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Note 6 - Fair Value Measurements - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($)
Mar. 31, 2026
Dec. 31, 2025
Short-term investment in marketable equity securities, at fair value (asset) $ 9,477,682  
Derivative liabilities - Series A warrants 55,000 $ 50,000
Total 9,532,682  
Total   50,000
Fair Value, Inputs, Level 1 [Member]    
Short-term investment in marketable equity securities, at fair value (asset) 9,477,682  
Derivative liabilities - Series A warrants 0 0
Total 9,477,682  
Total   0
Fair Value, Inputs, Level 2 [Member]    
Short-term investment in marketable equity securities, at fair value (asset) 0  
Derivative liabilities - Series A warrants 0 0
Total 0  
Total   0
Fair Value, Inputs, Level 3 [Member]    
Short-term investment in marketable equity securities, at fair value (asset) 0  
Derivative liabilities - Series A warrants 55,000 50,000
Total $ 55,000  
Total   $ 50,000