Overview
Max Total Supply
2,176,745,038.063032133149909244 CRV
Holders
88,115 ( 0.010%)
Market
Price
$0.26 @ 0.000108 ETH (+1.00%)
Onchain Market Cap
$560,268,221.22
Circulating Supply Market Cap
$309,395,476.79
Other Info
Token Contract (WITH 18 Decimals)
Balance
82.403615079234705307 CRVValue
$21.21 ( ~0.00892328109925573 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | WhiteBIT | CRV-USDT | $0.2575 0.0001082 Eth | $25,266,805.00 98,137,096.257 CRV | 26.2333% |
2 | Binance | CRV-USDT | $0.2574 0.0001082 Eth | $17,841,005.00 69,816,998.000 CRV | 18.6630% |
3 | BloFin | CRV-USDT | $0.2576 0.0001083 Eth | $6,547,100.00 25,635,319.200 CRV | 6.8527% |
4 | HTX | CRV-USDT | $0.2577 0.0001084 Eth | $5,364,787.00 20,981,792.409 CRV | 5.6087% |
5 | Gate.io | CRV-USDT | $0.2575 0.0001083 Eth | $4,296,142.00 16,819,904.900 CRV | 4.4962% |
6 | OKX | CRV-USDT | $0.2578 0.0001084 Eth | $3,888,740.00 15,185,661.153 CRV | 4.0593% |
7 | Bybit | CRV-USDT | $0.2576 0.0001084 Eth | $3,397,102.00 13,274,722.130 CRV | 3.5485% |
8 | Websea | CRV-USDT | $0.2575 0.0001082 Eth | $2,649,292.00 0.000 CRV | 0.0000% |
9 | LBank | CRV-USDT | $0.2572 0.0001082 Eth | $2,191,785.00 8,522,857.520 CRV | 2.2783% |
10 | Biconomy.com | CRV-USDT | $0.2572 0.0001082 Eth | $1,622,165.00 6,342,877.200 CRV | 1.6955% |
11 | Coinbase Exchange | CRV-USD | $0.2574 0.0001083 Eth | $1,616,271.00 6,279,218.760 CRV | 1.6785% |
12 | Phemex | CRV-USDT | $0.2575 0.0001083 Eth | $1,519,038.00 5,900,057.510 CRV | 1.5772% |
13 | Trubit | CRV-USDT | $0.2574 0.0001083 Eth | $1,442,424.00 5,627,213.800 CRV | 1.5042% |
14 | XT.COM | CRV-USDT | $0.2575 0.0001083 Eth | $1,340,234.00 5,245,273.700 CRV | 1.4021% |
15 | Slex | CRV-USDT | $0.2577 0.0001083 Eth | $1,124,403.00 4,399,958.900 CRV | 1.1762% |
16 | Bitvavo | CRV-EUR | $0.2576 0.0001083 Eth | $1,042,184.00 4,045,648.751 CRV | 1.0815% |
17 | Bullish | CRV-USDC | $0.2574 0.0001083 Eth | $1,031,171.00 4,039,292.089 CRV | 1.0798% |
18 | DigiFinex | CRV-USDT | $0.2575 0.0001083 Eth | $973,446.00 3,779,740.100 CRV | 1.0104% |
19 | Bitunix | CRV-USDT | $0.2573 0.0001082 Eth | $918,255.00 3,567,901.200 CRV | 0.9537% |
20 | CoinW | CRV-USDT | $0.2574 0.0001082 Eth | $874,906.00 3,398,711.965 CRV | 0.9085% |
21 | Byte Exchange | CRV-USDT | $0.2581 0.0001085 Eth | $853,736.00 3,308,334.819 CRV | 0.8844% |
22 | Hotcoin | CRV-USDT | $0.2576 0.0001083 Eth | $726,813.00 2,821,787.100 CRV | 0.7543% |
23 | FameEX | CRV-USDT | $0.2573 0.0001082 Eth | $707,396.00 2,769,191.376 CRV | 0.7402% |
24 | BYDFi | CRV-USDT | $0.2576 0.0001084 Eth | $638,604.00 2,479,233.500 CRV | 0.6627% |
25 | WhiteBIT | CRV-BTC | $0.2573 0.0001081 Eth | $616,951.00 2,397,552.900 CRV | 0.6409% |
26 | Toobit | CRV-USDT | $0.2575 0.0001082 Eth | $611,239.00 2,411,123.210 CRV | 0.6445% |
27 | Bitrue | CRV-XRP | $0.2568 0.0001080 Eth | $599,866.00 2,336,294.290 CRV | 0.6245% |
28 | Dex-Trade | CRV-USDT | $0.2575 0.0001083 Eth | $592,590.00 2,301,683.500 CRV | 0.6153% |
29 | FMFW.io | CRV-USDT | $0.2574 0.0001082 Eth | $519,493.00 2,018,050.900 CRV | 0.5395% |
30 | HitBTC | CRV-USDT | $0.2575 0.0001083 Eth | $516,805.00 2,016,762.700 CRV | 0.5391% |
31 | KuCoin | CRV-USDT | $0.2578 0.0001084 Eth | $504,026.00 1,954,854.111 CRV | 0.5226% |
32 | Bitrue | CRV-USDC | $0.2572 0.0001082 Eth | $423,816.00 1,647,752.600 CRV | 0.4405% |
33 | Coinstore | CRV-USDT | $0.258 0.0001085 Eth | $416,277.00 1,629,064.800 CRV | 0.4355% |
34 | AscendEX (BitMax) | CRV-USDT | $0.2567 0.0001079 Eth | $372,779.00 1,452,423.600 CRV | 0.3883% |
