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Revenue (Tables)
12 Months Ended
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]  
Summary of Revenue by Geographic Area

The following table sets forth revenue by geographic area:

 

   Years Ended December 31, 
   2021   2020 
United States  $52,185,812   $44,862,751 
Rest of World   45,699,791    29,690,007 
Total  $97,885,603   $74,552,758 
Percentage of revenue by area:          
United States   53%   60%
Rest of World   47%   40%
Schedule of Deferred Revenue

Changes in the Company’s deferred revenue balance for the years ended December 31, 2021 and 2020 were as follows:

 

 

Balance as of December 31, 2019  $1,323 
Revenue recognized included in deferred revenue balance at the beginning of the period   (1,323)
Increase due to prepayments from customers   305,307 
Balance as of December 31, 2020   305,307 
Revenue recognized included in deferred revenue balance at the beginning of the period   (256,110)
Increase due to prepayments from customers   79,213 
Increase due to note receivable   150,000 
Decrease due to refunds to customers and application to open balances   (128,410)
Balance as of December 31, 2021  $150,000