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Promissory notes, secured (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Mar. 06, 2022
Mar. 29, 2022
Dec. 31, 2022
Dec. 31, 2021
Oct. 27, 2022
Apr. 22, 2022
Mar. 14, 2022
Feb. 17, 2022
Dec. 31, 2020
Debt Instrument [Line Items]                  
Secured notes payable       $ 38,000          
Convertible note, face value     $ 435,682   $ 540,000        
Convertible notes, interest rate per annum         4.00%        
Accrued interest of debt     188,223            
Borrowings under convertible debt issued with warrants     $ 498,327 0          
Evasyst [Member]                  
Debt Instrument [Line Items]                  
Note receivable due from Evasyst           $ 50,000      
Secured promissory notes [Member] | Mark Ollila [Member]                  
Debt Instrument [Line Items]                  
Convertible note, face value   $ 8,000   $ 8,000          
Convertible notes, interest rate per annum                 18.00%
Accrued interest of debt   1,450              
Value of shares issued on conversion of secured promissory notes   $ 9,450              
Shares issued on conversion of secured promissory note   1,542              
Secured promissory notes [Member] | Evasyst [Member]                  
Debt Instrument [Line Items]                  
Convertible note, face value $ 30,000                
Convertible notes, interest rate per annum             18.00% 18.00% 18.00%
Accrued interest of debt $ 3,124                
Note receivable due from Evasyst             $ 25,000 $ 25,000