v3.26.1
Organization - Additional Information (Detail) - shares
3 Months Ended 6 Months Ended
Nov. 21, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Class of Stock [Line Items]          
Shares issued   510,000 5,900 1,870,000 32,800
Grayscale Securities, Seed Capital Investor          
Class of Stock [Line Items]          
Shares issued 10,000        
Shares issue one or more blocks 10,000