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Subsequent Events - Additional Information (Details)	Oct. 31, 2025 $ / shares	Nov. 03, 2025 shares	Sep. 30, 2025 $ / shares	Jun. 30, 2025 $ / shares
Subsequent Event [Line Items]
Subsequent event, date	Oct. 31, 2025
Bitcoin
Subsequent Event [Line Items]
Fair value of investments per share | $ / shares	$ 109,777		$ 114,401.99	$ 107,753.95
Ether
Subsequent Event [Line Items]
Fair value of investments per share | $ / shares	3,884.4		4,161.61	2,516.23
XRP
Subsequent Event [Line Items]
Fair value of investments per share | $ / shares	2.54		2.86	2.32
SOL
Subsequent Event [Line Items]
Fair value of investments per share | $ / shares	188.31		208.92	157.8
ADA
Subsequent Event [Line Items]
Fair value of investments per share | $ / shares	$ 0.61		$ 0.8	$ 0.59
Subsequent Event | Bitcoin
Subsequent Event [Line Items]
Percentage of fund components basket		75.75%
Funds Portfolio Share Equivalent | shares		0.0004
Subsequent Event | Ether
Subsequent Event [Line Items]
Percentage of fund components basket		15.42%
Funds Portfolio Share Equivalent | shares		0.0022
Subsequent Event | XRP
Subsequent Event [Line Items]
Percentage of fund components basket		4.90%
Funds Portfolio Share Equivalent | shares		1.0833
Subsequent Event | SOL
Subsequent Event [Line Items]
Percentage of fund components basket		3.22%
Funds Portfolio Share Equivalent | shares		0.0099
Subsequent Event | ADA
Subsequent Event [Line Items]
Percentage of fund components basket		0.71%
Funds Portfolio Share Equivalent | shares		0.6593

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- Definition

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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- Definition

Date the event occurred after the balance sheet date but before financial statements are issues or available to be issued, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-SubTopic 10
-Topic 855
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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