Note 2 - Significant Accounting Policies - Activity in Ether (Details)			1 Months Ended
		Jun. 24, 2024	Jun. 30, 2024 USD ($)
Beginning balance			0
Beginning balance, average cost			$ 0
Beginning balance, fair value			$ 0
Ether purchased		3,031	3,031
Ether purchased, average cost			$ 10,000,000
Ether purchased, fair value			$ 10,000,000
Ether sold for the redemption of shares			0
Ether sold for the redemption of shares, average cost			$ 0
Ether sold for the redemption of shares, fair value			0
Ether sold for the redemption of shares, realized gain (loss)			$ 0
Ether sold to pay expenses			0
Ether sold to pay expenses, average cost			$ 0
Ether sold to pay expenses, fair value			0
Ether sold to pay expenses, realized gain (loss)			0
Net realized gain, fair value			0
Net change in unrealized appreciation/depreciation, fair value			$ 590,295
Ending balance			3,031
Ending balance, average cost			$ 10,000,000
Ending balance, fair value	[1]		10,590,295
Ending balance, realized gain (loss)			$ 0

[1] Cost of investment in ether is $10,000,000.