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Convertible Notes Payable | 9 Months Ended
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Sep. 30, 2025
Debt Disclosure [Abstract] |
Convertible Notes Payable |
| 4. | Convertible Notes Payable
Schedule of convertible notes payable |  |  |  |  |  |
|  | September 30, 2025 (unaudited) |  |  | December 31, 2024 |
Convertible notes |  | $ | 822,000 |  |  | $ | 1,651,000 |
Accrued interest |  |  | 517,000 |  |  |  | 1,006,000 |
Subtotal, including $1,070,000 and $2,339,000 in default at September 30, 2025 and December 31, 2024, respectively |  |  | 1,339,000 |  |  |  | 2,657,000 |
Convertible note discount |  |  | (45,000 | ) |  |  | (133,000 | )
Balance on convertible notes, net of note discounts |  | $ | 1,294,000 |  |  | $ | 2,524,000 |
Convertible notes payable At December 31, 2024, total outstanding notes payable totaled $1,651,000. During the nine-month period ended September 30, 2025, the Company issued convertible promissory notes in the aggregate of $2,515,000 for cash proceeds of $2,285,000, net of original issue discount (“OID”) of $229,000. The notes are unsecured, mature in twelve months from issuance, and are convertible into shares of the Company’s common stock at $0.08 per share. In addition, the Company granted the note holders warrants to purchase 31,423,615 shares of the Company’s common stock with a relative value of $1,430,000. The warrants are fully vested, and expire one year from the date of issuance. The Company determined the fair value of the warrants by using a Black-Scholes option pricing model, with the following assumptions: expected term of 1.0 year, stock price of $0.16 to $0.20, exercise price of $0.10, volatility of 136% to 160%, risk-free rate of 3.96% to 4.03%, and no forfeiture rate. Also, during the period ended September 30, 2025, convertible notes of $3,344,000, net of unamortized discount of $1,572,000, were converted into 65,523,469 shares of common stock (see also accrued interest below). At September 30, 2025, total outstanding convertible notes payable totaled $822,000. As of September 30, 2025, convertible notes payable and accrued interest are convertible into approximately 16,029,193 shares of common stock at conversion rates ranging from $0.03 to $0.48 per share. As of September 30, 2025, a total of 42 convertible notes and accrued interest in the aggregate of $1,070,000 have reached maturity and are past due. Accrued interest At December 31, 2024, accrued interest on convertible notes payable totaled $1,006,000. During the period ended September 30, 2025, accrued interest of $607,000 was converted into 10,860,391 shares of common stock. During the nine-month period ended September 30, 2025, accrued interest of $118,000 was recorded. At September 30, 2025, accrued interest on convertible notes payable totaled $517,000. Debt discount At December 31, 2024, the unamortized debt discount was $133,000. During the nine-month period ended September 30, 2025, debt discount of $1,659,000 was recorded for the relative fair value of warrants of $1,430,000 and OID of $229,000, debt discount amortization of $175,000 was recorded, and $1,572,000 of debt discount was removed and included in the carrying amount of related convertible notes payable that were converted into shares of common stock. At September 30, 2025, the unamortized debt discount was $45,000.

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