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6. SHAREHOLDERS' EQUITY (Details Narrative) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Shareholders' equity    
Restricted common stock granted 4,744  
Fair value of restricted common stock granted $ 216,658  
Share-based compensation expense 325,518 $ 393,740
Unrecognized share-based compensation expense $ 1,361,968  
Unrecognized share-based compensation expense period for recognition 1 year 1 month 6 days