Note 3 - Trust Expenses (Details Textual) - USD ($)		1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 24, 2024	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2025	Jul. 23, 2025
Sponsors Fee Annualized Accrual Rate Based on Daily Net Asset Value	0.25%			0.25%
Sponsor's Fees		$ 420	$ 1,882,114	$ 3,920,616
Sponsor Fees Waived		$ (0)	$ 751,364	1,543,217
Maximum [Member]
Legal Fees Per Year				$ 500,000
Subsequent Event [Member]
Sponsors Fee After Fee Waiver, Percentage					0.12%
Maximum Amount of Trust Assets for Sponsor's Fee After Fee Waiver					$ 2,500,000,000