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Note 8 - Derivative Liability (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]
   
Level 1
   
Level 2
   
Level 3
   
Fair Value at
June 30, 2020
 
Liabilities:
                               
Derivative liability
  $
-
    $
-
    $
15,780
    $
15,780
 
   
Level 1
   
Level 2
   
Level 3
   
Fair Value at
December 31, 2019
 
Liabilities:
                               
Derivative liability
  $
-
    $
-
    $
65,289
    $
65,289
 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Balance at December 31, 2019
  $
65,289
 
Debt discount on convertible credit line payable
   
365
 
Gain on change in derivative fair value adjustment
   
(49,874
)
Balance at June 30, 2020
  $
15,780