STATEMENTS OF CHANGES IN NET ASSETS (UNAUDITED) - USD ($)			3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 01, 2021	Jul. 01, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
Increase in net assets from operations:
Net investment loss			$ (3,761,000)	$ (1,094,000)	$ (6,594,000)	$ (1,469,000)
Net realized gain on investments in digital assets	$ 14,980,028	$ 11,651,902	17,866,000	426,000	31,570,000	473,000
Net change in unrealized appreciation on investments in digital assets			15,486,000	146,286,000	103,728,000	154,146,000
Net increase in net assets resulting from operations			29,591,000	145,618,000	128,704,000	153,150,000
Increase in net assets from capital share transactions:
Shares issued			0	21,199,000	935,000	67,133,000
Net increase in net assets resulting from capital share transactions			0	21,199,000	935,000	67,133,000
Total increase in net assets from operations and capital share transactions			29,591,000	166,817,000	129,639,000	220,283,000
Net assets:
Beginning of period	$ 467,356,000	$ 367,308,000	467,356,000	85,840,000	367,308,000	32,374,000	$ 32,374,000
End of period			$ 496,947,000	$ 252,657,000	$ 496,947,000	$ 252,657,000	$ 367,308,000
Change in Shares outstanding:
Shares outstanding at beginning of period	15,867,400	15,837,800	15,867,400	13,170,200	15,837,800	6,029,000	6,029,000
Shares issued			0	2,222,600	29,600	9,363,800
Net increase in Shares			0	2,222,600	29,600	9,363,800
Shares outstanding at end of period			15,867,400	15,392,800	15,867,400	15,392,800	15,837,800