Portfolio Rebalancing - Additional Information (Details)																																								3 Months Ended								12 Months Ended
	Apr. 05, 2022 USD ($)	Apr. 05, 2022 Bitcoin	Apr. 05, 2022 Ethereum	Apr. 05, 2022 BitcoinCash	Apr. 05, 2022 Litecoin	Apr. 05, 2022 Chainlink	Apr. 05, 2022 Cardano	Apr. 05, 2022 Solana	Apr. 05, 2022 Uniswap	Apr. 05, 2022 Avalanche	Apr. 05, 2022 Polkadot	Oct. 01, 2021 USD ($)	Oct. 01, 2021 Bitcoin	Oct. 01, 2021 Ethereum	Oct. 01, 2021 BitcoinCash	Oct. 01, 2021 Litecoin	Oct. 01, 2021 Chainlink	Oct. 01, 2021 Cardano	Oct. 01, 2021 Solana	Oct. 01, 2021 Uniswap	Jul. 01, 2021 USD ($)	Jul. 01, 2021 Bitcoin	Jul. 01, 2021 Ethereum	Jul. 01, 2021 BitcoinCash	Jul. 01, 2021 Litecoin	Jul. 01, 2021 Chainlink	Jul. 01, 2021 Cardano	Apr. 02, 2021 USD ($)	Apr. 02, 2021 Bitcoin	Apr. 02, 2021 Ethereum	Apr. 02, 2021 BitcoinCash	Apr. 02, 2021 Litecoin	Apr. 02, 2021 Chainlink	Jan. 04, 2021 USD ($)	Jan. 04, 2021 XRP	Jan. 04, 2021 Bitcoin	Jan. 04, 2021 Ethereum	Jan. 04, 2021 BitcoinCash	Jan. 04, 2021 Litecoin	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Portfolio Rebalancing [Line Items]
Minimum percentage of market capitalization in digital asset market																																																70.00%
Changes in market capitalization to rebalance fund portfolio																																																		$ 0
Net realized gain (loss) on investments in digital assets	$ 12,437,503											$ 14,980,028									$ 11,651,902							$ 4,398,884						$ (1,754,085)						$ 13,507,000	$ 1,772,000	$ 17,866,000	$ 13,704,000	$ 6,668,000	$ 152,000	$ 426,000	$ 47,000	$ 46,849,000	$ 7,293,000	$ (147,000)
Sale of portfolio quantity		299.12356960	799.44969220	525.96222080			471,808.6330000						431.1877932	568.9034008	312.6826491	1,332.295291	4,669.367651					225.33929087	3,622.13172739	68.33481591	722.93691458				90.96800168		58.85027824				16,838,197.646686
Purchase of portfolio quantity					154.01722821	600.38311024		7,207.59678111	23,446.19411389	89,505.76684675	330,149.03708006							393,666.736667	106,015.34887688	213,332.22308637						13,460.14709855	11,256,632.53387140			381.07775172		5.31504341	154,021.49829970			41.70190288	2,160.57566673	3.81770515	2,004.91717874
Minimum
Portfolio Rebalancing [Line Items]
Portfolio rebalancing period																																																1 day
Maximum
Portfolio Rebalancing [Line Items]
Portfolio rebalancing period																																																5 days