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Creations and Redemptions of Shares - Schedule of Investment Owned Balanced Contract Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Bitcoin
Creations And Redemptions Of Shares [Line Items]
Investment receivable	$ 0	$ 0
Ether
Creations And Redemptions Of Shares [Line Items]
Investment receivable	0	0
XRP
Creations And Redemptions Of Shares [Line Items]
Investment receivable	0	0
SOL
Creations And Redemptions Of Shares [Line Items]
Investment receivable	0	0
ADA
Creations And Redemptions Of Shares [Line Items]
Investment receivable	0	0
AVAX
Creations And Redemptions Of Shares [Line Items]
Investment receivable	0	0
Digital Assets
Creations And Redemptions Of Shares [Line Items]
Investment receivable	$ 0	$ 0

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Creations and redemptions of shares.

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- Definition

Investment owned balanced contract receivable.

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