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. 05, 2022 USD ($)	Oct. 01, 2021 USD ($)	Jul. 01, 2021 USD ($) Quantity	Apr. 02, 2021 USD ($)	Jan. 04, 2021 USD ($)	Jun. 30, 2022 USD ($) Quantity	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($) Quantity	Jun. 30, 2021 USD ($) Quantity	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($) Quantity	Jun. 30, 2022 USD ($) Quantity	Jun. 30, 2021 USD ($) Quantity	Jun. 30, 2020 USD ($) Quantity
Summary Of Investment Holdings [Line Items]
Balance at Fair Value			$ 367,308,000						$ 367,308,000					$ 367,308,000
Net change in unrealized (depreciation) appreciation on investments						$ (306,547,000)	$ (27,207,000)	$ 15,486,000	88,242,000	$ (169,378,000)	$ 271,256,000	$ 146,286,000	$ 7,860,000	(230,026,000)	$ 256,024,000	$ (3,539,000)
Realized Investment Gains (Losses)	$ 12,437,503	$ 14,980,028	$ 11,651,902	$ 4,398,884	$ (1,754,085)	13,507,000	$ 1,772,000	$ 17,866,000	$ 13,704,000	6,668,000	$ 152,000	$ 426,000	$ 47,000	46,849,000	7,293,000	$ (147,000)
Balance at Fair Value end						$ 173,852,000				$ 367,308,000				$ 173,852,000	$ 367,308,000
BTC
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			7,340.02142854						7,340.02142854				2,890.95335771	7,340.02142854	2,890.95335771	1,545.00887000
Quantity contributed | Quantity														13.24337963	4,668.87490748	1,423.77956922
Quantity distributed from portfolio rebalancing | Quantity														(955.65065367)	(49.26609880)
Quantity distributed for Manager's Fee, related party | Quantity														166.17761410	170.54073785	77.83508151
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0	0	0
Quantity, Net realized gain (loss) on investment | Quantity														0	0	0
Quantity, Balance end | Quantity						6,231.43654040				7,340.02142854				6,231.43654040	7,340.02142854	2,890.95335771
Balance at Fair Value			$ 255,175,000						$ 255,175,000				$ 26,406,000	$ 255,175,000	$ 26,406,000	$ 17,363,000
Fair Value, contributed														612,000	61,878,000	11,195,000
Fair value, distributed from portfolio rebalancing														(40,252,000)	(4,018,000)
Fair Value, distributed for Manager's Fee, related party														7,160,000	5,373,000	662,000
Net change in unrealized (depreciation) appreciation on investments														(125,363,000)	168,230,000	(1,559,000)
Realized Investment Gains (Losses)														34,731,000	8,052,000	69,000
Balance at Fair Value end						$ 117,743,000				$ 255,175,000				$ 117,743,000	$ 255,175,000	$ 26,406,000
ETH
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			45,287.78133655						45,287.78133655				16,713.06457809	45,287.78133655	16,713.06457809	8,931.94399617
Quantity contributed | Quantity														77.55708625	27,048.35623477	8,231.09766296
Quantity distributed from portfolio rebalancing | Quantity														(4,990.48482039)
Quantity contributed from portfolio rebalancing | Quantity															2,541.65341845
Quantity distributed for Manager's Fee, related party | Quantity														1,015.08319570	1,015.29289476	449.97708104
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0	0	0
Quantity, Net realized gain (loss) on investment | Quantity														0	0	0
Quantity, Balance end | Quantity						39,359.77040671				45,287.78133655				39,359.77040671	45,287.78133655	16,713.06457809
Balance at Fair Value			$ 101,625,000						$ 101,625,000				$ 3,760,000	$ 101,625,000	$ 3,760,000	$ 2,692,000
Fair Value, contributed														252,000	11,956,000	1,486,000
Fair value, distributed from portfolio rebalancing														(12,204,000)
Fair value, contributed from portfolio rebalancing															2,993,000
Fair Value, distributed for Manager's Fee, related party														3,080,000	1,362,000	87,000
Net change in unrealized (depreciation) appreciation on investments														(59,012,000)	83,519,000	(216,000)
Realized Investment Gains (Losses)														12,555,000	759,000	(115,000)
Balance at Fair Value end						$ 40,136,000				$ 101,625,000				$ 40,136,000	$ 101,625,000	$ 3,760,000
ADA
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			0						0					0
Quantity contributed | Quantity														20,953.270382
Quantity contributed from portfolio rebalancing | Quantity														11,178,490.637538
Quantity distributed for Manager's Fee, related party | Quantity														282,861.007666
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0
Quantity, Net realized gain (loss) on investment | Quantity														0
Quantity, Balance end | Quantity						10,916,582.900254				0				10,916,582.900254	0
Balance at Fair Value			$ 0						$ 0					$ 0
Fair Value, contributed														46,000
Fair value, contributed from portfolio rebalancing														15,389,000
