Commitments and contingencies (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Mar. 10, 2021 ft²	Feb. 01, 2020
Operating leases:
Operating lease cost	$ 99,143	$ 99,142	$ 198,285	$ 185,273
Variable lease cost	23,926	26,760	42,351	52,151
Operating lease expense	123,069	125,902	240,636	237,424
Lease income - sub lease	(106,761)	(108,256)	(213,522)	(211,563)
Net rent expense	$ 16,308	$ 17,646	27,114	25,861
Operating cash flows - operating leases			$ 201,134	178,577
Right-of-use assets obtained in exchange for operating lease liabilities				$ 122,809
Weighted-average remaining lease term - operating leases	1 year 4 months 24 days	2 years 4 months 24 days	1 year 4 months 24 days	2 years 4 months 24 days
Weighted-average discount rate - operating leases	14.30%	14.10%	14.30%	14.10%
Office spare leased | ft²					3,127
Lease term					24 months	4 years
Security deposit	$ 13,000		$ 13,000
First 12 months
Operating leases:
Base rent per month			4,690.50
Remaining 12 months
Operating leases:
Base rent per month			$ 6,514.58