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Overview
Max Total Supply
2,148,067,945.781633635449833845 CRV
Holders
86,742 (0.00%)
Market
Price
$0.27 @ 0.000078 ETH (-1.86%)
Onchain Market Cap
$580,654,478.12
Circulating Supply Market Cap
$321,866,237.06
Other Info
Token Contract (WITH 18 Decimals)
Balance
26.483004697211910341 CRVValue
$7.16 ( ~0.00207875697320233 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2706 0.0000786 Eth | $14,499,493.00 53,098,164.900 CRV | 17.5388% |
2 | ![]() | CRV-USDT | $0.2702 0.0000784 Eth | $9,702,087.00 35,641,377.397 CRV | 11.7727% |
3 | ![]() | CRV-USDT | $0.2701 0.0000784 Eth | $8,872,575.00 32,372,984.432 CRV | 10.6931% |
4 | ![]() | CRV-USDT | $0.2706 0.0000786 Eth | $5,370,196.00 19,597,247.100 CRV | 6.4731% |
5 | ![]() | CRV-USDT | $0.2705 0.0000785 Eth | $3,487,265.00 12,769,199.016 CRV | 4.2178% |
6 | ![]() | CRV-USDT | $0.2704 0.0000785 Eth | $3,349,560.00 12,387,539.390 CRV | 4.0917% |
7 | ![]() | CRV-USDT | $0.2708 0.0000786 Eth | $3,045,729.00 11,247,255.912 CRV | 3.7151% |
8 | ![]() | CRV-USDT | $0.2705 0.0000785 Eth | $2,335,800.00 8,556,273.900 CRV | 2.8262% |
9 | ![]() | CRV-USDT | $0.2703 0.0000785 Eth | $2,293,634.00 8,366,133.890 CRV | 2.7634% |
10 | ![]() | CRV-USDT | $0.2704 0.0000785 Eth | $2,268,783.00 8,326,060.470 CRV | 2.7502% |
11 | ![]() | CRV-USD | $0.2706 0.0000786 Eth | $2,265,914.00 8,373,664.410 CRV | 2.7659% |
12 | ![]() | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2701 0.0000784 Eth | $2,140,279.00 560.526 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0002% |
13 | ![]() | CRV-USDT | $0.2704 0.0000785 Eth | $1,672,296.00 6,103,469.400 CRV | 2.0160% |
14 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $0.2701 0.0000784 Eth | $1,563,053.00 5,607,971.758 0XD533A949740BB3306D119CC777FA900BA034CD52 | 1.8524% |
15 | ![]() | CRV-USDT | $0.2701 0.0000784 Eth | $1,382,918.00 5,120,533.534 CRV | 1.6914% |
16 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2709 0.0000786 Eth | $1,337,301.00 5,078,274.544 0XD533A949740BB3306D119CC777FA900BA034CD52 | 1.6774% |
17 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2709 0.0000786 Eth | $1,247,615.00 4,638,734.577 0XD533A949740BB3306D119CC777FA900BA034CD52 | 1.5322% |
18 | ![]() | CRV-USDT | $0.2705 0.0000785 Eth | $1,162,646.00 4,257,106.700 CRV | 1.4062% |
19 | ![]() | CRV-USDT | $0.2705 0.0000786 Eth | $1,111,676.00 4,108,969.460 CRV | 1.3572% |
20 | ![]() | CRV-USDT | $0.2703 0.0000785 Eth | $1,063,934.00 3,936,064.300 CRV | 1.3001% |
21 | ![]() | CRV-USDT | $0.2705 0.0000785 Eth | $967,941.00 3,578,387.274 CRV | 1.1820% |
22 | ![]() | CRV-USDT | $0.2703 0.0000785 Eth | $958,739.00 3,512,262.300 CRV | 1.1601% |
23 | ![]() | CRV-TRY | $0.2724 0.0000791 Eth | $947,069.00 3,476,792.000 CRV | 1.1484% |
24 | ![]() | CRV-USDT | $0.2704 0.0000785 Eth | $801,418.00 2,961,700.600 CRV | 0.9783% |
25 | ![]() | CRV-USDT | $0.2698 0.0000783 Eth | $739,753.00 2,742,154.900 CRV | 0.9058% |
26 | ![]() | CRV-USDT | $0.2704 0.0000785 Eth | $682,321.00 2,500,095.532 CRV | 0.8258% |
27 | ![]() | CRV-USDT | $0.2712 0.0000787 Eth | $680,512.00 2,509,482.100 CRV | 0.8289% |
28 | ![]() | CRV-USDT | $0.2704 0.0000785 Eth | $576,756.00 2,112,584.980 CRV | 0.6978% |
29 | ![]() | CRV-USDT | $0.2706 0.0000786 Eth | $523,483.00 1,934,718.700 CRV | 0.6391% |
30 | ![]() | CRV-XRP | $0.2704 0.0000785 Eth | $484,876.00 1,793,261.420 CRV | 0.5923% |
31 | ![]() | CRV-USDT | $0.27 0.0000784 Eth | $474,648.00 1,732,777.800 CRV | 0.5724% |
