v3.25.2
Cover - USD ($)
12 Months Ended
Jun. 30, 2025
Sep. 04, 2025
Dec. 31, 2024
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Period End Date Jun. 30, 2025    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2024    
Current Fiscal Year End Date --06-30    
Entity File Number 000-56340    
Entity Registrant Name C2 Blockchain, Inc.    
Entity Central Index Key 0001882781    
Entity Tax Identification Number 87-2645378    
Entity Incorporation, State or Country Code NV    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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 Public Float     $ 274,018
Shares, Outstanding   379,236,005  
Preferred Stock, Shares Issued 0 0  
Auditor Name MICHAEL GILLESPIE & ASSOCIATES, PLLC    
Auditor Firm ID 6108    
Auditor Location Vancouver, Washington