Note 7 - Income Taxes - Schedule of Deferred Tax Assets (Liabilities) for Federal and State Income Taxes (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Net operating loss carryover	$ 15,321,000	$ 8,990,000
Stock-based compensation	2,193,000	1,395,000
Other liabilities	(279,000)
Other		501,000
Valuation allowance	(17,235,000)	(10,886,000)
Net deferred tax asset	$ 0	$ 0

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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