Statements of Assets and Liabilities (Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands	Sep. 30, 2025	Dec. 31, 2024
Investment in bitcoin, cost	$ 62,337,415,997	$ 37,372,942,571
Shares, par value (in dollars per share)	$ 0	$ 0
Shares, issued (in shares)	1,356,440,000	970,440,000