Combined Statement of Operations - USD ($)		3 Months Ended	6 Months Ended
		Sep. 30, 2024	Sep. 30, 2024
Expenses:
Sponsor's fee	[1]	$ 192,723	$ 368,406
Less waiver and reimbursement	[1]	(69,438)	(245,121)
Total expenses	[1]	123,285	123,285
Net investment loss	[1]	(123,285)	(123,285)
Net realized and change in unrealized gain (loss) on investment in bitcoin
Net realized gain (loss) from bitcoin sold for the redemption of shares and sold to pay expenses	[1]	(1,325,741)	(1,156,994)
Net change in unrealized appreciation (depreciation) on investment in bitcoin	[1]	4,121,057	(32,337,968)
Net realized and change in unrealized appreciation (depreciation) on investment in bitcoin	[1]	2,795,316	(33,494,962)
Net increase (decrease) in net assets resulting from operations	[1]	$ 2,672,031	$ (33,618,247)
Net increase (decrease) in net assets per Share	[1],[2],[3]	$ 0.23	$ (3.18)
Franklin Bitcoin ETF [Member]
Expenses:
Sponsor's fee	[1]	$ 192,723	$ 368,406
Less waiver and reimbursement	[1]	(69,438)	(245,121)
Total expenses	[1],[4]	123,285	123,285
Net investment loss	[1]	(123,285)	(123,285)
Net realized and change in unrealized gain (loss) on investment in bitcoin
Net realized gain (loss) from bitcoin sold for the redemption of shares and sold to pay expenses	[1]	(1,325,741)	(1,156,994)
Net change in unrealized appreciation (depreciation) on investment in bitcoin	[1]	4,121,057	(32,337,968)
Net realized and change in unrealized appreciation (depreciation) on investment in bitcoin	[1]	2,795,316	(33,494,962)
Net increase (decrease) in net assets resulting from operations	[1]	$ 2,672,031	$ (33,618,247)
Net increase (decrease) in net assets per Share	[1],[2],[3]	$ 0.23	$ (3.18)

[1] No comparative period presented as the Fund’s operations commenced on January 11, 2024.

[2] Net increase (decrease) in net assets per Share based on average shares outstanding during the period.

[3] 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.

[4] No comparative period presented as the Fund’s operations commenced on January 11, 2024. On December 15, 2023, prior to the commencement of the Fund’s operations, Franklin Resources, Inc., an affiliate of the Sponsor (the “Seed Capital Investor”) purchased 4,000 Shares at a per-Share price equal to $25.00 (the “Initial Seed Shares”). Delivery of the Initial Seed Shares was made on December 15, 2023. 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).