Overview
Max Total Supply
2,165,074,171.244439213214291664 CRV
Holders
87,841 ( -0.009%)
Market
Price
$0.27 @ 0.000109 ETH (-1.14%)
Onchain Market Cap
$593,843,259.01
Circulating Supply Market Cap
$326,126,763.53
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2736 0.0001093 Eth | $5,060,460.00 18,129,324.229 CRV | 10.0399% |
2 | ![]() | CRV-USDT | $0.2739 0.0001095 Eth | $4,541,599.00 16,288,353.315 CRV | 9.0203% |
3 | ![]() | CRV-USDT | $0.2739 0.0001094 Eth | $4,236,767.00 15,158,383.387 CRV | 8.3946% |
4 | ![]() | CRV-USDT | $0.2739 0.0001094 Eth | $3,370,263.00 12,093,887.220 CRV | 6.6975% |
5 | ![]() | CRV-USDT | $0.2735 0.0001093 Eth | $3,220,754.00 11,775,391.530 CRV | 6.5211% |
6 | ![]() | CRV-USDT | $0.2744 0.0001096 Eth | $3,190,355.00 0.000 CRV | 0.0000% |
7 | ![]() | CRV-USDT | $0.2742 0.0001095 Eth | $3,163,664.00 11,535,881.600 CRV | 6.3885% |
8 | ![]() | CRV-USDT | $0.2736 0.0001093 Eth | $1,987,102.00 7,263,921.350 CRV | 4.0227% |
9 | ![]() | CRV-USD | $0.2738 0.0001095 Eth | $1,890,990.00 6,906,464.860 CRV | 3.8247% |
10 | ![]() | CRV-USDT | $0.2737 0.0001094 Eth | $1,882,834.00 6,755,393.600 CRV | 3.7411% |
11 | ![]() | CRV-USDT | $0.2742 0.0001095 Eth | $1,753,588.00 6,288,267.200 CRV | 3.4824% |
12 | ![]() | CRV-USDT | $0.2735 0.0001093 Eth | $1,749,981.00 6,398,893.200 CRV | 3.5436% |
13 | ![]() | CRV-USDT | $0.2744 0.0001096 Eth | $1,537,122.00 5,514,034.100 CRV | 3.0536% |
14 | ![]() | CRV-USDT | $0.2742 0.0001095 Eth | $1,421,976.00 5,186,316.600 CRV | 2.8721% |
15 | ![]() | CRV-USDT | $0.274 0.0001094 Eth | $1,216,591.00 4,439,757.600 CRV | 2.4587% |
16 | ![]() | CRV-USDT | $0.2732 0.0001092 Eth | $933,322.00 3,348,556.116 CRV | 1.8544% |
17 | ![]() | CRV-USDT | $0.2741 0.0001095 Eth | $821,545.00 2,996,765.400 CRV | 1.6596% |
18 | ![]() | CRV-USDT | $0.2743 0.0001095 Eth | $807,837.00 2,945,434.100 CRV | 1.6312% |
19 | ![]() | CRV-USDT | $0.2743 0.0001096 Eth | $769,643.00 2,758,810.667 CRV | 1.5278% |
20 | ![]() | CRV-USDT | $0.2731 0.0001091 Eth | $726,055.00 2,658,641.069 CRV | 1.4723% |
21 | ![]() | CRV-USDT | $0.2738 0.0001094 Eth | $713,773.00 2,560,528.500 CRV | 1.4180% |
22 | ![]() | CRV-USDT | $0.2737 0.0001094 Eth | $590,475.00 2,157,565.122 CRV | 1.1948% |
23 | ![]() | CRV-USDT | $0.2735 0.0001093 Eth | $453,757.00 1,658,942.700 CRV | 0.9187% |
24 | ![]() | CRV-USDT | $0.2744 0.0001096 Eth | $394,429.00 1,414,696.739 CRV | 0.7834% |
25 | ![]() | CRV-USDT | $0.2739 0.0001095 Eth | $359,718.00 1,290,183.600 CRV | 0.7145% |
26 | ![]() | CRV-USDT | $0.2738 0.0001094 Eth | $351,309.00 1,282,982.500 CRV | 0.7105% |
27 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2792 0.0001115 Eth | $311,923.00 1,112,015.920 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.6158% |
28 | ![]() | CRV-BTC | $0.2736 0.0001094 Eth | $291,871.00 1,047,628.400 CRV | 0.5802% |
29 | ![]() | CRV-USDT | $0.2738 0.0001094 Eth | $290,011.00 1,040,130.185 CRV | 0.5760% |
30 | ![]() | CRV-USDT | $0.2745 0.0001096 Eth | $286,817.00 1,028,609.900 CRV | 0.5696% |
31 | ![]() | CRV-USDT | $0.2743 0.0001096 Eth | $265,054.00 966,146.520 CRV | 0.5350% |
32 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.274 0.0001095 Eth | $264,085.00 953,215.358 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.5279% |
33 | ![]() | CRV-USDT | $0.2736 0.0001093 Eth | $254,549.00 913,773.209 CRV | 0.5060% |
