Note 4 - Equity (Tables)

12 Months Ended

Mar. 31, 2024

Notes Tables

Restricted Stock Expenses, General and Administrative [Table Text Block]

	Year ended March 31,
	2024		2023
Recognized in general and administrative expense	$	16,625	$	—
Total	$	16,625	$	—

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

				Grant Date
	Number of Shares			Fair Value Per Share
Outstanding, March 31, 2023		—		$	—
Granted		35,000		$	3.80
Vested		(2,917	)	$	3.80
Unvested, March 31, 2024		32,083		$	3.80

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Options		Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Life (In Years)		Aggregate Intrinsic Value*
Outstanding and exercisable, March 31, 2023		—	$	—		—	$	—
Granted		2,003,600		2.33		—		—
Exercised		—		—		—		—
Forfeited/Cancelled		—		—		—		—
Expired		—		—		—		—
Outstanding, March 31, 2024		2,003,600	$	2.33		9.35	$	1,680,672
Exercisable, March 31, 2024*		239,217	$	2.00		8.96	$	244,001

Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block]

	Warrants			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Life (In Years)		Aggregate Intrinsic Value*
Outstanding and exercisable, March 31, 2023		6,569,929		$	0.02		5.99	$	12,982,587
Granted		1,679,765			0.25		—		—
Exercised**		(2,485,301	)		0.03		—		—
Forfeited/Cancelled		(19,824	)		1.50		—		—
Expired		—			—		—		—
Outstanding, March 31, 2024		5,744,569		$	0.08		4.80	$	17,072,147
Exercisable, March 31, 2024		5,736,236		$	0.08		4.80	$	17,063,647

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Range
	2023		2024
Fair value of common stock on the measurement date (per share)		—	$2.00 - to $5.00
Discount rate based on the daily yield curve rates for U.S. Treasury obligations		—		4.04% to 4.54%
Expected life		—	3 to 5 years
Expected volatility based on the historical volatility of comparable companies' stock		—		104% to 119%