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Note 3 - Summary of Significant Accounting Policies - Hashdex Bitcoin Futures ETF (Details Textual)
 3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
shares
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
shares
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Unrecognized Tax Benefits, Ending Balance $ 0   $ 0   $ 0 $ 0 $ 0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense 0 $ 0 0 $ 0      
Money Market Funds, at Carrying Value 118,693,424   118,693,424   188,640,417    
Hashdex Bitcoin Futures ETF [Member]              
Unrecognized Tax Benefits, Ending Balance $ 0   0   0    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense     $ 0        
Authorized Purchaser, Minimum Level of Creation Baskets, Shares (in shares) | shares 10,000   10,000        
Authorized Purchaser, Redemption Baskets, Minimum Blocks of Shares (in shares) | shares 10,000   10,000        
Minimum Level of Shares Per Redemption Basket (in shares) | shares 50,000   50,000        
Minimum Number of RedemptionBaskets 5   5        
Money Market Funds, at Carrying Value $ 1,414,157   $ 1,414,157   $ 701,969    
Hashdex Bitcoin Futures ETF [Member] | Teucrium Trading, LLC [Member]              
Management Fee, Percentage of Average Daily Net Assets     0.94%