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Fair Value of Bitcoin - Schedule of Changes in Quantity of Bitcoin and Fair Value (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) Bitcoin	Dec. 31, 2024 USD ($) Bitcoin
Fair Value Disclosures [Abstract]
Beginning balance | Bitcoin	40,289.1335
In-kind creations | Bitcoin	124.9948
In-kind creations	$ 10,884
Purchases | Bitcoin	21,837.2036	61,192.0644
Sales for the redemption of Shares | Bitcoin	(23,701.7104)	(20,859.6407)
Bitcoin transferred for Sponsor Fee | Bitcoin	(81.5747)	(43.2902)
Ending balance | Bitcoin	38,468.0468	40,289.1335
Beginning balance	$ 3,762,723
Purchases	2,290,437	$ 3,709,316
Sales for the redemption of Shares	(2,351,927)	(1,533,874)
Bitcoin transferred for Sponsor Fee	(8,220)	(2,987)
Net realized gain (loss) on investment in bitcoin transferred to pay Sponsor Fee	5,019	1,288
Net realized (gain) loss from investment in bitcoin sold for redemptions	(42,062)	(50,869)
Change in unrealized appreciation (depreciation) on investment in bitcoin	(299,207)	1,639,849
Ending balance	$ 3,367,647	$ 3,762,723

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