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8. Share-based payments (Details Narrative) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 21, 2017
Dec. 31, 2012
Common Stock issued for services, Value $ 139,529    
UPT management agreement [Member]        
Warrant exercise price $ 1.00      
Warrant exercise period 3 years      
Fair value of warrants $ 2,586,000      
Common stock warrants under the service condition vested     120,000  
Recognized expense     $ 6,118  
Legal Settlement Replacement Warrants [Member]        
Recorded expense $ 423,973      
Purchase of warrants       7,000,000
Description of all replacement warrants All of the replacement warrants have an exercise price of $0.25, while 6,000,000 expire in January 2017 and 1,000,000 expired in December 2015.      
Legal Settlement Replacement Warrants [Member] | Minimum [Member]        
Warrant exercise price       $ 0.35
Legal Settlement Replacement Warrants [Member] | Maximum [Member]        
Warrant exercise price       $ 0.75
Nonemployee common stock warrants -- Fully-vested upon issuance [Member]        
Common stock warrants maximum contractual term 5 years      
UPT management agreement [Member]        
Common Stock issued for services, Shares 2,600,000      
Common Stock issued for services, Value $ 130,000      
Nonemployee Common stock [Member]        
Common Stock issued for services, Shares   4,651,525    
Common Stock issued for services, Value   $ 364,530    
February 2016 [Member] | Spirit Bear Ltd [Member] | Settlement Agreement [Member]        
Reduction warrants exercise price from $0.25 to $0.10 per share.