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Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2019
Employee Stock Option [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of outstanding service-based options

   Number of 
   Options 
Balance at December 31, 2017   10,960,800 
Issued   3,400,000 
Expired   (550,000)
Exercised   (40,800)
      
Balance at December 31, 2018   13,820,000 
Issued   500,000 
Balance at March 31, 2019   14,320,000 
Schedule of Black-Scholes option-pricing model

Significant assumptions:    
Risk-free interest rate at grant date   2.38%
Expected stock price volatility   184.78%
Expected dividend payout   - 
Expected option life-years   6.5 years 
Weighted average grant date fair value  $0.15 
Forfeiture rate   0.01%
Schedule of outstanding service-based options

Exercise Price   Number of
Options
   Weighted Average
Remaining
Contractual Life
$0.20 - $0.25    8,620,000   3.9 years
$0.30 - $0.35    3,825,000   8.5 years
$0.40    1,875,000   4.7 years
 Total    14,320,000    
Warrant [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of outstanding and exercisable warrants

  

Number of

Shares

  

Weighted Average

Exercise Price

  

Year of

Expiration

 
             
Balance at December 31, 2017   3,089,119   $0.40    2018 - 2020 
Issued   (354,891)  $0.44    2018 
Exercised   2,491,305   $0.29    2023 - 2028 
Balance at December 31, 2018 and March 31, 2019   5,225,533   $0.35    2019 - 2028