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Concentration of Risk - Additional Information (Details) - Coinbase Custody Trust Company, LLC
3 Months Ended
Mar. 31, 2025
USD ($)
$ / shares
Concentration Risk [Line Items]  
Fair value of bitcoins acquired | $ $ 173,794,481
Ether index price per share | $ / shares $ 1,827.33
Investment, Type [Extensible Enumeration] Lukka Prime Rate [Member]