 0.0000790 Eth | $579,954.00 175.219 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0001% |
18 | ![]() | CRV-USDT | $0.2607 0.0000787 Eth | $549,789.00 2,083,757.100 CRV | 1.1125% |
19 | ![]() | CRV-USDT | $0.2599 0.0000785 Eth | $474,520.00 1,825,938.700 CRV | 0.9749% |
20 | ![]() | CRV-USDT | $0.2608 0.0000783 Eth | $426,070.00 1,632,753.200 CRV | 0.8717% |
21 | ![]() | CRV-EUR | $0.2618 0.0000790 Eth | $413,314.00 1,578,595.006 CRV | 0.8428% |
22 | ![]() | CRV-USDT | $0.2609 0.0000788 Eth | $403,094.00 1,545,256.800 CRV | 0.8250% |
23 | ![]() | CRV-USDT | $0.2603 0.0000786 Eth | $377,917.00 1,452,078.553 CRV | 0.7753% |
24 | ![]() | CRV-USDT | $0.2608 0.0000788 Eth | $353,103.00 1,354,136.100 CRV | 0.7230% |
25 | ![]() | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2617 0.0000790 Eth | $314,509.00 318,187.531 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1699% |
26 | ![]() | CRV-USDT | $0.2606 0.0000787 Eth | $307,154.00 1,164,018.980 CRV | 0.6215% |
27 | ![]() | CRV-USDT | $0.2612 0.0000786 Eth | $292,162.00 1,118,722.600 CRV | 0.5973% |
28 | ![]() | CRV-USDC | $0.2601 0.0000786 Eth | $281,214.00 1,080,993.950 CRV | 0.5771% |
29 | ![]() | CRV-USDT | $0.2616 0.0000789 Eth | $277,075.00 1,050,215.300 CRV | 0.5607% |
30 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2612 0.0000789 Eth | $263,399.00 1,007,100.126 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.5377% |
31 | ![]() | CRV-XRP | $0.2611 0.0000788 Eth | $261,826.00 1,002,661.830 CRV | 0.5353% |
32 | ![]() | CRV-USDT | $0.2608 0.0000787 Eth | $256,240.00 982,692.349 CRV | 0.5247% |
33 | ![]() | CRV-USDT | $0.2609 0.0000788 Eth | $248,981.00 954,159.300 CRV | 0.5094% |
34 | ![]() | CRV-USDT | $0.2601 0.0000786 Eth | $235,465.00 891,401.600 CRV | 0.4759% |
35 | ![]() | CRV-USDT | $0.261 0.0000788 Eth | $168,538.00 638,239.874 CRV | 0.3408% |
36 | ![]() | CRV-USDC | $0.2599 0.0000785 Eth | $159,972.00 605,497.890 CRV | 0.3233% |
37 | ![]() | CRV-TRY | $0.2623 0.0000792 Eth | $159,849.00 609,466.000 CRV | 0.3254% |
38 | ![]() | CRV-USDT | $0.2603 0.0000786 Eth | $152,428.00 579,845.649 CRV | 0.3096% |
39 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2588 0.0000782 Eth | $152,125.00 578,039.841 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3086% |
40 | ![]() | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2587 0.0000776 Eth | $139,400.00 197,407.853 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.1054% |
41 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2607 0.0000787 Eth | $135,696.00 507,772.445 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.2711% |
42 | ![]() | CRV-USDT | $0.2606 0.0000787 Eth | $130,003.00 492,560.684 CRV | 0.2630% |
43 | ![]() | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2587 0.0000776 Eth | $128,158.00 131,780.706 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0704% |
44 | ![]() | CRV-USDT | $0.2609 0.0000788 Eth | $123,849.00 474,770.220 CRV | 0.2535% |
45 | ![]() | CRV-USDT | $0.2608 0.0000788 Eth | $118,106.00 447,709.500 CRV | 0.2390% |
46 | ![]() | CRV-KRW | $0.2639 0.0000797 Eth | $111,728.00 423,374.911 CRV | 0.2260% |
47 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2616 0.0000790 Eth | $110,456.00 418,426.522 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.2234% |
48 | ![]() | CRV-BTC | $0.2612 0.0000789 Eth | $108,147.00 413,282.200 CRV | 0.2207% |
49 | ![]() | CRV-TRY | $0.2641 0.0000794 Eth | $104,015.00 393,886.750 CRV | 0.2103% |
50 | ![]() | CRV-USDT | $0.2599 0.0000785 Eth | $98,842.00 374,516.500 CRV | 0.2000% |
51 | ![]() | CRV-USDT | $0.2607 0.0000787 Eth | $87,655.00 332,247.600 CRV | 0.1774% |
52 | ![]() | CRV-THB | $0.2614 0.0000789 Eth | $77,374.00 295,959.259 CRV | 0.1580% |
53 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $0.2605 0.0000786 Eth | $70,220.00 270,273.903 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1443% |
54 | ![]() | CRV-TRY | $0.2635 0.0000796 Eth | $70,000.00 265,483.900 CRV | 0.1417% |
55 | ![]() | CRV-USDT | $0.26 0.0000784 Eth | $64,900.00 249,660.797 CRV | 0.1333% |
56 | ![]() | CRV-BTC | $0.2608 0.0000788 Eth | $64,892.00 248,224.262 CRV | 0.1325% |
57 | ![]() | CRV-USD | $0.26 0.0000785 Eth | $64,323.00 247,397.060 CRV | 0.1321% |
58 | ![]() | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2617 0.0000785 Eth | $61,331.00 62,246.128 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0332% |
