Overview
Max Total Supply
2,200,919,202.34852455719382961 CRV
Holders
88,566 ( 0.005%)
Market
Price
$1.15 @ 0.000289 ETH (-6.96%)
Onchain Market Cap
$2,540,903,365.39
Circulating Supply Market Cap
$1,439,338,084.71
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.16 0.0002895 Eth | $108,482,171.00 91,035,228.100 CRV | 26.1560% |
2 | Websea | CRV-USDT | $1.16 0.0002897 Eth | $57,519,182.00 0.000 CRV | 0.0000% |
3 | Gate.io | CRV-USDT | $1.15 0.0002888 Eth | $34,708,705.00 29,025,879.050 CRV | 8.3396% |
4 | OKX | CRV-USDT | $1.16 0.0002897 Eth | $29,779,734.00 24,995,930.306 CRV | 7.1818% |
5 | Slex | CRV-USDT | $1.16 0.0002900 Eth | $22,893,126.00 19,243,122.600 CRV | 5.5289% |
6 | Coinbase Exchange | CRV-USD | $1.15 0.0002889 Eth | $17,521,830.00 15,203,323.230 CRV | 4.3682% |
7 | MEXC | CRV-USDT | $1.15 0.0002886 Eth | $16,400,914.00 14,254,859.965 CRV | 4.0957% |
8 | Bybit | CRV-USDT | $1.16 0.0002897 Eth | $14,874,452.00 12,473,404.030 CRV | 3.5838% |
9 | Bitunix | CRV-USDT | $1.15 0.0002891 Eth | $14,693,966.00 12,755,278.300 CRV | 3.6648% |
10 | HTX | CRV-USDT | $1.16 0.0002896 Eth | $12,654,373.00 10,570,262.996 CRV | 3.0370% |
11 | Bitget | CRV-USDT | $1.16 0.0002897 Eth | $12,585,300.00 10,530,284.780 CRV | 3.0255% |
12 | BTSE | CRV-USDT | $1.15 0.0002891 Eth | $11,509,118.00 9,985,571.512 CRV | 2.8690% |
13 | XT.COM | CRV-USDT | $1.16 0.0002918 Eth | $8,483,686.00 7,106,394.000 CRV | 2.0418% |
14 | DigiFinex | CRV-USDT | $1.16 0.0002898 Eth | $5,738,820.00 4,959,031.800 CRV | 1.4248% |
15 | Kraken | CRV-USD | $1.16 0.0002893 Eth | $5,110,787.00 4,424,924.035 CRV | 1.2714% |
16 | LBank | CRV-USDT | $1.15 0.0002885 Eth | $4,611,544.00 4,008,428.640 CRV | 1.1517% |
17 | KuCoin | CRV-USDT | $1.16 0.0002894 Eth | $4,363,803.00 3,776,730.711 CRV | 1.0851% |
18 | FameEX | CRV-USDT | $1.15 0.0002888 Eth | $4,314,323.00 3,619,567.979 CRV | 1.0400% |
19 | CoinW | CRV-USDT | $1.15 0.0002895 Eth | $4,171,163.00 3,614,801.347 CRV | 1.0386% |
20 | BYDFi | CRV-USDT | $1.16 0.0002894 Eth | $4,064,978.00 3,518,334.900 CRV | 1.0109% |
21 | Biconomy.com | CRV-USDT | $1.15 0.0002885 Eth | $3,622,466.00 3,041,252.410 CRV | 0.8738% |
22 | Dex-Trade | CRV-USDT | $1.16 0.0002917 Eth | $3,501,803.00 3,010,000.800 CRV | 0.8648% |
23 | Bitvavo | CRV-EUR | $1.15 0.0002895 Eth | $3,350,569.00 2,902,688.380 CRV | 0.8340% |
24 | HitBTC | CRV-USDT | $1.15 0.0002893 Eth | $3,108,462.00 2,607,576.000 CRV | 0.7492% |
25 | FMFW.io | CRV-USDT | $1.15 0.0002895 Eth | $3,004,069.00 2,602,283.000 CRV | 0.7477% |
26 | Phemex | CRV-USDT | $1.15 0.0002887 Eth | $3,003,389.00 2,609,338.310 CRV | 0.7497% |
27 | Coinstore | CRV-USDT | $1.16 0.0002907 Eth | $2,977,620.00 2,492,815.500 CRV | 0.7162% |
28 | FMCPAY | CRV-USDT | $1.15 0.0002882 Eth | $2,850,746.00 2,397,199.060 CRV | 0.6888% |
29 | Bullish | CRV-USDC | $1.15 0.0002887 Eth | $2,649,158.00 2,228,419.404 CRV | 0.6403% |
30 | Binance | CRV-TRY | $1.17 0.0002929 Eth | $2,605,207.00 2,172,002.200 CRV | 0.6241% |
31 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.15 0.0002884 Eth | $2,574,827.00 2,162,859.450 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.6214% |
32 | Bitrue | CRV-USDT | $1.15 0.0002885 Eth | $2,432,633.00 2,111,965.100 CRV | 0.6068% |
33 | Luno | CRV-MYR | $1.17 0.0002923 Eth | $2,351,773.00 2,018,147.070 CRV | 0.5798% |
34 | CoinEx | CRV-USDT | $1.16 0.0002919 Eth | $2,270,887.00 1,903,810.087 CRV | 0.5470% |
35 | Bitkub | CRV-THB | $1.17 0.0002921 Eth | $2,211,417.00 1,898,093.443 CRV | 0.5454% |
