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Overview
Max Total Supply
2,200,071,960.678319126969642295 CRV
Holders
88,654 ( 0.012%)
Market
Price
$1.11 @ 0.000282 ETH (-1.33%)
Onchain Market Cap
$2,433,312,171.92
Circulating Supply Market Cap
$1,378,196,538.62
Other Info
Token Contract (WITH 18 Decimals)
Balance
933.92503260428383886 CRVValue
$1,032.93 ( ~0.263415849506812 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.094 0.0002793 Eth | $226,559,875.00 208,866,134.700 CRV | 23.3444% |
2 | WhiteBIT | CRV-USDT | $1.10 0.0002820 Eth | $94,181,799.00 85,302,935.082 CRV | 9.5341% |
3 | Gate.io | CRV-USDT | $1.094 0.0002792 Eth | $91,658,961.00 84,438,926.603 CRV | 9.4375% |
4 | OKX | CRV-USDT | $1.095 0.0002795 Eth | $69,567,031.00 64,001,241.615 CRV | 7.1533% |
5 | MEXC | CRV-USDT | $1.095 0.0002796 Eth | $50,159,344.00 45,823,890.817 CRV | 5.1216% |
6 | Bitget | CRV-USDT | $1.094 0.0002792 Eth | $38,779,303.00 35,098,466.244 CRV | 3.9229% |
7 | Coinbase Exchange | CRV-USD | $1.094 0.0002788 Eth | $37,468,368.00 34,245,835.380 CRV | 3.8276% |
8 | Bybit | CRV-USDT | $1.096 0.0002798 Eth | $36,143,414.00 33,076,842.620 CRV | 3.6969% |
9 | Bitunix | CRV-USDT | $1.092 0.0002789 Eth | $34,630,844.00 31,708,780.500 CRV | 3.5440% |
10 | HTX | CRV-USDT | $1.097 0.0002800 Eth | $33,236,519.00 30,513,499.448 CRV | 3.4104% |
11 | Slex | CRV-USDT | $1.094 0.0002793 Eth | $21,084,300.00 19,317,976.200 CRV | 2.1591% |
12 | XT.COM | CRV-USDT | $1.10 0.0002824 Eth | $18,327,923.00 16,889,724.000 CRV | 1.8877% |
13 | BTSE | CRV-USDT | $1.095 0.0002791 Eth | $17,766,580.00 16,220,066.303 CRV | 1.8129% |
14 | LBank | CRV-USDT | $1.093 0.0002791 Eth | $15,084,954.00 13,795,586.790 CRV | 1.5419% |
15 | DigiFinex | CRV-USDT | $1.094 0.0002793 Eth | $12,561,011.00 11,478,032.300 CRV | 1.2829% |
16 | Kraken | CRV-USD | $1.095 0.0002795 Eth | $10,505,196.00 9,593,786.597 CRV | 1.0723% |
17 | Niza Global | CRV-USD | $1.091 0.0002785 Eth | $10,466,602.00 9,594,289.132 CRV | 1.0723% |
18 | Currency.com | CRV-USD | $1.11 0.0002840 Eth | $9,877,482.00 8,871,060.000 CRV | 0.9915% |
19 | KuCoin | CRV-USDT | $1.096 0.0002797 Eth | $9,478,311.00 8,647,670.580 CRV | 0.9665% |
20 | BYDFi | CRV-USDT | $1.11 0.0002834 Eth | $9,060,625.00 8,175,829.600 CRV | 0.9138% |
21 | Hotcoin | CRV-USDT | $1.094 0.0002793 Eth | $8,840,281.00 8,078,851.500 CRV | 0.9030% |
22 | Binance | CRV-USDC | $1.096 0.0002799 Eth | $7,620,510.00 6,877,103.100 CRV | 0.7686% |
23 | Binance | CRV-BTC | $1.095 0.0002794 Eth | $7,578,390.00 6,920,634.900 CRV | 0.7735% |
24 | Dex-Trade | CRV-USDT | $1.095 0.0002793 Eth | $6,102,841.00 5,575,649.342 CRV | 0.6232% |
25 | Biconomy.com | CRV-USDT | $1.096 0.0002799 Eth | $5,947,957.00 5,461,210.400 CRV | 0.6104% |
26 | Coinstore | CRV-USDT | $1.12 0.0002847 Eth | $5,924,574.00 5,450,938.100 CRV | 0.6092% |
27 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.11 0.0002825 Eth | $5,544,947.00 4,957,285.372 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.5541% |
28 | Trubit | CRV-USDT | $1.095 0.0002795 Eth | $5,258,117.00 4,850,915.600 CRV | 0.5422% |
29 | Bitvavo | CRV-EUR | $1.11 0.0002841 Eth | $5,115,795.00 4,602,674.617 CRV | 0.5144% |
30 | Toobit | CRV-USDT | $1.11 0.0002834 Eth | $4,511,235.00 4,156,967.800 CRV | 0.4646% |
31 | Binance | CRV-TRY | $1.096 0.0002797 Eth | $4,106,802.00 3,715,667.400 CRV | 0.4153% |
32 | BingX | CRV-USDT | $1.096 0.0002792 Eth | $3,814,301.00 3,499,566.908 CRV | 0.3911% |
33 | PointPay | CRV-USDT | $1.095 0.0002797 Eth | $3,788,258.00 3,492,861.062 CRV | 0.3904% |
34 | Phemex | CRV-USDT | $1.096 0.0002799 Eth | $3,690,097.00 3,366,099.120 CRV | 0.3762% |