34 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2736 0.0001094 Eth | $250,760.00 900,225.250 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4985% |
35 | ![]() | CRV-USD | $0.274 0.0001094 Eth | $239,937.00 875,681.111 CRV | 0.4849% |
36 | ![]() | CRV-USDT | $0.2736 0.0001094 Eth | $239,456.00 859,219.400 CRV | 0.4758% |
37 | ![]() | CRV-USDC | $0.2735 0.0001093 Eth | $228,267.00 816,941.400 CRV | 0.4524% |
38 | ![]() | CRV-EUR | $0.2752 0.0001100 Eth | $216,975.00 788,363.768 CRV | 0.4366% |
39 | ![]() | CRV-USDT | $0.2734 0.0001093 Eth | $198,318.00 711,750.500 CRV | 0.3942% |
40 | ![]() | CRV-USD | $0.273 0.0001091 Eth | $189,205.00 693,059.810 CRV | 0.3838% |
41 | ![]() | CRV-USDT | $0.273 0.0001091 Eth | $186,184.00 682,099.900 CRV | 0.3777% |
42 | ![]() | CRV-THB | $0.2743 0.0001096 Eth | $178,542.00 650,966.028 CRV | 0.3605% |
43 | ![]() | CRV-USDT | $0.2744 0.0001097 Eth | $176,052.00 641,688.230 CRV | 0.3554% |
44 | ![]() | CRV-USDT | $0.2743 0.0001096 Eth | $159,236.00 580,564.386 CRV | 0.3215% |
45 | ![]() | CRV-USDT | $0.2734 0.0001093 Eth | $158,960.00 581,325.084 CRV | 0.3219% |
46 | ![]() | CRV-USDC | $0.2741 0.0001096 Eth | $150,603.00 540,237.780 CRV | 0.2992% |
47 | ![]() | CRV-USDT | $0.2743 0.0001096 Eth | $141,134.00 514,598.646 CRV | 0.2850% |
48 | ![]() | CRV-USDT | $0.2741 0.0001095 Eth | $123,726.00 443,655.500 CRV | 0.2457% |
49 | ![]() | CRV-USDT | $0.2739 0.0001094 Eth | $119,249.00 435,388.000 CRV | 0.2411% |
50 | ![]() | CRV-BTC | $0.2737 0.0001094 Eth | $92,902.00 339,491.800 CRV | 0.1880% |
51 | ![]() | CRV-TRY | $0.2741 0.0001096 Eth | $89,557.00 326,690.500 CRV | 0.1809% |
52 | ![]() | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2753 0.0001100 Eth | $86,693.00 170,797.492 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0946% |
53 | ![]() | CRV-TRY | $0.2759 0.0001102 Eth | $76,286.00 272,555.200 CRV | 0.1509% |
54 | ![]() | CRV-TRY | $0.2768 0.0001105 Eth | $64,340.00 232,458.480 CRV | 0.1287% |
55 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2767 0.0001106 Eth | $60,796.00 214,824.262 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.1190% |
56 | ![]() | CRV-TRY | $0.2748 0.0001098 Eth | $54,590.00 198,644.916 CRV | 0.1100% |
57 | ![]() | CRV-USDT | $0.2742 0.0001095 Eth | $53,593.00 192,209.000 CRV | 0.1064% |
58 | ![]() | CRV-BTC | $0.273 0.0001091 Eth | $51,546.00 184,633.327 CRV | 0.1022% |
59 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2736 0.0001093 Eth | $48,623.00 177,309.076 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0982% |
60 | ![]() | CRV-USDT | $0.274 0.0001095 Eth | $46,548.00 169,855.004 CRV | 0.0941% |
61 | ![]() | CRV-USDT | $0.2741 0.0001095 Eth | $46,321.00 165,406.021 CRV | 0.0916% |
62 | ![]() | CRV-USDT | $0.273 0.0001091 Eth | $43,384.00 162,491.139 CRV | 0.0900% |
63 | ![]() | CRV-BTC | $0.2731 0.0001091 Eth | $41,240.00 151,014.000 CRV | 0.0836% |
64 | ![]() | CRV-BTC | $0.2742 0.0001096 Eth | $29,418.00 105,755.200 CRV | 0.0586% |
65 | ![]() | CRV-USDT | $0.2743 0.0001096 Eth | $27,794.00 101,336.356 CRV | 0.0561% |
66 | ![]() | CRV-BTC | $0.2749 0.0001098 Eth | $25,436.00 92,524.062 CRV | 0.0512% |
67 | ![]() | CRV-BTC | $0.2765 0.0001105 Eth | $18,542.51 67,055.740 CRV | 0.0371% |
68 | ![]() | CRV-EUR | $0.2731 0.0001092 Eth | $18,508.91 67,764.740 CRV | 0.0375% |
69 | ![]() | CRV-USDC | $0.2736 0.0001093 Eth | $14,893.75 53,558.463 CRV | 0.0297% |
