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Note 1 - Nature of Business and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Years ended
  
   
December 31, 2020
    
December 31, 2019
  
                 
Basic net loss
   $
(1,986,978
 )   $
(432,937
 )
Add back: Gain on change in fair value of derivative liabilities
    
-
      
(492,198
 )
Diluted net loss
   $
(1,986,978
 )   $
(925,135
 )
                 
Basic and dilutive shares:
                
Weighted average basic shares outstanding
    
17,966,907
      
17,594,220
  
Shares issuable from convertible credit line payable
    
-
      
130,578
  
Dilutive shares
    
17,966,907
      
17,724,798
  
                 
Loss per share:
                
Basic
   $
(0.11
 )   $
(0.02
 )
Diluted
   $
(0.11
 )   $
(0.05
 )