Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Tables)

v3.19.1
Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2019
Fair Value Disclosures [Abstract]  
Assumptions used in fair value measurement of warrants
  Risk-free interest rate Expected life Volatility Dividend yield
September 2016 warrants 2.21% 2.50 years 230.000% 0%
March 2017 warrants 2.21% 3.50 years 238.947% 0%
March 6, 2018 warrants 2.23% 4.50 years 218.564% 0%
March 16, 2018 warrants 2.27% 2.00 years 266.095% 0%
August 2018 warrants 2.23% 5.00 years 213.512% 0%
Financial liabilities measure at fair value on a recurring basis
    Level 1   Level 2   Level 3   Total
Liabilities                                
Derivative liabilities   $ —       $ —       $ 82,374     $ 82,374