Overview
Max Total Supply
2,207,917,943.510301828065698455 CRV
Holders
88,891 ( 0.012%)
Market
Price
$0.92 @ 0.000276 ETH (-10.05%)
Onchain Market Cap
$2,025,252,337.59
Circulating Supply Market Cap
$1,154,566,693.59
Other Info
Token Contract (WITH 18 Decimals)
Balance
1.5 CRVValue
$1.38 ( ~0.000414954982803947 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | BTCC | CRV-USDT | $0.9163 0.0002756 Eth | $78,880,136.00 80,808,638.000 CRV | 19.9542% |
2 | Binance | CRV-USDT | $0.917 0.0002760 Eth | $64,480,784.00 66,351,883.600 CRV | 16.3844% |
3 | WhiteBIT | CRV-USDT | $0.9133 0.0002751 Eth | $40,551,190.00 44,399,802.874 CRV | 10.9637% |
4 | Websea | CRV-USDT | $0.9166 0.0002764 Eth | $26,486,187.00 0.000 CRV | 0.0000% |
5 | OKX | CRV-USDT | $0.9173 0.0002761 Eth | $18,163,577.00 18,730,840.231 CRV | 4.6252% |
6 | Gate.io | CRV-USDT | $0.9177 0.0002764 Eth | $16,028,667.00 16,397,161.949 CRV | 4.0490% |
7 | HTX | CRV-USDT | $0.9169 0.0002760 Eth | $12,842,355.00 13,131,783.190 CRV | 3.2427% |
8 | Coinbase Exchange | CRV-USD | $0.9174 0.0002765 Eth | $12,065,322.00 13,151,647.710 CRV | 3.2476% |
9 | Bybit | CRV-USDT | $0.9157 0.0002756 Eth | $10,213,190.00 10,501,469.410 CRV | 2.5932% |
10 | Bitget | CRV-USDT | $0.9164 0.0002758 Eth | $9,794,238.00 9,981,658.006 CRV | 2.4648% |
11 | MEXC | CRV-USDT | $0.9159 0.0002758 Eth | $7,410,793.00 8,091,629.972 CRV | 1.9981% |
12 | Azbit | CRV-USDT | $0.9183 0.0002768 Eth | $6,225,585.00 6,400,927.640 CRV | 1.5806% |
13 | Niza Global | CRV-USD | $0.932 0.0002779 Eth | $5,851,659.00 6,024,315.891 CRV | 1.4876% |
14 | Kraken | CRV-USD | $0.915 0.0002752 Eth | $5,641,384.00 6,165,446.606 CRV | 1.5224% |
15 | BIT | CRV-USDT | $0.9203 0.0002760 Eth | $5,475,330.00 5,949,764.466 CRV | 1.4692% |
16 | Bitunix | CRV-USDT | $0.9161 0.0002759 Eth | $5,406,657.00 5,900,798.700 CRV | 1.4571% |
17 | XT.COM | CRV-USDT | $0.9183 0.0002768 Eth | $5,144,535.00 5,294,016.100 CRV | 1.3073% |
18 | CoinW | CRV-USDT | $0.9153 0.0002760 Eth | $4,266,555.00 4,661,566.267 CRV | 1.1511% |
19 | Trubit | CRV-USDT | $0.9229 0.0002765 Eth | $4,256,956.00 4,364,794.500 CRV | 1.0778% |
20 | Slex | CRV-USDT | $0.9145 0.0002759 Eth | $3,975,542.00 4,094,961.900 CRV | 1.0112% |
21 | DigiFinex | CRV-USDT | $0.9164 0.0002758 Eth | $3,399,666.00 3,709,908.600 CRV | 0.9161% |
22 | KuCoin | CRV-USDT | $0.9143 0.0002750 Eth | $3,134,399.00 3,428,192.030 CRV | 0.8465% |
23 | LBank | CRV-USDT | $0.9162 0.0002759 Eth | $3,049,788.00 3,328,642.820 CRV | 0.8219% |
24 | Hotcoin | CRV-USDT | $0.9175 0.0002767 Eth | $2,959,899.00 3,226,186.600 CRV | 0.7966% |
25 | Phemex | CRV-USDT | $0.9171 0.0002760 Eth | $2,584,644.00 2,818,359.270 CRV | 0.6959% |
26 | FameEX | CRV-USDT | $0.9167 0.0002763 Eth | $2,580,556.00 2,654,294.356 CRV | 0.6554% |
27 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.9152 0.0002756 Eth | $2,570,208.00 2,693,564.685 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.6651% |
28 | BYDFi | CRV-USDT | $0.9159 0.0002761 Eth | $2,540,750.00 2,774,177.100 CRV | 0.6850% |
29 | Bullish | CRV-USDC | $0.9164 0.0002758 Eth | $2,381,002.00 2,437,450.331 CRV | 0.6019% |
30 | FMCPAY | CRV-USDT | $0.9126 0.0002754 Eth | $2,315,228.00 2,370,569.330 CRV | 0.5854% |
31 | HitBTC | CRV-USDT | $0.9169 0.0002762 Eth | $2,169,686.00 2,218,196.000 CRV | 0.5477% |
32 | Biconomy.com | CRV-USDT | $0.9205 0.0002761 Eth | $2,114,044.00 2,168,223.400 CRV | 0.5354% |
33 | Dex-Trade | CRV-USDT | $0.9158 0.0002755 Eth | $2,065,137.00 2,255,009.700 CRV | 0.5568% |