Fair Value, distributed for Manager's Fee, related party														392,000
Net change in unrealized (depreciation) appreciation on investments														(10,650,000)
Realized Investment Gains (Losses)														410,000
Balance at Fair Value end						$ 4,803,000				$ 0				$ 4,803,000	$ 0
SOL
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			0						0					0
Quantity contributed | Quantity														0
Quantity contributed from portfolio rebalancing | Quantity														113,222.94565799
Quantity distributed for Manager's Fee, related party | Quantity														2,006.81300105
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0
Quantity, Net realized gain (loss) on investment | Quantity														0
Quantity, Balance end | Quantity						111,216.13265694				0				111,216.13265694	0
Balance at Fair Value			$ 0						$ 0					$ 0
Fair Value, contributed														0
Fair value, contributed from portfolio rebalancing														15,869,000
Fair Value, distributed for Manager's Fee, related party														246,000
Net change in unrealized (depreciation) appreciation on investments														(11,864,000)
Realized Investment Gains (Losses)														(202,000)
Balance at Fair Value end						$ 3,557,000				$ 0				$ 3,557,000	$ 0
DOT
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			0						0					0
Quantity contributed | Quantity														0
Quantity contributed from portfolio rebalancing | Quantity														330,149.03708006
Quantity distributed for Manager's Fee, related party | Quantity														1,961.54350143
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0
Quantity, Net realized gain (loss) on investment | Quantity														0
Quantity, Balance end | Quantity						328,187.49357863				0				328,187.49357863	0
Balance at Fair Value			$ 0						$ 0					$ 0
Fair Value, contributed														0
Fair value, contributed from portfolio rebalancing														7,576,000
Fair Value, distributed for Manager's Fee, related party														24,000
Net change in unrealized (depreciation) appreciation on investments														(5,103,000)
Realized Investment Gains (Losses)														(214,000)
Balance at Fair Value end						$ 2,235,000				$ 0				$ 2,235,000	$ 0
AVAX
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			0						0					0
Quantity contributed | Quantity														0
Quantity contributed from portfolio rebalancing | Quantity														89,505.76684675
Quantity distributed for Manager's Fee, related party | Quantity														531.78848214
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0
Quantity, Net realized gain (loss) on investment | Quantity														0
Quantity, Balance end | Quantity						88,973.97836461				0				88,973.97836461	0
Balance at Fair Value			$ 0						$ 0					$ 0
Fair Value, contributed														0
Fair value, contributed from portfolio rebalancing														8,665,000
Fair Value, distributed for Manager's Fee, related party														23,000
Net change in unrealized (depreciation) appreciation on investments														(6,936,000)
Realized Investment Gains (Losses)														(261,000)
Balance at Fair Value end						$ 1,445,000				$ 0				$ 1,445,000	$ 0
LTC
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			26,184.80079374						26,184.80079374				9,446.46857963	26,184.80079374	9,446.46857963	5,048.46535792
Quantity contributed | Quantity														47.39510812	15,310.38020958	4,652.33684958
Quantity distributed from portfolio rebalancing | Quantity														(1,901.21497737)
Quantity contributed from portfolio rebalancing | Quantity															2,010.23222215
Quantity distributed for Manager's Fee, related party | Quantity														605.89374115	582.28021762	254.33362787
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0	0	0
Quantity, Net realized gain (loss) on investment | Quantity														0	0	0
Quantity, Balance end | Quantity						23,725.08718334				26,184.80079374				23,725.08718334	26,184.80079374	9,446.46857963
Balance at Fair Value			$ 3,707,000						$ 3,707,000				$ 388,000	$ 3,707,000	$ 388,000	$ 652,000
Fair Value, contributed														9,000	908,000	241,000
Fair value, distributed from portfolio rebalancing														(281,000)
Fair value, contributed from portfolio rebalancing															309,000
Fair Value, distributed for Manager's Fee, related party														83,000	81,000	16,000
Net change in unrealized (depreciation) appreciation on investments														(2,315,000)	2,142,000	(480,000)
Realized Investment Gains (Losses)														183,000	41,000	(9,000)
Balance at Fair Value end						$ 1,220,000				$ 3,707,000				$ 1,220,000	$ 3,707,000	$ 388,000
UNI