70 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $0.2735 0.0001093 Eth | $14,485.56 53,062.692 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0294% |
71 | ![]() | CRV-USD | $0.2747 0.0001098 Eth | $13,604.20 49,523.849 CRV | 0.0274% |
72 | ![]() | CRV-TRY | $0.2756 0.0001101 Eth | $13,504.98 48,177.322 CRV | 0.0267% |
73 | ![]() | CRV-USDT | $0.2746 0.0001097 Eth | $13,474.17 48,322.953 CRV | 0.0268% |
74 | ![]() | CRV-THB | $0.2757 0.0001101 Eth | $11,178.27 39,871.900 CRV | 0.0221% |
75 | ![]() | CRV-EUR | $0.2742 0.0001096 Eth | $8,256.21 29,818.661 CRV | 0.0165% |
76 | ![]() | CRV-USDT | $0.2746 0.0001097 Eth | $8,250.15 29,504.400 CRV | 0.0163% |
77 | ![]() | CRV-EUR | $0.2749 0.0001098 Eth | $7,638.81 27,787.473 CRV | 0.0154% |
78 | ![]() | CRV-BTC | $0.2749 0.0001098 Eth | $7,129.92 25,933.740 CRV | 0.0144% |
79 | ![]() | CRV-ETH | $0.2742 0.0001096 Eth | $7,100.88 25,900.008 CRV | 0.0143% |
80 | ![]() | CRV-GBP | $0.277 0.0001107 Eth | $5,878.05 21,222.640 CRV | 0.0118% |
81 | ![]() | CRV-USDT | $0.274 0.0001094 Eth | $5,831.98 21,282.906 CRV | 0.0118% |
82 | ![]() | CRV-EUR | $0.2747 0.0001098 Eth | $4,763.83 17,341.799 CRV | 0.0096% |
83 | ![]() | CRV-USD | $0.2738 0.0001094 Eth | $4,364.29 15,940.286 CRV | 0.0088% |
84 | ![]() | CRV-BTC | $0.2742 0.0001096 Eth | $4,187.62 15,273.500 CRV | 0.0085% |
85 | ![]() | CRV-USDT | $0.2733 0.0001092 Eth | $4,065.84 14,592.702 CRV | 0.0081% |
86 | ![]() | CRV-XBT | $0.2767 0.0001105 Eth | $3,726.93 13,469.461 CRV | 0.0075% |
87 | ![]() | CRV-IDR | $0.2758 0.0001102 Eth | $3,550.10 12,870.893 CRV | 0.0071% |
88 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.2739 0.0001095 Eth | $2,419.04 8,694.229 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0048% |
89 | ![]() | CRV-USDT | $0.2737 0.0001094 Eth | $2,255.01 8,238.519 CRV | 0.0046% |
90 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2741 0.0001095 Eth | $1,716.60 6,163.594 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0034% |
91 | ![]() | CRV-ETH | $0.2746 0.0001097 Eth | $1,621.60 5,842.700 CRV | 0.0032% |
92 | ![]() | CRV-USD | $0.2732 0.0001092 Eth | $375.97 1,376.028 CRV | 0.0008% |
93 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2774 0.0001109 Eth | $222.05 784.061 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0004% |
94 | ![]() | CRV-USDT | $0.2733 0.0001093 Eth | $147.22 538.653 CRV | 0.0003% |
95 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2753 0.0001100 Eth | $101.47 365.768 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0002% |
96 | ![]() | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2747 0.0001098 Eth | $92.98 94.197 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0001% |
97 | ![]() | CRV-USDT | $0.275 0.0001099 Eth | $54.86 198.349 CRV | 0.0001% |
98 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.2753 0.0001101 Eth | $36.29 132.012 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
99 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2737 0.0001094 Eth | $35.65 128.678 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0001% |
100 | ![]() | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $0.2767 0.0001106 Eth | $22.90 82.314 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 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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