v3.26.1
Note 2 - Convertible Notes Payable (Tables)
12 Months Ended
Mar. 31, 2026
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
  

Warrants

  

Weighted-Average Exercise Price Per Share

  

Remaining Life (In Years)

  

Aggregate Intrinsic Value*

 
                 

Outstanding and exercisable, March 31, 2024

  25,003  $20.00   4.48  $1,010,000 
                 

Outstanding and exercisable, March 31, 2025

  25,003  $20.00   3.48  $ 
                 

Outstanding and exercisable, March 31, 2026

  25,003  $20.00   2.48  $