36 | Binance | CRV-BTC | $1.16 0.0002895 Eth | $2,189,468.00 1,835,229.200 CRV | 0.5273% |
37 | Trubit | CRV-USDT | $1.15 0.0002882 Eth | $2,140,001.00 1,803,950.800 CRV | 0.5183% |
38 | Toobit | CRV-USDT | $1.15 0.0002896 Eth | $2,139,465.00 1,794,338.000 CRV | 0.5155% |
39 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.19 0.0002970 Eth | $1,830,310.00 459.990 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0001% |
40 | BingX | CRV-USDT | $1.15 0.0002877 Eth | $1,825,615.00 1,531,507.287 CRV | 0.4400% |
41 | Hibt | CRV-USDT | $1.15 0.0002895 Eth | $1,775,301.00 1,488,344.024 CRV | 0.4276% |
42 | Ourbit | CRV-USDT | $1.15 0.0002889 Eth | $1,760,994.00 1,477,337.270 CRV | 0.4245% |
43 | PointPay | CRV-USDT | $1.15 0.0002886 Eth | $1,650,636.00 1,388,780.052 CRV | 0.3990% |
44 | WEEX | CRV-USDT | $1.15 0.0002887 Eth | $1,505,349.00 1,308,005.668 CRV | 0.3758% |
45 | Bithumb | CRV-KRW | $1.13 0.0002830 Eth | $1,297,019.00 1,148,183.872 CRV | 0.3299% |
46 | WhiteBIT | CRV-BTC | $1.15 0.0002893 Eth | $1,211,012.00 1,050,034.700 CRV | 0.3017% |
47 | BitMart | CRV-USDT | $1.15 0.0002887 Eth | $1,034,926.00 899,014.840 CRV | 0.2583% |
48 | Currency.com | CRV-USD | $1.16 0.0002894 Eth | $939,325.00 813,198.000 CRV | 0.2336% |
49 | OKX | CRV-USDC | $1.15 0.0002882 Eth | $910,699.00 767,408.597 CRV | 0.2205% |
50 | P2B | CRV-USD | $1.16 0.0002898 Eth | $809,528.00 700,890.090 CRV | 0.2014% |
51 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $1.17 0.0002928 Eth | $668,712.00 535,752.598 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1539% |
52 | Hotcoin | CRV-USDT | $1.15 0.0002893 Eth | $640,675.00 554,745.371 CRV | 0.1594% |
53 | BitDelta | CRV-USDT | $1.15 0.0002888 Eth | $626,418.00 525,161.600 CRV | 0.1509% |
54 | Nonkyc.io | CRV-USDT | $1.15 0.0002886 Eth | $595,660.00 500,926.934 CRV | 0.1439% |
55 | Bit2Me | CRV-EUR | $1.15 0.0002882 Eth | $538,984.00 452,234.984 CRV | 0.1299% |
56 | Bitso | CRV-USD | $1.14 0.0002855 Eth | $531,851.00 466,859.535 CRV | 0.1341% |
57 | Kraken | CRV-EUR | $1.15 0.0002876 Eth | $529,753.00 461,475.249 CRV | 0.1326% |
58 | Coinbase Exchange | CRV-EUR | $1.15 0.0002883 Eth | $524,479.00 456,040.560 CRV | 0.1310% |
59 | Icrypex | CRV-USDT | $1.17 0.0002926 Eth | $479,205.00 410,645.247 CRV | 0.1180% |
60 | Gemini | CRV-USD | $1.15 0.0002881 Eth | $429,406.00 373,364.431 CRV | 0.1073% |
61 | WhiteBIT | CRV-TRY | $1.15 0.0002893 Eth | $412,370.00 357,607.000 CRV | 0.1027% |
62 | Pionex | CRV-USDT | $1.15 0.0002888 Eth | $385,161.00 322,047.191 CRV | 0.0925% |
63 | LATOKEN | CRV-BTC | $1.16 0.0002905 Eth | $373,245.00 322,472.649 CRV | 0.0927% |
64 | BloFin | CRV-USDT | $1.15 0.0002889 Eth | $368,290.00 308,827.700 CRV | 0.0887% |
65 | AscendEX (BitMax) | CRV-USDT | $1.15 0.0002891 Eth | $344,942.00 298,909.900 CRV | 0.0859% |
66 | WEEX | CRV-USDC | $1.16 0.0002899 Eth | $334,417.00 280,279.000 CRV | 0.0805% |
67 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.17 0.0002932 Eth | $324,390.00 283,339.263 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0814% |
68 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.17 0.0002928 Eth | $284,633.00 292,875.529 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0841% |
69 | BVOX | CRV-USDT | $1.15 0.0002896 Eth | $216,070.00 181,133.200 CRV | 0.0520% |
70 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.16 0.0002906 Eth | $203,252.00 172,189.522 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0495% |
