Stockholders’ Equity (Deficit) | Note 9 – Stockholders’ Equity (Deficit) Series C Preferred Stock On February 24, 2021, the Company sold 179,850 10 163,500 30 1,082,441 113,850 103,500 177,231 293,700 407,812 The tables below provide the preferred stock activity for the six months ended June 30, 2021 and 2020, and also a reconciliation of the beginning and ending balances for the derivative liabilities measured using Level 3 fair value inputs for the six months ended June 30, 2021 and 2020 Preferred Discount Preferred Derivative Balance , December 31, 2020 $ — — — — Issuance of Series C Preferred shares 293,700 293,700 — 1,259,672 Accretion of discount — (47,574 ) 47,574 — Accretion of dividend on Series C preferred stock 9,515 — 9,515 12,714 Change in fair value of derivatives — — — (864,574 ) Balance June 30, 2021 $ 303,215 $ 246,126 $ 57,089 $ 407,812 Preferred Discount Preferred Derivative Balance , December 31, 2019 $ 140,000 $ 131,250 $ 8,750 $ 190,131 Issuance of Series C Preferred shares 111,600 111,600 — 164,586 Conversion of Series C Preferred shares (39,048 ) (26,872 ) (12,176 ) (96,968 ) Accretion of discount 49,886 — 49,886 — Accretion of dividend on Series C preferred stock 9,827 — 9,827 — Change in fair value of derivatives — — — 10,551 Balance June 30, 2020 $ 272,265 $ 215,978 $ 56,287 $ 268,300 The following assumptions were used in the Binomial Option Pricing Model in calculating the embedded conversion features and current liabilities for the six months ended June 30, 2021 and 2020 2021 2020 Risk-free interest rates 0.12 0.25 % 0.16 0.71 % Expected life (years) 1.7 2.0 1.45 2.0 Expected dividends 0 % 0 % Expected volatility 188 196 % 172 262 % Common Stock 2021 Transactions During the six months ended June 30, 2021, $ 100,000 6,256 5,026,413 705,635 During the six months ended June 30, 2021, 2,931,647 85,654 1,967,714 30,976 2,695,620 1,731,687 68,042 13,364 During the six months ended June 30, 2021, 87,252 4,000 1,137,553 16,000 55,556 1,105,857 2,000 14,000 At June 30, 2021 and December 31, 2020, shares to be issued for debt conversions were 31,960 21,861 During the six months ended June 30, 2021, we issued 30,000 1,915 2020 Transactions During the six months ended June 30, 2020, $ 89,000 6,282 210 13,767,631 1,931 25,377 97,838 35,844 35,844 As of June 30, 2020, 1,442,004 59,645 During the six months ended June 30, 2020, 2,553,969 65,633 During the six months ended June 30, 2020, 4,939,759 39,048 Common stock warrant activity: The Company has determined that certain of its warrants are subject to derivative accounting. The table below provides a reconciliation of the beginning and ending balances for the warrant liabilities measured using fair significant unobservable inputs (Level 3) for the six months ended June 30, 2021 and 2020 Six Months ended June 30, 2021 2020 Balance at beginning of period $ 476 $ 967 Additions to derivative instruments — — Loss on change in fair value of derivative liability 2,065 28 Balance at end of period $ 2,541 $ 995 The following assumptions were used in the Binomial Option Pricing Model in calculating the embedded conversion features and current liabilities June 30, 2021 June 30, 2020 Annual dividend yield 0 % 0 % Expected life (years) 1.5 5.88 0.17 7.13 Risk-free interest rate 0.16 1.16 % 0.11 0.55 % Expected volatility 195 243 % 172 262 % |