STATEMENTS OF ASSETS AND LIABILITIES (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Cost of investment in Ether at fair value	$ 899,990	$ 608,668
Common Stock, Shares Authorized, Unlimited [Fixed List]	Unlimited	Unlimited
Number of Authorized Shares not Disclosed	true

Cost of the investment.

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