STATEMENTS OF ASSETS AND LIABILITIES (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Statement of Financial Position [Abstract]
Cost of investment in Ether at fair value	$ 906,990	$ 899,990
Common Stock, Shares Authorized, Unlimited [Fixed List]	Unlimited	Unlimited

Cost of the investment.

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