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Derivative liability (Tables)
12 Months Ended
Dec. 31, 2018
Derivative Liablility Tables  
Schedule of assumption used in Black Scholes

The following assumptions were used in the Black-Scholes valuation model: 

 

    Year ended
December 31,
2018
     
Calculated stock price     $0.024 to $0.10  
Risk free interest rate     1.60% to 3.05%  
Expected life of convertible notes and warrants     1 month to 5 years  
expected volatility of underlying stock     105.24% to 219.40%  
Expected dividend rate     0 %
Schedule of derivative liability

The movement in derivative liability is as follows: 

 

    December 31,
2018
  December 31,
2017
         
Opening balance   $ 2,859,832     $ —    
Derivative liability on convertible notes and variable priced warrants     1,335,709       1,826,500  
Fair value adjustments to derivative liability     422,539       1,033,332  
                 
Closing balance   $ 4,618,080     $ 2,859,832