35 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2575 0.0001083 Eth | $353,770.00 350,910.309 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.0938% |
36 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2566 0.0001079 Eth | $328,476.00 1,292,733.192 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3456% |
37 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2568 0.0001080 Eth | $315,490.00 1,224,755.487 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.3274% |
38 | PointPay | CRV-USDT | $0.2574 0.0001082 Eth | $286,785.00 1,122,096.595 CRV | 0.3000% |
39 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2572 0.0001082 Eth | $285,571.00 1,107,838.210 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.2961% |
40 | Bitazza | CRV-USDT | $0.2584 0.0001087 Eth | $273,339.00 1,065,706.800 CRV | 0.2849% |
41 | Binance | CRV-USDC | $0.2572 0.0001082 Eth | $236,274.00 918,227.600 CRV | 0.2455% |
42 | FMCPAY | CRV-USDT | $0.2575 0.0001082 Eth | $214,178.00 836,876.000 CRV | 0.2237% |
43 | BitMart | CRV-USDT | $0.2574 0.0001082 Eth | $212,794.00 826,815.180 CRV | 0.2210% |
44 | Coinbase Exchange | CRV-EUR | $0.2577 0.0001084 Eth | $187,030.00 725,787.950 CRV | 0.1940% |
45 | Tapbit | CRV-USDT | $0.2574 0.0001082 Eth | $170,582.00 667,282.000 CRV | 0.1784% |
46 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2576 0.0001083 Eth | $165,282.00 164,244.101 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0439% |
47 | Bitget | CRV-USDT | $0.2577 0.0001084 Eth | $156,141.00 614,816.135 CRV | 0.1643% |
48 | P2B | CRV-USD | $0.257 0.0001080 Eth | $140,630.00 547,196.830 CRV | 0.1463% |
49 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $0.2584 0.0001087 Eth | $137,956.00 539,023.008 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1441% |
50 | Nominex | CRV-USDT | $0.2577 0.0001083 Eth | $131,239.00 509,245.874 CRV | 0.1361% |
51 | P2B | CRV-USDT | $0.2569 0.0001080 Eth | $130,573.00 508,217.800 CRV | 0.1359% |
52 | Globe | CRV-USDT | $0.2577 0.0001084 Eth | $128,861.00 502,508.690 CRV | 0.1343% |
53 | ProBit Global | CRV-USDT | $0.2576 0.0001083 Eth | $126,814.00 492,365.622 CRV | 0.1316% |
54 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | $0.2581 0.0001085 Eth | $125,765.00 488,711.589 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1306% |
55 | BitDelta | CRV-USDT | $0.2576 0.0001082 Eth | $124,499.00 486,445.800 CRV | 0.1300% |
56 | LocalTrade | CRV-USDT | $0.2575 0.0001083 Eth | $122,317.00 475,047.824 CRV | 0.1270% |
57 | Bitkub | CRV-THB | $0.2566 0.0001079 Eth | $119,701.00 466,467.920 CRV | 0.1247% |
58 | Kraken | CRV-USD | $0.258 0.0001085 Eth | $109,556.00 424,634.568 CRV | 0.1135% |
59 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2574 0.0001083 Eth | $101,353.00 391,536.103 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.1047% |
60 | Fairdesk | CRV-USDT | $0.2576 0.0001083 Eth | $90,877.00 352,823.000 CRV | 0.0943% |
61 | MEXC | CRV-USDT | $0.2574 0.0001083 Eth | $88,338.00 343,134.460 CRV | 0.0917% |
62 | BTSE | CRV-USDT | $0.2573 0.0001082 Eth | $82,287.00 319,784.099 CRV | 0.0855% |
63 | Binance | CRV-BTC | $0.2571 0.0001081 Eth | $72,422.00 281,447.700 CRV | 0.0752% |
64 | Nonkyc.io | CRV-USDT | $0.2567 0.0001080 Eth | $67,944.00 265,963.504 CRV | 0.0711% |
65 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2576 0.0001083 Eth | $65,958.00 122,702.126 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0328% |
66 | CoinEx | CRV-USDT | $0.2583 0.0001086 Eth | $63,353.00 248,222.400 CRV | 0.0664% |
67 | OKX | CRV-USDC | $0.2575 0.0001083 Eth | $62,518.00 243,163.642 CRV | 0.0650% |
