Concentration of Risk - Additional Information (Details) - Coinbase Custody Trust Company, LLC	12 Months Ended
	Dec. 31, 2024 USD ($) $ / shares
Concentration Risk [Line Items]
Fair value of bitcoins acquired | $	$ 404,528,647
Ether index price per share | $ / shares	$ 3,340.4
Investment, Type [Extensible Enumeration]	Lukka Prime Rate [Member]