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			0						0					0
Quantity contributed | Quantity														0
Quantity contributed from portfolio rebalancing | Quantity														236,778.41720026
Quantity distributed for Manager's Fee, related party | Quantity														4,091.39411814
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0
Quantity, Net realized gain (loss) on investment | Quantity														0
Quantity, Balance end | Quantity						232,687.02308212				0				232,687.02308212	0
Balance at Fair Value			$ 0						$ 0					$ 0
Fair Value, contributed														0
Fair value, contributed from portfolio rebalancing														5,483,000
Fair Value, distributed for Manager's Fee, related party														54,000
Net change in unrealized (depreciation) appreciation on investments														(3,937,000)
Realized Investment Gains (Losses)														(370,000)
Balance at Fair Value end						$ 1,122,000				$ 0				$ 1,122,000	$ 0
LINK
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			153,327.61595468						153,327.61595468				0	153,327.61595468	0
Quantity contributed | Quantity														310.46132900	253.44138473
Quantity contributed from portfolio rebalancing | Quantity														9,391.16255779	154,021.49829970
Quantity distributed for Manager's Fee, related party | Quantity														4,041.64897033	947.32372975
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0	0
Quantity, Net realized gain (loss) on investment | Quantity														0	0
Quantity, Balance end | Quantity						158,987.59087114				153,327.61595468				158,987.59087114	153,327.61595468	0
Balance at Fair Value			$ 2,956,000						$ 2,956,000				$ 0	$ 2,956,000	$ 0
Fair Value, contributed														8,000	9,000
Fair value, contributed from portfolio rebalancing														143,000	4,622,000
Fair Value, distributed for Manager's Fee, related party														78,000	30,000
Net change in unrealized (depreciation) appreciation on investments														(2,016,000)	(1,709,000)
Realized Investment Gains (Losses)														(53,000)	64,000
Balance at Fair Value end						$ 960,000				$ 2,956,000				$ 960,000	$ 2,956,000	$ 0
BCH
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			7,379.46217362						7,379.46217362				2,908.94301800	7,379.46217362	2,908.94301800	1,576.36869934
Quantity contributed | Quantity														13.60904594	4,696.88194985	1,432.63933393
Quantity distributed from portfolio rebalancing | Quantity														(906.97968581)	(55.03257309)
Quantity distributed for Manager's Fee, related party | Quantity														171.88324722	171.33022114	100.06501527
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity														0	0	0
Quantity, Net realized gain (loss) on investment | Quantity														0	0	0
Quantity, Balance end | Quantity						6,314.20828653				7,379.46217362				6,314.20828653	7,379.46217362	2,908.94301800
Balance at Fair Value			$ 3,845,000						$ 3,845,000				$ 643,000	$ 3,845,000	$ 643,000	$ 652,000
Fair Value, contributed														8,000	1,185,000	346,000
Fair value, distributed from portfolio rebalancing														(388,000)	(31,000)
Fair Value, distributed for Manager's Fee, related party														74,000	81,000	27,000
Net change in unrealized (depreciation) appreciation on investments														(2,830,000)	2,102,000	(284,000)
Realized Investment Gains (Losses)														70,000	27,000	(44,000)
Balance at Fair Value end						$ 631,000				$ 3,845,000				$ 631,000	$ 3,845,000	$ 643,000
XRP
Summary Of Investment Holdings [Line Items]
Quantity, Balance | Quantity			0						0				6,697,006.68459600	0	6,697,006.68459600	3,579,073.61054800
Quantity contributed | Quantity															10,327,653.14534000	3,298,241.09008900
Quantity distributed from portfolio rebalancing | Quantity															(16,838,197.64668600)
Quantity distributed for Manager's Fee, related party | Quantity															186,462.18325000	180,308.01604100
Quantity net change in unrealized (depreciation) appreciation on investment | Quantity															0	0
Quantity, Net realized gain (loss) on investment | Quantity															0	0
Quantity, Balance end | Quantity										0					0	6,697,006.68459600
Balance at Fair Value			$ 0						$ 0				$ 1,177,000	$ 0	$ 1,177,000	$ 1,440,000
Fair Value, contributed															2,668,000	831,000
Fair value, distributed from portfolio rebalancing															(3,875,000)
Fair Value, distributed for Manager's Fee, related party															60,000	46,000
Net change in unrealized (depreciation) appreciation on investments															1,740,000	(1,000,000)
Realized Investment Gains (Losses)															(1,650,000)	(48,000)
Balance at Fair Value end										$ 0					$ 0	$ 1,177,000