STATEMENTS OF CHANGES IN NET ASSETS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2024
Increase (decrease) in net assets from operations:
Net investment loss	$ (1,027)	$ (447)	$ (1,809)	$ (880)
Net realized gain (loss) on investment in BCH	108	(263)	22	(544)	$ (450)
Net change in unrealized appreciation (depreciation) on investment in BCH	34,484	7,614	16,479	(12,301)	23,205
Net increase (decrease) in net assets resulting from operations	33,565	6,904	14,692	(13,725)
Increase in net assets from capital share transactions:
Shares issued	11,455	0	20,052	0
Net increase in net assets resulting from capital share transactions	11,455	0	20,052	0
Total increase (decrease) in net assets from operations and capital share transactions	45,020	6,904	34,744	(13,725)
Net assets:
Beginning of period	124,738	71,383	135,014	92,012	92,012
End of period	$ 169,758	$ 78,287	$ 169,758	$ 78,287	$ 135,014
Change in Shares outstanding:
Shares outstanding at beginning of period	43,140,000	34,812,900	40,366,000	34,812,900	34,812,900
Shares issued	3,066,300	0	5,840,300	0
Net increase in Shares	3,066,300	0	5,840,300	0
Shares outstanding at end of period	46,206,300	34,812,900	46,206,300	34,812,900	40,366,000