Fair Value of Investments in Digital Assets - Changes in Quantity of Each Fund Component and Their Respective Fair Values (Details)													3 Months Ended								12 Months Ended
	Apr. 03, 2025 USD ($)	Jan. 04, 2025 USD ($)	Oct. 03, 2024 USD ($)	Jul. 03, 2024 USD ($)	Apr. 03, 2024 USD ($)	Jan. 04, 2024 USD ($)	Oct. 04, 2023 USD ($)	Jul. 06, 2023 USD ($)	Apr. 05, 2023 USD ($)	Jan. 05, 2023 USD ($)	Oct. 05, 2022 USD ($)	Jul. 07, 2022 USD ($)	Jun. 30, 2025 USD ($) Quantity	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($) Quantity	Jun. 30, 2024 USD ($) Quantity	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($) Quantity	Jun. 30, 2025 USD ($) Quantity	Jun. 30, 2024 USD ($) Quantity	Jun. 30, 2023 USD ($) Quantity
Summary Of Investment Holdings [Line Items]
Balance at Fair Value																$ 526,956,000					$ 526,956,000
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets													$ 173,693,000	$ (141,229,000)	$ 232,027,000	(20,358,000)	$ (70,306,000)	$ 225,325,000	$ 134,194,000	$ (32,520,000)	244,133,000	$ 256,693,000	$ 122,867,000
Fair value, net realized gain (loss) on investment	$ 1,247,808	$ 6,907,147	$ 339,366	$ 777,961	$ 8,236,118	$ 7,968,963	$ 149,939	$ 906,943	$ 227,762	$ (7,304,129)	$ 1,133,040	$ (14,895,069)	4,888,000	$ 10,530,000	$ 3,708,000	$ 3,140,000	(5,574,000)	$ 10,033,000	$ 1,343,000	$ 1,701,000	22,266,000	7,503,000	$ (18,714,000)
Balance at Fair Value end													$ 777,222,000				$ 526,956,000				$ 777,222,000	$ 526,956,000
Bitcoin
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																5,990.4948489				6,230.97866186	5,990.4948489	6,230.97866186	6,231.4365404
Quantity contributed | Quantity																					0	0	0
Quantity distributed from portfolio rebalancing | Quantity																					(86.13516106)	(87.42054382)
Quantity contributed from portfolio rebalancing | Quantity																							157.11106568
Quantity distributed for Manager's Fee, related party | Quantity																					(146.61647351)	(153.06326914)	(157.56894422)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																					0	0	0
Quantity, Net realized gain (loss) on investment | Quantity																					0	0	0
Quantity, Balance end | Quantity													5,757.74321433				5,990.4948489				5,757.74321433	5,990.4948489	6,230.97866186
Balance at Fair Value																$ 370,987,000				$ 189,185,000	$ 370,987,000	$ 189,185,000	$ 117,743,000
Fair Value, contributed																					0	0	0
Fair value, distributed from portfolio rebalancing																					(7,792,000)	(2,751,000)
Fair value, contributed from portfolio rebalancing																							3,049,000
Fair Value, distributed for Manager's Fee, related party																					(12,294,000)	(6,964,000)	(3,549,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																					252,302,000	180,523,000	69,386,000
Fair value, net realized gain (loss) on investment																					17,216,000	10,994,000	2,556,000
Balance at Fair Value end													$ 620,419,000				$ 370,987,000				$ 620,419,000	$ 370,987,000	$ 189,185,000
Ether
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																36,577.59452337				39,445.13266916	36,577.59452337	39,445.13266916	39,359.77040671
Quantity contributed | Quantity																					0	0	0
Quantity distributed from portfolio rebalancing | Quantity																					(677.32474886)	(1,925.59571086)
Quantity contributed from portfolio rebalancing | Quantity																							1,087.50823575
Quantity distributed for Manager's Fee, related party | Quantity																					(892.53888068)	(941.94243493)	(1,002.1459733)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																					0	0	0
Quantity, Net realized gain (loss) on investment | Quantity																					0	0	0
Quantity, Balance end | Quantity													35,007.73089383				36,577.59452337				35,007.73089383	36,577.59452337	39,445.13266916
Balance at Fair Value																$ 125,205,000				$ 75,964,000	$ 125,205,000	$ 75,964,000	$ 40,136,000
Fair Value, contributed																					0	0	0
Fair value, distributed from portfolio rebalancing																					(2,176,000)	(3,779,000)
Fair value, contributed from portfolio rebalancing																							1,095,000
Fair Value, distributed for Manager's Fee, related party																					(2,404,000)	(2,337,000)	(1,568,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																					(36,331,000)	50,085,000	34,695,000
Fair value, net realized gain (loss) on investment																					3,794,000	5,272,000	1,606,000
Balance at Fair Value end													$ 88,088,000				$ 125,205,000				$ 88,088,000	$ 125,205,000	$ 75,964,000
SOL
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																135,348.78720949				123,915.89529091	135,348.78720949	123,915.89529091	111,216.13265694
Quantity contributed | Quantity																					0	0	0
Quantity contributed from portfolio rebalancing | Quantity																					16,607.5500989	14,724.90144955	15,665.43529877
Quantity distributed for Manager's Fee, related party | Quantity																					(3,556.38124866)	(3,292.00953097)	(2,965.6726648)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																					0	0	0
Quantity, Net realized gain (loss) on investment | Quantity																					0	0	0
Quantity, Balance end | Quantity													148,399.95605973				135,348.78720949				148,399.95605973	135,348.78720949	123,915.89529091
Balance at Fair Value																$ 19,574,000				$ 2,366,000	$ 19,574,000	$ 2,366,000	$ 3,557,000
Fair Value, contributed																					0	0	0
Fair value, contributed from portfolio rebalancing																					2,425,000	1,274,000	384,000
