Note 8 - Subsequent Events - Hashdex Bitcoin Futures ETF (Details Textual) - Tidal Commodities Trust I [Member] - Subsequent Event [Member]	Jan. 03, 2024 shares
Merger Agreement, Number of Shares Received Per Share (in shares)	1
Monthly Fee, Percentage of Management Fee	7.00%
Monthly Fee, Percentage of Monthly Average Net Assets	0.04%
Hashdex Bitcoin Futures ETF [Member]
Merger Agreement, Number of Shares Received Per Share (in shares)	1
Monthly Fee, Percentage of Management Fee	7.00%
Monthly Fee, Percentage of Monthly Average Net Assets	0.04%