32 | ![]() | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2701 0.0000784 Eth | $429,106.00 437,553.452 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1445% |
33 | ![]() | CRV-USDC | $0.2704 0.0000785 Eth | $410,378.00 1,517,736.630 CRV | 0.5013% |
34 | ![]() | CRV-USDT | $0.2703 0.0000785 Eth | $392,645.00 1,452,773.200 CRV | 0.4799% |
35 | ![]() | CRV-USDT | $0.2685 0.0000779 Eth | $354,752.00 1,321,368.450 CRV | 0.4365% |
36 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2712 0.0000787 Eth | $303,955.00 1,119,450.543 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3698% |
37 | ![]() | CRV-USDT | $0.2696 0.0000783 Eth | $282,569.00 1,035,298.500 CRV | 0.3420% |
38 | ![]() | CRV-USDT | $0.2706 0.0000785 Eth | $276,959.00 1,013,938.572 CRV | 0.3349% |
39 | ![]() | CRV-USDT | $0.2704 0.0000785 Eth | $243,779.00 892,794.458 CRV | 0.2949% |
40 | ![]() | CRV-TRY | $0.2714 0.0000788 Eth | $239,786.00 883,672.690 CRV | 0.2919% |
41 | ![]() | CRV-BTC | $0.2713 0.0000787 Eth | $239,451.00 874,438.000 CRV | 0.2888% |
42 | ![]() | CRV-USDT | $0.2704 0.0000785 Eth | $227,927.00 834,327.039 CRV | 0.2756% |
43 | ![]() | CRV-USD | $0.272 0.0000790 Eth | $217,713.00 800,416.118 CRV | 0.2644% |
44 | ![]() | CRV-USDT | $0.2706 0.0000786 Eth | $174,059.00 643,299.360 CRV | 0.2125% |
45 | ![]() | CRV-USDT | $0.2702 0.0000784 Eth | $168,455.00 623,492.500 CRV | 0.2059% |
46 | ![]() | CRV-USDC | $0.2696 0.0000783 Eth | $152,359.00 558,421.000 CRV | 0.1845% |
47 | ![]() | CRV-THB | $0.2712 0.0000787 Eth | $149,444.00 551,029.113 CRV | 0.1820% |
48 | ![]() | CRV-USDC | $0.2723 0.0000790 Eth | $149,324.00 545,480.170 CRV | 0.1802% |
49 | ![]() | CRV-USDT | $0.2704 0.0000785 Eth | $142,549.00 527,232.598 CRV | 0.1741% |
50 | ![]() | CRV-USDT | $0.2705 0.0000785 Eth | $140,891.00 516,179.400 CRV | 0.1705% |
51 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2711 0.0000787 Eth | $130,969.00 480,908.503 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.1588% |
52 | ![]() | CRV-USDT | $0.2701 0.0000784 Eth | $130,147.00 476,661.099 CRV | 0.1574% |
53 | ![]() | CRV-USDT | $0.2705 0.0000785 Eth | $127,451.00 466,085.000 CRV | 0.1540% |
54 | ![]() | CRV-TRY | $0.2712 0.0000787 Eth | $125,553.00 450,251.900 CRV | 0.1487% |
55 | ![]() | CRV-EUR | $0.2712 0.0000787 Eth | $123,770.00 456,431.176 CRV | 0.1508% |
56 | ![]() | CRV-USD | $0.27 0.0000784 Eth | $114,754.00 425,016.540 CRV | 0.1404% |
57 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2696 0.0000783 Eth | $112,123.00 413,483.327 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.1366% |
58 | ![]() | CRV-USDT | $0.27 0.0000784 Eth | $109,818.00 406,774.000 CRV | 0.1344% |
59 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2674 0.0000777 Eth | $99,583.00 364,369.320 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1204% |
60 | ![]() | CRV-USDT | $0.27 0.0000784 Eth | $85,156.00 311,970.200 CRV | 0.1030% |
61 | ![]() | 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2701 0.0000784 Eth | $80,278.00 310,194.795 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | 0.1025% |
62 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2709 0.0000786 Eth | $77,379.00 284,771.384 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0941% |
63 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2695 0.0000782 Eth | $72,668.00 267,690.398 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0884% |
64 | ![]() | CRV-USDC | $0.2709 0.0000786 Eth | $68,466.00 255,096.375 CRV | 0.0843% |
65 | ![]() | CRV-USDT | $0.2701 0.0000784 Eth | $64,352.00 231,796.692 CRV | 0.0766% |
