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Overview
Max Total Supply
2,206,930,158.171604907543418311 CRV
Holders
88,886 ( -0.025%)
Market
Price
$0.84 @ 0.000255 ETH (+8.00%)
Onchain Market Cap
$1,851,161,468.92
Circulating Supply Market Cap
$1,053,452,296.62
Other Info
Token Contract (WITH 18 Decimals)
Balance
4,521.075157382547430661 CRVValue
$3,792.25 ( ~1.1535 Eth) [0.0002%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $0.849 0.0002579 Eth | $106,532,879.00 126,977,436.700 CRV | 23.6085% |
2 | Websea | CRV-USDT | $0.849 0.0002584 Eth | $56,843,420.00 0.000 CRV | 0.0000% |
3 | WhiteBIT | CRV-USDT | $0.8471 0.0002573 Eth | $56,245,982.00 66,395,422.284 CRV | 12.3447% |
4 | OKX | CRV-USDT | $0.8464 0.0002574 Eth | $28,923,715.00 34,578,575.907 CRV | 6.4291% |
5 | Gate.io | CRV-USDT | $0.8463 0.0002574 Eth | $23,536,015.00 28,127,611.140 CRV | 5.2297% |
6 | Coinbase Exchange | CRV-USD | $0.8499 0.0002588 Eth | $21,735,835.00 25,574,579.790 CRV | 4.7550% |
7 | HTX | CRV-USDT | $0.8465 0.0002574 Eth | $16,257,661.00 19,511,308.820 CRV | 3.6277% |
8 | Bitget | CRV-USDT | $0.8468 0.0002572 Eth | $14,920,455.00 17,829,584.951 CRV | 3.3150% |
9 | Bybit | CRV-USDT | $0.8461 0.0002570 Eth | $13,133,277.00 15,682,359.010 CRV | 2.9158% |
10 | MEXC | CRV-USDT | $0.8471 0.0002576 Eth | $11,431,003.00 13,494,733.892 CRV | 2.5090% |
11 | Azbit | CRV-USDT | $0.8377 0.0002552 Eth | $10,272,712.00 12,254,135.160 CRV | 2.2784% |
12 | BIT | CRV-USDT | $0.8465 0.0002571 Eth | $9,367,767.00 11,065,970.522 CRV | 2.0575% |
13 | Bitunix | CRV-USDT | $0.8407 0.0002556 Eth | $9,305,719.00 11,068,727.400 CRV | 2.0580% |
14 | XT.COM | CRV-USDT | $0.8378 0.0002541 Eth | $8,427,329.00 10,059,221.400 CRV | 1.8703% |
15 | Slex | CRV-USDT | $0.8507 0.0002586 Eth | $6,609,381.00 7,883,569.300 CRV | 1.4658% |
16 | Kraken | CRV-USD | $0.839 0.0002549 Eth | $6,582,036.00 7,845,097.100 CRV | 1.4586% |
17 | Niza Global | CRV-USD | $0.849 0.0002582 Eth | $6,544,844.00 7,848,005.747 CRV | 1.4592% |
18 | DigiFinex | CRV-USDT | $0.846 0.0002574 Eth | $5,945,514.00 7,027,595.500 CRV | 1.3066% |
19 | LBank | CRV-USDT | $0.8439 0.0002569 Eth | $4,553,876.00 5,396,214.630 CRV | 1.0033% |
20 | Trubit | CRV-USDT | $0.8503 0.0002584 Eth | $4,399,869.00 5,313,163.000 CRV | 0.9879% |
21 | FameEX | CRV-USDT | $0.8472 0.0002574 Eth | $4,251,398.00 5,077,689.801 CRV | 0.9441% |
22 | Bitrue | CRV-USDT | $0.8465 0.0002574 Eth | $4,211,450.00 4,975,289.380 CRV | 0.9250% |
23 | BYDFi | CRV-USDT | $0.8382 0.0002544 Eth | $4,148,413.00 4,949,409.500 CRV | 0.9202% |
24 | Hotcoin | CRV-USDT | $0.8472 0.0002575 Eth | $3,786,971.00 4,469,993.400 CRV | 0.8311% |
25 | KuCoin | CRV-USDT | $0.8472 0.0002573 Eth | $3,754,040.00 4,431,334.849 CRV | 0.8239% |
26 | Phemex | CRV-USDT | $0.84 0.0002546 Eth | $3,715,368.00 4,423,142.490 CRV | 0.8224% |
27 | Dex-Trade | CRV-USDT | $0.8503 0.0002584 Eth | $3,663,796.00 4,308,685.900 CRV | 0.8011% |
28 | CoinW | CRV-USDT | $0.8428 0.0002566 Eth | $3,478,587.00 4,127,366.207 CRV | 0.7674% |
29 | Bitrue | CRV-XRP | $0.8439 0.0002569 Eth | $3,384,629.00 4,010,818.790 CRV | 0.7457% |
30 | BTSE | CRV-USDT | $0.8467 0.0002572 Eth | $3,015,614.00 3,561,648.689 CRV | 0.6622% |
31 | Biconomy.com | CRV-USDT | $0.8422 0.0002566 Eth | $2,997,248.00 3,581,083.400 CRV | 0.6658% |
32 | Coinstore | CRV-USDT | $0.8491 0.0002585 Eth | $2,897,639.00 3,459,585.800 CRV | 0.6432% |
33 | FMFW.io | CRV-USDT | $0.8432 0.0002567 Eth | $2,556,041.00 3,031,413.000 CRV | 0.5636% |
34 | HitBTC | CRV-USDT | $0.8414 0.0002559 Eth | $2,529,338.00 3,031,413.000 CRV | 0.5636% |
35 | Binance | CRV-TRY | $0.843 0.0002555 Eth | $2,527,278.00 2,957,673.100 CRV | 0.5499% |
