Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value of Financial Instruments (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value of Financial Instruments (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Liabilities, Fair Value Disclosure [Abstract]    
Warrant liability $ 12,253 $ 18,223
Contingent consideration 13,379,797 12,179,476
Derivative liability 2,664,171 2,294,720
Total 16,056,221 14,492,419
Warrant Liability    
Outstanding as of December 31, 2021 18,223  
Change in fair value 1,200,321  
Outstanding as of March 31, 2022 12,253 18,223
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Outstanding as of December 31, 2021 12,179,476  
Change in fair value 1,200,321  
Outstanding as of March 31, 2022 13,379,797 12,179,476
Level 2    
Liabilities, Fair Value Disclosure [Abstract]    
Warrant liability 12,253 18,223
Total 12,253 18,223
Level 3    
Liabilities, Fair Value Disclosure [Abstract]    
Contingent consideration 13,379,797 12,179,476
Derivative liability 2,664,171 2,294,720
Total $ 16,043,968 $ 14,474,196