Overview
Max Total Supply
2,213,032,608.505343432500352318 CRV
Holders
88,926 ( 0.016%)
Market
Price
$0.84 @ 0.000253 ETH (-4.22%)
Onchain Market Cap
$1,868,151,482.93
Circulating Supply Market Cap
$1,067,459,785.81
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $0.8423 0.0002526 Eth | $55,669,861.00 65,482,479.400 CRV | 23.4934% |
2 | Websea | CRV-USDT | $0.8434 0.0002530 Eth | $19,873,024.00 0.000 CRV | 0.0000% |
3 | Coinbase Exchange | CRV-USD | $0.8432 0.0002529 Eth | $17,877,675.00 21,202,176.440 CRV | 7.6068% |
4 | Gate.io | CRV-USDT | $0.8426 0.0002527 Eth | $13,943,464.00 16,390,731.780 CRV | 5.8806% |
5 | HTX | CRV-USDT | $0.8427 0.0002527 Eth | $13,610,169.00 15,903,766.914 CRV | 5.7058% |
6 | OKX | CRV-USDT | $0.8425 0.0002526 Eth | $12,204,131.00 14,318,192.253 CRV | 5.1370% |
7 | Bybit | CRV-USDT | $0.8433 0.0002529 Eth | $10,918,675.00 12,868,253.900 CRV | 4.6168% |
8 | Bitget | CRV-USDT | $0.8423 0.0002526 Eth | $10,397,148.00 12,218,985.326 CRV | 4.3838% |
9 | MEXC | CRV-USDT | $0.8441 0.0002531 Eth | $7,135,367.00 8,453,388.544 CRV | 3.0329% |
10 | LBank | CRV-USDT | $0.8431 0.0002528 Eth | $5,454,570.00 6,469,769.850 CRV | 2.3212% |
11 | Bitunix | CRV-USDT | $0.8427 0.0002527 Eth | $4,686,352.00 5,560,214.200 CRV | 1.9949% |
12 | Hotcoin | CRV-USDT | $0.8429 0.0002528 Eth | $4,523,562.00 5,366,432.400 CRV | 1.9253% |
13 | XT.COM | CRV-USDT | $0.8461 0.0002543 Eth | $4,469,386.00 5,251,907.600 CRV | 1.8842% |
14 | Niza Global | CRV-USD | $0.845 0.0002537 Eth | $3,708,429.00 4,401,904.764 CRV | 1.5793% |
15 | Kraken | CRV-USD | $0.842 0.0002525 Eth | $3,661,253.00 4,348,281.967 CRV | 1.5600% |
16 | BTSE | CRV-USDT | $0.8433 0.0002528 Eth | $3,412,579.00 4,046,540.937 CRV | 1.4518% |
17 | Trubit | CRV-USDT | $0.8437 0.0002530 Eth | $3,406,622.00 4,005,710.600 CRV | 1.4371% |
18 | Slex | CRV-USDT | $0.8439 0.0002536 Eth | $3,406,349.00 3,999,341.900 CRV | 1.4349% |
19 | KuCoin | CRV-USDT | $0.8429 0.0002528 Eth | $3,202,044.00 3,798,677.227 CRV | 1.3629% |
20 | DigiFinex | CRV-USDT | $0.842 0.0002525 Eth | $2,942,881.00 3,495,008.900 CRV | 1.2539% |
21 | Phemex | CRV-USDT | $0.8447 0.0002537 Eth | $2,667,206.00 3,157,753.240 CRV | 1.1329% |
22 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.8418 0.0002524 Eth | $2,405,122.00 2,804,759.904 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 1.0063% |
23 | BYDFi | CRV-USDT | $0.8422 0.0002525 Eth | $2,313,424.00 2,746,826.300 CRV | 0.9855% |
24 | FameEX | CRV-USDT | $0.8464 0.0002537 Eth | $2,236,057.00 2,628,587.263 CRV | 0.9431% |
25 | Bullish | CRV-USDC | $0.8455 0.0002539 Eth | $2,203,421.00 2,588,299.835 CRV | 0.9286% |
26 | FMCPAY | CRV-USDT | $0.843 0.0002529 Eth | $2,171,412.00 2,545,063.800 CRV | 0.9131% |
27 | CoinW | CRV-USDT | $0.843 0.0002528 Eth | $2,126,001.00 2,521,849.197 CRV | 0.9048% |
28 | Biconomy.com | CRV-USDT | $0.8446 0.0002529 Eth | $1,931,333.00 2,263,841.790 CRV | 0.8122% |
29 | Bitrue | CRV-XRP | $0.8444 0.0002531 Eth | $1,889,092.00 2,237,243.940 CRV | 0.8027% |
30 | Dex-Trade | CRV-USDT | $0.8437 0.0002533 Eth | $1,877,886.00 2,225,763.400 CRV | 0.7985% |
31 | Bitrue | CRV-USDT | $0.8437 0.0002530 Eth | $1,660,966.00 1,968,570.900 CRV | 0.7063% |
32 | Azbit | CRV-USDT | $0.8432 0.0002528 Eth | $1,611,129.00 1,894,188.258 CRV | 0.6796% |
33 | Coinstore | CRV-USDT | $0.8443 0.0002532 Eth | $1,580,932.00 1,858,983.500 CRV | 0.6670% |
34 | Luno | CRV-MYR | $0.8482 0.0002543 Eth | $1,539,771.00 1,815,314.870 CRV | 0.6513% |
35 | WEEX | CRV-USDT | $0.8432 0.0002530 Eth | $1,491,331.00 1,754,875.000 CRV | 0.6296% |
36 | HitBTC | CRV-USDT | $0.843 0.0002527 Eth | $1,378,927.00 1,614,050.400 CRV | 0.5791% |
37 | Bitvavo | CRV-EUR | $0.8451 0.0002538 Eth | $1,370,327.00 1,621,574.248 CRV | 0.5818% |