Fair Value, distributed for Manager's Fee, related party																					(597,000)	(292,000)	(73,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																					1,849,000	16,330,000	(1,186,000)
Fair value, net realized gain (loss) on investment																					166,000	(104,000)	(316,000)
Balance at Fair Value end													$ 23,417,000				$ 19,574,000				$ 23,417,000	$ 19,574,000	$ 2,366,000
XRP
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																16,719,307.91934				0	16,719,307.91934	0
Quantity contributed | Quantity																					0	0
Quantity contributed from portfolio rebalancing | Quantity																					573,017.27619	16,922,626.498281
Quantity distributed for Manager's Fee, related party | Quantity																					(421,555.293104)	(203,318.578941)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																					0	0
Quantity, Net realized gain (loss) on investment | Quantity																					0	0
Quantity, Balance end | Quantity													16,870,769.902426				16,719,307.91934				16,870,769.902426	16,719,307.91934	0
Balance at Fair Value																$ 7,917,000				$ 0	$ 7,917,000	$ 0
Fair Value, contributed																					0	0
Fair value, contributed from portfolio rebalancing																					648,000	9,882,000
Fair Value, distributed for Manager's Fee, related party																					(695,000)	(111,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																					30,822,000	(1,847,000)
Fair value, net realized gain (loss) on investment																					448,000	(7,000)
Balance at Fair Value end													$ 39,140,000				$ 7,917,000				$ 39,140,000	$ 7,917,000	$ 0
ADA
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																0				11,194,902.551275	0	11,194,902.551275	10,916,582.900254
Quantity contributed | Quantity																					0	0	0
Quantity distributed from portfolio rebalancing | Quantity																					10,568,299.628398	(10,984,888.769029)
Quantity contributed from portfolio rebalancing | Quantity																							559,615.581934
Quantity distributed for Manager's Fee, related party | Quantity																					(127,897.376884)	(210,013.782246)	(281,295.930913)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																					0	0	0
Quantity, Net realized gain (loss) on investment | Quantity																					0	0	0
Quantity, Balance end | Quantity													10,440,402.251514				0				10,440,402.251514	0	11,194,902.551275
Balance at Fair Value																$ 0				$ 3,195,000	$ 0	$ 3,195,000	$ 4,803,000
Fair Value, contributed																					0	0	0
Fair value, distributed from portfolio rebalancing																					11,727,000	(6,478,000)
Fair value, contributed from portfolio rebalancing																							231,000
Fair Value, distributed for Manager's Fee, related party																					(96,000)	(89,000)	(108,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																					(5,523,000)	12,051,000	(1,401,000)
Fair value, net realized gain (loss) on investment																					50,000	(8,679,000)	(330,000)
Balance at Fair Value end													$ 6,158,000				$ 0				$ 6,158,000	$ 0	$ 3,195,000
MATIC
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																0				2,926,029.61320324	0	2,926,029.61320324	0
Quantity contributed | Quantity																						0	0
Quantity distributed from portfolio rebalancing | Quantity																						(2,887,850.26244458)
Quantity contributed from portfolio rebalancing | Quantity																							2,979,195.2072644
Quantity distributed for Manager's Fee, related party | Quantity																						(38,179.35075866)	(53,165.59406116)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																						0	0
Quantity, Net realized gain (loss) on investment | Quantity																						0	0
Quantity, Balance end | Quantity																	0					0	2,926,029.61320324
Balance at Fair Value																$ 0				$ 1,922,000	$ 0	$ 1,922,000	$ 0
Fair Value, contributed																						0	0
Fair value, distributed from portfolio rebalancing																						(2,486,000)
Fair value, contributed from portfolio rebalancing																							2,524,000
Fair Value, distributed for Manager's Fee, related party																						(26,000)	(51,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																						565,000	(565,000)
Fair value, net realized gain (loss) on investment																						25,000	14,000
Balance at Fair Value end																	$ 0					$ 0	$ 1,922,000
DOT
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																				0		0	328,187.49357863
Quantity contributed | Quantity																							0
Quantity distributed from portfolio rebalancing | Quantity																							(328,052.64509826)
Quantity distributed for Manager's Fee, related party | Quantity																							(134.84848037)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																							0
Quantity, Net realized gain (loss) on investment | Quantity																							0
Quantity, Balance end | Quantity																							0
Balance at Fair Value																				$ 0		$ 0	$ 2,235,000
Fair Value, contributed																							0
Fair value, distributed from portfolio rebalancing																							(2,247,000)
Fair Value, distributed for Manager's Fee, related party																							(1,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																							5,103,000
Fair value, net realized gain (loss) on investment																							(5,090,000)
Balance at Fair Value end																							$ 0
AVAX
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																114,955.6647938				0	114,955.6647938	0	88,973.97836461