66 | ![]() | CRV-USDT | $0.27 0.0000784 Eth | $63,507.00 235,214.515 CRV | 0.0777% |
67 | ![]() | CRV-BTC | $0.2699 0.0000784 Eth | $55,507.00 203,406.392 CRV | 0.0672% |
68 | ![]() | CRV-TRY | $0.2716 0.0000788 Eth | $54,632.00 201,123.638 CRV | 0.0664% |
69 | ![]() | CRV-EUR | $0.2694 0.0000782 Eth | $53,125.00 197,217.340 CRV | 0.0651% |
70 | ![]() | CRV-USDT | $0.271 0.0000787 Eth | $50,362.00 185,838.876 CRV | 0.0614% |
71 | ![]() | CRV-USDT | $0.27 0.0000784 Eth | $43,767.00 161,889.800 CRV | 0.0535% |
72 | ![]() | CRV-USD | $0.2706 0.0000786 Eth | $32,705.00 120,861.885 CRV | 0.0399% |
73 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2712 0.0000787 Eth | $29,909.00 110,157.420 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0364% |
74 | ![]() | CRV-USDT | $0.2706 0.0000785 Eth | $29,852.00 110,320.118 CRV | 0.0364% |
75 | ![]() | CRV-EUR | $0.2697 0.0000783 Eth | $28,998.00 107,522.823 CRV | 0.0355% |
76 | ![]() | CRV-BTC | $0.2713 0.0000787 Eth | $26,401.00 105,984.200 CRV | 0.0350% |
77 | ![]() | CRV-EUR | $0.2689 0.0000781 Eth | $25,617.00 95,342.011 CRV | 0.0315% |
78 | ![]() | CRV-GBP | $0.2705 0.0000785 Eth | $21,613.00 79,900.460 CRV | 0.0264% |
79 | ![]() | CRV-BTC | $0.2706 0.0000786 Eth | $19,274.42 71,079.422 CRV | 0.0235% |
80 | ![]() | CRV-USD | $0.2701 0.0000784 Eth | $18,949.63 70,157.819 CRV | 0.0232% |
81 | ![]() | CRV-BTC | $0.2706 0.0000786 Eth | $18,416.63 68,057.340 CRV | 0.0225% |
82 | ![]() | CRV-TRY | $0.2712 0.0000787 Eth | $17,325.36 62,831.015 CRV | 0.0208% |
83 | ![]() | CRV-THB | $0.2692 0.0000782 Eth | $14,111.60 52,075.100 CRV | 0.0172% |
84 | ![]() | CRV-USDT | $0.271 0.0000787 Eth | $13,585.08 49,727.455 CRV | 0.0164% |
85 | ![]() | CRV-USDT | $0.2705 0.0000785 Eth | $13,072.82 48,320.482 CRV | 0.0160% |
86 | ![]() | CRV-USDT | $0.2706 0.0000785 Eth | $9,749.40 36,032.894 CRV | 0.0119% |
87 | ![]() | CRV-USDT | $0.2703 0.0000785 Eth | $8,973.81 33,199.890 CRV | 0.0110% |
88 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.271 0.0000786 Eth | $7,428.82 27,065.863 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0089% |
89 | ![]() | CRV-BTC | $0.2699 0.0000784 Eth | $6,202.50 22,979.000 CRV | 0.0076% |
90 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2701 0.0000784 Eth | $5,793.12 21,383.513 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0071% |
91 | ![]() | CRV-BTC | $0.2706 0.0000786 Eth | $5,724.86 21,146.868 CRV | 0.0070% |
92 | ![]() | CRV-ETH | $0.2701 0.0000784 Eth | $5,334.67 19,879.952 CRV | 0.0066% |
93 | ![]() | CRV-USDT | $0.2706 0.0000786 Eth | $3,603.74 13,194.152 CRV | 0.0044% |
94 | ![]() | CRV-TRY | $0.2712 0.0000788 Eth | $2,541.22 9,348.296 CRV | 0.0031% |
95 | ![]() | CRV-USDT | $0.2707 0.0000786 Eth | $1,649.66 6,093.246 CRV | 0.0020% |
96 | ![]() | CRV-BTC | $0.2693 0.0000782 Eth | $811.81 2,991.083 CRV | 0.0010% |
97 | ![]() | CRV-BTC | $0.2719 0.0000789 Eth | $555.13 2,041.464 CRV | 0.0007% |
98 | ![]() | CRV-USDT | $0.271 0.0000787 Eth | $417.38 1,522.509 CRV | 0.0005% |
99 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $0.2675 0.0000776 Eth | $132.60 494.935 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0002% |
100 | ![]() | CRV-USD | $0.271 0.0000787 Eth | $32.19 119.202 CRV | 0.0000% |
Contract Source Code Verified (Exact Match)
Contract Name:
Vyper_contract
Compiler Version
vyper:0.2.4
Contract Source Code (Vyper language format)
