Stockholders' deficit (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Schedule of warrants outstanding

The warrants were valued using a Black Scholes pricing model on the date of grant at $1,477,163 using the following weighted average assumptions: 

	Year ended December 31, 2019
Calculated stock price		$0.05 to $0.09
Risk free interest rate		1.43% to 2.58%
Expected life of warrants		36 to 60 months
expected volatility of underlying stock		164.5% to 186.7%
Expected dividend rate		0	%

The volatility of the common stock is estimated using historical data of the Company’s common stock. The risk-free interest rate used in the Black Scholes pricing model is determined by reference to historical U.S. Treasury constant maturity rates with maturities approximate to the life of the warrants granted. An expected dividend yield of zero is used in the valuation model, because the Company does not expect to pay any cash dividends in the foreseeable future. As of December 31, 2019, the Company does not anticipate any awards will be forfeited in the valuation of the warrants.

A summary of all of the Company’s warrant activity during the period January 1, 2018 to December 31, 2019 is as follows: 

	No. of shares			Exercise price per  share		Weighted average exercise price
Outstanding January 1, 2018		49,504,075			$0.0033 to $0.10	$	0.0690
Granted		48,295,833			$0.10 to $0.12		0.1130
Forfeited/cancelled		(300,000	)		$0.0033		0.0033
Exercised		—			—		—
Outstanding December 31, 2018		97,499,908			$0.003 to $0.12	$	0.0910
Granted		27,700,652			$0.10 to $0.12		0.11773
Adjustment due to price protection		2,456,534,397			$0.00204		0.00204
Forfeited/cancelled		(15,633,709	)		0.03		0.030
Exercised		—			—		—
Outstanding December 31, 2019		2,566,101,248			$0.00204 to $0.12	$	0.00451

c) Warrants

The following table summarizes information about warrants outstanding at December 31, 2019:

	Warrants outstanding						Warrants exercisable
Exercise price	No. of shares		Weighted average remaining years		Weighted average  exercise price		No. of shares		Weighted average exercise price
$0.00204		2,507,793,382		3.18				2,507,793,382
$0.03		6,070,366		0.80				6,070,366
$0.12		52,237,500		1.89				52,237,500
		2,566,101,248		3.15	$	0.00451		2,566,101,248	$	0.00451