38 | FMFW.io | CRV-USDT | $0.847 0.0002552 Eth | $1,344,893.00 1,587,915.900 CRV | 0.5697% |
39 | Bitrue | CRV-USDC | $0.8444 0.0002532 Eth | $1,225,361.00 1,451,083.250 CRV | 0.5206% |
40 | Bitkub | CRV-THB | $0.8452 0.0002534 Eth | $1,086,162.00 1,285,069.113 CRV | 0.4610% |
41 | Toobit | CRV-USDT | $0.8433 0.0002529 Eth | $1,012,056.00 1,189,616.400 CRV | 0.4268% |
42 | Ourbit | CRV-USDT | $0.8431 0.0002529 Eth | $1,000,813.00 1,177,370.690 CRV | 0.4224% |
43 | Binance | CRV-BTC | $0.8439 0.0002531 Eth | $919,317.00 1,081,791.500 CRV | 0.3881% |
44 | BingX | CRV-USDT | $0.8421 0.0002525 Eth | $862,785.00 1,014,081.420 CRV | 0.3638% |
45 | PointPay | CRV-USDT | $0.8432 0.0002529 Eth | $783,708.00 922,729.619 CRV | 0.3311% |
46 | CoinEx | CRV-USDT | $0.8459 0.0002540 Eth | $699,072.00 818,483.335 CRV | 0.2937% |
47 | Uniswap V3 (Ethereum) | 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52 | $0.8388 0.0002515 Eth | $629,015.00 140,891.406 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B | 0.0505% |
48 | Coinbase Exchange | CRV-EUR | $0.844 0.0002532 Eth | $622,553.00 737,643.350 CRV | 0.2646% |
49 | BitMart | CRV-USDT | $0.8431 0.0002528 Eth | $604,331.00 716,782.620 CRV | 0.2572% |
50 | PancakeSwap V3 (Arbitrum) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.8427 0.0002526 Eth | $593,650.00 690,017.118 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.2476% |
51 | Binance | CRV-TRY | $0.8473 0.0002540 Eth | $577,529.00 674,687.400 CRV | 0.2421% |
52 | Hibt | CRV-USDT | $0.8443 0.0002531 Eth | $550,145.00 645,123.222 CRV | 0.2315% |
53 | BitDelta | CRV-USDT | $0.8423 0.0002526 Eth | $481,216.00 563,184.100 CRV | 0.2021% |
54 | OKX | CRV-USDC | $0.8443 0.0002532 Eth | $475,131.00 559,800.241 CRV | 0.2008% |
55 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.8426 0.0002526 Eth | $470,626.00 551,306.406 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1978% |
56 | P2B | CRV-USD | $0.843 0.0002528 Eth | $429,867.00 509,925.600 CRV | 0.1829% |
57 | Kraken | CRV-EUR | $0.8486 0.0002545 Eth | $421,834.00 497,094.608 CRV | 0.1783% |
58 | Niza Global | CRV-EUR | $0.8485 0.0002545 Eth | $418,570.00 497,094.608 CRV | 0.1783% |
59 | Bit2Me | CRV-EUR | $0.8487 0.0002546 Eth | $415,968.00 487,152.715 CRV | 0.1748% |
60 | Curve (Arbitrum) | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.8463 0.0002541 Eth | $408,985.00 412,952.979 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.1482% |
61 | LocalTrade | CRV-USDT | $0.8444 0.0002532 Eth | $381,386.00 451,652.707 CRV | 0.1620% |
62 | Tokenize | CRV-SGD | $0.8412 0.0002522 Eth | $273,466.00 325,081.920 CRV | 0.1166% |
63 | Tokenize | CRV-USD | $0.8475 0.0002540 Eth | $272,339.00 321,344.079 CRV | 0.1153% |
64 | Curve (Optimism) | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.8532 0.0002558 Eth | $238,670.00 240,413.759 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0863% |
65 | Nonkyc.io | CRV-USDT | $0.8453 0.0002534 Eth | $236,264.00 276,870.069 CRV | 0.0993% |
66 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.8437 0.0002530 Eth | $234,688.00 278,391.470 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0999% |
67 | BloFin | CRV-USDT | $0.8433 0.0002529 Eth | $232,133.00 272,441.300 CRV | 0.0977% |
68 | Coinbase Exchange | CRV-GBP | $0.844 0.0002532 Eth | $188,870.00 223,767.100 CRV | 0.0803% |
69 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.8467 0.0002540 Eth | $173,756.00 221,501.851 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0795% |
70 | BVOX | CRV-USDT | $0.8434 0.0002529 Eth | $172,242.00 201,522.800 CRV | 0.0723% |
71 | BigONE | CRV-USDT | $0.8466 0.0002539 Eth | $167,486.00 197,838.469 CRV | 0.0710% |