35 | Ourbit | CRV-USDT | $1.10 0.0002817 Eth | $3,616,516.00 3,329,156.820 CRV | 0.3721% |
36 | Luno | CRV-MYR | $1.10 0.0002823 Eth | $3,347,881.00 3,032,475.980 CRV | 0.3389% |
37 | Bullish | CRV-USDC | $1.093 0.0002791 Eth | $3,274,852.00 2,987,303.601 CRV | 0.3339% |
38 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $1.10 0.0002823 Eth | $3,209,912.00 2,965,235.205 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3314% |
39 | Bitkub | CRV-THB | $1.096 0.0002799 Eth | $2,947,201.00 2,690,227.382 CRV | 0.3007% |
40 | FMCPAY | CRV-USDT | $1.11 0.0002828 Eth | $2,821,619.00 2,590,339.470 CRV | 0.2895% |
41 | Bithumb | CRV-KRW | $1.083 0.0002765 Eth | $2,727,901.00 2,517,888.269 CRV | 0.2814% |
42 | CoinEx | CRV-USDT | $1.10 0.0002819 Eth | $2,442,433.00 2,241,507.730 CRV | 0.2505% |
43 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.10 0.0002820 Eth | $2,436,219.00 622.604 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0001% |
44 | BitMart | CRV-USDT | $1.10 0.0002812 Eth | $2,281,563.00 2,070,794.220 CRV | 0.2314% |
45 | WhiteBIT | CRV-BTC | $1.11 0.0002827 Eth | $2,035,444.00 1,841,908.000 CRV | 0.2059% |
46 | Coinbase Exchange | CRV-EUR | $1.095 0.0002794 Eth | $2,003,660.00 1,830,331.580 CRV | 0.2046% |
47 | Icrypex | CRV-USDT | $1.11 0.0002835 Eth | $1,868,558.00 1,685,448.973 CRV | 0.1884% |
48 | WEEX | CRV-USDT | $1.095 0.0002797 Eth | $1,501,956.00 1,371,546.035 CRV | 0.1533% |
49 | LATOKEN | CRV-BTC | $1.094 0.0002791 Eth | $1,484,326.00 1,356,984.662 CRV | 0.1517% |
50 | Kraken | CRV-EUR | $1.092 0.0002787 Eth | $1,464,825.00 1,341,735.615 CRV | 0.1500% |
51 | Upbit | CRV-BTC | $1.11 0.0002833 Eth | $1,360,527.00 1,225,665.328 CRV | 0.1370% |
52 | OKX | CRV-USDC | $1.095 0.0002796 Eth | $1,288,460.00 1,179,000.122 CRV | 0.1318% |
53 | P2B | CRV-USD | $1.093 0.0002790 Eth | $1,210,546.00 1,107,544.750 CRV | 0.1238% |
54 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.10 0.0002818 Eth | $1,154,742.00 1,150,096.433 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1285% |
55 | WhiteBIT | CRV-TRY | $1.098 0.0002803 Eth | $930,412.00 847,170.000 CRV | 0.0947% |
56 | Bitso | CRV-USD | $1.11 0.0002828 Eth | $892,592.00 807,300.590 CRV | 0.0902% |
57 | BitDelta | CRV-USDT | $1.095 0.0002795 Eth | $865,648.00 792,501.300 CRV | 0.0886% |
58 | Gemini | CRV-USD | $1.092 0.0002788 Eth | $824,387.00 754,656.542 CRV | 0.0843% |
59 | Nonkyc.io | CRV-USDT | $1.099 0.0002807 Eth | $807,130.00 741,639.878 CRV | 0.0829% |
60 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.10 0.0002820 Eth | $591,562.00 590,796.178 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0660% |
61 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.11 0.0002838 Eth | $575,385.00 498,854.276 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0558% |
62 | BigONE | CRV-USDT | $1.093 0.0002791 Eth | $555,639.00 508,487.510 CRV | 0.0568% |
63 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.10 0.0002818 Eth | $518,447.00 473,069.852 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0529% |
64 | Bitazza | CRV-USDT | $1.11 0.0002837 Eth | $476,984.00 435,921.100 CRV | 0.0487% |
65 | Coinbase Exchange | CRV-GBP | $1.10 0.0002816 Eth | $411,420.00 372,326.600 CRV | 0.0416% |
66 | WEEX | CRV-USDC | $1.11 0.0002837 Eth | $407,494.00 373,600.000 CRV | 0.0418% |
67 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.11 0.0002820 Eth | $319,189.00 123,137.632 0X4200000000000000000000000000000000000042 | 0.0138% |
68 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.11 0.0002829 Eth | $297,477.00 268,750.478 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0300% |
