Overview
Max Total Supply
2,177,175,406.073252487037541629 CRV
Holders
88,122 ( 0.005%)
Market
Price
$0.25 @ 0.000105 ETH (-3.19%)
Onchain Market Cap
$549,189,605.29
Circulating Supply Market Cap
$303,578,916.68
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $0.2514 0.0001051 Eth | $9,333,115.00 36,298,883.700 CRV | 24.7603% |
2 | HTX | CRV-USDT | $0.2515 0.0001051 Eth | $4,134,203.00 16,061,174.729 CRV | 10.9557% |
3 | BloFin | CRV-USDT | $0.2513 0.0001050 Eth | $2,902,520.00 11,296,020.800 CRV | 7.7053% |
4 | Bybit | CRV-USDT | $0.2512 0.0001050 Eth | $1,920,481.00 7,481,233.400 CRV | 5.1031% |
5 | OKX | CRV-USDT | $0.2509 0.0001049 Eth | $1,767,263.00 6,874,018.167 CRV | 4.6889% |
6 | Trubit | CRV-USDT | $0.2515 0.0001051 Eth | $1,440,069.00 5,605,237.900 CRV | 3.8235% |
7 | Websea | CRV-USDT | $0.2511 0.0001049 Eth | $1,356,129.00 0.000 CRV | 0.0000% |
8 | Gate.io | CRV-USDT | $0.2512 0.0001050 Eth | $1,307,520.00 5,086,815.700 CRV | 3.4698% |
9 | Biconomy.com | CRV-USDT | $0.2513 0.0001050 Eth | $1,218,890.00 4,742,928.000 CRV | 3.2353% |
10 | LBank | CRV-USDT | $0.2513 0.0001049 Eth | $1,106,798.00 4,404,155.360 CRV | 3.0042% |
11 | Coinbase Exchange | CRV-USD | $0.2509 0.0001048 Eth | $921,446.00 3,672,563.280 CRV | 2.5051% |
12 | Phemex | CRV-USDT | $0.2515 0.0001051 Eth | $730,326.00 2,903,687.880 CRV | 1.9807% |
13 | XT.COM | CRV-USDT | $0.2514 0.0001050 Eth | $673,588.00 2,619,890.900 CRV | 1.7871% |
14 | Slex | CRV-USDT | $0.2512 0.0001050 Eth | $593,309.00 2,307,448.700 CRV | 1.5740% |
15 | Bullish | CRV-USDC | $0.2511 0.0001049 Eth | $528,595.00 2,062,130.841 CRV | 1.4066% |
16 | DigiFinex | CRV-USDT | $0.2511 0.0001049 Eth | $478,969.00 1,907,633.900 CRV | 1.3012% |
17 | Hotcoin | CRV-USDT | $0.2513 0.0001050 Eth | $444,298.00 1,768,143.300 CRV | 1.2061% |
18 | Bitunix | CRV-USDT | $0.2515 0.0001050 Eth | $427,212.00 1,698,649.300 CRV | 1.1587% |
19 | CoinW | CRV-USDT | $0.2512 0.0001050 Eth | $405,732.00 1,615,168.495 CRV | 1.1017% |
20 | FameEX | CRV-USDT | $0.2513 0.0001050 Eth | $370,694.00 1,442,035.936 CRV | 0.9836% |
21 | AscendEX (BitMax) | CRV-USDT | $0.2502 0.0001045 Eth | $353,064.00 1,411,242.500 CRV | 0.9626% |
22 | BYDFi | CRV-USDT | $0.253 0.0001055 Eth | $350,477.00 1,385,550.500 CRV | 0.9451% |
23 | HitBTC | CRV-USDT | $0.2513 0.0001050 Eth | $316,266.00 1,231,709.500 CRV | 0.8402% |
24 | Bitrue | CRV-XRP | $0.2514 0.0001050 Eth | $314,358.00 1,250,657.190 CRV | 0.8531% |
25 | FMFW.io | CRV-USDT | $0.2512 0.0001049 Eth | $309,541.00 1,232,082.300 CRV | 0.8404% |
26 | Dex-Trade | CRV-USDT | $0.2508 0.0001048 Eth | $304,018.00 1,212,346.000 CRV | 0.8270% |
27 | KuCoin | CRV-USDT | $0.2512 0.0001050 Eth | $295,711.00 1,177,188.637 CRV | 0.8030% |
28 | Bitazza | CRV-USDT | $0.2505 0.0001047 Eth | $285,393.00 1,111,265.500 CRV | 0.7580% |
29 | Bitrue | CRV-USDC | $0.2511 0.0001049 Eth | $278,474.00 1,108,997.670 CRV | 0.7565% |
30 | Coinstore | CRV-USDT | $0.2504 0.0001046 Eth | $257,439.00 1,001,712.000 CRV | 0.6833% |
31 | WhiteBIT | CRV-BTC | $0.2514 0.0001051 Eth | $230,370.00 916,437.300 CRV | 0.6251% |
32 | Toobit | CRV-USDT | $0.2512 0.0001050 Eth | $224,466.00 872,887.200 CRV | 0.5954% |
33 | Binance | CRV-USDC | $0.2512 0.0001050 Eth | $193,636.00 753,043.300 CRV | 0.5137% |
34 | FMCPAY | CRV-USDT | $0.2516 0.0001051 Eth | $190,956.00 741,341.180 CRV | 0.5057% |
