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Note 6 - Financial Highlights - Hashdex Bitcoin Futures ETF (Tables)
6 Months Ended
Jun. 30, 2023
Hashdex Bitcoin Futures ETF [Member]  
Notes Tables  
Investment Company, Financial Highlights [Table Text Block]
  

Three months ended

  

Six months ended

 
  

June 30, 2023

  

June 30, 2023

 

Per Share Operation Performance

        

Net asset value at beginning of period

 $36.76  $21.40 

Income (loss) from investment operations:

        

Investment income

  0.37   0.64 

Net realized and unrealized gain on cryptocurrency futures contracts

  1.73   16.89 

Total expenses, net

  (0.08)  (0.15)

Net increase in net asset value

  2.02   17.38 

Net asset value at end of period

 $38.78  $38.78 

Total Return

  5.46%  81.16%

Ratios to Average Net Assets (Annualized)

        

Total expenses

  12.67%  15.87%

Total expenses, net

  0.94%  0.94%

Net investment income

  3.18%  3.02%