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Overview
Max Total Supply
2,200,127,868.783927235597514256 CRV
Holders
88,499 ( -0.176%)
Market
Price
$1.11 @ 0.000292 ETH (-0.90%)
Onchain Market Cap
$2,451,084,472.52
Circulating Supply Market Cap
$1,388,334,516.57
Other Info
Token Contract (WITH 18 Decimals)
Balance
933.92503260428383886 CRVValue
$1,040.45 ( ~0.272694666678536 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.14 0.0002981 Eth | $226,756,391.00 209,422,989.900 CRV | 25.4480% |
2 | Websea | CRV-USDT | $1.11 0.0002916 Eth | $118,421,955.00 0.000 CRV | 0.0000% |
3 | WhiteBIT | CRV-USDT | $1.13 0.0002956 Eth | $96,083,760.00 85,060,689.308 CRV | 10.3361% |
4 | OKX | CRV-USDT | $1.14 0.0002975 Eth | $69,785,434.00 64,290,751.918 CRV | 7.8123% |
5 | MEXC | CRV-USDT | $1.099 0.0002887 Eth | $53,777,409.00 48,918,649.795 CRV | 5.9443% |
6 | Bitget | CRV-USDT | $1.14 0.0002985 Eth | $40,835,597.00 36,985,200.113 CRV | 4.4942% |
7 | Coinbase Exchange | CRV-USD | $1.14 0.0002977 Eth | $37,385,016.00 32,816,902.840 CRV | 3.9877% |
8 | Bybit | CRV-USDT | $1.14 0.0002980 Eth | $37,341,881.00 34,229,467.740 CRV | 4.1594% |
9 | Bitunix | CRV-USDT | $1.13 0.0002956 Eth | $36,108,139.00 32,033,073.600 CRV | 3.8925% |
10 | HTX | CRV-USDT | $1.14 0.0002985 Eth | $34,606,152.00 31,810,227.553 CRV | 3.8654% |
11 | Slex | CRV-USDT | $1.14 0.0002973 Eth | $20,784,751.00 19,090,902.100 CRV | 2.3198% |
12 | XT.COM | CRV-USDT | $1.11 0.0002920 Eth | $18,185,077.00 16,795,280.800 CRV | 2.0409% |
13 | BTSE | CRV-USDT | $1.14 0.0002976 Eth | $17,316,330.00 15,211,300.278 CRV | 1.8484% |
14 | LBank | CRV-USDT | $1.14 0.0002971 Eth | $15,584,853.00 13,714,067.580 CRV | 1.6665% |
15 | DigiFinex | CRV-USDT | $1.14 0.0002978 Eth | $13,101,186.00 11,506,273.800 CRV | 1.3982% |
16 | Kraken | CRV-USD | $1.14 0.0002978 Eth | $10,577,809.00 9,286,926.617 CRV | 1.1285% |
17 | Niza Global | CRV-USD | $1.13 0.0002959 Eth | $10,131,321.00 9,314,958.464 CRV | 1.1319% |
18 | KuCoin | CRV-USDT | $1.14 0.0002971 Eth | $9,666,567.00 8,510,714.877 CRV | 1.0342% |
19 | Currency.com | CRV-USD | $1.10 0.0002902 Eth | $9,569,700.00 8,668,992.000 CRV | 1.0534% |
20 | Hotcoin | CRV-USDT | $1.13 0.0002956 Eth | $9,413,602.00 8,327,507.400 CRV | 1.0119% |
21 | BYDFi | CRV-USDT | $1.11 0.0002934 Eth | $9,070,254.00 8,145,901.700 CRV | 0.9898% |
22 | FameEX | CRV-USDT | $1.13 0.0002961 Eth | $9,036,467.00 8,349,802.207 CRV | 1.0146% |
23 | Binance | CRV-BTC | $1.14 0.0002973 Eth | $6,746,841.00 6,359,686.700 CRV | 0.7728% |
24 | Dex-Trade | CRV-USDT | $1.11 0.0002900 Eth | $6,138,353.00 5,554,252.642 CRV | 0.6749% |
25 | Biconomy.com | CRV-USDT | $1.13 0.0002961 Eth | $5,929,508.00 5,458,256.800 CRV | 0.6633% |
26 | Coinstore | CRV-USDT | $1.12 0.0002936 Eth | $5,861,210.00 5,402,748.500 CRV | 0.6565% |
27 | Binance | CRV-USDC | $1.14 0.0002973 Eth | $5,291,792.00 4,833,832.600 CRV | 0.5874% |
28 | Trubit | CRV-USDT | $1.13 0.0002962 Eth | $5,097,200.00 4,717,730.000 CRV | 0.5733% |
29 | Bitvavo | CRV-EUR | $1.13 0.0002962 Eth | $4,753,618.00 4,200,432.855 CRV | 0.5104% |
30 | Toobit | CRV-USDT | $1.11 0.0002907 Eth | $4,473,263.00 4,132,078.000 CRV | 0.5021% |
31 | Hibt | CRV-USDT | $1.13 0.0002962 Eth | $4,180,883.00 3,851,772.343 CRV | 0.4680% |
32 | Binance | CRV-TRY | $1.11 0.0002905 Eth | $4,076,708.00 3,694,430.200 CRV | 0.4489% |
33 | BingX | CRV-USDT | $1.14 0.0002982 Eth | $3,856,831.00 3,547,606.951 CRV | 0.4311% |
34 | Phemex | CRV-USDT | $1.11 0.0002903 Eth | $3,717,310.00 3,363,854.850 CRV | 0.4088% |
35 | PointPay | CRV-USDT | $1.14 0.0002988 Eth | $3,711,065.00 3,427,967.067 CRV | 0.4165% |
36 | Ourbit | CRV-USDT | $1.13 0.0002963 Eth | $3,616,356.00 3,332,596.010 CRV | 0.4050% |
