Annual report pursuant to Section 13 and 15(d)

Warrants - Preferred stock and common stock outstanding (Details)

v3.22.1
Warrants - Preferred stock and common stock outstanding (Details) - $ / shares
Dec. 31, 2021
Dec. 31, 2020
Class of Warrant or Right [Line Items]    
Shares Issuable Upon Exercise of Warrant 16,877,907 1,937,260
March 17, 2014    
Class of Warrant or Right [Line Items]    
Contractual Term   10 years
Shares Issuable Upon Exercise of Warrant   94,459
Warrants exercise price   $ 0.24
September 28, 2016    
Class of Warrant or Right [Line Items]    
Contractual Term   10 years
Shares Issuable Upon Exercise of Warrant   1,014,963
Warrants exercise price   $ 0.003
July 5, 2017    
Class of Warrant or Right [Line Items]    
Contractual Term   10 years
Shares Issuable Upon Exercise of Warrant   141,689
Warrants exercise price   $ 0.24
February 12, 2019    
Class of Warrant or Right [Line Items]    
Contractual Term   10 years
Shares Issuable Upon Exercise of Warrant   28,338
Warrants exercise price   $ 0.24
March 30, 2020    
Class of Warrant or Right [Line Items]    
Contractual Term   10 years
Shares Issuable Upon Exercise of Warrant   279,974
Warrants exercise price   $ 0.40
December 3, 2020    
Class of Warrant or Right [Line Items]    
Contractual Term   10 years
Shares Issuable Upon Exercise of Warrant   377,837
Warrants exercise price   $ 0.42
January 13, 2021    
Class of Warrant or Right [Line Items]    
Contractual Term 10 years  
Shares Issuable Upon Exercise of Warrant 2,552,913  
Warrants exercise price $ 0.42  
July 16, 2021    
Class of Warrant or Right [Line Items]    
Contractual Term 5 years  
Shares Issuable Upon Exercise of Warrant 14,324,994  
Warrants exercise price $ 11.50