69 | KickEX | CRV-USDT | $1.096 0.0002798 Eth | $238,429.00 217,489.817 CRV | 0.0243% |
70 | Coinbase Exchange | CRV-BTC | $1.093 0.0002789 Eth | $215,952.00 197,640.460 CRV | 0.0221% |
71 | LATOKEN | CRV-USDT | $1.11 0.0002838 Eth | $208,581.00 187,898.451 CRV | 0.0210% |
72 | Dex-Trade | CRV-BTC | $1.10 0.0002824 Eth | $201,806.00 182,645.330 CRV | 0.0204% |
73 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.10 0.0002823 Eth | $175,068.00 161,585.276 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0181% |
74 | Bitget | CRV-BTC | $1.097 0.0002799 Eth | $159,786.00 144,574.670 CRV | 0.0162% |
75 | Bitstamp | CRV-EUR | $1.13 0.0002876 Eth | $141,799.00 125,610.663 CRV | 0.0140% |
76 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.10 0.0002815 Eth | $111,158.00 100,393.756 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0112% |
77 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.11 0.0002824 Eth | $100,444.00 90,456.457 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0101% |
78 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.10 0.0002813 Eth | $94,085.00 84,528.620 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0094% |
79 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.10 0.0002816 Eth | $87,833.00 78,933.508 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0088% |
80 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.097 0.0002803 Eth | $67,677.00 61,403.405 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0069% |
81 | Globe | CRV-USDT | $1.094 0.0002795 Eth | $50,672.00 46,616.515 CRV | 0.0052% |
82 | Gate.io | CRV-ETH | $1.093 0.0002788 Eth | $40,046.00 36,215.250 CRV | 0.0040% |
83 | Coinone | CRV-KRW | $1.10 0.0002816 Eth | $39,272.00 35,599.406 CRV | 0.0040% |
84 | Nonkyc.io | CRV-BTC | $1.11 0.0002838 Eth | $35,262.00 32,404.712 CRV | 0.0036% |
85 | Foxbit | CRV-BRL | $1.10 0.0002816 Eth | $33,041.00 30,558.828 CRV | 0.0034% |
86 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.10 0.0002822 Eth | $30,803.00 28,154.257 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0031% |
87 | Gate.io | CRV-BTC | $1.097 0.0002799 Eth | $22,941.00 21,352.021 CRV | 0.0024% |
88 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.11 0.0002838 Eth | $16,931.20 15,338.738 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0017% |
89 | HashKey Global | CRV-USDT | $1.094 0.0002793 Eth | $16,457.45 15,113.300 CRV | 0.0017% |
90 | Luno | CRV-XBT | $1.10 0.0002815 Eth | $14,288.05 12,957.000 CRV | 0.0014% |
91 | DeFi Swap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.10 0.0002815 Eth | $11,170.86 10,079.309 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0011% |
92 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.10 0.0002815 Eth | $7,056.44 6,404.898 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0007% |
93 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $1.097 0.0002800 Eth | $6,556.93 6,018.055 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0007% |
94 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.11 0.0002821 Eth | $5,787.64 5,154.931 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0006% |
95 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.11 0.0002825 Eth | $4,699.36 4,278.278 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0005% |
96 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.11 0.0002825 Eth | $2,446.68 2,197.290 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0002% |
97 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.11 0.0002842 Eth | $959.54 865.698 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
