v3.26.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2025
Jun. 30, 2025
Document Information [Line Items]    
Document Type 10-K  
Document Annual Report true  
Document Transition Report false  
Document Financial Statement Error Correction [Flag] false  
Entity Interactive Data Current Yes  
ICFR Auditor Attestation Flag false  
Amendment Flag false  
Document Period End Date Dec. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus FY  
Documents Incorporated by Reference [Text Block] None  
Entity Information [Line Items]    
Entity Registrant Name HASHDEX NASDAQ CME CRYPTO INDEX ETF  
Entity Central Index Key 0002031069  
Entity File Number 001-42511  
Entity Tax Identification Number 33-2103856  
Entity Incorporation, State or Country Code DE  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Public Float   $ 16,145,730.87
Entity Addresses [Line Items]    
Entity Address, Address Line One 19 West 44th Street  
Entity Address, Address Line Two Suite 200  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10036  
Entity Phone Fax Numbers [Line Items]    
City Area Code (866)  
Local Phone Number 403-5272  
Entity Listings [Line Items]    
Title of 12(b) Security Shares of Beneficial Interest of Hashdex Nasdaq CME Crypto Index ETF  
Trading Symbol NCIQ  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding 5,340,000