# @version 0.2.4 """ @title Curve DAO Token @author Curve Finance @license MIT @notice ERC20 with piecewise-linear mining supply. @dev Based on the ERC-20 token standard as defined at https://eips.ethereum.org/EIPS/eip-20 """ from vyper.interfaces import ERC20 implements: ERC20 event Transfer: _from: indexed(address) _to: indexed(address) _value: uint256 event Approval: _owner: indexed(address) _spender: indexed(address) _value: uint256 event UpdateMiningParameters: time: uint256 rate: uint256 supply: uint256 event SetMinter: minter: address event SetAdmin: admin: address name: public(String[64]) symbol: public(String[32]) decimals: public(uint256) balanceOf: public(HashMap[address, uint256]) allowances: HashMap[address, HashMap[address, uint256]] total_supply: uint256 minter: public(address) admin: public(address) # General constants YEAR: constant(uint256) = 86400 * 365 # Allocation: # ========= # * shareholders - 30% # * emplyees - 3% # * DAO-controlled reserve - 5% # * Early users - 5% # == 43% == # left for inflation: 57% # Supply parameters INITIAL_SUPPLY: constant(uint256) = 1_303_030_303 INITIAL_RATE: constant(uint256) = 274_815_283 * 10 ** 18 / YEAR # leading to 43% premine RATE_REDUCTION_TIME: constant(uint256) = YEAR RATE_REDUCTION_COEFFICIENT: constant(uint256) = 1189207115002721024 # 2 ** (1/4) * 1e18 RATE_DENOMINATOR: constant(uint256) = 10 ** 18 INFLATION_DELAY: constant(uint256) = 86400 # Supply variables mining_epoch: public(int128) start_epoch_time: public(uint256) rate: public(uint256) start_epoch_supply: uint256 @external def __init__(_name: String[64], _symbol: String[32], _decimals: uint256): """ @notice Contract constructor @param _name Token full name @param _symbol Token symbol @param _decimals Number of decimals for token """ init_supply: uint256 = INITIAL_SUPPLY * 10 ** _decimals self.name = _name self.symbol = _symbol self.decimals = _decimals self.balanceOf[msg.sender] = init_supply self.total_supply = init_supply self.admin = msg.sender log Transfer(ZERO_ADDRESS, msg.sender, init_supply) self.start_epoch_time = block.timestamp + INFLATION_DELAY - RATE_REDUCTION_TIME self.mining_epoch = -1 self.rate = 0 self.start_epoch_supply = init_supply @internal def _update_mining_parameters(): """ @dev Update mining rate and supply at the start of the epoch Any modifying mining call must also call this """ _rate: uint256 = self.rate _start_epoch_supply: uint256 = self.start_epoch_supply self.start_epoch_time += RATE_REDUCTION_TIME self.mining_epoch += 1 if _rate == 0: _rate = INITIAL_RATE else: _start_epoch_supply += _rate * RATE_REDUCTION_TIME self.start_epoch_supply = _start_epoch_supply _rate = _rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT self.rate = _rate log UpdateMiningParameters(block.timestamp, _rate, _start_epoch_supply) @external def update_mining_parameters(): """ @notice Update mining rate and supply at the start of the epoch @dev Callable by any address, but only once per epoch Total supply becomes slightly larger if this function is called late """ assert block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME # dev: too soon! self._update_mining_parameters() @external def start_epoch_time_write() -> uint256: """ @notice Get timestamp of the current mining epoch start while simultaneously updating mining parameters @return Timestamp of the epoch """ _start_epoch_time: uint256 = self.start_epoch_time if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() return self.start_epoch_time else: return _start_epoch_time @external def future_epoch_time_write() -> uint256: """ @notice Get timestamp of the next mining epoch start while simultaneously updating mining parameters @return Timestamp of the next epoch """ _start_epoch_time: uint256 = self.start_epoch_time if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() return self.start_epoch_time + RATE_REDUCTION_TIME else: return _start_epoch_time + RATE_REDUCTION_TIME @internal @view def _available_supply() -> uint256: return self.start_epoch_supply + (block.timestamp - self.start_epoch_time) * self.rate @external @view def available_supply() -> uint256: """ @notice Current number of tokens in existence (claimed or unclaimed) """ return self._available_supply() @external @view def mintable_in_timeframe(start: uint256, end: uint256) -> uint256: """ @notice How much supply is mintable from start timestamp till end timestamp @param start Start of the time interval (timestamp) @param end End of the time interval (timestamp) @return Tokens mintable from `start` till `end` """ assert start <= end # dev: start > end to_mint: uint256 = 0 current_epoch_time: uint256 = self.start_epoch_time current_rate: uint256 = self.rate # Special case if end is in future (not yet minted) epoch if end > current_epoch_time + RATE_REDUCTION_TIME: current_epoch_time += RATE_REDUCTION_TIME current_rate = current_rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT assert end <= current_epoch_time + RATE_REDUCTION_TIME # dev: too far in future for i in range(999): # Curve will not work in 1000 years. Darn! if end >= current_epoch_time: current_end: uint256 = end if current_end > current_epoch_time + RATE_REDUCTION_TIME: current_end = current_epoch_time + RATE_REDUCTION_TIME current_start: uint256 = start if current_start >= current_epoch_time + RATE_REDUCTION_TIME: break # We should never get here but what if... elif current_start < current_epoch_time: current_start = current_epoch_time to_mint += current_rate * (current_end - current_start) if start >= current_epoch_time: break current_epoch_time -= RATE_REDUCTION_TIME current_rate = current_rate * RATE_REDUCTION_COEFFICIENT / RATE_DENOMINATOR # double-division with rounding made rate a bit less => good assert current_rate <= INITIAL_RATE # This should never happen return to_mint @external def set_minter(_minter: address): """ @notice Set the minter address @dev Only callable once, when minter has not yet been set @param _minter Address of the minter """ assert msg.sender == self.admin # dev: admin only assert self.minter == ZERO_ADDRESS # dev: can set the minter only once, at creation self.minter = _minter log SetMinter(_minter) @external def set_admin(_admin: address): """ @notice Set the new admin. @dev After all is set up, admin only can change the token name @param _admin New admin address """ assert msg.sender == self.admin # dev: admin only self.admin = _admin log SetAdmin(_admin) @external @view def totalSupply() -> uint256: """ @notice Total number of tokens in existence. """ return self.total_supply @external @view def allowance(_owner : address, _spender : address) -> uint256: """ @notice Check the amount of tokens that an owner allowed to a spender @param _owner The address which owns the funds @param _spender The address which will spend the funds @return uint256 specifying the amount of tokens still available for the spender """ return self.allowances[_owner][_spender] @external def transfer(_to : address, _value : uint256) -> bool: """ @notice Transfer `_value` tokens from `msg.sender` to `_to` @dev Vyper does not allow underflows, so the subtraction in this function will revert on an insufficient balance @param _to The address to transfer to @param _value The