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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2025
Feb. 27, 2026
Jun. 30, 2025
Cover [Abstract]      
Entity Registrant Name BITWISE BITCOIN ETF    
Document Type 10-K    
Document Annual Report true    
Amendment Flag false    
Document Period End Date Dec. 31, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Document Financial Statement Error Correction [Flag] false    
Entity Central Index Key 0001763415    
Trading Symbol BITB    
Entity Filer Category Large Accelerated Filer    
Entity Well-known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Common Stock, Shares Outstanding   71,970,000  
Documents Incorporated by Reference [Text Block]

None.

    
Entity Public Float     $ 4,255,977,600
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
ICFR Auditor Attestation Flag true    
Entity File Number 001-41902    
Entity Tax Identification Number 83-6613214    
Entity Address, Address Line One 250 Montgomery Street    
Entity Address, Address Line Two Suite 200    
Entity Address, City or Town San Francisco    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94104    
City Area Code 415    
Local Phone Number 707-3663    
Document Transition Report false    
Entity Incorporation, State or Country Code DE    
Entity Interactive Data Current Yes    
Title of 12(b) Security Bitwise Bitcoin ETF Shares    
Security Exchange Name NYSEArca    
Auditor Firm ID 185    
Auditor Name KPMG LLP    
Auditor Location New York    
Auditor Opinion Opinion on the Financial Statements


We have audited the accompanying statements of assets and liabilities of Bitwise Bitcoin ETF (the Trust), including the schedules of investment as of December 31, 2025 and 2024, and the related statements of operations, changes in net assets, and cash flows for the year ended December 31, 2025 and for the period from January 10, 2024 (commencement of operations) through December 31, 2024, and the related notes (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Trust as of December 31, 2025 and 2024, and the results of its operations, changes in its net assets, and its cash flows for the year ended December 31, 2025, and for the period from January 10, 2024 (commencement of operations) through December 31, 2024, in conformity with U.S. generally accepted accounting principles.


We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Trust’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated March 2, 2026 expressed an unqualified opinion on the effectiveness of the Trust’s internal control over financial reporting.