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10. Stockholders' Equity: WarrantExpirations0TextBlock (Details) - shares
 9 Months Ended
Sep. 30, 2018
Jun. 30, 2018
Dec. 31, 2017
Dec. 31, 2016
Details        
Warrants issued 1,200,000      
Warrants issued, exercise price 0.10      
Warrants issued 2,137,500      
Warrants issued, exercise price 0.20      
Warrants issued 4,250,000      
Warrants issued, exercise price 0.20      
Warrants issued 1,708,334      
Warrants issued, exercise price 0.20      
Warrants issued 4,429,289      
Warrants issued, exercise price 0.22      
Class of Warrant or Right, Outstanding 13,725,123 13,725,123 9,295,834 10,737,500