Overview
Max Total Supply
2,155,691,558.12931568535166746 CRV
Holders
87,313 (0.00%)
Market
Price
$0.26 @ 0.000098 ETH (+2.05%)
Onchain Market Cap
$555,191,230.43
Circulating Supply Market Cap
$299,624,248.01
Other Info
Token Contract (WITH 18 Decimals)
Balance
7.02 CRVValue
$1.81 ( ~0.000689457997441374 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2576 0.0000980 Eth | $11,186,539.00 43,810,796.700 CRV | 20.2700% |
2 | ![]() | CRV-USDT | $0.2571 0.0000979 Eth | $6,214,306.00 24,307,026.525 CRV | 11.2462% |
3 | ![]() | CRV-USDT | $0.2577 0.0000981 Eth | $5,704,402.00 22,346,266.100 CRV | 10.3390% |
4 | ![]() | CRV-USDT | $0.257 0.0000978 Eth | $4,200,676.00 16,431,875.727 CRV | 7.6025% |
5 | ![]() | CRV-USDT | $0.2574 0.0000980 Eth | $3,317,551.00 12,977,172.170 CRV | 6.0042% |
6 | ![]() | CRV-USDT | $0.2579 0.0000982 Eth | $2,984,955.00 11,572,014.027 CRV | 5.3540% |
7 | ![]() | CRV-USDT | $0.2572 0.0000979 Eth | $2,475,778.00 9,698,170.900 CRV | 4.4871% |
8 | ![]() | CRV-USDT | $0.2572 0.0000979 Eth | $1,661,141.00 6,505,671.230 CRV | 3.0100% |
9 | ![]() | CRV-USDT | $0.2572 0.0000979 Eth | $1,648,927.00 0.000 CRV | 0.0000% |
10 | ![]() | CRV-USDT | $0.2577 0.0000981 Eth | $1,361,797.00 5,325,154.800 CRV | 2.4638% |
11 | ![]() | CRV-USD | $0.257 0.0000978 Eth | $1,227,266.00 4,775,356.000 CRV | 2.2094% |
12 | ![]() | CRV-USDT | $0.2576 0.0000981 Eth | $1,202,666.00 4,668,045.150 CRV | 2.1598% |
13 | ![]() | CRV-USDT | $0.2572 0.0000979 Eth | $897,616.00 3,490,551.920 CRV | 1.6150% |
14 | ![]() | CRV-USDT | $0.2573 0.0000979 Eth | $894,363.00 3,502,284.500 CRV | 1.6204% |
15 | ![]() | CRV-USDT | $0.257 0.0000978 Eth | $842,499.00 3,277,889.000 CRV | 1.5166% |
16 | ![]() | CRV-USDT | $0.2571 0.0000979 Eth | $785,121.00 3,054,221.000 CRV | 1.4131% |
17 | ![]() | CRV-USDT | $0.2579 0.0000982 Eth | $766,810.00 3,003,616.800 CRV | 1.3897% |
18 | ![]() | CRV-USDT | $0.2578 0.0000981 Eth | $674,848.00 2,618,005.800 CRV | 1.2113% |
19 | ![]() | CRV-USDT | $0.2577 0.0000981 Eth | $662,390.00 2,597,175.272 CRV | 1.2016% |
20 | ![]() | CRV-USDT | $0.2577 0.0000981 Eth | $630,191.00 2,444,035.800 CRV | 1.1308% |
21 | ![]() | CRV-USDT | $0.2579 0.0000982 Eth | $575,335.00 2,230,522.663 CRV | 1.0320% |
22 | ![]() | CRV-USDT | $0.2574 0.0000980 Eth | $540,081.00 2,098,508.600 CRV | 0.9709% |
23 | ![]() | CRV-USDT | $0.2576 0.0000980 Eth | $441,610.00 1,729,767.456 CRV | 0.8003% |
24 | ![]() | CRV-USDT | $0.2573 0.0000979 Eth | $399,866.00 1,554,352.500 CRV | 0.7192% |
25 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2547 0.0000970 Eth | $366,661.00 1,437,785.618 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.6652% |
26 | ![]() | CRV-USDT | $0.257 0.0000978 Eth | $339,149.00 1,319,847.400 CRV | 0.6107% |
27 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2571 0.0000979 Eth | $338,547.00 1,319,361.880 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.6104% |
28 | ![]() | CRV-USDT | $0.2576 0.0000980 Eth | $332,590.00 1,290,880.270 CRV | 0.5973% |
29 | ![]() | CRV-USDT | $0.2571 0.0000979 Eth | $301,526.00 1,184,158.900 CRV | 0.5479% |
30 | ![]() | CRV-USDT | $0.2585 0.0000984 Eth | $275,193.00 1,077,343.300 CRV | 0.4985% |
31 | ![]() | CRV-USDT | $0.2573 0.0000979 Eth | $188,243.00 736,962.263 CRV | 0.3410% |
32 | ![]() | CRV-USDT | $0.2572 0.0000979 Eth | $184,576.00 722,728.436 CRV | 0.3344% |
