Note 6 - Convertible Notes Payable | The following table summarizes outstanding convertible notes as of March 31, 2020 and December 31, 2019: March 31, 2020 December 31, 2019 2017 Notes, maturing December 2020, currently past due $ 15,000 $ 15,000 June 2019 Notes, maturing March 25, 2020, currently past due 448,888 2,018,889 December 2019 Notes, maturing June 10, 2020 560,000 560,000 Total 1,023,889 2,593,889 Less: Debt discount and deferred finance costs on short-term convertible notes (120,889 ) (1,525,906 ) Less: Current convertible notes payable, net of discount (903,000 ) (1,067,983 ) Total long-term convertible notes payable, net $ - $ - In June and July 2019, the Company issued convertible notes to 10 investors with a principal amount of $2,388,889, receiving $1,583,333 in net cash proceeds (the “June 2019 Notes”). The June 2019 Notes had an original issue discount of $238,889, and the Company incurred an interest charge deducted from the gross proceeds of $358,333, based on a 15% stated rate. The total of $597,222 was recorded as debt discount. Additionally, the Company paid $132,848 of financing costs, which were recorded as a reduction of the carrying value of the debt. The deferred financing costs and debt discounts are being amortized using the effective interest method through the maturity of the June 2019 Notes. The June 2019 Notes matured on March 25, 2020 and are convertible into the Company’s common stock at a per share price of $0.35 at any time subsequent to the issuance date. The June 2019 Notes contain a down round feature, whereby any sale of common stock or common stock equivalent at a price per share lower than the conversion price of the June 2019 Notes will result in the conversion price being lowered to the new price. The warrants contain the same down round feature as the notes. As a result of a dilutive issuance during the three months ended March 31, 2020, the exercise price of the remaining notes payable and the warrants is currently $0.20 per share. The convertible debt outstanding as of March 31, 2020 was convertible into 5,044,440 shares of common stock. During the three months ended March 31, 2020, $1,500,000 of the principal on the June 2019 Notes was converted into 7,142,852 shares of common stock, of which 476,191 were issued by March 31, 2020. The remaining $448,888 of principal on these notes were in default as of March 31, 2020. On May 19, 2020, the holder of $444,444 of the notes agreed to extend the repayment period to December 31, 2020. There were no other changes to terms of the convertible notes payable. In December 2019, the Company issued convertible notes to an institutional investor with a principal amount of $560,000 (the “December 2019 Notes”) with an original issue discount of $56,000 and a maturity date of June 10, 2020. The Company paid $44,000 of deferred finance costs. The Company also issued 186,667 shares of common stock to the lender of the December 2019 Notes as deferred finance costs, valued at $81,200 based on the closing price of the stock at the date of borrowing. This lender also received 933,333 shares of common stock valued at $406,000 as a share lending arrangement, which the company recorded as contra-equity. The shares may be returned to the Company if the debt is satisfied in full by the maturity date. If the debt is not repaid by the maturity date, the shares are concerned fully earned, and the fair value of the shares will be amortized in full to expense. This note of $560,000 was paid off in full in June 2020. The Company amortized $1,405,017 of debt discount and deferred finance costs to interest expense related to convertible notes payable during the three months ended March 31, 2020. The Company evaluated the embedded conversion features of the convertible debt instruments and the warrants discussed above and determined that the conversion options and the warrants should be accounted for as derivative liabilities. The fair values of the conversion option and the attached warrants were estimated using a binomial model with the following assumptions: As of March 31, 2020 Conversion Option Warrants Volatility 130.4 % 82.9-88.7 % Dividend Yield 0 % 0 % Risk-free rate 0.11 % 0.29-0.37% Expected term 0.50 years 3-4.25 years Stock price $ 0.2399-0.545 $ 0.545 Exercise price $ 0.20-0.35 $ 0.20-0.30 Derivative liability fair value $ 1,740,332 $ 1,974,007 All fair value measurements related to the derivative liabilities are considered significant unobservable inputs (Level 3) under the fair value hierarchy of ASC 820. The table below presents the change in the fair value of the derivative liability during the three months ended March 31, 2020: Fair value as of December 31, 2019 $ 504,750 Fair value on the date of issuance related to warrants issued 73,530 Extinguishment due to repayment of debt (2,280 ) Extinguishment due to conversion of debt (606,048 ) Loss on change in fair value of derivatives 3,744,387 Fair value as of March 31, 2020 $ 3,714,339 |