37 | Curve (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $1.13 0.0002941 Eth | $3,528,837.00 3,280,311.172 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3986% |
38 | Luno | CRV-MYR | $1.13 0.0002948 Eth | $3,382,226.00 3,000,962.860 CRV | 0.3647% |
39 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.12 0.0002920 Eth | $3,185,568.00 2,987,450.745 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.3630% |
40 | Bullish | CRV-USDC | $1.14 0.0002979 Eth | $3,163,669.00 2,894,926.568 CRV | 0.3518% |
41 | Bithumb | CRV-KRW | $1.13 0.0002955 Eth | $2,853,073.00 2,523,655.576 CRV | 0.3067% |
42 | FMCPAY | CRV-USDT | $1.13 0.0002957 Eth | $2,851,255.00 2,624,355.470 CRV | 0.3189% |
43 | Bitkub | CRV-THB | $1.11 0.0002912 Eth | $2,800,725.00 2,531,867.729 CRV | 0.3077% |
44 | CoinEx | CRV-USDT | $1.13 0.0002963 Eth | $2,408,440.00 2,214,391.941 CRV | 0.2691% |
45 | BitMart | CRV-USDT | $1.14 0.0002972 Eth | $2,371,474.00 2,085,428.980 CRV | 0.2534% |
46 | Coinbase Exchange | CRV-EUR | $1.14 0.0002970 Eth | $2,193,986.00 1,930,542.110 CRV | 0.2346% |
47 | WhiteBIT | CRV-BTC | $1.099 0.0002889 Eth | $1,892,728.00 1,722,444.700 CRV | 0.2093% |
48 | Icrypex | CRV-USDT | $1.11 0.0002912 Eth | $1,784,533.00 1,608,192.091 CRV | 0.1954% |
49 | OKX | CRV-USDC | $1.14 0.0002972 Eth | $1,558,664.00 1,425,674.176 CRV | 0.1732% |
50 | WEEX | CRV-USDT | $1.11 0.0002915 Eth | $1,501,252.00 1,355,205.987 CRV | 0.1647% |
51 | Kraken | CRV-EUR | $1.14 0.0002972 Eth | $1,398,591.00 1,230,268.272 CRV | 0.1495% |
52 | Upbit | CRV-BTC | $1.14 0.0002973 Eth | $1,328,506.00 1,168,886.271 CRV | 0.1420% |
53 | LATOKEN | CRV-BTC | $1.13 0.0002952 Eth | $1,312,179.00 1,161,925.257 CRV | 0.1412% |
54 | Curve (Ethereum) | 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.10 0.0002882 Eth | $1,199,354.00 1,193,258.385 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E | 0.1450% |
55 | P2B | CRV-USD | $1.12 0.0002916 Eth | $1,193,525.00 1,070,426.120 CRV | 0.1301% |
56 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.10 0.0002882 Eth | $1,043,991.00 150,158.090 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0182% |
57 | Pionex | CRV-USDT | $1.13 0.0002959 Eth | $1,030,863.00 944,462.269 CRV | 0.1148% |
58 | WhiteBIT | CRV-TRY | $1.14 0.0002976 Eth | $952,027.00 837,033.600 CRV | 0.1017% |
59 | Nonkyc.io | CRV-USDT | $1.13 0.0002965 Eth | $889,143.00 816,388.632 CRV | 0.0992% |
60 | Gemini | CRV-USD | $1.14 0.0002972 Eth | $880,829.00 774,559.389 CRV | 0.0941% |
61 | Bitso | CRV-USD | $1.099 0.0002892 Eth | $879,815.00 800,516.118 CRV | 0.0973% |
62 | BitDelta | CRV-USDT | $1.13 0.0002962 Eth | $850,034.00 780,834.100 CRV | 0.0949% |
63 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.10 0.0002889 Eth | $759,396.00 711,982.436 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0865% |
64 | BigONE | CRV-USDT | $1.10 0.0002894 Eth | $575,939.00 523,377.355 CRV | 0.0636% |
65 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.11 0.0002906 Eth | $503,045.00 437,228.831 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0531% |
66 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.11 0.0002891 Eth | $494,489.00 475,125.836 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0577% |
67 | Bitazza | CRV-USDT | $1.11 0.0002911 Eth | $468,768.00 429,546.900 CRV | 0.0522% |
68 | WEEX | CRV-USDC | $1.12 0.0002938 Eth | $406,170.00 373,147.000 CRV | 0.0453% |
69 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.11 0.0002912 Eth | $327,476.00 310,897.827 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0378% |
70 | Coinbase Exchange | CRV-GBP | $1.14 0.0002980 Eth | $313,919.00 275,268.420 CRV | 0.0334% |
71 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $1.077 0.0002824 Eth | $305,967.00 121,178.162 0X4200000000000000000000000000000000000042 | 0.0147% |
