v3.26.1
Note 1 - Organization (Details Textual)
 2 Months Ended
Jun. 10, 2026
Jun. 09, 2026
Apr. 21, 2026
USD ($)
$ / shares
shares
Jun. 30, 2026
shares
Stock Issued During Period, Shares, New Issues (in shares)       880,000
Management and Service Fees, Base Rate 0.65%     0.65%
Bitcoin [Member]        
Crypto Asset, Number of Units, Purchase   110    
BlackRock Financial Management, Inc. [Member]        
Stock Issued During Period, Shares, New Issues (in shares)     2,000  
Stock Issued During Period, Value, New Issues | $     $ 100,000  
Shares Issued, Price Per Share (in dollars per share) | $ / shares     $ 50