Quarterly report pursuant to Section 13 or 15(d)

Common stock warrants (Details Narrative)

v3.23.2
Common stock warrants (Details Narrative) - USD ($)
6 Months Ended 12 Months Ended
Nov. 14, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Class of Warrant or Right [Line Items]        
Warrants maturity date   Aug. 21, 1998    
Warrant redemption price   $ 0.10    
Weighted average outstanding warrant exercise price   $ 2.11   $ 2.11
Weighted average contractual life of warrants   15 years   15 years 6 months
Warrants, intrinsic value   $ 0   $ 0
Series D Warrants [Member]        
Class of Warrant or Right [Line Items]        
Weighted average outstanding warrant exercise price   $ 1.60    
Number of warrants exercised     2,954  
Warrants outstanding   6,250,000    
Series H Warrants [Member]        
Class of Warrant or Right [Line Items]        
Weighted average outstanding warrant exercise price   $ 7   $ 7
Number of warrants cancelled       275,647
Warrants outstanding   $ 413,512   $ 413,512
Number of warrants exercised    
Warrants outstanding       413,512
Series H Warrants [Member] | Lenox Hill Partners, LLC [Member]        
Class of Warrant or Right [Line Items]        
Number of warrants cancelled 275,647      
Series H Warrants [Member] | Investment Banking Agreement [Member]        
Class of Warrant or Right [Line Items]        
Weighted average outstanding warrant exercise price   $ 7    
Warrants issued   689,159    
Warrants term   30 years    
Series B Warrants [Member]        
Class of Warrant or Right [Line Items]        
Number of warrants exercised     87,456  
Series B and D Common Stock Warrants [Member]        
Class of Warrant or Right [Line Items]        
Number of warrants exercised     90,410
Warrants issued   0