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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of shares issued which are neither cancelled nor held in the treasury.

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Stock-based compensation (Details Narrative) - USD ($)	3 Months Ended
Stock-based compensation (Details Narrative) - USD ($)	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Oct. 14, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved	75,282,275
Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average grant-date fair values	$ 0.64	$ 0.37
Unvested Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unamortized stock-based compensation cost	$ 5,573,573
Weighted average period	2 years 11 months 8 days
Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Remained shares outstanding	372,896,324	308,090,258	371,076,200	307,020,758
2021 Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved					37,504,358
Remained shares outstanding	709,633
Shares available for grant	15,126,740
2021 Plan [Member] \| Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Remained shares outstanding	22,377,618
2013 Plan [Member] \| Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Remained shares outstanding	17,278,905
Shares available for grant	0