Overview
Max Total Supply
2,166,461,449.024562272446330273 CRV
Holders
87,896 ( 0.010%)
Market
Price
$0.26 @ 0.000116 ETH (-5.13%)
Onchain Market Cap
$569,886,843.03
Circulating Supply Market Cap
$314,085,311.85
Other Info
Token Contract (WITH 18 Decimals)
Balance
138.90251764 CRVValue
$36.54 ( ~0.0161106422924457 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $0.2631 0.0001159 Eth | $31,396,838.00 116,501,214.600 CRV | 28.5126% |
2 | BloFin | CRV-USDT | $0.2624 0.0001159 Eth | $11,624,616.00 43,091,373.100 CRV | 10.5462% |
3 | Gate.io | CRV-USDT | $0.2632 0.0001160 Eth | $9,479,836.00 35,313,197.340 CRV | 8.6426% |
4 | HTX | CRV-USDT | $0.2631 0.0001159 Eth | $7,704,959.00 28,722,312.494 CRV | 7.0295% |
5 | OKX | CRV-USDT | $0.2632 0.0001160 Eth | $5,078,882.00 18,863,870.362 CRV | 4.6168% |
6 | Websea | CRV-USDT | $0.2632 0.0001159 Eth | $4,654,255.00 0.000 CRV | 0.0000% |
7 | Bitunix | CRV-USDT | $0.2632 0.0001160 Eth | $4,455,817.00 16,924,649.200 CRV | 4.1422% |
8 | LBank | CRV-USDT | $0.2631 0.0001159 Eth | $3,860,868.00 14,676,812.420 CRV | 3.5920% |
9 | Bybit | CRV-USDT | $0.2632 0.0001160 Eth | $3,656,582.00 13,598,577.070 CRV | 3.3281% |
10 | XT.COM | CRV-USDT | $0.2631 0.0001160 Eth | $2,519,424.00 9,347,275.600 CRV | 2.2877% |
11 | Phemex | CRV-USDT | $0.263 0.0001159 Eth | $2,125,119.00 8,081,558.980 CRV | 1.9779% |
12 | Coinbase Exchange | CRV-USD | $0.2633 0.0001160 Eth | $2,017,844.00 7,663,668.010 CRV | 1.8756% |
13 | Slex | CRV-USDT | $0.263 0.0001158 Eth | $2,007,989.00 7,451,097.700 CRV | 1.8236% |
14 | WhiteBIT | CRV-USDT | $0.2631 0.0001158 Eth | $1,760,245.00 6,689,438.712 CRV | 1.6372% |
15 | Hotcoin | CRV-USDT | $0.2631 0.0001158 Eth | $1,687,261.00 6,412,138.314 CRV | 1.5693% |
16 | DigiFinex | CRV-USDT | $0.2632 0.0001160 Eth | $1,580,909.00 6,007,092.400 CRV | 1.4702% |
17 | Trubit | CRV-USDT | $0.2629 0.0001158 Eth | $1,489,204.00 5,532,088.600 CRV | 1.3539% |
18 | BYDFi | CRV-USDT | $0.2626 0.0001160 Eth | $1,055,728.00 4,020,775.300 CRV | 0.9840% |
19 | Dex-Trade | CRV-USDT | $0.2634 0.0001160 Eth | $1,053,377.00 3,999,096.706 CRV | 0.9787% |
20 | KuCoin | CRV-USDT | $0.2624 0.0001156 Eth | $971,593.00 3,702,116.480 CRV | 0.9061% |
21 | Biconomy.com | CRV-USDT | $0.2632 0.0001160 Eth | $968,426.00 3,594,781.800 CRV | 0.8798% |
22 | CoinW | CRV-USDT | $0.2633 0.0001159 Eth | $754,198.00 2,863,995.314 CRV | 0.7009% |
23 | CoinCatch | CRV-USDT | $0.263 0.0001159 Eth | $738,590.00 2,754,971.592 CRV | 0.6743% |
24 | Kraken | CRV-USD | $0.264 0.0001163 Eth | $722,572.00 2,737,014.208 CRV | 0.6699% |
25 | Toobit | CRV-USDT | $0.2631 0.0001159 Eth | $651,473.00 2,417,715.500 CRV | 0.5917% |
26 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2635 0.0001161 Eth | $580,688.00 2,176,024.341 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.5326% |
27 | HitBTC | CRV-USDT | $0.263 0.0001159 Eth | $563,750.00 2,104,987.100 CRV | 0.5152% |
28 | FMFW.io | CRV-USDT | $0.2628 0.0001157 Eth | $553,037.00 2,104,763.300 CRV | 0.5151% |
29 | PointPay | CRV-USDT | $0.2632 0.0001160 Eth | $520,831.00 1,932,843.100 CRV | 0.4730% |
30 | Binance | CRV-BTC | $0.2631 0.0001159 Eth | $510,297.00 1,918,230.300 CRV | 0.4695% |
31 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2647 0.0001166 Eth | $475,006.00 1,769,470.662 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4331% |
32 | Bitvavo | CRV-EUR | $0.2639 0.0001163 Eth | $462,881.00 1,753,842.556 CRV | 0.4292% |
