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Overview
Max Total Supply
2,200,267,728.86382362987257785 CRV
Holders
88,501 ( -0.023%)
Market
Price
$1.08 @ 0.000278 ETH (-1.42%)
Onchain Market Cap
$2,372,066,005.38
Circulating Supply Market Cap
$1,343,594,185.67
Other Info
Token Contract (WITH 18 Decimals)
Balance
933.92503260428383886 CRVValue
$1,006.85 ( ~0.259395984148807 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | CRV-USDT | $1.088 0.0002803 Eth | $161,336,476.00 146,879,341.900 CRV | 19.3828% |
2 | Gate.io | CRV-USDT | $1.088 0.0002802 Eth | $94,024,262.00 85,347,874.988 CRV | 11.2628% |
3 | Websea | CRV-USDT | $1.075 0.0002782 Eth | $85,604,495.00 0.000 CRV | 0.0000% |
4 | WhiteBIT | CRV-USDT | $1.075 0.0002778 Eth | $79,544,224.00 73,979,158.851 CRV | 9.7626% |
5 | OKX | CRV-USDT | $1.091 0.0002810 Eth | $53,945,208.00 49,075,384.783 CRV | 6.4762% |
6 | MEXC | CRV-USDT | $1.078 0.0002782 Eth | $47,690,835.00 44,249,384.439 CRV | 5.8393% |
7 | Bitget | CRV-USDT | $1.09 0.0002806 Eth | $36,485,606.00 33,035,534.391 CRV | 4.3595% |
8 | Coinbase Exchange | CRV-USD | $1.087 0.0002800 Eth | $34,420,664.00 31,665,743.850 CRV | 4.1787% |
9 | HTX | CRV-USDT | $1.087 0.0002800 Eth | $34,015,457.00 30,986,610.389 CRV | 4.0891% |
10 | Bybit | CRV-USDT | $1.088 0.0002802 Eth | $32,037,737.00 29,152,028.770 CRV | 3.8470% |
11 | Bitunix | CRV-USDT | $1.081 0.0002783 Eth | $25,839,687.00 23,906,881.000 CRV | 3.1548% |
12 | Slex | CRV-USDT | $1.08 0.0002782 Eth | $19,993,686.00 18,224,566.600 CRV | 2.4050% |
13 | BTSE | CRV-USDT | $1.091 0.0002811 Eth | $17,027,826.00 15,602,698.796 CRV | 2.0590% |
14 | XT.COM | CRV-USDT | $1.079 0.0002786 Eth | $13,160,110.00 11,978,416.500 CRV | 1.5807% |
15 | LBank | CRV-USDT | $1.083 0.0002789 Eth | $11,118,212.00 10,262,992.470 CRV | 1.3543% |
16 | DigiFinex | CRV-USDT | $1.086 0.0002798 Eth | $8,935,805.00 8,225,534.600 CRV | 1.0855% |
17 | Niza Global | CRV-USD | $1.089 0.0002805 Eth | $8,832,016.00 8,081,931.995 CRV | 1.0665% |
18 | Kraken | CRV-USD | $1.089 0.0002805 Eth | $8,801,224.00 8,081,931.995 CRV | 1.0665% |
19 | Hotcoin | CRV-USDT | $1.077 0.0002781 Eth | $6,849,871.00 6,360,043.000 CRV | 0.8393% |
20 | KuCoin | CRV-USDT | $1.091 0.0002809 Eth | $6,639,121.00 6,086,173.551 CRV | 0.8032% |
21 | FameEX | CRV-USDT | $1.087 0.0002800 Eth | $6,453,903.00 5,874,999.422 CRV | 0.7753% |
22 | BYDFi | CRV-USDT | $1.078 0.0002782 Eth | $6,202,214.00 5,754,651.900 CRV | 0.7594% |
23 | CoinW | CRV-USDT | $1.086 0.0002799 Eth | $6,027,373.00 5,549,321.297 CRV | 0.7323% |
24 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.087 0.0002800 Eth | $5,524,566.00 4,996,421.357 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.6593% |
25 | Biconomy.com | CRV-USDT | $1.085 0.0002794 Eth | $4,792,296.00 4,361,221.857 CRV | 0.5755% |
26 | Bitrue | CRV-USDT | $1.075 0.0002783 Eth | $4,369,611.00 4,063,704.830 CRV | 0.5363% |
27 | Coinstore | CRV-USDT | $1.086 0.0002797 Eth | $4,282,794.00 3,893,111.500 CRV | 0.5137% |
28 | HitBTC | CRV-USDT | $1.09 0.0002807 Eth | $4,148,617.00 3,781,943.500 CRV | 0.4991% |
29 | Binance | CRV-USDC | $1.086 0.0002796 Eth | $4,108,081.00 3,736,057.400 CRV | 0.4930% |
30 | FMFW.io | CRV-USDT | $1.077 0.0002787 Eth | $4,090,279.00 3,797,387.800 CRV | 0.5011% |
31 | Bullish | CRV-USDC | $1.073 0.0002777 Eth | $3,976,156.00 3,627,683.495 CRV | 0.4787% |
32 | Bitvavo | CRV-EUR | $1.073 0.0002778 Eth | $3,515,665.00 3,276,960.637 CRV | 0.4324% |
33 | Dex-Trade | CRV-USDT | $1.079 0.0002784 Eth | $3,385,411.00 3,138,209.301 CRV | 0.4141% |
34 | Phemex | CRV-USDT | $1.08 0.0002781 Eth | $3,349,738.00 3,102,583.180 CRV | 0.4094% |
35 | Binance | CRV-BTC | $1.087 0.0002798 Eth | $3,283,218.00 3,028,342.200 CRV | 0.3996% |
36 | Hibt | CRV-USDT | $1.081 0.0002784 Eth | $3,233,740.00 2,941,504.465 CRV | 0.3882% |
