Commitments and contingencies (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2023

Dec. 31, 2022

Commitments and contingencies

Schedule of the maturity of the contractual, undiscounted operating lease liabilities

The maturity of the contractual, undiscounted operating lease liabilities as of March 31, 2023 are as follows:

	Lease Payment
2023	$	361,734
2024		292,992
2025		108,792
2026		48,000
2027 and thereafter		—
Total undiscounted operating lease liabilities	$	811,518
Interest on operating lease liabilities		(43,236)
Total present value of operating lease liabilities	$	768,282

December 31,	Lease Payment
2023		578,280
2024		305,400
2025		121,200
2026		48,000
2027 and thereafter		—
Total undiscounted operating lease liabilities	$	1,052,880
Interest on operating lease liabilities		(51,603)
Total present value of operating lease liabilities	$	1,001,277