98 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.11 0.0002831 Eth | $437.31 387.299 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0000% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.11 0.0002832 Eth | $323.13 294.783 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.11 0.0002851 Eth | $235.52 210.837 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
Contract Source Code Verified (Exact Match)
Contract Name:
Vyper_contract
Compiler Version
vyper:0.2.4
Contract Source Code (Vyper language format)
# @version 0.2.4 """ @title Curve DAO Token @author Curve Finance @license MIT @notice ERC20 with piecewise-linear mining supply. @dev Based on the ERC-20 token standard as defined at https://eips.ethereum.org/EIPS/eip-20 """ from vyper.interfaces import ERC20 implements: ERC20 event Transfer: _from: indexed(address) _to: indexed(address) _value: uint256 event Approval: _owner: indexed(address) _spender: indexed(address) _value: uint256 event UpdateMiningParameters: time: uint256 rate: uint256 supply: uint256 event SetMinter: minter: address event SetAdmin: admin: address name: public(String[64]) symbol: public(String[32]) decimals: public(uint256) balanceOf: public(HashMap[address, uint256]) allowances: HashMap[address, HashMap[address, uint256]] total_supply: uint256 minter: public(address) admin: public(address) # General constants YEAR: constant(uint256) = 86400 * 365 # Allocation: # ========= # * shareholders - 30% # * emplyees - 3% # * DAO-controlled reserve - 5% # * Early users - 5% # == 43% == # left for inflation: 57% # Supply parameters INITIAL_SUPPLY: constant(uint256) = 1_303_030_303 INITIAL_RATE: constant(uint256) = 274_815_283 * 10 ** 18 / YEAR # leading to 43% premine RATE_REDUCTION_TIME: constant(uint256) = YEAR RATE_REDUCTION_COEFFICIENT: constant(uint256) = 1189207115002721024 # 2 ** (1/4) * 1e18 RATE_DENOMINATOR: constant(uint256) = 10 ** 18 INFLATION_DELAY: constant(uint256) = 86400 # Supply variables mining_epoch: public(int128) start_epoch_time: public(uint256) rate: public(uint256) start_epoch_supply: uint256 @external def __init__(_name: String[64], _symbol: String[32], _decimals: uint256): """ @notice Contract constructor @param _name Token full name @param _symbol Token symbol @param _decimals Number of decimals for token """ init_supply: uint256 = INITIAL_SUPPLY * 10 ** _decimals self.name = _name self.symbol = _symbol self.decimals = _decimals self.balanceOf[msg.sender] = init_supply self.total_supply = init_supply self.admin = msg.sender log Transfer(ZERO_ADDRESS, msg.sender, init_supply) self.start_epoch_time = block.timestamp + INFLATION_DELAY - RATE_REDUCTION_TIME self.mining_epoch = -1 self.rate = 0 self.start_epoch_supply = init_supply @internal def _update_mining_parameters(): """ @dev Update mining rate and supply at the start of the epoch Any modifying mining call must also call this """ _rate: uint256 = self.rate _start_epoch_supply: uint256 = self.start_epoch_supply self.start_epoch_time += RATE_REDUCTION_TIME self.mining_epoch += 1 if _rate == 0: _rate = INITIAL_RATE else: _start_epoch_supply += _rate * RATE_REDUCTION_TIME self.start_epoch_supply = _start_epoch_supply _rate = _rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT self.rate = _rate log UpdateMiningParameters(block.timestamp, _rate, _start_epoch_supply) @external def update_mining_parameters(): """ @notice Update mining rate and supply at the start of the epoch @dev Callable by any address, but only once per epoch Total supply becomes slightly larger if this function is called late """ assert block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME # dev: too