33 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2584 0.0000984 Eth | $183,262.00 715,254.250 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.3309% |
34 | ![]() | CRV-USD | $0.258 0.0000982 Eth | $180,052.00 697,875.644 CRV | 0.3229% |
35 | ![]() | CRV-TRY | $0.2601 0.0000990 Eth | $178,249.00 685,367.500 CRV | 0.3171% |
36 | ![]() | CRV-SGD | $0.2575 0.0000980 Eth | $163,719.00 635,804.640 CRV | 0.2942% |
37 | ![]() | CRV-USD | $0.2571 0.0000978 Eth | $163,490.00 635,901.219 CRV | 0.2942% |
38 | ![]() | CRV-USDT | $0.2579 0.0000982 Eth | $157,201.00 609,451.060 CRV | 0.2820% |
39 | ![]() | CRV-USDC | $0.2571 0.0000979 Eth | $150,446.00 589,151.370 CRV | 0.2726% |
40 | ![]() | CRV-TRY | $0.2601 0.0000990 Eth | $135,483.00 524,751.400 CRV | 0.2428% |
41 | ![]() | CRV-BTC | $0.2576 0.0000981 Eth | $132,796.00 516,653.100 CRV | 0.2390% |
42 | ![]() | CRV-USDT | $0.2571 0.0000979 Eth | $127,650.00 499,798.000 CRV | 0.2312% |
43 | ![]() | CRV-TRY | $0.2583 0.0000983 Eth | $118,291.00 457,985.840 CRV | 0.2119% |
44 | ![]() | CRV-USDT | $0.2573 0.0000979 Eth | $115,470.00 452,336.800 CRV | 0.2093% |
45 | ![]() | CRV-THB | $0.2584 0.0000984 Eth | $114,776.00 444,143.786 CRV | 0.2055% |
46 | ![]() | CRV-USDT | $0.2572 0.0000979 Eth | $113,367.00 444,017.900 CRV | 0.2054% |
47 | ![]() | CRV-USD | $0.2574 0.0000979 Eth | $102,689.00 399,024.000 CRV | 0.1846% |
48 | ![]() | CRV-USD | $0.257 0.0000978 Eth | $99,210.00 386,029.860 CRV | 0.1786% |
49 | ![]() | CRV-USDT | $0.257 0.0000978 Eth | $88,646.00 344,875.300 CRV | 0.1596% |
50 | ![]() | CRV-USDT | $0.2573 0.0000979 Eth | $85,537.00 334,832.446 CRV | 0.1549% |
51 | ![]() | CRV-EUR | $0.2588 0.0000985 Eth | $84,032.00 324,721.014 CRV | 0.1502% |
52 | ![]() | CRV-USDC | $0.2575 0.0000979 Eth | $68,312.00 267,239.300 CRV | 0.1236% |
53 | ![]() | CRV-BTC | $0.257 0.0000978 Eth | $67,534.00 263,185.181 CRV | 0.1218% |
54 | ![]() | CRV-USDT | $0.2572 0.0000979 Eth | $58,605.00 227,896.618 CRV | 0.1054% |
55 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2584 0.0000983 Eth | $45,463.00 175,979.801 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0814% |
56 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599 | $0.2596 0.0000988 Eth | $44,908.00 175,913.442 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0814% |
57 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2574 0.0000980 Eth | $43,701.00 171,366.380 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0793% |
58 | ![]() | CRV-USDT | $0.2579 0.0000982 Eth | $43,508.00 168,668.841 CRV | 0.0780% |
59 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2571 0.0000979 Eth | $42,035.00 162,816.660 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0753% |
60 | ![]() | CRV-USDT | $0.2571 0.0000978 Eth | $40,058.00 162,191.200 CRV | 0.0750% |
61 | ![]() | CRV-USDT | $0.2577 0.0000981 Eth | $37,184.00 145,598.500 CRV | 0.0674% |
62 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2571 0.0000979 Eth | $37,053.00 144,220.411 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0667% |
63 | ![]() | CRV-USDT | $0.2571 0.0000978 Eth | $33,028.00 128,479.827 CRV | 0.0594% |
64 | ![]() | CRV-USDT | $0.2574 0.0000980 Eth | $26,293.00 103,102.629 CRV | 0.0477% |
65 | ![]() | CRV-USDT | $0.2577 0.0000981 Eth | $25,791.00 100,064.056 CRV | 0.0463% |
66 | ![]() | CRV-BTC | $0.2571 0.0000978 Eth | $21,807.00 84,820.000 CRV | 0.0392% |
67 | ![]() | CRV-USD | $0.2575 0.0000980 Eth | $21,464.00 83,356.225 CRV | 0.0386% |