Quantity contributed | Quantity																					0	0	0
Quantity distributed from portfolio rebalancing | Quantity																					(113,418.90243682)		(87,745.50702693)
Quantity contributed from portfolio rebalancing | Quantity																						116,340.93500452
Quantity distributed for Manager's Fee, related party | Quantity																					(1,536.76235698)	(1,385.27021072)	(1,228.47133768)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																					0	0	0
Quantity, Net realized gain (loss) on investment | Quantity																					0	0	0
Quantity, Balance end | Quantity													0				114,955.6647938				0	114,955.6647938	0
Balance at Fair Value																$ 3,273,000				$ 0	$ 3,273,000	$ 0	$ 1,445,000
Fair Value, contributed																					0	0	0
Fair value, distributed from portfolio rebalancing																					(4,832,000)		(974,000)
Fair value, contributed from portfolio rebalancing																						4,338,000
Fair Value, distributed for Manager's Fee, related party																					(47,000)	(53,000)	(21,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																					1,014,000	(1,014,000)	6,936,000
Fair value, net realized gain (loss) on investment																					592,000	2,000	(7,386,000)
Balance at Fair Value end													$ 0				$ 3,273,000				$ 0	$ 3,273,000	$ 0
LTC
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																				0		0	23,725.08718334
Quantity contributed | Quantity																							0
Quantity distributed from portfolio rebalancing | Quantity																							(23,715.33881688)
Quantity distributed for Manager's Fee, related party | Quantity																							(9.74836646)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																							0
Quantity, Net realized gain (loss) on investment | Quantity																							0
Quantity, Balance end | Quantity																							0
Balance at Fair Value																				$ 0		$ 0	$ 1,220,000
Fair Value, contributed																							0
Fair value, distributed from portfolio rebalancing																							(1,177,000)
Fair Value, distributed for Manager's Fee, related party																							(1,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																							574,000
Fair value, net realized gain (loss) on investment																							(616,000)
Balance at Fair Value end																							$ 0
UNI
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																				0		0	232,687.02308212
Quantity contributed | Quantity																							0
Quantity distributed from portfolio rebalancing | Quantity																							(232,591.41465073)
Quantity distributed for Manager's Fee, related party | Quantity																							(95.60843139)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																							0
Quantity, Net realized gain (loss) on investment | Quantity																							0
Quantity, Balance end | Quantity																							0
Balance at Fair Value																				$ 0		$ 0	$ 1,122,000
Fair Value, contributed																							0
Fair value, distributed from portfolio rebalancing																							(1,236,000)
Fair Value, distributed for Manager's Fee, related party																							0
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																							3,937,000
Fair value, net realized gain (loss) on investment																							(3,823,000)
Balance at Fair Value end																							$ 0
LINK
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																				0		0	158,987.59087114
Quantity contributed | Quantity																							0
Quantity distributed from portfolio rebalancing | Quantity																							(158,922.26469191)
Quantity distributed for Manager's Fee, related party | Quantity																							(65.32617923)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																							0
Quantity, Net realized gain (loss) on investment | Quantity																							0
Quantity, Balance end | Quantity																							0
Balance at Fair Value																				$ 0		$ 0	$ 960,000
Fair Value, contributed																							0
Fair value, distributed from portfolio rebalancing																							(989,000)
Fair Value, distributed for Manager's Fee, related party																							(1,000)
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																							3,726,000
Fair value, net realized gain (loss) on investment																							(3,696,000)
Balance at Fair Value end																							$ 0
BCH
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity																				0		0	6,314.20828653
Quantity contributed | Quantity																							0
Quantity distributed from portfolio rebalancing | Quantity																							(6,311.6138507)
Quantity distributed for Manager's Fee, related party | Quantity																							(2.59443583)
Quantity net change in unrealized appreciation (depreciation) on investment | Quantity																							0
Quantity, Net realized gain (loss) on investment | Quantity																							0
Quantity, Balance end | Quantity																							0
Balance at Fair Value																				$ 0		$ 0	$ 631,000
Fair Value, contributed																							0
Fair value, distributed from portfolio rebalancing																							(660,000)
Fair Value, distributed for Manager's Fee, related party																							0
Fair value, net change in unrealized appreciation (depreciation) on investments in digital assets																							1,662,000
Fair value, net realized gain (loss) on investment																							(1,633,000)
Balance at Fair Value end																							$ 0