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Fair Value of Bitcoin - Schedule of Changes in Quantity of Bitcoin and Fair Value (Details) $ in Thousands | 12 Months Ended
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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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