68 | WEEX | CRV-USDT | $0.2581 0.0001086 Eth | $59,343.00 232,128.000 CRV | 0.0621% |
69 | Bitget | CRV-BTC | $0.2571 0.0001081 Eth | $57,075.00 220,720.262 CRV | 0.0590% |
70 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2584 0.0001087 Eth | $52,666.00 203,906.408 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0545% |
71 | Icrypex | CRV-TRY | $0.2572 0.0001081 Eth | $51,439.00 199,988.308 CRV | 0.0535% |
72 | Binance | CRV-TRY | $0.2578 0.0001084 Eth | $51,267.00 200,615.600 CRV | 0.0536% |
73 | Gemini | CRV-USD | $0.259 0.0001089 Eth | $45,389.00 175,248.676 CRV | 0.0468% |
74 | Deepcoin | CRV-USDT | $0.2569 0.0001081 Eth | $40,701.00 162,392.400 CRV | 0.0434% |
75 | Pionex | CRV-USDT | $0.2574 0.0001083 Eth | $36,742.00 143,647.203 CRV | 0.0384% |
76 | KickEX | CRV-USDT | $0.2576 0.0001084 Eth | $34,317.00 133,197.074 CRV | 0.0356% |
77 | Coinbase Exchange | CRV-GBP | $0.2576 0.0001084 Eth | $33,156.00 128,698.500 CRV | 0.0344% |
78 | Crypto.com Exchange | CRV-USD | $0.2576 0.0001083 Eth | $30,691.00 119,144.000 CRV | 0.0318% |
79 | Bitfinex | CRV-USDT | $0.2574 0.0001083 Eth | $28,102.00 109,161.281 CRV | 0.0292% |
80 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2575 0.0001083 Eth | $25,462.00 13,244.934 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0035% |
81 | LATOKEN | CRV-USDT | $0.2573 0.0001082 Eth | $25,288.00 98,268.073 CRV | 0.0263% |
82 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2572 0.0001082 Eth | $21,714.00 84,384.121 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0226% |
83 | Bitfinex | CRV-USD | $0.258 0.0001085 Eth | $17,268.12 66,938.471 CRV | 0.0179% |
84 | Curve (Ethereum) | 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2575 0.0001083 Eth | $13,106.03 51,291.461 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | 0.0137% |
85 | LATOKEN | CRV-BTC | $0.2565 0.0001079 Eth | $12,737.29 49,661.270 CRV | 0.0133% |
86 | Kraken | CRV-EUR | $0.2581 0.0001086 Eth | $12,556.09 48,645.620 CRV | 0.0130% |
87 | Bit2Me | CRV-EUR | $0.2581 0.0001085 Eth | $12,304.97 47,672.708 CRV | 0.0127% |
88 | Azbit | CRV-USDT | $0.2574 0.0001083 Eth | $9,862.87 38,545.840 CRV | 0.0103% |
89 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599 | $0.2577 0.0001084 Eth | $7,309.36 28,224.794 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0075% |
90 | WOO X | CRV-USDT | $0.2578 0.0001084 Eth | $4,389.56 17,029.483 CRV | 0.0046% |
91 | Coinmetro | CRV-USD | $0.2576 0.0001083 Eth | $4,120.84 16,000.000 CRV | 0.0043% |
92 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.2569 0.0001081 Eth | $1,965.67 7,571.235 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0020% |
93 | OKX | CRV-EUR | $0.2575 0.0001083 Eth | $1,902.87 7,358.973 CRV | 0.0020% |
94 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | $0.2581 0.0001084 Eth | $1,525.30 5,905.556 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0016% |
95 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2584 0.0001087 Eth | $1,500.01 5,829.417 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0016% |
96 | MEXC | CRV-ETH | $0.2575 0.0001083 Eth | $965.29 3,749.424 CRV | 0.0010% |
97 | TokoCrypto | CRV-USDT | $0.2575 0.0001083 Eth | $658.29 2,556.725 CRV | 0.0007% |
98 | CEX.IO | CRV-USDT | $0.2575 0.0001083 Eth | $23.82 91.069 CRV | 0.0000% |
99 | Coinmetro | CRV-EUR | $0.2575 0.0001083 Eth | $0.00 0.000 CRV | 0.0000% |
100 | Coinmetro | CRV-USDC | $0.2575 0.0001083 Eth | $0.00 0.000 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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