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v3.25.4

Creation and Redemption of Shares - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2025 shares
Equity [Abstract] |
Number of shares in block issued | 10,000

X
- Definition Number of shares in block issued. + References No definition available. + Details
Name: | bitb_NumberOfSharesInBlockIssued
Namespace Prefix: | bitb_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration