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Subsequent events - Strategic asset acquisition (Details) item in Millions	Jul. 21, 2025 item
Subsequent Events
Subsequent events
Number of purchased tokens in DOGE	40.5

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- Definition

Number of DOGE tokens (crypto asset) purchased during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	btog_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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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

+ Details

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Period Type:	duration

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- Details

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Namespace Prefix:
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Period Type: