Note 10 - Capital Stock, Warrants and Stock Options: Assumptions applied to fair value of the conversion feature (Tables)

6 Months Ended

Dec. 31, 2019

Fair Value

Assumptions applied to fair value of the conversion feature

August 2019 issuance	August 1, 2019	December 31, 2019
Expected life	731 days	579 days
Volatility	100%	100%
Risk free interest rate	1.59%	1.54%
Dividend yield	0%	0%
Share price	$0.09	$0.46
Fair value	$468,227	$7,420,026
Change in derivative liability		$(6,951,799)

Revalued

Assumptions applied to fair value of the conversion feature

December 2017 issuance	June 30, 2019	December 31, 2019
Expected life	532 days	348 days
Volatility	100%	100%
Risk free interest rate	1.66%	1.77%
Dividend yield	0%	0%
Share price	$0.05	$0.46
Fair value	$0	$0
Change in derivative liability		$0
August 2018 issuance	June 30, 2019	December 31, 2019
Expected life	771 days	587 days
Volatility	100%	100%
Risk free interest rate	1.59%	1.74%
Dividend yield	0%	0%
Share price	$0.05	$0.46
Fair value	$0	$5,545
Change in derivative liability		$(5,545)
November 2018 issuance	June 30, 2019	December 31, 2019
Expected life	882 days	698 days
Volatility	100%	100%
Risk free interest rate	1.47%	1.61%
Dividend yield	0%	0%
Share price	$0.05	$0.46
Fair value	$1,875	$121,336
Change in derivative liability		$(119,461)
June 2019 issuance	June 30, 2019	December 31, 2019
Expected life	727 days	545 days
Volatility	100%	100%
Risk free interest rate	1.47%	1.54%
Dividend yield	0%	0%
Share price	$0.05	$0.46
Fair value	$114,934	$3,690,747
Change in derivative liability		$(3,575,813)