33 | Coinstore | CRV-USDT | $0.2628 0.0001158 Eth | $441,697.00 1,639,339.300 CRV | 0.4012% |
34 | BingX | CRV-USDT | $0.2633 0.0001160 Eth | $391,105.00 1,452,359.755 CRV | 0.3555% |
35 | AscendEX (BitMax) | CRV-USDT | $0.2619 0.0001154 Eth | $349,442.00 1,334,086.500 CRV | 0.3265% |
36 | BitMart | CRV-USDT | $0.2631 0.0001160 Eth | $335,780.00 1,276,042.140 CRV | 0.3123% |
37 | Binance | CRV-USDC | $0.2627 0.0001158 Eth | $328,832.00 1,215,874.700 CRV | 0.2976% |
38 | FMCPAY | CRV-USDT | $0.2631 0.0001159 Eth | $295,450.00 1,101,392.940 CRV | 0.2696% |
39 | Tapbit | CRV-USDT | $0.2631 0.0001160 Eth | $284,770.00 1,057,138.300 CRV | 0.2587% |
40 | Bitazza | CRV-USDT | $0.264 0.0001162 Eth | $278,939.00 1,040,298.200 CRV | 0.2546% |
41 | Bitget | CRV-USDT | $0.2633 0.0001160 Eth | $240,815.00 890,172.178 CRV | 0.2179% |
42 | Tokenize | CRV-SGD | $0.2626 0.0001157 Eth | $223,150.00 849,718.204 CRV | 0.2080% |
43 | P2B | CRV-USDT | $0.2629 0.0001159 Eth | $222,553.00 846,424.400 CRV | 0.2072% |
44 | Bitkub | CRV-THB | $0.2643 0.0001164 Eth | $213,853.00 809,270.434 CRV | 0.1981% |
45 | P2B | CRV-USD | $0.262 0.0001154 Eth | $207,969.00 793,775.330 CRV | 0.1943% |
46 | LocalTrade | CRV-USDT | $0.263 0.0001159 Eth | $207,219.00 787,804.576 CRV | 0.1928% |
47 | Nominex | CRV-USDT | $0.2631 0.0001158 Eth | $204,878.00 778,697.363 CRV | 0.1906% |
48 | BTSE | CRV-USDT | $0.2632 0.0001160 Eth | $184,378.00 700,632.787 CRV | 0.1715% |
49 | MEXC | CRV-USDT | $0.2633 0.0001160 Eth | $151,943.00 577,127.762 CRV | 0.1412% |
50 | Fairdesk | CRV-USDT | $0.2632 0.0001159 Eth | $151,202.00 574,393.000 CRV | 0.1406% |
51 | Currency.com | CRV-USD | $0.2632 0.0001159 Eth | $144,542.00 549,276.000 CRV | 0.1344% |
52 | WhiteBIT | CRV-BTC | $0.2634 0.0001159 Eth | $142,654.00 541,649.500 CRV | 0.1326% |
53 | BitDelta | CRV-USDT | $0.2632 0.0001159 Eth | $134,374.00 499,702.300 CRV | 0.1223% |
54 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2655 0.0001170 Eth | $113,628.00 411,078.094 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.1006% |
55 | CoinEx | CRV-USDT | $0.2629 0.0001158 Eth | $109,526.00 412,408.358 CRV | 0.1009% |
56 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2644 0.0001169 Eth | $93,256.00 193,040.425 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0472% |
57 | WhiteBIT | CRV-TRY | $0.2656 0.0001169 Eth | $81,800.00 308,040.600 CRV | 0.0754% |
58 | BigONE | CRV-USDT | $0.263 0.0001159 Eth | $67,816.00 257,894.881 CRV | 0.0631% |
59 | Icrypex | CRV-TRY | $0.2656 0.0001169 Eth | $60,561.00 228,008.736 CRV | 0.0558% |
60 | Bitget | CRV-BTC | $0.2631 0.0001159 Eth | $57,581.00 216,355.258 CRV | 0.0530% |
61 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2621 0.0001155 Eth | $53,190.00 198,661.350 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0486% |
62 | LATOKEN | CRV-BTC | $0.2631 0.0001159 Eth | $51,823.00 196,989.593 CRV | 0.0482% |
63 | WEEX | CRV-USDT | $0.2631 0.0001160 Eth | $50,297.00 186,963.000 CRV | 0.0458% |
64 | Pionex | CRV-USDT | $0.2629 0.0001158 Eth | $50,248.00 186,767.625 CRV | 0.0457% |
65 | XT.COM | CRV-BTC | $0.2631 0.0001159 Eth | $48,718.00 195,065.000 CRV | 0.0477% |
66 | Dex-Trade | CRV-BTC | $0.2626 0.0001156 Eth | $42,820.00 163,040.000 CRV | 0.0399% |
67 | Deepcoin | CRV-USDT | $0.2628 0.0001158 Eth | $42,354.00 161,921.023 CRV | 0.0396% |
68 | Coinbase Exchange | CRV-EUR | $0.2632 0.0001160 Eth | $39,546.00 150,268.860 CRV | 0.0368% |
69 | Kraken | CRV-EUR | $0.2639 0.0001163 Eth | $37,326.00 141,415.604 CRV | 0.0346% |
