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11. Equity: Common Stock Purchase Warrant Transactions (Details) - shares
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Details      
Class of Warrant or Right, Outstanding 5,975,027 12,900,123 14,100,123
Warrants Exercised   (1,200,000)  
Warrants issued 5,600,027    
Warrants Expired (10,816,789)    
Warrants excised (1,708,334)