Stock warrants (Tables)

9 Months Ended

12 Months Ended

Mar. 31, 2019

Jun. 30, 2018

Notes to Financial Statements

Schedule of Warrants Outstanding

As of March 31, 2019 and June 30, 2018, the total fair value of the warrant liability was $39,192 and $40,400, respectively.

The Binomial Option Price Model with the following assumption inputs:

Warrants liability	March 31, 2019
Annual dividend yield		—
Expected life (years)		0.5-5
Risk-free interest rate		2.23-2.82	%
Expected volatility		119-393	%
	June 30, 2018
Annual dividend yield		—
Expected life (years)		0.5
Risk-free interest rate		2.06	%
Expected volatility		151	%

Below is the movement of warrants for the period ending March 31, 2019:

	Number of  Shares		Weighted Average  Exercise Price		Weighted Average Remaining contractual life
Outstanding at June 30, 2016		131,250	$	0.20
Expired		131,250		0.20		4.00
Granted		505,000	$	0.15		3.86
Outstanding at June 30, 2017		505,000		0.20
Exercised		—		—
Granted		—	$	—
Outstanding at June 30, 2018		505,000	$	0.15		0.50
Granted		578,880		0.08		5.00
Exercised		—		—
Outstanding at March 31, 2019		1,083,880	$	0.15		0.50

The Binomial model with the following assumption inputs:

Warrants liability:	June 30, 2018
Annual dividend yield	—
Expected life (years)	0.5
Risk-free interest rate	2.06	%
Expected volatility	151	%
Warrants issued in May 2017:	June 30, 2017
Annual dividend yield	—
Expected life (years)	3.86
Risk-free interest rate	1.89	%
Expected volatility	440	%

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining contractual life
Outstanding at June 30, 2016		131,250		0.20
Expired		131,250		0.20
Granted		505,000	$	0.15		4
Outstanding at June 30, 2017		505,000	$	0.15		3.86
Expired
Granted
Outstanding at June 30, 2018		505,000	$	0.15		0.5