amount to be transferred @return bool success """ assert _to != ZERO_ADDRESS # dev: transfers to 0x0 are not allowed self.balanceOf[msg.sender] -= _value self.balanceOf[_to] += _value log Transfer(msg.sender, _to, _value) return True @external def transferFrom(_from : address, _to : address, _value : uint256) -> bool: """ @notice Transfer `_value` tokens from `_from` to `_to` @param _from address The address which you want to send tokens from @param _to address The address which you want to transfer to @param _value uint256 the amount of tokens to be transferred @return bool success """ assert _to != ZERO_ADDRESS # dev: transfers to 0x0 are not allowed # NOTE: vyper does not allow underflows # so the following subtraction would revert on insufficient balance self.balanceOf[_from] -= _value self.balanceOf[_to] += _value self.allowances[_from][msg.sender] -= _value log Transfer(_from, _to, _value) return True @external def approve(_spender : address, _value : uint256) -> bool: """ @notice Approve `_spender` to transfer `_value` tokens on behalf of `msg.sender` @dev Approval may only be from zero -> nonzero or from nonzero -> zero in order to mitigate the potential race condition described here: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 @param _spender The address which will spend the funds @param _value The amount of tokens to be spent @return bool success """ assert _value == 0 or self.allowances[msg.sender][_spender] == 0 self.allowances[msg.sender][_spender] = _value log Approval(msg.sender, _spender, _value) return True @external def mint(_to: address, _value: uint256) -> bool: """ @notice Mint `_value` tokens and assign them to `_to` @dev Emits a Transfer event originating from 0x00 @param _to The account that will receive the created tokens @param _value The amount that will be created @return bool success """ assert msg.sender == self.minter # dev: minter only assert _to != ZERO_ADDRESS # dev: zero address if block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() _total_supply: uint256 = self.total_supply + _value assert _total_supply <= self._available_supply() # dev: exceeds allowable mint amount self.total_supply = _total_supply self.balanceOf[_to] += _value log Transfer(ZERO_ADDRESS, _to, _value) return True @external def burn(_value: uint256) -> bool: """ @notice Burn `_value` tokens belonging to `msg.sender` @dev Emits a Transfer event with a destination of 0x00 @param _value The amount that will be burned @return bool success """ self.balanceOf[msg.sender] -= _value self.total_supply -= _value log Transfer(msg.sender, ZERO_ADDRESS, _value) return True @external def set_name(_name: String[64], _symbol: String[32]): """ @notice Change the token name and symbol to `_name` and `_symbol` @dev Only callable by the admin account @param _name New token name @param _symbol New token symbol """ assert msg.sender == self.admin, "Only admin is allowed to change name" self.name = _name self.symbol = _symbol
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"name":"Transfer","inputs":[{"type":"address","name":"_from","indexed":true},{"type":"address","name":"_to","indexed":true},{"type":"uint256","name":"_value","indexed":false}],"anonymous":false,"type":"event"},{"name":"Approval","inputs":[{"type":"address","name":"_owner","indexed":true},{"type":"address","name":"_spender","indexed":true},{"type":"uint256","name":"_value","indexed":false}],"anonymous":false,"type":"event"},{"name":"UpdateMiningParameters","inputs":[{"type":"uint256","name":"time","indexed":false},{