35 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2516 0.0001051 Eth | $188,479.00 736,934.919 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.5027% |
36 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2524 0.0001054 Eth | $185,536.00 78.135 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0001% |
37 | PointPay | CRV-USDT | $0.2518 0.0001052 Eth | $151,890.00 591,018.802 CRV | 0.4031% |
38 | Kraken | CRV-USD | $0.252 0.0001053 Eth | $136,422.00 541,356.086 CRV | 0.3693% |
39 | Bitkub | CRV-THB | $0.2526 0.0001055 Eth | $130,873.00 518,113.951 CRV | 0.3534% |
40 | Bitvavo | CRV-EUR | $0.2525 0.0001055 Eth | $130,281.00 516,011.798 CRV | 0.3520% |
41 | BitMart | CRV-USDT | $0.2519 0.0001052 Eth | $127,202.00 505,032.560 CRV | 0.3445% |
42 | Bitget | CRV-USDT | $0.2513 0.0001050 Eth | $115,411.00 451,472.921 CRV | 0.3080% |
43 | CoinEx | CRV-USDT | $0.2515 0.0001051 Eth | $109,723.00 427,151.861 CRV | 0.2914% |
44 | Tapbit | CRV-USDT | $0.2515 0.0001050 Eth | $106,605.00 414,778.300 CRV | 0.2829% |
45 | BitDelta | CRV-USDT | $0.2511 0.0001049 Eth | $105,052.00 408,631.300 CRV | 0.2787% |
46 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | $0.2531 0.0001058 Eth | $101,114.00 401,116.176 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.2736% |
47 | Binance | CRV-TRY | $0.2537 0.0001059 Eth | $89,703.00 346,740.300 CRV | 0.2365% |
48 | Binance | CRV-BTC | $0.2513 0.0001050 Eth | $86,767.00 340,858.100 CRV | 0.2325% |
49 | WhiteBIT | CRV-TRY | $0.2537 0.0001060 Eth | $78,667.00 310,094.900 CRV | 0.2115% |
50 | P2B | CRV-USD | $0.251 0.0001049 Eth | $77,687.00 309,508.370 CRV | 0.2111% |
51 | BTSE | CRV-USDT | $0.251 0.0001049 Eth | $72,243.00 287,830.175 CRV | 0.1963% |
52 | P2B | CRV-USDT | $0.251 0.0001048 Eth | $71,346.00 284,273.100 CRV | 0.1939% |
53 | MEXC | CRV-USDT | $0.2515 0.0001050 Eth | $70,913.00 281,950.026 CRV | 0.1923% |
54 | Globe | CRV-USDT | $0.2507 0.0001047 Eth | $65,095.00 253,560.715 CRV | 0.1730% |
55 | LocalTrade | CRV-USDT | $0.2517 0.0001051 Eth | $61,392.00 243,948.311 CRV | 0.1664% |
56 | Bitget | CRV-BTC | $0.2513 0.0001050 Eth | $53,743.00 210,397.693 CRV | 0.1435% |
57 | Fairdesk | CRV-USDT | $0.2514 0.0001050 Eth | $51,181.00 203,604.000 CRV | 0.1389% |
58 | Icrypex | CRV-TRY | $0.253 0.0001057 Eth | $50,350.00 199,001.987 CRV | 0.1357% |
59 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2525 0.0001053 Eth | $48,910.00 190,298.600 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1298% |
60 | Nonkyc.io | CRV-USDT | $0.2528 0.0001056 Eth | $42,071.00 163,661.790 CRV | 0.1116% |
61 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.252 0.0001053 Eth | $41,820.00 76,219.855 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0520% |
62 | Deepcoin | CRV-USDT | $0.251 0.0001049 Eth | $41,039.00 162,030.200 CRV | 0.1105% |
63 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.2514 0.0001050 Eth | $37,281.00 148,463.597 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1013% |
64 | Bithumb | CRV-KRW | $0.2524 0.0001055 Eth | $37,143.00 147,136.799 CRV | 0.1004% |
65 | Coinbase Exchange | CRV-EUR | $0.2517 0.0001052 Eth | $35,140.00 139,605.930 CRV | 0.0952% |
66 | WEEX | CRV-USDT | $0.2514 0.0001050 Eth | $33,703.00 131,260.000 CRV | 0.0895% |
67 | KickEX | CRV-USDT | $0.252 0.0001053 Eth | $33,124.00 131,457.723 CRV | 0.0897% |
68 | Gemini | CRV-USD | $0.2513 0.0001050 Eth | $32,870.00 130,800.812 CRV | 0.0892% |
69 | OKX | CRV-USDC | $0.2531 0.0001058 Eth | $25,803.00 100,101.576 CRV | 0.0683% |