34 | Bitrue | CRV-XRP | $0.9155 0.0002754 Eth | $2,060,568.00 2,250,797.590 CRV | 0.5558% |
35 | FMFW.io | CRV-USDT | $0.9169 0.0002764 Eth | $2,044,381.00 2,229,767.800 CRV | 0.5506% |
36 | BTSE | CRV-USDT | $0.9181 0.0002767 Eth | $2,030,102.00 2,211,296.031 CRV | 0.5460% |
37 | Coinstore | CRV-USDT | $0.9174 0.0002756 Eth | $1,801,514.00 1,851,735.900 CRV | 0.4573% |
38 | Bitrue | CRV-USDT | $0.9163 0.0002763 Eth | $1,796,129.00 1,960,280.300 CRV | 0.4841% |
39 | Luno | CRV-MYR | $0.9287 0.0002799 Eth | $1,515,815.00 1,632,252.870 CRV | 0.4031% |
40 | WEEX | CRV-USDT | $0.9164 0.0002762 Eth | $1,500,661.00 1,637,629.756 CRV | 0.4044% |
41 | Bitvavo | CRV-EUR | $0.9274 0.0002765 Eth | $1,469,056.00 1,583,995.697 CRV | 0.3911% |
42 | Bitrue | CRV-USDC | $0.916 0.0002755 Eth | $1,291,815.00 1,410,208.060 CRV | 0.3482% |
43 | Toobit | CRV-USDT | $0.9166 0.0002760 Eth | $1,282,355.00 1,319,498.000 CRV | 0.3258% |
44 | Bitkub | CRV-THB | $0.9202 0.0002768 Eth | $1,187,048.00 1,289,939.046 CRV | 0.3185% |
45 | Binance | CRV-USDC | $0.9147 0.0002752 Eth | $1,130,962.00 1,187,953.700 CRV | 0.2933% |
46 | Hibt | CRV-USDT | $0.9154 0.0002757 Eth | $1,087,841.00 1,122,492.596 CRV | 0.2772% |
47 | WhiteBIT | CRV-BTC | $0.9141 0.0002755 Eth | $1,039,199.00 1,136,826.100 CRV | 0.2807% |
48 | Ourbit | CRV-USDT | $0.9163 0.0002760 Eth | $1,035,712.00 1,064,035.140 CRV | 0.2627% |
49 | Binance | CRV-TRY | $0.9246 0.0002777 Eth | $974,170.00 997,817.900 CRV | 0.2464% |
50 | PointPay | CRV-USDT | $0.9257 0.0002773 Eth | $972,528.00 1,005,960.283 CRV | 0.2484% |
51 | Binance | CRV-BTC | $0.9165 0.0002758 Eth | $952,144.00 991,914.500 CRV | 0.2449% |
52 | BingX | CRV-USDT | $0.9165 0.0002758 Eth | $938,268.00 963,108.060 CRV | 0.2378% |
53 | CoinEx | CRV-USDT | $0.9122 0.0002752 Eth | $778,622.00 800,388.674 CRV | 0.1976% |
54 | Niza Global | CRV-EUR | $0.9216 0.0002778 Eth | $660,628.00 692,219.196 CRV | 0.1709% |
55 | Bit2Me | CRV-EUR | $0.9216 0.0002778 Eth | $654,516.00 678,374.812 CRV | 0.1675% |
56 | Kraken | CRV-EUR | $0.9154 0.0002753 Eth | $638,686.00 697,739.757 CRV | 0.1723% |
57 | BitMart | CRV-USDT | $0.9139 0.0002749 Eth | $631,132.00 690,592.040 CRV | 0.1705% |
58 | P2B | CRV-USD | $0.925 0.0002767 Eth | $497,248.00 537,565.350 CRV | 0.1327% |
59 | BitDelta | CRV-USDT | $0.9172 0.0002762 Eth | $495,724.00 505,414.300 CRV | 0.1248% |
60 | OKX | CRV-USDC | $0.9175 0.0002761 Eth | $458,622.00 465,407.900 CRV | 0.1149% |
61 | LocalTrade | CRV-USDT | $0.9244 0.0002771 Eth | $423,491.00 458,119.002 CRV | 0.1131% |
62 | Coinbase Exchange | CRV-GBP | $0.9176 0.0002764 Eth | $420,309.00 458,072.950 CRV | 0.1131% |
63 | BloFin | CRV-USDT | $0.916 0.0002761 Eth | $378,263.00 392,917.300 CRV | 0.0970% |
64 | WhiteBIT | CRV-TRY | $0.9238 0.0002774 Eth | $360,088.00 389,806.400 CRV | 0.0963% |
65 | Coinbase Exchange | CRV-EUR | $0.9165 0.0002760 Eth | $334,722.00 365,214.040 CRV | 0.0902% |
66 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.9142 0.0002758 Eth | $308,014.00 323,421.234 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0799% |
67 | Tokenize | CRV-USD | $0.9155 0.0002754 Eth | $293,223.00 320,287.591 CRV | 0.0791% |
68 | Tokenize | CRV-SGD | $0.9147 0.0002757 Eth | $293,056.00 320,375.048 CRV | 0.0791% |
69 | Pionex | CRV-USDT | $0.9226 0.0002765 Eth | $273,867.00 281,843.856 CRV | 0.0696% |
70 | BVOX | CRV-USDT | $0.9152 0.0002756 Eth | $222,833.00 228,436.300 CRV | 0.0564% |
71 | Nonkyc.io | CRV-USDT | $0.9145 0.0002759 Eth | $221,617.00 228,864.869 CRV | 0.0565% |
