Note 7 - Derivatives (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Derivative Liabilities at Fair Value [Table Text Block]

Derivative liability balance at December 31, 2019	$	50,989
Derivative instrument recognized for A, B and Agent Warrants		2,669,995
Derivative instrument related to Promissory Note 2020		120,921
Derivative instrument recognized for May 2020 Warrants		1,324,184
Derivative instrument recognized for June 2020 Warrants		1,749,721
Derivative instrument related to Promissory Note 2020		20,542
Reclassification of Warrant liabilities to Equity on exercise		(1,701,756	)
Reclassification of Warrant liabilities to Equity		(2,669,408	)
Derivative instrument related to September 30 debt amendments		495,100
Gain recognized to revalue derivative instrument at fair value		(1,765,906	)
Derivative liability balance at December 31, 2020	$	294,382
Gain recognized to revalue derivative instrument at fair value		(164,902	)
Derivative liability balance at December 31, 2021	$	129,480