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Capital Stock (Tables)
6 Months Ended
Jun. 30, 2022
Class of Warrant or Right [Line Items]  
Summary of Changes in Warrants

The following table summarizes the changes in our warrants:

 

 

 

Six months ended

 

 

 

June 30, 2022

 

 

 

Number of

 

 

 

 

 

 

warrants (#)

 

 

Amount

 

Outstanding, December 31, 2021

 

 

5,264,959

 

 

$

6,957,974

 

Issued

 

 

37,337,039

 

 

 

18,714,297

 

Exercised

 

 

(1,988,617

)

 

 

(251,860

)

Expired

 

 

(692,462

)

 

 

(101,211

)

Outstanding, June 30, 2022

 

 

39,920,919

 

 

$

25,319,200

 

Summary of Fair Value of Warrants Issued Using Block-Scholes Option Pricing Model

The fair value of warrants issued were estimated using the Black-Scholes option pricing model and have the following inputs and assumptions:

 

 

 

Six months ended

 

 

 

June 30, 2022

 

Weighted average Grant date fair value

 

 

0.53

 

Weighted average expected volatility

 

89%

 

Weighted average risk-free interest rate

 

3.18%

 

Weighted average expected life of the warrants

 

 

5.00