v3.26.1
Cover
6 Months Ended
Jun. 30, 2026
shares
Cover [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Quarterly Report true
Document Transition Report false
Document Period End Date Jun. 30, 2026
Document Fiscal Period Focus Q2
Document Fiscal Year Focus 2026
Current Fiscal Year End Date --12-31
Entity File Number 001-43024
Entity Registrant Name OSPREY BITCOIN TRUST
Entity Central Index Key 0001767057
Entity Tax Identification Number 37-6695894
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 777 Brickell Avenue
Entity Address, Address Line Two Suite 500
Entity Address, City or Town Miami
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33131
City Area Code (914)
Local Phone Number 214-4697
Title of 12(b) Security Shares of Beneficial Interest of Osprey Bitcoin Trust
Trading Symbol OBTC
Security Exchange Name NASDAQ
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 2,940,535