70 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2512 0.0001050 Eth | $23,707.00 93,681.089 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0639% |
71 | Pionex | CRV-USDT | $0.251 0.0001049 Eth | $20,712.00 80,548.742 CRV | 0.0549% |
72 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2533 0.0001059 Eth | $17,402.93 68,471.882 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0467% |
73 | Crypto.com Exchange | CRV-USD | $0.2513 0.0001050 Eth | $17,266.30 68,707.900 CRV | 0.0469% |
74 | LATOKEN | CRV-USDT | $0.2517 0.0001051 Eth | $16,016.44 63,632.790 CRV | 0.0434% |
75 | Nonkyc.io | CRV-BTC | $0.2507 0.0001047 Eth | $14,753.79 57,855.076 CRV | 0.0395% |
76 | LATOKEN | CRV-BTC | $0.2519 0.0001052 Eth | $14,541.29 57,715.388 CRV | 0.0394% |
77 | Bitfinex | CRV-USD | $0.2517 0.0001052 Eth | $13,847.63 55,022.986 CRV | 0.0375% |
78 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.252 0.0001053 Eth | $13,422.53 52,839.859 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0360% |
79 | Coinbase Exchange | CRV-GBP | $0.2526 0.0001055 Eth | $13,280.24 52,576.490 CRV | 0.0359% |
80 | Kraken | CRV-EUR | $0.2526 0.0001056 Eth | $13,103.03 51,875.522 CRV | 0.0354% |
81 | Bit2Me | CRV-EUR | $0.2526 0.0001055 Eth | $12,980.55 50,838.012 CRV | 0.0347% |
82 | Azbit | CRV-USDT | $0.252 0.0001053 Eth | $12,636.63 49,177.717 CRV | 0.0335% |
83 | Luno | CRV-MYR | $0.2541 0.0001062 Eth | $11,132.13 43,806.020 CRV | 0.0299% |
84 | TokoCrypto | CRV-USDT | $0.2523 0.0001053 Eth | $10,137.80 40,185.786 CRV | 0.0274% |
85 | Curve (Ethereum) | 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2524 0.0001055 Eth | $9,922.12 39,779.338 0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5 | 0.0271% |
86 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2516 0.0001052 Eth | $7,720.09 30,530.721 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0208% |
87 | WOO X | CRV-USDT | $0.2511 0.0001049 Eth | $6,677.57 26,595.352 CRV | 0.0181% |
88 | Bitso | CRV-USD | $0.2532 0.0001057 Eth | $6,070.88 23,979.480 CRV | 0.0164% |
89 | Bitfinex | CRV-USDT | $0.2525 0.0001055 Eth | $4,250.07 16,833.960 CRV | 0.0115% |
90 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.2524 0.0001055 Eth | $2,613.35 10,220.234 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0070% |
91 | Curve (Ethereum) | 0XFCC5C47BE19D06BF83EB04298B026F81069FF65B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.2528 0.0001056 Eth | $801.47 3,325.459 0XFCC5C47BE19D06BF83EB04298B026F81069FF65B | 0.0023% |
92 | MEXC | CRV-ETH | $0.2519 0.0001052 Eth | $623.28 2,474.355 CRV | 0.0017% |
93 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | $0.2539 0.0001060 Eth | $399.61 1,558.882 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0011% |
94 | Gate.io | CRV-USDC | $0.2528 0.0001057 Eth | $49.49 192.510 CRV | 0.0001% |
95 | CEX.IO | CRV-USDC | $0.2524 0.0001054 Eth | $22.17 85.712 CRV | 0.0001% |
96 | CEX.IO | CRV-USDT | $0.2517 0.0001051 Eth | $16.49 64.284 CRV | 0.0000% |
97 | CEX.IO | CRV-USD | $0.252 0.0001052 Eth | $15.06 58.927 CRV | 0.0000% |
98 | Coinmetro | CRV-USD | $0.2511 0.0001049 Eth | $0.00 0.000 CRV | 0.0000% |
99 | Coinmetro | CRV-EUR | $0.251 0.0001049 Eth | $0.00 0.000 CRV | 0.0000% |
100 | Coinmetro | CRV-USDC | $0.2509 0.0001049 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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