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Stockholders’ equity: (Details Narrative) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
May 12, 2021
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2015
Class of Warrant or Right [Line Items]                  
Common Stock value   $ 179,293       $ 179,293      
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.78       $ 0.78      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)           31,264      
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in CAD per share)           $ 0.62   $ 0.33  
Aggregate intrinsic value           $ 912,563   $ 137,250  
Share-based Payment Arrangement, Expense   $ 192,585   $ 9,849   269,606 $ 10,390    
2015 Stock Option Plan [Member]                  
Class of Warrant or Right [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value   $ 70,000       $ 70,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)   300,000 1,075,000     70,000   2,745,000  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in CAD per share) $ 0.53 $ 1.02     $ 0.33 $ 0.39      
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum                 10.00%
Share-based Payment Arrangement, Expense           $ 192,585      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)           $ 0.48 $ 0.26    
2015 Stock Option Plan [Member] | Share-based Payment Arrangement, Option [Member] | Monthly Vesting [Member]                  
Class of Warrant or Right [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage   2.00%              
2015 Stock Option Plan [Member] | Maximum [Member]                  
Class of Warrant or Right [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)                 10 years
Stock Option Plan 2015 One [Member]                  
Class of Warrant or Right [Line Items]                  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in CAD per share)           $ 0.45      
Stocks Option Plan 2015 [Member]                  
Class of Warrant or Right [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)   1,300,000              
Warrants Issued to RCC [Member]                  
Class of Warrant or Right [Line Items]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   230,000       230,000      
Warrants and Rights Outstanding, Term 24 months                
Canada Emergency Business Account Loan Program [Member] | 2015 Stock Option Plan [Member]                  
Class of Warrant or Right [Line Items]                  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in CAD per share) $ 0.66 $ 0.81       $ 0.50   $ 0.45  
Canada Emergency Business Account Loan Program [Member] | Stock Option Plan 2015 One [Member]                  
Class of Warrant or Right [Line Items]                  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in CAD per share)           0.54      
Canada Emergency Business Account Loan Program [Member] | Warrants Issued to RCC [Member]                  
Class of Warrant or Right [Line Items]                  
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.98       $ 0.98      
Research Capital Corporation [Member]                  
Class of Warrant or Right [Line Items]                  
[custom:TradingAdvisoryServicesMonthlyFee]           $ 5,162      
Research Capital Corporation [Member] | Canada Emergency Business Account Loan Program [Member]                  
Class of Warrant or Right [Line Items]                  
Stock Issued During Period, Shares, Issued for Services           6,500