72 | KickEX | CRV-USDT | $1.13 0.0002961 Eth | $246,958.00 218,098.745 CRV | 0.0265% |
73 | Coinbase Exchange | CRV-BTC | $1.14 0.0002973 Eth | $211,027.00 185,480.470 CRV | 0.0225% |
74 | LATOKEN | CRV-USDT | $1.14 0.0002972 Eth | $205,701.00 180,915.640 CRV | 0.0220% |
75 | Bitget | CRV-BTC | $1.14 0.0002986 Eth | $194,718.00 179,329.912 CRV | 0.0218% |
76 | Dex-Trade | CRV-BTC | $1.10 0.0002897 Eth | $186,827.00 169,083.330 CRV | 0.0205% |
77 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.089 0.0002864 Eth | $174,866.00 162,527.506 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0197% |
78 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.10 0.0002882 Eth | $107,996.00 101,595.282 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0123% |
79 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.10 0.0002883 Eth | $101,727.00 95,149.382 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0116% |
80 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.10 0.0002883 Eth | $92,175.00 86,512.537 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0105% |
81 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.11 0.0002891 Eth | $68,056.00 64,731.601 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0079% |
82 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.13 0.0002944 Eth | $66,414.00 61,617.823 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0075% |
83 | Globe | CRV-USDT | $1.13 0.0002970 Eth | $60,183.00 55,267.476 CRV | 0.0067% |
84 | Coinone | CRV-KRW | $1.10 0.0002886 Eth | $38,481.00 34,843.036 CRV | 0.0042% |
85 | Gate.io | CRV-ETH | $1.14 0.0002981 Eth | $37,449.00 34,868.040 CRV | 0.0042% |
86 | Nonkyc.io | CRV-BTC | $1.13 0.0002942 Eth | $35,382.00 33,390.652 CRV | 0.0041% |
87 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $1.12 0.0002932 Eth | $32,085.00 30,248.299 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0037% |
88 | Foxbit | CRV-BRL | $1.12 0.0002931 Eth | $31,732.00 29,503.083 CRV | 0.0036% |
89 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.11 0.0002904 Eth | $16,094.96 15,334.291 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0019% |
90 | Luno | CRV-XBT | $1.14 0.0002991 Eth | $15,116.10 13,261.900 CRV | 0.0016% |
91 | DeFi Swap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.084 0.0002837 Eth | $10,544.85 9,809.405 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0012% |
92 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.093 0.0002856 Eth | $7,530.54 6,944.417 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0008% |
93 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $1.12 0.0002947 Eth | $5,695.56 5,252.327 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0006% |
94 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.11 0.0002909 Eth | $5,680.17 5,259.160 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0006% |
95 | Balancer V2 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $1.036 0.0002709 Eth | $4,987.16 6,026.310 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0007% |
96 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.12 0.0002928 Eth | $4,887.98 4,490.413 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0005% |
97 | DeFi Swap | 0XA0B73E1FF0B80914AB6FE0444E65848C4C34450B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.10 0.0002883 Eth | $3,233.79 15,325.787 0XA0B73E1FF0B80914AB6FE0444E65848C4C34450B | 0.0019% |
98 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.12 0.0002916 Eth | $946.90 881.072 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.10 0.0002901 Eth | $289.75 272.152 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.10 0.0002899 Eth | $213.62 198.631 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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