37 | Toobit | CRV-USDT | $1.087 0.0002802 Eth | $3,213,072.00 2,924,503.900 CRV | 0.3859% |
38 | BingX | CRV-USDT | $1.087 0.0002800 Eth | $3,193,237.00 2,904,916.096 CRV | 0.3833% |
39 | Trubit | CRV-USDT | $1.079 0.0002787 Eth | $2,995,021.00 2,732,216.400 CRV | 0.3606% |
40 | Binance | CRV-TRY | $1.078 0.0002778 Eth | $2,719,975.00 2,471,198.400 CRV | 0.3261% |
41 | PointPay | CRV-USDT | $1.088 0.0002802 Eth | $2,690,226.00 2,448,939.775 CRV | 0.3232% |
42 | FMCPAY | CRV-USDT | $1.087 0.0002799 Eth | $2,686,255.00 2,444,667.370 CRV | 0.3226% |
43 | Ourbit | CRV-USDT | $1.085 0.0002795 Eth | $2,621,292.00 2,384,821.770 CRV | 0.3147% |
44 | Currency.com | CRV-USD | $1.085 0.0002793 Eth | $2,511,690.00 2,315,028.000 CRV | 0.3055% |
45 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.083 0.0002789 Eth | $2,381,579.00 2,167,587.842 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.2860% |
46 | CoinEx | CRV-USDT | $1.085 0.0002795 Eth | $2,370,173.00 2,160,005.164 CRV | 0.2850% |
47 | Luno | CRV-MYR | $1.086 0.0002797 Eth | $2,271,825.00 2,091,735.560 CRV | 0.2760% |
48 | Bithumb | CRV-KRW | $1.075 0.0002769 Eth | $2,181,962.00 2,029,687.297 CRV | 0.2678% |
49 | Curve (Ethereum) | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XD533A949740BB3306D119CC777FA900BA034CD52 | $1.10 0.0002852 Eth | $2,132,723.00 549.898 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0001% |
50 | Bitkub | CRV-THB | $1.076 0.0002780 Eth | $2,108,659.00 1,959,586.178 CRV | 0.2586% |
51 | Coinbase Exchange | CRV-EUR | $1.083 0.0002787 Eth | $1,798,864.00 1,661,332.980 CRV | 0.2192% |
52 | WhiteBIT | CRV-BTC | $1.083 0.0002788 Eth | $1,693,677.00 1,564,530.700 CRV | 0.2065% |
53 | BitMart | CRV-USDT | $1.085 0.0002795 Eth | $1,614,041.00 1,488,067.800 CRV | 0.1964% |
54 | WEEX | CRV-USDT | $1.074 0.0002780 Eth | $1,503,448.00 1,399,885.161 CRV | 0.1847% |
55 | Icrypex | CRV-USDT | $1.079 0.0002791 Eth | $1,358,871.00 1,259,625.178 CRV | 0.1662% |
56 | OKX | CRV-USDC | $1.089 0.0002805 Eth | $1,351,238.00 1,229,630.646 CRV | 0.1623% |
57 | Kraken | CRV-EUR | $1.089 0.0002804 Eth | $1,152,757.00 1,058,726.480 CRV | 0.1397% |
58 | P2B | CRV-USD | $1.085 0.0002794 Eth | $920,036.00 847,959.030 CRV | 0.1119% |
59 | Upbit | CRV-BTC | $1.084 0.0002791 Eth | $872,489.00 805,142.395 CRV | 0.1062% |
60 | BitDelta | CRV-USDT | $1.08 0.0002780 Eth | $851,743.00 774,528.100 CRV | 0.1022% |
61 | Nonkyc.io | CRV-USDT | $1.072 0.0002768 Eth | $739,756.00 673,893.869 CRV | 0.0889% |
62 | WhiteBIT | CRV-TRY | $1.085 0.0002795 Eth | $728,944.00 671,719.100 CRV | 0.0886% |
63 | Bitso | CRV-USD | $1.073 0.0002764 Eth | $714,380.00 665,691.767 CRV | 0.0878% |
64 | BloFin | CRV-USDT | $1.088 0.0002804 Eth | $620,866.00 560,790.400 CRV | 0.0740% |
65 | LATOKEN | CRV-BTC | $1.076 0.0002782 Eth | $615,545.00 572,122.273 CRV | 0.0755% |
66 | Quickswap (v3) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.077 0.0002772 Eth | $578,708.00 533,577.922 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0704% |
67 | Pionex | CRV-USDT | $1.075 0.0002777 Eth | $575,446.00 524,450.599 CRV | 0.0692% |
68 | Gemini | CRV-USD | $1.087 0.0002800 Eth | $504,577.00 464,106.549 CRV | 0.0612% |
69 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.078 0.0002777 Eth | $470,430.00 433,518.834 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0572% |
70 | BigONE | CRV-USDT | $1.089 0.0002804 Eth | $423,939.00 389,399.376 CRV | 0.0514% |
71 | WEEX | CRV-USDC | $1.073 0.0002777 Eth | $418,450.00 381,254.000 CRV | 0.0503% |
72 | Bitazza | CRV-USDT | $1.084 0.0002791 Eth | $327,224.00 297,876.700 CRV | 0.0393% |
73 | Coinbase Exchange | CRV-GBP | $1.075 0.0002771 Eth | $315,656.00 293,575.720 CRV | 0.0387% |
74 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.076 0.0002771 Eth | $309,282.00 281,416.548 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0371% |
