v3.25.2
FINANCIAL HIGHLIGHTS (Tables)
 12 Months Ended
Mar. 31, 2025
FINANCIAL HIGHLIGHTS [Abstract]  
Summary of Per Share Performance
   
For the Year
Ended
March 31, 2025
    
For the period
January 11, 2024
(Date of
commencement of
operations) through
March 31, 2024
 
          
Net asset value per Share, beginning of year
 $40.95   $26.65 (a)
Net investment loss(b)
  (0.06)    0.00 (c)
Net realized and unrealized gain (loss) on investment in bitcoin
  7.16    14.30 
Net change in net assets from operations(d)
  7.10    14.30 
Net asset value per Share, end of year
 $48.05   $40.95 
          
Total return, at net asset value(e)
  17.34%  $53.66%(f)
          
Ratio to average net assets
         
Net investment loss
  (0.14)%   0.00%(g)
Gross expenses
  0.19%   0.19%(g)
Net expenses
  0.14%   0.00%(g)
 
 
(a)
The amount shown represents the NAV per share at commencement of the Fund’s investment operations. This amount includes proceeds to the Fund from the initial bitcoin seed creation transaction conducted on January 8, 2024. Prior to January 8, 2024, 4,000 shares were acquired on December 15, 2023 at per share value of $25. Total proceeds to the Fund from the sale of the Initial Seed Shares were $100,000. On January 8, 2024, the Initial Seed Shares were redeemed for $100,000 and the Seed Capital Investor purchased two creation units in a cash transaction comprised of a total of 100,000 Shares at a per-Share price based on 29.00000000 bitcoins per Creation Unit (or 0.00058 bitcoins per Share), for a total of 58.00000000 bitcoins (the “Seed Creation Units”). The cash proceeds to the Fund from the sale of the Seed Creation Units were used by the Fund to purchase 58.00000000 bitcoins at the price of $44,973.58 per bitcoin on January 8, 2024. The transaction and other costs incurred in connection with the Seed Creation Units were paid by the Seed Capital Investor and not borne by the Fund. Thus, the ultimate total proceeds to the Fund from the sale of the Seed Creation Units were $2,608,467.81 (an amount representing 58.00000000 bitcoins). As of January 8, 2024, the net asset value of the Fund for transactions with Authorized Participants was $2,723,812.24 and the net asset value per Share of the Fund was $27.24.
(b)
Calculated using average Shares outstanding
(c)
Amount is less than $.01.
(d)
The amount shown for a share outstanding may not agree with the change in the aggregate gains and losses on investment for the period because of the timing of transactions in the Fund’s shares in relation to fluctuating market values for the Fund’s underlying investment.
(e)
Total Return at NAV is calculated assuming an initial investment made at the NAV at the beginning of the period, and redemption of Shares at NAV on the last day of the period. Total Return at NAV as shown above includes adjustments in accordance with U.S. GAAP.  
(f)
Percentage is not annualized.
(g)
Annualized based on the period from January 11, 2024 (Commencement of operations) to March 31, 2024.
Franklin Bitcoin ETF [Member]  
FINANCIAL HIGHLIGHTS [Abstract]  
Summary of Per Share Performance
        
   
For the Year
Ended
March 31, 2025
    
For the period
January 11, 2024
(Date of
commencement of
operations) through
March 31, 2024
 
          
Net asset value per Share, beginning of year
 $40.95    $26.65(a) 
Net investment loss(b)
  (0.06)    (0.00)(c)
Net realized and unrealized gain (loss) on investment in bitcoin
  7.16    14.30 
Net change in net assets from operations(d)
  7.10    14.30 
Net asset value per Share, end of year
 $48.05   $40.95 
          
Total return, at net asset value(e)
  17.34% 
53.66%(f)
          
Ratio to average net assets
         
Net investment loss
  (0.14)%    0.00%(g)
Gross expenses
  0.19%    0.19%(g) 
Net expenses
  0.14%    0.00%(g) 
 
(a)     The amount shown represents the NAV per share at commencement of the Fund’s investment operations. This amount includes proceeds to the Fund from the initial bitcoin seed creation transaction conducted on January 8, 2024. Prior to January 8, 2024, 4,000 shares were acquired on December 15, 2023 at per share value of $25. Total proceeds to the Fund from the sale of the Initial Seed Shares were $100,000. On January 8, 2024, the Initial Seed Shares were redeemed for $100,000 and the Seed Capital Investor purchased two creation units in a cash transaction comprised of a total of 100,000 Shares at a per-Share price based on 29.00000000 bitcoins per Creation Unit (or 0.00058 bitcoins per Share), for a total of 58.00000000 bitcoins (the “Seed Creation Units”). The cash proceeds to the Fund from the sale of the Seed Creation Units were used by the Fund to purchase 58.00000000 bitcoins at the price of $44,973.58 per bitcoin on January 8, 2024. The transaction and other costs incurred in connection with the Seed Creation Units were paid by the Seed Capital Investor and not borne by the Fund. Thus, the ultimate total proceeds to the Fund from the sale of the Seed Creation Units were $2,608,467.81 (an amount representing 58.00000000 bitcoins). As of January 8, 2024, the net asset value of the Fund for transactions with Authorized Participants was $2,723,812.24 and the net asset value per Share of the Fund was $27.24.
(b)     Calculated using average Shares outstanding
(c)     Amount is less than $.01.
(d)     The amount shown for a share outstanding may not agree with the change in the aggregate gains and losses on investment for the period because of the timing of transactions in the Fund’s shares in relation to fluctuating market values for the Fund’s underlying investment.
(e)     Total Return at NAV is calculated assuming an initial investment made at the NAV at the beginning of the period, and redemption of Shares at NAV on the last day of the period. Total Return at NAV as shown above includes adjustments in accordance with U.S. GAAP. 
(f)     Percentage is not annualized.
(g)    Annualized based on the period from January 11, 2024 (Commencement of operations) to March 31, 2024.