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NOTES PAYABLE - Assumptions used to calculate fair value of 15% Warrants (Details) - Jun. 30, 2020 - 15% Warrants
Y
item
Current stock price | Minimum    
NOTES PAYABLE    
Measurement input used to calculate fair value of warrants   0.45
Current stock price | Maximum    
NOTES PAYABLE    
Measurement input used to calculate fair value of warrants   0.67
Exercise price    
NOTES PAYABLE    
Measurement input used to calculate fair value of warrants   0.45
Risk-free interest rate | Minimum    
NOTES PAYABLE    
Measurement input used to calculate fair value of warrants   0.0068
Risk-free interest rate | Maximum    
NOTES PAYABLE    
Measurement input used to calculate fair value of warrants   0.0162
Expected dividend yield    
NOTES PAYABLE    
Measurement input used to calculate fair value of warrants  
Expected term (in years) | Minimum    
NOTES PAYABLE    
Measurement input used to calculate fair value of warrants | Y 0.84  
Expected volatility | Minimum    
NOTES PAYABLE    
Measurement input used to calculate fair value of warrants   1.12
Expected volatility | Maximum    
NOTES PAYABLE    
Measurement input used to calculate fair value of warrants 3.06 1.19