72 | Curve (Optimism) | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.9316 0.0002796 Eth | $190,387.00 200,339.130 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0495% |
73 | Icrypex | CRV-USDT | $0.9172 0.0002762 Eth | $178,943.00 195,098.239 CRV | 0.0482% |
74 | Gemini | CRV-USD | $0.9131 0.0002748 Eth | $174,014.00 190,574.500 CRV | 0.0471% |
75 | Deepcoin | CRV-USDT | $0.9231 0.0002755 Eth | $156,550.00 164,148.784 CRV | 0.0405% |
76 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.9249 0.0002791 Eth | $148,677.00 203,159.659 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0502% |
77 | Bitso | CRV-USD | $0.9165 0.0002757 Eth | $122,104.00 133,232.827 CRV | 0.0329% |
78 | BigONE | CRV-USDT | $0.9137 0.0002754 Eth | $113,289.00 123,995.029 CRV | 0.0306% |
79 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.9157 0.0002758 Eth | $106,273.00 113,825.486 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0281% |
80 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.9137 0.0002748 Eth | $71,616.00 76,420.767 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0189% |
81 | LATOKEN | CRV-USDT | $0.9139 0.0002752 Eth | $69,121.00 75,632.045 CRV | 0.0187% |
82 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.9288 0.0002768 Eth | $64,095.00 36,524.596 0X4200000000000000000000000000000000000042 | 0.0090% |
83 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.9147 0.0002752 Eth | $53,217.00 56,058.170 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0138% |
84 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.9173 0.0002759 Eth | $40,625.00 43,156.900 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0107% |
85 | TokoCrypto | CRV-USDT | $0.9309 0.0002774 Eth | $39,875.00 42,835.999 CRV | 0.0106% |
86 | Globe | CRV-USDT | $0.9218 0.0002768 Eth | $23,535.00 24,504.274 CRV | 0.0061% |
87 | CEX.IO | CRV-USD | $0.917 0.0002762 Eth | $23,140.00 23,117.435 CRV | 0.0057% |
88 | HashKey Global | CRV-USDT | $0.9108 0.0002739 Eth | $16,068.85 16,470.800 CRV | 0.0041% |
89 | MEXC | CRV-ETH | $0.9153 0.0002757 Eth | $14,480.34 15,819.653 CRV | 0.0039% |
90 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $0.9145 0.0002751 Eth | $14,123.39 14,465.992 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0036% |
91 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.9153 0.0002759 Eth | $12,195.23 12,906.399 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0032% |
92 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.9194 0.0002769 Eth | $9,701.63 10,232.281 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0025% |
93 | HitBTC | CRV-BTC | $0.9156 0.0002758 Eth | $8,677.72 9,042.000 CRV | 0.0022% |
94 | FMFW.io | CRV-BTC | $0.9157 0.0002756 Eth | $8,280.15 9,042.400 CRV | 0.0022% |
95 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $0.9154 0.0002753 Eth | $8,253.95 8,549.929 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0021% |
96 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.9224 0.0002776 Eth | $1,039.24 1,083.223 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0003% |
97 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.9145 0.0002751 Eth | $590.80 629.704 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0002% |
98 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.9253 0.0002784 Eth | $230.04 235.090 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
99 | CEX.IO | CRV-USDT | $0.9168 0.0002757 Eth | $56.49 55.000 CRV | 0.0000% |
100 | Coinmetro | CRV-USDT | $0.9298 0.0002772 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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