68 | ![]() | CRV-BTC | $0.2565 0.0000976 Eth | $16,891.17 65,863.100 CRV | 0.0305% |
69 | ![]() | CRV-TRY | $0.2604 0.0000991 Eth | $15,438.90 60,052.103 CRV | 0.0278% |
70 | ![]() | CRV-USD | $0.259 0.0000986 Eth | $15,345.34 59,248.400 CRV | 0.0274% |
71 | ![]() | CRV-USDT | $0.2576 0.0000979 Eth | $14,092.46 54,703.201 CRV | 0.0253% |
72 | ![]() | CRV-BTC | $0.2576 0.0000981 Eth | $12,210.33 53,236.000 CRV | 0.0246% |
73 | ![]() | CRV-USDT | $0.2581 0.0000983 Eth | $11,857.18 46,434.402 CRV | 0.0215% |
74 | ![]() | CRV-BTC | $0.2564 0.0000976 Eth | $11,821.90 46,108.930 CRV | 0.0213% |
75 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2571 0.0000978 Eth | $11,362.22 44,360.042 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0205% |
76 | ![]() | CRV-USD | $0.2567 0.0000977 Eth | $9,809.09 38,213.766 CRV | 0.0177% |
77 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2577 0.0000981 Eth | $8,783.18 34,239.204 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0158% |
78 | ![]() | CRV-ETH | $0.2576 0.0000981 Eth | $8,124.09 31,534.760 CRV | 0.0146% |
79 | ![]() | CRV-USDT | $0.2575 0.0000980 Eth | $7,369.57 28,624.179 CRV | 0.0132% |
80 | ![]() | CRV-EUR | $0.2578 0.0000982 Eth | $7,327.30 28,417.820 CRV | 0.0131% |
81 | ![]() | CRV-EUR | $0.2578 0.0000982 Eth | $6,808.72 26,406.576 CRV | 0.0122% |
82 | ![]() | CRV-USDT | $0.2574 0.0000980 Eth | $6,154.54 23,912.663 CRV | 0.0111% |
83 | ![]() | CRV-USDC | $0.2582 0.0000983 Eth | $5,704.01 22,491.375 CRV | 0.0104% |
84 | ![]() | CRV-XBT | $0.2564 0.0000976 Eth | $4,279.53 16,691.427 CRV | 0.0077% |
85 | ![]() | CRV-GBP | $0.256 0.0000975 Eth | $4,105.32 16,033.700 CRV | 0.0074% |
86 | ![]() | CRV-USDT | $0.2575 0.0000980 Eth | $3,963.41 15,554.348 CRV | 0.0072% |
87 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2583 0.0000983 Eth | $2,492.51 9,733.226 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0045% |
88 | ![]() | CRV-BTC | $0.2576 0.0000981 Eth | $2,193.07 8,513.100 CRV | 0.0039% |
89 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2586 0.0000984 Eth | $1,934.62 7,539.731 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0035% |
90 | ![]() | CRV-USDT | $0.2576 0.0000980 Eth | $1,874.07 7,335.300 CRV | 0.0034% |
91 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.2545 0.0000969 Eth | $1,727.40 6,729.014 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0031% |
92 | ![]() | CRV-EUR | $0.2574 0.0000978 Eth | $1,306.15 5,074.301 CRV | 0.0023% |
93 | ![]() | CRV-ETH | $0.2578 0.0000981 Eth | $827.88 3,228.110 CRV | 0.0015% |
94 | ![]() | CRV-BTC | $0.2595 0.0000988 Eth | $647.15 2,517.946 CRV | 0.0012% |
95 | ![]() | CRV-USDT | $0.2576 0.0000980 Eth | $530.48 2,058.968 CRV | 0.0010% |
96 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2576 0.0000979 Eth | $146.80 569.477 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0003% |
97 | ![]() | CRV-USD | $0.2555 0.0000973 Eth | $50.06 195.926 CRV | 0.0001% |
98 | ![]() | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $0.2576 0.0000985 Eth | $42.56 136.069 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0001% |
99 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.2595 0.0000987 Eth | $32.82 127.700 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
100 | ![]() | CRV-USDT | $0.2581 0.0000982 Eth | $29.87 116.763 CRV | 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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