Quarterly Statements of Operations - Schedule of Quarterly Statements of Operations (Details) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended					5 Months Ended		12 Months Ended
	Sep. 30, 2024	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2024		Dec. 31, 2025
Expenses
Sponsor's Fee, related party	$ 491	$ 1,820	$ 1,996	$ 1,577	$ 1,398	$ 1,146	$ 1,637		$ 6,791
Net investment loss	(491)	(1,820)	(1,996)	(1,577)	(1,398)	(1,146)	(1,637)		(6,791)
Net realized and unrealized (loss) gain from:
Net realized (loss) gain on investment in Bitcoin sold to pay expenses	(35)	353	632	382	302	239	204		1,669
Net realized (loss) gain on investment in Bitcoin sold for redemption of shares	(3,289)	62,113	23,361	10,187	33,734	94,012	90,723		129,395
Net change in unrealized appreciation/depreciation on investment in Bitcoin	(31,309)	(1,353,065)	263,511	1,052,812	(524,750)	920,386	889,077	[1]	(561,492)
Net realized and unrealized (loss) gain on investment	(34,633)	(1,290,599)	287,504	1,063,381	(490,714)	1,014,637	980,004		(430,428)
Net (decrease) increase in net assets resulting from operations	$ (35,124)	$ (1,292,419)	$ 285,508	$ 1,061,804	$ (492,112)	$ 1,013,491	$ 978,367		$ (437,219)

[1] Prior to the commencement of operations on July 31, 2024, Grayscale Investments, LLC redeemed the initial seed capital of 10,000 shares for $100,000, as discussed in Note 1.