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4. COMMON STOCK (Details - Restricted Stock Activity) - Restricted Stock [Member] - $ / shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Number of Shares    
Restricted stock, beginning balance 4,640,000 4,960,000
Restricted stock granted 3,070,000 1,000,000
Restricted stock forfeited (275,000)  
Restricted stock vested (1,400,000) (1,320,000)
Restricted stock, ending balance 6,035,000 4,640,000
Weighted-Average Grant Date Fair Value    
Restricted stock beginning grant date price per share $ 0.20 $ 0.16
Restricted stock granted, price per share 1.78 0.42
Restricted stock vested, price per share 0.16 0.17
Restricted stock forfeited, price per share 0.18  
Restricted stock ending price per share $ 0.94 $ 0.20