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Fair Value of Bitcoin - Schedule of Changes in Quantity of Bitcoin (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2025 USD ($) | Sep. 30, 2025 USD ($) | Jun. 30, 2025 USD ($) | Mar. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($)
Fair Value of Bitcoin [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Quantity of bitcoin, Beginning balance |  |  |  |  | 46,607.1028 |  |  |  |  | 46,607.1028 |  |
Fair Value, Beginning balance |  |  |  |  | $ 4,352,648 |  |  |  |  | $ 4,352,648 |  |
Quantity of bitcoin, Bitcoin purchased |  |  |  |  |  |  |  |  |  | 57,400.567 | 95,498.6291 |
Fair Value, Bitcoin purchased |  |  |  |  |  |  |  |  |  | $ 5,811,330 | $ 5,903,861 |
Quantity of bitcoin, Bitcoin sold |  |  |  |  |  |  |  |  |  | (66,238.324) | (48,891.5263) |
Fair Value, Bitcoin sold |  |  |  |  |  |  |  |  |  | $ (6,646,047) | $ (3,448,694) |
Quantity of bitcoin, Net realized gain on investment in bitcoin sold to pay Sponsor fee |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Net realized gain on investment in bitcoin sold to pay Sponsor fee |  |  |  |  |  |  |  |  |  | $ 1,924 | $ 825 |
Quantity of bitcoin, Net realized gain on investment in bitcoin sold for redemptions |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Net realized gain on investment in bitcoin sold for redemptions |  |  |  |  |  |  |  |  |  | $ 1,234,569 | $ 621,878 |
Quantity of bitcoin, Change in unrealized appreciation on investment in bitcoin |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Change in unrealized appreciation on investment in bitcoin |  | $ (1,264,945) | $ (136,721) | $ 859,932 | $ (907,296) | $ 978,375 | $ (5,609) | $ (543,311) | $ 845,323 | $ (1,449,030) | $ 1,274,778 | [1]
Quantity of bitcoin, Ending balance |  | 37,769.3458 |  |  |  | 46,607.1028 |  |  |  | 37,769.3458 | 46,607.1028 |
Fair Value, Ending balance |  | $ 3,305,394 |  |  |  | $ 4,352,648 |  |  |  | $ 3,305,394 | $ 4,352,648 |
[1] | No comparative statement for 2023 has been provided as 2024 is the first fiscal year of the Trust’s operations

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