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Statements of Assets and Liabilities (Parentheticals) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Statement of Financial Position [Abstract]    
Investment in Bitcoin, at cost $ 1,410,812,950 $ 895,843,577
Share par value $ 0 $ 0
Shares authorized Unlimited Unlimited