Fair Value of BCH - Changes in Quantity of BCH and Respective Fair Value (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2026 USD ($) BitcoinCash	Mar. 31, 2025 USD ($) BitcoinCash	Mar. 31, 2026 USD ($) BitcoinCash	Mar. 31, 2025 USD ($) BitcoinCash
Fair Value Disclosures [Abstract]
Investment Owned, Balance \| BitcoinCash			392,285.62958128	344,528.53494921
BCH contributed \| BitcoinCash			0	53,481.86283225
BCH distributed for Sponsor's Fee, related party \| BitcoinCash			(7,293.66789976)	(7,032.28724665)
Net change in unrealized appreciation/depreciation on investment in BCH \| BitcoinCash			0	0
Net realized loss on investment in BCH \| BitcoinCash			0	0
Investment Owned, Balance \| BitcoinCash	384,991.96168152	390,978.11053481	384,991.96168152	390,978.11053481
Investment Owned, at Fair Value \| $			$ 202,961	$ 135,014
BCH contributed \| $			0	21,697
BCH distributed for Sponsor's Fee, related party \| $			(3,964)	(2,706)
Net change in unrealized appreciation/depreciation on investment in BCH \| $	$ (49,845)	$ (52,339)	(19,088)	(35,860)
Net realized gain (loss) on investment in BCH \| $	333	(45)	1,122	(23)
Investment Owned, at Fair Value \| $	$ 181,031	$ 118,122	$ 181,031	$ 118,122