72 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.8433 0.0002529 Eth | $166,022.00 192,569.254 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0691% |
73 | Gemini | CRV-USD | $0.8441 0.0002531 Eth | $165,021.00 195,499.735 CRV | 0.0701% |
74 | Icrypex | CRV-USDT | $0.8445 0.0002532 Eth | $153,335.00 181,561.474 CRV | 0.0651% |
75 | Tapbit | CRV-USDT | $0.8433 0.0002530 Eth | $151,465.00 177,821.500 CRV | 0.0638% |
76 | Pionex | CRV-USDT | $0.8456 0.0002535 Eth | $142,903.00 167,893.743 CRV | 0.0602% |
77 | Deepcoin | CRV-USDT | $0.8427 0.0002527 Eth | $134,371.00 162,410.800 CRV | 0.0583% |
78 | LATOKEN | CRV-USDT | $0.846 0.0002540 Eth | $69,618.00 82,290.454 CRV | 0.0295% |
79 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.8488 0.0002545 Eth | $55,801.00 64,843.184 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0233% |
80 | CEX.IO | CRV-USD | $0.844 0.0002531 Eth | $50,421.00 58,757.260 CRV | 0.0211% |
81 | Curve (Optimism) | 0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.8535 0.0002560 Eth | $46,629.00 25,982.601 0X4200000000000000000000000000000000000042 | 0.0093% |
82 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.8531 0.0002558 Eth | $46,285.00 53,888.280 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0193% |
83 | Globe | CRV-USDT | $0.8429 0.0002528 Eth | $42,427.00 49,776.575 CRV | 0.0179% |
84 | Bitso | CRV-USD | $0.841 0.0002522 Eth | $39,785.00 47,305.296 CRV | 0.0170% |
85 | WOO X | CRV-USDT | $0.8438 0.0002531 Eth | $37,431.00 44,358.738 CRV | 0.0159% |
86 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.8445 0.0002532 Eth | $36,854.00 42,679.160 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0153% |
87 | TokoCrypto | CRV-USDT | $0.8447 0.0002533 Eth | $24,904.00 29,480.689 CRV | 0.0106% |
88 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.8441 0.0002531 Eth | $16,804.13 19,611.991 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0070% |
89 | HashKey Global | CRV-USDT | $0.8491 0.0002544 Eth | $15,256.76 17,795.500 CRV | 0.0064% |
90 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $0.8442 0.0002531 Eth | $13,939.31 16,407.699 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0059% |
91 | FMFW.io | CRV-BTC | $0.8479 0.0002540 Eth | $9,363.67 11,044.000 CRV | 0.0040% |
92 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.8445 0.0002532 Eth | $8,948.82 10,428.509 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0037% |
93 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $0.8453 0.0002535 Eth | $5,963.49 6,943.652 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0025% |
94 | Coinmetro | CRV-USDT | $0.8447 0.0002530 Eth | $4,223.42 5,000.000 CRV | 0.0018% |
95 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7 | $0.8532 0.0002558 Eth | $3,848.55 4,591.664 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0016% |
96 | MEXC | CRV-ETH | $0.8449 0.0002539 Eth | $1,780.47 2,107.305 CRV | 0.0008% |
97 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.8452 0.0002534 Eth | $1,599.27 1,865.578 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0007% |
98 | Uniswap V3 (Optimism) | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.8433 0.0002528 Eth | $1,130.85 1,324.110 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0005% |
99 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.8483 0.0002543 Eth | $1,034.59 1,202.418 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0004% |
100 | CEX.IO | CRV-USDT | $0.8464 0.0002542 Eth | $21.96 26.265 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
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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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