75 | Curve (Arbitrum) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $1.089 0.0002803 Eth | $278,005.00 245,081.709 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0323% |
76 | KickEX | CRV-USDT | $1.083 0.0002789 Eth | $243,314.00 224,601.727 CRV | 0.0296% |
77 | Bitget | CRV-BTC | $1.091 0.0002809 Eth | $231,483.00 209,975.629 CRV | 0.0277% |
78 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.10 0.0002835 Eth | $186,996.00 165,022.770 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0218% |
79 | Coinbase Exchange | CRV-BTC | $1.082 0.0002785 Eth | $158,626.00 146,630.280 CRV | 0.0193% |
80 | LATOKEN | CRV-USDT | $1.086 0.0002797 Eth | $153,176.00 141,036.355 CRV | 0.0186% |
81 | DeGate | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.092 0.0002811 Eth | $153,131.00 138,306.279 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0183% |
82 | TokoCrypto | CRV-USDT | $1.079 0.0002784 Eth | $118,560.00 109,913.527 CRV | 0.0145% |
83 | Globe | CRV-USDT | $1.08 0.0002789 Eth | $90,322.00 82,155.579 CRV | 0.0108% |
84 | Uniswap V3 (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.076 0.0002771 Eth | $82,401.00 75,415.590 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0100% |
85 | Uniswap V3 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.085 0.0002793 Eth | $76,690.00 66,617.452 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0088% |
86 | Sushiswap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.08 0.0002780 Eth | $74,898.00 68,051.195 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0090% |
87 | Sushiswap (Polygon POS) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.071 0.0002757 Eth | $52,714.00 47,985.928 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0063% |
88 | Nonkyc.io | CRV-BTC | $1.083 0.0002790 Eth | $30,675.00 28,365.551 CRV | 0.0037% |
89 | Gate.io | CRV-ETH | $1.083 0.0002788 Eth | $19,908.66 17,992.940 CRV | 0.0024% |
90 | ApeSwap (Polygon) | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.079 0.0002779 Eth | $13,006.91 12,064.688 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0016% |
91 | Uniswap V2 (Ethereum) | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $1.085 0.0002793 Eth | $6,727.57 5,809.279 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0008% |
92 | DeFi Swap | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.087 0.0002798 Eth | $5,956.34 5,415.587 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0007% |
93 | Luno | CRV-XBT | $1.082 0.0002785 Eth | $5,743.20 5,309.000 CRV | 0.0007% |
94 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.081 0.0002786 Eth | $4,595.16 4,169.937 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0006% |
95 | Uniswap V3 (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | $1.084 0.0002791 Eth | $4,531.73 4,092.016 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0005% |
96 | Sushiswap (Arbitrum One) | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.085 0.0002793 Eth | $4,203.59 3,806.752 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0005% |
97 | Gravity Finance | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.075 0.0002769 Eth | $688.08 624.269 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
98 | Energiswap | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $1.078 0.0002780 Eth | $309.99 280.346 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0000% |
99 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $1.08 0.0002781 Eth | $185.67 171.401 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0000% |
100 | Quickswap | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $1.082 0.0002797 Eth | $141.78 129.173 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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