COMBINED FINANCIAL HIGHLIGHTS (Tables)

3 Months Ended

Jun. 30, 2025

FINANCIAL HIGHLIGHTS [Abstract]

Summary of Per Share Performance

		For the Three   Months Ended   June 30, 2025			For the Three   Months Ended   June 30, 2024
Net asset value per Share, beginning of period	$	48.05		$	40.95
Net investment loss(a)		(0.03	)		–
Net realized and unrealized gain (loss) on investment in bitcoin		14.84			(4.20	)
Net change in net assets from operations(b)		14.81			(4.20	)
Net asset value per Share, end of period	$	62.86		$	36.75
Total return, at net asset value(c)(d)		30.82	%		(10.26	)%
Ratio to average net assets(e)
Net investment loss		(0.19	)%		0.00	%
Gross expenses		0.19	%		0.19	%
Net expenses(f)		0.19	%		0.00	%

(a)

Calculated using average Shares outstanding.

(b)

The amount shown for a share outstanding may not agree with the change in the aggregate gains and losses for the period because of the timing of transactions in the Fund’s shares in relation to fluctuating market values for the Fund.

(c)

Calculation based on the change in net asset value of a Share during the period. Total return for periods of less than a year are not annualized.

(d)

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.

(e)

Annualized.

(f)

For the period from January 12, 2024 to August 2, 2024, the Sponsor waived a portion of the Sponsor's Fee so that the Sponsor's Fee after the fee waiver would be equal to 0.00% of the net asset value of the Fund for the first $10.0 billion of the Fund's assets. Prior to the implementation of the waiver, for the one day period January 11, 2024, the Fund accrued the Sponsor fee of 0.29% ($21).

Franklin Bitcoin ETF [Member]

FINANCIAL HIGHLIGHTS [Abstract]

Summary of Per Share Performance

		For the Three   Months Ended   June 30, 2025			For the Three   Months Ended   June 30, 2024
Net asset value per Share, beginning of period	$	48.05		$	40.95
Net investment loss(a)		(0.03	)		–
Net realized and unrealized gain (loss) on investment in bitcoin		14.84			(4.20	)
Net change in net assets from operations(b)		14.81			(4.20	)
Net asset value per Share, end of period	$	62.86		$	36.75
Total return, at net asset value(c)(d)		30.82	%		(10.26	)%
Ratio to average net assets(e)
Net investment loss		(0.19	)%		0.00	%
Gross expenses		0.19	%		0.19	%
Net expenses(f)		0.19	%		0.00	%

(a)

Calculated using average Shares outstanding.

(b)

The amount shown for a share outstanding may not agree with the change in the aggregate gains and losses for the period because of the timing of transactions in the Fund’s shares in relation to fluctuating market values for the Fund.

(c)

Calculation based on the change in net asset value of a Share during the period. Total return for periods of less than a year are not annualized.

(d)

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.

(e)

Annualized.

(f)

For the period from January 12, 2024 to August 2, 2024, the Sponsor waived a portion of the Sponsor's Fee so that the Sponsor's Fee after the fee waiver would be equal to 0.00% of the net asset value of the Fund for the first $10.0 billion of the Fund's assets. Prior to the implementation of the waiver, for the one day period January 11, 2024, the Fund accrued the Sponsor fee of 0.29% ($21).