Note 2 - Significant Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	June 30, 2021		June 30, 2020
Warrants		21,931,903		20,378,513
Options		10,471,600		9,511,600
Convertible debt		10,183,558		10,285,241
Convertible preferred stock		20,000		19,000

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Year ended June 30, 2021			Year ended June 30, 2020
Shares issued – beginning of period		31,409,005			28,068,688
Shares held by subsidiaries (Note 7)		(704,309	)		(704,309	)
Shares outstanding – beginning of period		30,704,696			27,364,379
Weighted average shares issued during the period		2,364,136			1,666,727
Diluted weighted average shares – end of period		33,068,832			29,031,106