59 | ![]() | CRV-USDC | $0.2626 0.0000787 Eth | $60,472.00 229,339.500 CRV | 0.1224% |
60 | ![]() | CRV-EUR | $0.262 0.0000791 Eth | $60,379.00 230,749.411 CRV | 0.1232% |
61 | ![]() | CRV-BTC | $0.2602 0.0000785 Eth | $57,999.00 222,888.800 CRV | 0.1190% |
62 | ![]() | CRV-USDT | $0.26 0.0000785 Eth | $57,530.00 221,305.300 CRV | 0.1182% |
63 | ![]() | CRV-USDT | $0.2609 0.0000788 Eth | $54,694.00 209,600.999 CRV | 0.1119% |
64 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2587 0.0000772 Eth | $51,817.00 197,629.360 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1055% |
65 | ![]() | CRV-TRY | $0.2605 0.0000787 Eth | $49,908.00 191,572.020 CRV | 0.1023% |
66 | ![]() | CRV-USD | $0.2623 0.0000792 Eth | $47,323.00 180,414.748 CRV | 0.0963% |
67 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.262 0.0000788 Eth | $45,382.00 208,466.262 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1113% |
68 | ![]() | CRV-USDT | $0.2604 0.0000787 Eth | $44,012.00 169,040.764 CRV | 0.0903% |
69 | ![]() | CRV-USDT | $0.2596 0.0000784 Eth | $43,310.00 161,919.200 CRV | 0.0864% |
70 | ![]() | CRV-USDT | $0.2614 0.0000790 Eth | $34,855.00 131,653.890 CRV | 0.0703% |
71 | ![]() | CRV-USD | $0.261 0.0000788 Eth | $32,993.00 126,410.791 CRV | 0.0675% |
72 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2613 0.0000789 Eth | $20,388.00 78,099.078 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0417% |
73 | ![]() | CRV-USDT | $0.2599 0.0000785 Eth | $18,711.38 71,985.558 CRV | 0.0384% |
74 | ![]() | CRV-USDC | $0.2594 0.0000784 Eth | $18,496.12 70,157.355 CRV | 0.0375% |
75 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2616 0.0000790 Eth | $16,747.15 62,793.302 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0335% |
76 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.262 0.0000791 Eth | $15,896.17 60,021.519 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0320% |
77 | ![]() | CRV-EUR | $0.2624 0.0000792 Eth | $15,780.15 60,136.030 CRV | 0.0321% |
78 | ![]() | CRV-BTC | $0.2612 0.0000789 Eth | $14,372.34 55,023.000 CRV | 0.0294% |
79 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $0.2606 0.0000786 Eth | $14,285.55 54,812.206 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0293% |
80 | ![]() | CRV-EUR | $0.2614 0.0000790 Eth | $14,094.76 53,912.964 CRV | 0.0288% |
81 | ![]() | CRV-TRY | $0.2617 0.0000790 Eth | $13,864.87 52,379.515 CRV | 0.0280% |
82 | ![]() | CRV-BTC | $0.2612 0.0000789 Eth | $13,675.71 60,180.000 CRV | 0.0321% |
83 | ![]() | CRV-GBP | $0.2619 0.0000791 Eth | $13,542.14 51,709.940 CRV | 0.0276% |
84 | ![]() | CRV-IDR | $0.2617 0.0000790 Eth | $11,632.05 44,450.752 CRV | 0.0237% |
85 | ![]() | CRV-USDT | $0.2622 0.0000792 Eth | $11,260.92 42,661.645 CRV | 0.0228% |
86 | ![]() | CRV-USDT | $0.2604 0.0000786 Eth | $10,119.72 38,865.714 CRV | 0.0208% |
87 | ![]() | 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2617 0.0000790 Eth | $6,910.99 26,537.211 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | 0.0142% |
88 | ![]() | CRV-BTC | $0.2608 0.0000788 Eth | $6,368.92 24,355.213 CRV | 0.0130% |
89 | ![]() | CRV-USDT | $0.261 0.0000787 Eth | $5,581.80 21,390.113 CRV | 0.0114% |
90 | ![]() | CRV-EUR | $0.2592 0.0000777 Eth | $4,123.32 15,909.022 CRV | 0.0085% |
91 | ![]() | CRV-BTC | $0.2588 0.0000782 Eth | $3,513.27 13,534.726 CRV | 0.0072% |
92 | ![]() | CRV-USDT | $0.2616 0.0000789 Eth | $3,395.54 12,874.488 CRV | 0.0069% |
93 | ![]() | CRV-USD | $0.263 0.0000794 Eth | $3,060.85 11,638.216 CRV | 0.0062% |
94 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2613 0.0000789 Eth | $2,555.84 9,683.430 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0052% |
95 | ![]() | CRV-USD | $0.264 0.0000797 Eth | $2,546.52 9,645.914 CRV | 0.0051% |
96 | ![]() | CRV-USDT | $0.262 0.0000791 Eth | $2,262.79 8,635.193 CRV | 0.0046% |
97 | ![]() | CRV-THB | $0.2617 0.0000790 Eth | $1,566.37 5,946.500 CRV | 0.0032% |
98 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2635 0.0000790 Eth | $1,446.40 5,456.350 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0029% |
99 | ![]() | CRV-BTC | $0.2608 0.0000788 Eth | $431.43 1,654.121 CRV | 0.0009% |
100 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2619 0.0000785 Eth | $350.75 1,321.159 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0007% |
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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