"type":"uint256","name":"rate","indexed":false},{"type":"uint256","name":"supply","indexed":false}],"anonymous":false,"type":"event"},{"name":"SetMinter","inputs":[{"type":"address","name":"minter","indexed":false}],"anonymous":false,"type":"event"},{"name":"SetAdmin","inputs":[{"type":"address","name":"admin","indexed":false}],"anonymous":false,"type":"event"},{"outputs":[],"inputs":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"},{"type":"uint256","name":"_decimals"}],"stateMutability":"nonpayable","type":"constructor"},{"name":"update_mining_parameters","outputs":[],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":148748},{"name":"start_epoch_time_write","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":149603},{"name":"future_epoch_time_write","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":149806},{"name":"available_supply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":4018},{"name":"mintable_in_timeframe","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"uint256","name":"start"},{"type":"uint256","name":"end"}],"stateMutability":"view","type":"function","gas":2216141},{"name":"set_minter","outputs":[],"inputs":[{"type":"address","name":"_minter"}],"stateMutability":"nonpayable","type":"function","gas":38698},{"name":"set_admin","outputs":[],"inputs":[{"type":"address","name":"_admin"}],"stateMutability":"nonpayable","type":"function","gas":37837},{"name":"totalSupply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1421},{"name":"allowance","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"_owner"},{"type":"address","name":"_spender"}],"stateMutability":"view","type":"function","gas":1759},{"name":"transfer","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":75139},{"name":"transferFrom","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":111433},{"name":"approve","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":39288},{"name":"mint","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":228030},{"name":"burn","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":74999},{"name":"set_name","outputs":[],"inputs":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"}],"stateMutability":"nonpayable","type":"function","gas":178270},{"name":"name","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":8063},{"name":"symbol","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":7116},{"name":"decimals","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1721},{"name":"balanceOf","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":1905},{"name":"minter","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1781},{"name":"admin","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1811},{"name":"mining_epoch","outputs":[{"type":"int128","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1841},{"name":"start_epoch_time","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1871},{"name":"rate","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1901}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000000f43757276652044414f20546f6b656e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034352560000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _name (string): Curve DAO Token
Arg [1] : _symbol (string): CRV
Arg [2] : _decimals (uint256): 18
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [4] : 43757276652044414f20546f6b656e0000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 4352560000000000000000000000000000000000000000000000000000000000
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