| Schedule of stock option activity |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Weighted- | | | | | | | | Weighted- | | Average | | | | | | Outstanding | | Average | | Remaining | | Aggregate | | | Options | | Exercise Price | | Terms (Years) | | Intrinsic Value | Balance as of December 31, 2025 | | 1,225,125 | | $ | 0.71 | | | | $ | — | Granted | | — | | | — | | | | | | Exercised | | — | | | — | | | | | | Forfeited | | — | | | — | | | | | | Canceled | | (38,125) | | $ | 0.93 | | | | | | Balance as of March 31, 2026 | | 1,187,000 | | $ | 0.70 | | 4.3 | | $ | — | Vested and exercisable as of March 31, 2026 | | 1,183,249 | | $ | 0.70 | | 4.2 | | $ | — | Vested and expected to vest as of March 31, 2026 | | 1,186,766 | | $ | 0.70 | | 4.3 | | $ | — |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Weighted- | | | | | | | | Weighted- | | Average | | Aggregate | | | Outstanding | | Average | | Remaining | | Intrinsic | | | Options | | Exercise Price | | Terms (Years) | | Value | Balance as of December 31, 2024 | | 1,343,500 | | $ | 0.71 | | | | $ | — | Granted | | — | | | — | | | | | | Exercised | | — | | | — | | | | | | Forfeited | | (1,875) | | $ | 0.44 | | | | | | Canceled | | (116,500) | | $ | 0.75 | | | | | | Balance as of December 31, 2025 | | 1,225,125 | | $ | 0.71 | | 4.4 | | $ | — | | | | | | | | | | | | Vested and exercisable as of December 31, 2025 | | 1,219,500 | | $ | 0.71 | | 4.4 | | $ | — | | | | | | | | | | | | Vested and expected to vest as of December 31, 2025 | | 1,224,652 | | $ | 0.71 | | 4.4 | | $ | — |
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| Schedule of stock warrants outstanding |
| | | | | | | | | | | | | | | | | | | | Exercise Price | | Number of | Original Issue Date | | Stock Class | | Per Share | | Shares | | | | | | | | | September 2017 | | Common | | $ | 0.0010 | | 47,693 | December 2017 | | Common | | $ | 3.7057 | | 150,000 | March 2018 | | Common | | $ | 3.7057 | | 67,928 | March 2018 | | Common | | $ | 3.7057 | | 25,629 | May 2019 | | Common | | $ | 9.0820 | | 132,129 | July 2023 | | Series 1 Preferred | | $ | 0.0217 | | 93,237,996 | November 2023 | | Series 1 Preferred | | $ | 0.0217 | | 3,978,782 | March 2026 | | Series 2 Preferred | | $ | 0.0001 | | 1,419,691,406 |
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| | | | | | | | | | | | | | | | | | | | Exercise Price | | Number of | Original Issue Date | | Stock Class | | Per Share | | Shares | | | | | | | | | September 2017 | | Common | | $ | 0.00 | | 47,693 | December 2017 | | Common | | $ | 3.71 | | 150,000 | March 2018 | | Common | | $ | 3.71 | | 67,928 | March 2018 | | Common | | $ | 3.71 | | 25,629 | May 2019 | | Common | | $ | 9.08 | | 132,129 | July 2023 | | Series 1 Preferred | | $ | 0.02 | | 93,237,996 | November 2023 | | Series 1 Preferred | | $ | 0.02 | | 3,978,782 |
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