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Note 18 – Warrants (Tables)
12 Months Ended
Apr. 30, 2024
Note 18 Warrants  
[custom:ScheduleOfWarrantsIssuedAndFairValueTableTextBlock]
                
   Upon Issuance  Outstanding at April 30, 2024
Date of Transaction  Number of Warrants  Initial Fair Value  Number of Warrants  Fair Value
 October 2020     399,998   $267,999    266,666   $209,938 
 January 2021    675,000   $2,870,666    540,000   $443,242 

Defined Benefit Plan, Assumptions [Table Text Block]
   2024  2023
Risk-free interest rate   4.25%      
Expected dividend yield            
Expected term (in years)   5.00    —   
Expected volatility   205.50%      
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   

 

Number of Shares 

 

 

Weighted-average Exercise Price per Share

 

 Weighted-average Remaining Contractual Term

(in years) 

 

 

Aggregate Intrinsic Value 

  Balance as of April 30, 2022 1,539,999     3.38        3.89     $ 427,533  
  Granted          $                  
  Exercised                          
  Outstanding as of April 30, 2023 1,539,999     3.38       2.89     $  
  Granted  736,000       0.63                  
  Exercised                        
  Outstanding at April 30, 2024 2,275,999    $ 2.49       2.77     $ 666,080