70 | LATOKEN | CRV-USDT | $0.2631 0.0001160 Eth | $34,063.00 129,445.458 CRV | 0.0317% |
71 | Gemini | CRV-USD | $0.2615 0.0001152 Eth | $30,341.00 116,027.792 CRV | 0.0284% |
72 | OKX | CRV-USDC | $0.2653 0.0001169 Eth | $30,307.00 114,366.937 CRV | 0.0280% |
73 | Coinbase Exchange | CRV-BTC | $0.2652 0.0001169 Eth | $16,299.75 61,454.360 CRV | 0.0150% |
74 | Bitso | CRV-USD | $0.2626 0.0001156 Eth | $14,613.21 55,656.647 CRV | 0.0136% |
75 | Azbit | CRV-USDT | $0.2632 0.0001160 Eth | $13,707.39 51,101.324 CRV | 0.0125% |
76 | HashKey Global | CRV-USDT | $0.2628 0.0001157 Eth | $12,181.31 45,089.900 CRV | 0.0110% |
77 | Icrypex | CRV-USDT | $0.2621 0.0001155 Eth | $11,668.07 44,510.799 CRV | 0.0109% |
78 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599 | $0.2601 0.0001146 Eth | $11,486.25 43,268.455 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0106% |
79 | Coinbase Exchange | CRV-GBP | $0.2617 0.0001153 Eth | $9,296.79 35,521.820 CRV | 0.0087% |
80 | Upbit | CRV-BTC | $0.2642 0.0001164 Eth | $8,668.46 32,811.274 CRV | 0.0080% |
81 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2629 0.0001159 Eth | $7,506.61 28,104.301 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0069% |
82 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2623 0.0001156 Eth | $7,139.31 26,731.272 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0065% |
83 | P2B | CRV-BTC | $0.262 0.0001154 Eth | $6,284.93 23,989.600 CRV | 0.0059% |
84 | Indodax | CRV-IDR | $0.2629 0.0001158 Eth | $6,145.11 23,374.476 CRV | 0.0057% |
85 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.2643 0.0001163 Eth | $4,384.62 16,300.304 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0040% |
86 | Nonkyc.io | CRV-USDT | $0.2628 0.0001158 Eth | $4,225.41 15,722.045 CRV | 0.0038% |
87 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.263 0.0001164 Eth | $3,746.84 14,096.774 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0035% |
88 | TokoCrypto | CRV-USDT | $0.2622 0.0001155 Eth | $3,378.85 12,887.434 CRV | 0.0032% |
89 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $0.2623 0.0001156 Eth | $3,126.65 11,623.925 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0028% |
90 | Kraken | CRV-XBT | $0.2652 0.0001169 Eth | $2,880.68 10,860.551 CRV | 0.0027% |
91 | Gate.io | CRV-ETH | $0.2631 0.0001159 Eth | $2,804.30 10,506.590 CRV | 0.0026% |
92 | Bitstamp | CRV-EUR | $0.2629 0.0001157 Eth | $1,842.14 7,006.905 CRV | 0.0017% |
93 | MEXC | CRV-ETH | $0.263 0.0001159 Eth | $1,627.46 6,187.680 CRV | 0.0015% |
94 | Nonkyc.io | CRV-BTC | $0.2605 0.0001146 Eth | $1,083.16 4,082.881 CRV | 0.0010% |
95 | Bitstamp | CRV-USD | $0.2624 0.0001156 Eth | $453.22 1,727.010 CRV | 0.0004% |
96 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | $0.264 0.0001162 Eth | $409.65 1,520.697 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0004% |
97 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2629 0.0001158 Eth | $266.58 1,000.318 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0002% |
98 | Balancer V2 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.2635 0.0001161 Eth | $85.43 321.721 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
99 | CEX.IO | CRV-USDT | $0.2639 0.0001163 Eth | $49.54 182.657 CRV | 0.0000% |
100 | CEX.IO | CRV-USD | $0.264 0.0001163 Eth | $25.59 94.816 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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