Quarterly Statements of Operations - Schedule of Quarterly Statements of Operations (Details) - USD ($)													3 Months Ended								12 Months Ended
	Apr. 03, 2025	Jan. 04, 2025	Oct. 03, 2024	Jul. 03, 2024	Apr. 03, 2024	Jan. 04, 2024	Oct. 04, 2023	Jul. 06, 2023	Apr. 05, 2023	Jan. 05, 2023	Oct. 05, 2022	Jul. 07, 2022	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Expenses:
Manager's Fee, related party													$ 4,446,000	$ 4,414,000	$ 4,138,000	$ 3,135,000	$ 3,426,000	$ 2,882,000	$ 1,980,000	$ 1,584,000	$ 16,133,000	$ 9,872,000	$ 5,373,000
Net investment loss													(4,446,000)	(4,414,000)	(4,138,000)	(3,135,000)	(3,426,000)	(2,882,000)	(1,980,000)	(1,584,000)	(16,133,000)	(9,872,000)	(5,373,000)
Net realized and unrealized (loss) gain from:
Net realized gain (loss) on investments in digital assets	$ 1,247,808	$ 6,907,147	$ 339,366	$ 777,961	$ 8,236,118	$ 7,968,963	$ 149,939	$ 906,943	$ 227,762	$ (7,304,129)	$ 1,133,040	$ (14,895,069)	4,888,000	10,530,000	3,708,000	3,140,000	(5,574,000)	10,033,000	1,343,000	1,701,000	22,266,000	7,503,000	(18,714,000)
Net change in unrealized (depreciation) appreciation on investments in digital assets													173,693,000	(141,229,000)	232,027,000	(20,358,000)	(70,306,000)	225,325,000	134,194,000	(32,520,000)	244,133,000	256,693,000	122,867,000
Net realized and unrealized (loss) gain on investments													178,581,000	(130,699,000)	235,735,000	(17,218,000)	(75,880,000)	235,358,000	135,537,000	(30,819,000)	266,399,000	264,196,000	$ 104,153,000
Net (decrease) increase in net assets resulting from operations													$ 174,135,000	$ (135,113,000)	$ 231,597,000	$ (20,353,000)	$ (79,306,000)	$ 232,476,000	$ 133,557,000	$ (32,403,000)	$ 250,266,000	$ 254,324,000