v3.26.1
FINANCIAL HIGHLIGHTS - Summary of Per Share Performance (Details) - Franklin Solana ETF [Member]
 3 Months Ended
Jun. 30, 2026
$ / shares
FINANCIAL HIGHLIGHTS [Abstract]  
Net asset value per Share, beginning of period (in Dollars per share) $ 14.41
Net investment income (loss) (in Dollars per share) 0.18 [1]
Net realized and unrealized gain (loss) on investment in Solana (in Dollars per share) (1.39) [2]
Net change in net assets from operations (in Dollars per share) (1.21)
Distributions of net staking rewards to Shareholders (in Dollars per share) (0.1)
Net asset value per Share, end of period (in Dollars per share) $ 13.1
Total return, at net asset value (8.39%) [3]
Ratio to average net assets(d)  
Net investment income (loss) 5.29% [4]
Gross expenses 0.51% [4]
Net expenses 0.37% [4]
[1] Calculated using average Shares outstanding.
[2] 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.
[3] 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. Total return for periods of less than a year are not annualized.
[4] Annualized.