36 | Bullish | CRV-USDC | $0.8476 0.0002580 Eth | $2,386,662.00 2,874,392.227 CRV | 0.5344% |
37 | FMCPAY | CRV-USDT | $0.8458 0.0002575 Eth | $2,125,527.00 2,544,376.050 CRV | 0.4731% |
38 | Toobit | CRV-USDT | $0.8461 0.0002576 Eth | $2,112,113.00 2,519,690.000 CRV | 0.4685% |
39 | Ourbit | CRV-USDT | $0.8426 0.0002565 Eth | $1,814,848.00 2,166,290.960 CRV | 0.4028% |
40 | PointPay | CRV-USDT | $0.8417 0.0002565 Eth | $1,744,696.00 2,078,512.203 CRV | 0.3865% |
41 | WhiteBIT | CRV-BTC | $0.8377 0.0002546 Eth | $1,739,364.00 2,076,339.900 CRV | 0.3860% |
42 | Hibt | CRV-USDT | $0.844 0.0002570 Eth | $1,731,189.00 2,065,564.434 CRV | 0.3840% |
43 | Binance | CRV-USDC | $0.8387 0.0002550 Eth | $1,587,619.00 1,899,297.700 CRV | 0.3531% |
44 | WEEX | CRV-USDT | $0.839 0.0002550 Eth | $1,504,650.00 1,793,354.765 CRV | 0.3334% |
45 | BingX | CRV-USDT | $0.8464 0.0002571 Eth | $1,503,387.00 1,793,954.990 CRV | 0.3335% |
46 | Bitkub | CRV-THB | $0.8441 0.0002558 Eth | $1,402,481.00 1,661,525.230 CRV | 0.3089% |
47 | Luno | CRV-MYR | $0.8552 0.0002601 Eth | $1,371,502.00 1,603,657.740 CRV | 0.2982% |
48 | BitMart | CRV-USDT | $0.8481 0.0002578 Eth | $1,192,297.00 1,405,856.900 CRV | 0.2614% |
49 | Binance | CRV-BTC | $0.8483 0.0002581 Eth | $1,069,613.00 1,307,740.600 CRV | 0.2431% |
50 | Bitvavo | CRV-EUR | $0.847 0.0002574 Eth | $1,031,908.00 1,218,284.084 CRV | 0.2265% |
51 | CoinEx | CRV-USDT | $0.8485 0.0002579 Eth | $994,392.00 1,186,197.010 CRV | 0.2205% |
52 | WhiteBIT | CRV-TRY | $0.851 0.0002586 Eth | $905,214.00 1,063,664.600 CRV | 0.1978% |
53 | P2B | CRV-USD | $0.848 0.0002579 Eth | $857,282.00 1,010,945.970 CRV | 0.1880% |
54 | LocalTrade | CRV-USDT | $0.8449 0.0002571 Eth | $728,040.00 861,658.596 CRV | 0.1602% |
55 | BitDelta | CRV-USDT | $0.8388 0.0002543 Eth | $594,830.00 714,460.000 CRV | 0.1328% |
56 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.836 0.0002542 Eth | $567,339.00 682,292.781 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1269% |
57 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.8388 0.0002549 Eth | $552,035.00 550,248.384 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.1023% |
58 | Niza Global | CRV-EUR | $0.8418 0.0002558 Eth | $544,089.00 647,746.053 CRV | 0.1204% |
59 | Kraken | CRV-EUR | $0.8418 0.0002561 Eth | $543,552.00 645,717.252 CRV | 0.1201% |
60 | Bit2Me | CRV-EUR | $0.8419 0.0002564 Eth | $515,777.00 635,371.884 CRV | 0.1181% |
61 | Coinbase Exchange | CRV-EUR | $0.8479 0.0002577 Eth | $415,727.00 490,276.940 CRV | 0.0912% |
62 | OKX | CRV-USDC | $0.8473 0.0002577 Eth | $415,565.00 497,507.393 CRV | 0.0925% |
63 | Gemini | CRV-USD | $0.8465 0.0002571 Eth | $381,245.00 450,378.362 CRV | 0.0837% |
64 | Bitazza | CRV-USDT | $0.8502 0.0002588 Eth | $369,704.00 443,980.500 CRV | 0.0825% |
65 | BloFin | CRV-USDT | $0.8463 0.0002577 Eth | $320,231.00 383,394.300 CRV | 0.0713% |
66 | Tokenize | CRV-USD | $0.8474 0.0002579 Eth | $299,261.00 353,152.213 CRV | 0.0657% |
67 | Tokenize | CRV-SGD | $0.8471 0.0002578 Eth | $298,837.00 352,765.863 CRV | 0.0656% |
68 | Pionex | CRV-USDT | $0.8489 0.0002584 Eth | $295,531.00 351,546.111 CRV | 0.0654% |
69 | Nonkyc.io | CRV-USDT | $0.8416 0.0002562 Eth | $285,200.00 342,654.980 CRV | 0.0637% |
70 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.8394 0.0002554 Eth | $258,082.00 341,211.981 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0634% |
71 | BVOX | CRV-USDT | $0.8467 0.0002578 Eth | $253,800.00 303,561.800 CRV | 0.0564% |
72 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.8414 0.0002557 Eth | $227,849.00 270,121.876 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0502% |
73 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.8333 0.0002533 Eth | $227,468.00 279,589.888 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0520% |