soon! self._update_mining_parameters() @external def start_epoch_time_write() -> uint256: """ @notice Get timestamp of the current mining epoch start while simultaneously updating mining parameters @return Timestamp of the epoch """ _start_epoch_time: uint256 = self.start_epoch_time if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() return self.start_epoch_time else: return _start_epoch_time @external def future_epoch_time_write() -> uint256: """ @notice Get timestamp of the next mining epoch start while simultaneously updating mining parameters @return Timestamp of the next epoch """ _start_epoch_time: uint256 = self.start_epoch_time if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() return self.start_epoch_time + RATE_REDUCTION_TIME else: return _start_epoch_time + RATE_REDUCTION_TIME @internal @view def _available_supply() -> uint256: return self.start_epoch_supply + (block.timestamp - self.start_epoch_time) * self.rate @external @view def available_supply() -> uint256: """ @notice Current number of tokens in existence (claimed or unclaimed) """ return self._available_supply() @external @view def mintable_in_timeframe(start: uint256, end: uint256) -> uint256: """ @notice How much supply is mintable from start timestamp till end timestamp @param start Start of the time interval (timestamp) @param end End of the time interval (timestamp) @return Tokens mintable from `start` till `end` """ assert start <= end # dev: start > end to_mint: uint256 = 0 current_epoch_time: uint256 = self.start_epoch_time current_rate: uint256 = self.rate # Special case if end is in future (not yet minted) epoch if end > current_epoch_time + RATE_REDUCTION_TIME: current_epoch_time += RATE_REDUCTION_TIME current_rate = current_rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT assert end <= current_epoch_time + RATE_REDUCTION_TIME # dev: too far in future for i in range(999): # Curve will not work in 1000 years. Darn! if end >= current_epoch_time: current_end: uint256 = end if current_end > current_epoch_time + RATE_REDUCTION_TIME: current_end = current_epoch_time + RATE_REDUCTION_TIME current_start: uint256 = start if current_start >= current_epoch_time + RATE_REDUCTION_TIME: break # We should never get here but what if... elif current_start < current_epoch_time: current_start = current_epoch_time to_mint += current_rate * (current_end - current_start) if start >= current_epoch_time: break current_epoch_time -= RATE_REDUCTION_TIME current_rate = current_rate * RATE_REDUCTION_COEFFICIENT / RATE_DENOMINATOR # double-division with rounding made rate a bit less => good assert current_rate <= INITIAL_RATE # This should never happen return to_mint @external def set_minter(_minter: address): """ @notice Set the minter address @dev Only callable once, when minter has not yet been set @param _minter Address of the minter """ assert msg.sender == self.admin # dev: admin only assert self.minter == ZERO_ADDRESS # dev: can set the minter only once, at creation self.minter = _minter log SetMinter(_minter) @external def set_admin(_admin: address): """ @notice Set the new admin. @dev After all is set up, admin only can change the token name @param _admin New admin address """ assert msg.sender == self.admin # dev: admin only self.admin = _admin log SetAdmin(_admin) @external @view def totalSupply() -> uint256: """ @notice Total number of tokens in existence. """ return self.total_supply @external @view def allowance(_owner : address, _spender : address) -> uint256: """ @notice Check the amount of tokens that an owner allowed to a spender @param _owner The address which owns the funds @param _spender The address