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Note 6 - Financial Highlights - Hashdex Bitcoin Futures ETF (Tables)
12 Months Ended
Dec. 31, 2023
Hashdex Bitcoin Futures ETF [Member]  
Notes Tables  
Investment Company, Financial Highlights [Table Text Block]
      

From the commencement

 
  

Year Ended

  

of operations (September 15, 2022)

 
  

December 31, 2023

  

through December 31, 2022

 

Per Share Operation Performance

        

Net asset value at beginning of period

 $21.40  $25.00 

Income (loss) from investment operations:

        

Investment income

  1.59   0.19 

Net realized and unrealized gain (loss) on cryptocurrency futures contracts

  28.09   (3.73)

Total expenses, net

  (0.34)  (0.06)

Net increase (decrease) in net asset value

  29.34   (3.60)

Net asset value at end of period

 $50.74  $21.40 

Total Return

  137.06

%

  (14.39

 

)%

Ratios to Average Net Assets (Annualized)

        

Total expenses

  15.34

%

  17.60

%

Total expenses, net

  0.94

%

  0.94

%

Net investment income

  3.46

%

  1.90

%