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Fair Value Measurements - Schedule of liabilities measured at fair value on the condensed consolidated balance sheet (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Recurring fair value measurements          
Recurring fair value measurements $ 2,653,674   $ 2,653,674   $ 3,174,249
Recurring fair value measurements, gain (loss) during period 1,708,510 $ 1,592,680 492,886 $ 2,308,808  
Derivative liability - non-controlling redeemable preferred shares          
Recurring fair value measurements          
Recurring fair value measurements         0
Recurring fair value measurements, gain (loss) during period   7,907   (3,626)  
2022 July Institutional/Accredited Investor warrants          
Recurring fair value measurements          
Recurring fair value measurements         0
Recurring fair value measurements, gain (loss) during period   3   4,621  
2024 February Institutional/Accredited Investor warrants          
Recurring fair value measurements          
Recurring fair value measurements 91,712   91,712   291,566
Recurring fair value measurements, gain (loss) during period (18,042) 1,584,770 199,854 2,307,813  
2024 October Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 6,974   6,974   292,234
Recurring fair value measurements, gain (loss) during period 20,082 0 285,260 0  
Senior Convertible Notes - October 2024          
Recurring fair value measurements          
Recurring fair value measurements 152,909   152,909   2,475,162
Recurring fair value measurements, gain (loss) during period 972,245 0 (118,761) 0  
Additional Investment Rights - October 2024          
Recurring fair value measurements          
Recurring fair value measurements 10,333   10,333   5,950
Recurring fair value measurements, gain (loss) during period 672,334 0 (4,383) 0  
2024 December Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 48,708   48,708   109,337
Recurring fair value measurements, gain (loss) during period (8,396) $ 0 60,629 $ 0  
2025 March Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 36,257   36,257    
Recurring fair value measurements, gain (loss) during period 70,287   70,287    
2025 April Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 31,683   31,683    
Recurring fair value measurements, gain (loss) during period 0   0    
2025 May Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 139,917   139,917    
Recurring fair value measurements, gain (loss) during period 0   0    
Senior Convertible Notes - May 2025          
Recurring fair value measurements          
Recurring fair value measurements 2,135,181   2,135,181    
Recurring fair value measurements, gain (loss) during period 0   0    
Level 1: Quoted Prices in Active Markets for Identical Assets          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 1: Quoted Prices in Active Markets for Identical Assets | Derivative liability - non-controlling redeemable preferred shares          
Recurring fair value measurements          
Recurring fair value measurements         0
Level 1: Quoted Prices in Active Markets for Identical Assets | 2022 July Institutional/Accredited Investor warrants          
Recurring fair value measurements          
Recurring fair value measurements         0
Level 1: Quoted Prices in Active Markets for Identical Assets | 2024 February Institutional/Accredited Investor warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 1: Quoted Prices in Active Markets for Identical Assets | 2024 October Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 1: Quoted Prices in Active Markets for Identical Assets | Senior Convertible Notes - October 2024          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 1: Quoted Prices in Active Markets for Identical Assets | Additional Investment Rights - October 2024          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 1: Quoted Prices in Active Markets for Identical Assets | 2024 December Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 1: Quoted Prices in Active Markets for Identical Assets | 2025 March Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0    
Level 1: Quoted Prices in Active Markets for Identical Assets | 2025 April Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0    
Level 1: Quoted Prices in Active Markets for Identical Assets | 2025 May Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0    
Level 1: Quoted Prices in Active Markets for Identical Assets | Senior Convertible Notes - May 2025          
Recurring fair value measurements          
Recurring fair value measurements 0   0    
Level 2: Significant Other Observable Inputs          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 2: Significant Other Observable Inputs | Derivative liability - non-controlling redeemable preferred shares          
Recurring fair value measurements          
Recurring fair value measurements         0
Level 2: Significant Other Observable Inputs | 2022 July Institutional/Accredited Investor warrants          
Recurring fair value measurements          
Recurring fair value measurements         0
Level 2: Significant Other Observable Inputs | 2024 February Institutional/Accredited Investor warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 2: Significant Other Observable Inputs | 2024 October Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 2: Significant Other Observable Inputs | Senior Convertible Notes - October 2024          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 2: Significant Other Observable Inputs | Additional Investment Rights - October 2024          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 2: Significant Other Observable Inputs | 2024 December Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0   0
Level 2: Significant Other Observable Inputs | 2025 March Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0    
Level 2: Significant Other Observable Inputs | 2025 April Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0    
Level 2: Significant Other Observable Inputs | 2025 May Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 0   0    
Level 2: Significant Other Observable Inputs | Senior Convertible Notes - May 2025          
Recurring fair value measurements          
Recurring fair value measurements 0   0    
Level 3: Significant Unobservable Inputs          
Recurring fair value measurements          
Recurring fair value measurements 2,653,674   2,653,674   3,174,249
Level 3: Significant Unobservable Inputs | Derivative liability - non-controlling redeemable preferred shares          
Recurring fair value measurements          
Recurring fair value measurements         0
Level 3: Significant Unobservable Inputs | 2022 July Institutional/Accredited Investor warrants          
Recurring fair value measurements          
Recurring fair value measurements         0
Level 3: Significant Unobservable Inputs | 2024 February Institutional/Accredited Investor warrants          
Recurring fair value measurements          
Recurring fair value measurements 91,712   91,712   291,566
Level 3: Significant Unobservable Inputs | 2024 October Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 6,974   6,974   292,234
Level 3: Significant Unobservable Inputs | Senior Convertible Notes - October 2024          
Recurring fair value measurements          
Recurring fair value measurements 152,909   152,909   2,475,162
Level 3: Significant Unobservable Inputs | Additional Investment Rights - October 2024          
Recurring fair value measurements          
Recurring fair value measurements 10,333   10,333   5,950
Level 3: Significant Unobservable Inputs | 2024 December Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 48,708   48,708   $ 109,337
Level 3: Significant Unobservable Inputs | 2025 March Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 36,257   36,257    
Level 3: Significant Unobservable Inputs | 2025 April Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 31,683   31,683    
Level 3: Significant Unobservable Inputs | 2025 May Institutional/Accredited Investor Warrants          
Recurring fair value measurements          
Recurring fair value measurements 139,917   139,917    
Level 3: Significant Unobservable Inputs | Senior Convertible Notes - May 2025          
Recurring fair value measurements          
Recurring fair value measurements $ 2,135,181   $ 2,135,181