which will spend the funds @return uint256 specifying the amount of tokens still available for the spender """ return self.allowances[_owner][_spender] @external def transfer(_to : address, _value : uint256) -> bool: """ @notice Transfer `_value` tokens from `msg.sender` to `_to` @dev Vyper does not allow underflows, so the subtraction in this function will revert on an insufficient balance @param _to The address to transfer to @param _value The amount to be transferred @return bool success """ assert _to != ZERO_ADDRESS # dev: transfers to 0x0 are not allowed self.balanceOf[msg.sender] -= _value self.balanceOf[_to] += _value log Transfer(msg.sender, _to, _value) return True @external def transferFrom(_from : address, _to : address, _value : uint256) -> bool: """ @notice Transfer `_value` tokens from `_from` to `_to` @param _from address The address which you want to send tokens from @param _to address The address which you want to transfer to @param _value uint256 the amount of tokens to be transferred @return bool success """ assert _to != ZERO_ADDRESS # dev: transfers to 0x0 are not allowed # NOTE: vyper does not allow underflows # so the following subtraction would revert on insufficient balance self.balanceOf[_from] -= _value self.balanceOf[_to] += _value self.allowances[_from][msg.sender] -= _value log Transfer(_from, _to, _value) return True @external def approve(_spender : address, _value : uint256) -> bool: """ @notice Approve `_spender` to transfer `_value` tokens on behalf of `msg.sender` @dev Approval may only be from zero -> nonzero or from nonzero -> zero in order to mitigate the potential race condition described here: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 @param _spender The address which will spend the funds @param _value The amount of tokens to be spent @return bool success """ assert _value == 0 or self.allowances[msg.sender][_spender] == 0 self.allowances[msg.sender][_spender] = _value log Approval(msg.sender, _spender, _value) return True @external def mint(_to: address, _value: uint256) -> bool: """ @notice Mint `_value` tokens and assign them to `_to` @dev Emits a Transfer event originating from 0x00 @param _to The account that will receive the created tokens @param _value The amount that will be created @return bool success """ assert msg.sender == self.minter # dev: minter only assert _to != ZERO_ADDRESS # dev: zero address if block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME: self._update_mining_parameters() _total_supply: uint256 = self.total_supply + _value assert _total_supply <= self._available_supply() # dev: exceeds allowable mint amount self.total_supply = _total_supply self.balanceOf[_to] += _value log Transfer(ZERO_ADDRESS, _to, _value) return True @external def burn(_value: uint256) -> bool: """ @notice Burn `_value` tokens belonging to `msg.sender` @dev Emits a Transfer event with a destination of 0x00 @param _value The amount that will be burned @return bool success """ self.balanceOf[msg.sender] -= _value self.total_supply -= _value log Transfer(msg.sender, ZERO_ADDRESS, _value) return True @external def set_name(_name: String[64], _symbol: String[32]): """ @notice Change the token name and symbol to `_name` and `_symbol` @dev Only callable by the admin account @param _name New token name @param _symbol New token symbol """ assert msg.sender == self.admin, "Only admin is allowed to change name" self.name = _name self.symbol = _symbol
Contract Security Audit
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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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