v3.26.1
Fair value measurements (Tables)
12 Months Ended
Jun. 30, 2026
Fair Value Disclosures [Abstract]  
Schedule of nonrecurring fair value measurement
               
Instrument  Measurement Date  Level 1  Level 2  Level 3  Total Fair Value
Convertible Promissory Note  April 1, 2026  $0   $0   $1,379,432   $1,379,432 
Schedule of significant unobservable inputs
      
Valuation Technique  Significant Input  Input
Probability-weighted risk-neutral lattice and expected-recovery model  Common-stock price  $0.045 per share
   Conversion price (probability-weighted)  $0.096 per share
   Expected volatility  200%
   Risk-free interest rate  4.0%
   Issuer credit spread  46.0%
   Recovery rate  10.0%
   Restricted-share discount  50.0%
Schedule of measurements
                     
Transaction and counterparty  Measurement date  Shares   Price per share   Fair value   Reference
Year ended June 30, 2026                     
Settlement of accounts payable — C. Marshall  October 1, 2025   500,000   $0.10   $50,000   Notes 8, 9
Settlement of accounts payable — C. Mulgrew  October 1, 2025   100,000   $0.10    10,000   Notes 8, 9
Settlement of accounts payable — C. Mulgrew  December 3, 2025   500,000   $0.10    50,000   Notes 8, 9
Settlement of loan payable — Eagle Equities, LLC  April 1, 2026   500,000   $0.045    22,500   Note 5
Advisory services — Checkmate Government Relations  June 3, 2026   200,000   $0.72    144,000   Note 9
Total, year ended June 30, 2026      1,800,000        $276,500    
                      
Year ended June 30, 2025                     
Rift intellectual property assignment  April 1, 2025   500,000   $0.10   $50,000   Note 6