71 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.15 0.0002890 Eth | $168,523.00 64,657.994 0X4200000000000000000000000000000000000042 | 0.0186% |
72 | Coinbase Exchange | CRV-GBP | $1.15 0.0002888 Eth | $153,369.00 133,107.680 CRV | 0.0382% |
73 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.15 0.0002893 Eth | $148,709.00 125,926.404 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0362% |
74 | Korbit | CRV-KRW | $1.13 0.0002833 Eth | $106,740.00 92,668.303 CRV | 0.0266% |
75 | LATOKEN | CRV-USDT | $1.15 0.0002885 Eth | $106,025.00 92,115.004 CRV | 0.0265% |
76 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.16 0.0002900 Eth | $102,941.00 87,009.040 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0250% |
77 | BigONE | CRV-USDT | $1.15 0.0002892 Eth | $93,917.00 81,462.866 CRV | 0.0234% |
78 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.15 0.0002894 Eth | $91,582.00 76,788.458 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0221% |
79 | Bitstamp | CRV-USD | $1.16 0.0002911 Eth | $78,551.00 67,595.522 CRV | 0.0194% |
80 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.15 0.0002894 Eth | $73,676.00 61,750.588 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0177% |
81 | TokoCrypto | CRV-USDT | $1.15 0.0002887 Eth | $62,522.00 54,245.532 CRV | 0.0156% |
82 | Azbit | CRV-USDT | $1.15 0.0002895 Eth | $60,441.00 50,804.654 CRV | 0.0146% |
83 | Binance US | CRV-USDT | $1.17 0.0002934 Eth | $57,236.00 48,955.128 CRV | 0.0141% |
84 | Bitstamp | CRV-EUR | $1.17 0.0002934 Eth | $37,766.00 32,245.420 CRV | 0.0093% |
85 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.17 0.0002927 Eth | $36,134.00 30,579.012 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0088% |
86 | Globe | CRV-USDT | $1.17 0.0002933 Eth | $27,868.00 22,812.526 CRV | 0.0066% |
87 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.15 0.0002885 Eth | $15,757.62 13,212.090 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0038% |
88 | HashKey Global | CRV-USDT | $1.17 0.0002922 Eth | $15,613.56 13,115.500 CRV | 0.0038% |
89 | Gate.io | CRV-BTC | $1.15 0.0002888 Eth | $13,089.43 10,976.534 CRV | 0.0032% |
90 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.15 0.0002886 Eth | $12,263.41 10,266.285 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0029% |
91 | CEX.IO | CRV-USD | $1.15 0.0002891 Eth | $12,240.58 9,880.799 CRV | 0.0028% |
92 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.15 0.0002896 Eth | $11,558.85 9,821.314 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0028% |
93 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.17 0.0002925 Eth | $11,470.20 9,595.265 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0028% |
94 | CEX.IO | CRV-USDT | $1.15 0.0002888 Eth | $7,636.31 6,412.963 CRV | 0.0018% |
95 | Luno | CRV-XBT | $1.17 0.0002930 Eth | $6,459.50 5,531.800 CRV | 0.0016% |
96 | Gate.io | CRV-ETH | $1.15 0.0002892 Eth | $5,526.13 4,625.580 CRV | 0.0013% |
97 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.16 0.0002896 Eth | $4,405.22 3,731.062 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0011% |
98 | Coinone | CRV-KRW | $1.13 0.0002835 Eth | $3,678.29 3,250.142 CRV | 0.0009% |
99 | Nominex | CRV-USDT | $1.17 0.0002921 Eth | $266.36 227.668 CRV | 0.0001% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.16 0.0002912 Eth | $96.99 82.552 0X172370D5CD63279EFA6D502DAB29171933A610AF | 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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