74 | Coinbase Exchange | CRV-GBP | $0.8478 0.0002577 Eth | $203,990.00 240,613.670 CRV | 0.0447% |
75 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.8438 0.0002564 Eth | $186,867.00 226,253.709 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0421% |
76 | Bitso | CRV-USD | $0.8491 0.0002581 Eth | $158,300.00 186,430.335 CRV | 0.0347% |
77 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.837 0.0002548 Eth | $141,371.00 171,191.669 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0318% |
78 | Deepcoin | CRV-USDT | $0.8367 0.0002548 Eth | $140,268.00 173,527.553 CRV | 0.0323% |
79 | BigONE | CRV-USDT | $0.8428 0.0002561 Eth | $128,067.00 151,954.756 CRV | 0.0283% |
80 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.8345 0.0002536 Eth | $110,182.00 27,122.550 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0050% |
81 | LATOKEN | CRV-USDT | $0.8504 0.0002585 Eth | $104,790.00 123,220.787 CRV | 0.0229% |
82 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.8443 0.0002566 Eth | $71,574.00 86,450.797 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0161% |
83 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.8392 0.0002551 Eth | $43,621.00 52,158.344 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0097% |
84 | Globe | CRV-USDT | $0.8446 0.0002572 Eth | $31,500.00 37,762.185 CRV | 0.0070% |
85 | TokoCrypto | CRV-USDT | $0.8387 0.0002550 Eth | $27,513.00 32,803.367 CRV | 0.0061% |
86 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.8418 0.0002563 Eth | $26,701.00 32,117.073 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0060% |
87 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $0.8436 0.0002564 Eth | $21,733.00 26,204.586 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0049% |
88 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.84 0.0002553 Eth | $18,351.86 22,121.394 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0041% |
89 | HashKey Global | CRV-USDT | $0.8366 0.0002547 Eth | $15,634.62 18,844.400 CRV | 0.0035% |
90 | LATOKEN | CRV-BTC | $0.8394 0.0002547 Eth | $8,989.82 10,710.186 CRV | 0.0020% |
91 | CEX.IO | CRV-USDT | $0.8437 0.0002569 Eth | $8,966.58 10,862.506 CRV | 0.0020% |
92 | Gate.io | CRV-ETH | $0.8462 0.0002574 Eth | $4,116.44 4,918.260 CRV | 0.0009% |
93 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.8351 0.0002538 Eth | $3,196.59 3,891.420 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0007% |
94 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $0.8357 0.0002532 Eth | $3,104.31 3,663.054 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0007% |
95 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $0.849 0.0002580 Eth | $1,725.22 1,970.491 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0004% |
96 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.8432 0.0002565 Eth | $1,327.92 1,592.010 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0003% |
97 | Balancer V2 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.8377 0.0002551 Eth | $1,323.83 1,608.353 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0003% |
98 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.8416 0.0002561 Eth | $706.11 851.003 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0002% |
99 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $0.855 0.0002592 Eth | $263.08 318.473 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0001% |
100 | Swapr (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.8466 0.0002573 Eth | $117.82 141.465 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 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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