STATEMENTS OF CHANGES IN NET ASSETS - USD ($)		3 Months Ended				12 Months Ended
	Jul. 01, 2021	Jun. 30, 2024	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Increase (decrease) in net assets from operations:
Net investment loss		$ (3,426,000)	$ (1,584,000)	$ (1,607,000)	$ (1,321,000)	$ (9,872,000)	$ (5,373,000)	$ (11,214,000)
Net realized gain (loss) on investments in digital assets	$ 11,651,902	(5,574,000)	1,701,000	1,055,000	(14,421,000)	7,503,000	(18,714,000)	46,849,000
Net change in unrealized appreciation on investments in digital assets		(70,306,000)	(32,520,000)	11,690,000	31,065,000	256,693,000	122,867,000	(230,026,000)
Net increase (decrease) in net assets resulting from operations						254,324,000	98,780,000	(194,391,000)
Increase in net assets from capital share transactions:
Shares issued						0	0	935,000
Net increase in net assets resulting from capital share transactions						0	0	935,000
Total increase (decrease) in net assets from operations and capital share transactions						254,324,000	98,780,000	(193,456,000)
Net assets:
Beginning of year	$ 367,308,000		$ 272,632,000		$ 173,852,000	272,632,000	173,852,000	367,308,000
End of year		$ 526,956,000		$ 272,632,000		$ 526,956,000	$ 272,632,000	$ 173,852,000
Change in Shares outstanding:
Shares outstanding at beginning of year	15,837,800		15,867,400		15,867,400	15,867,400	15,867,400	15,837,800
Shares issued						0	0	29,600
Net increase in Shares						0	0	29,600
Shares outstanding at end of year		15,867,400		15,867,400		15,867,400	15,867,400	15,867,400