Consolidated Balance Sheets (Unaudited) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 5,559,100	$ 5,037,300
Marketable securities		318,700
Accounts receivable, net	602,700	511,200
Prepaid expenses and other current assets	112,700	102,600
Total current assets	6,274,500	5,969,800
Right-of-use assets	44,000	51,600
Property and equipment, net	4,500	5,300
Other assets	22,800	22,900
Total assets	6,345,800	6,049,600
Current liabilities
Accounts payable	230,000	234,200
Accrued expenses	72,500	61,800
Accrued wages	266,700	150,000
Lease liabilities	10,300	10,300
Deferred revenue	1,378,800	1,206,100
Total current liabilities	1,958,300	1,662,400
Long-term liabilities
Lease liabilities	33,300	40,900
Deferred revenue	238,100	264,800
Total liabilities	2,229,700	1,968,100
Commitments and contingencies
Stockholders’ equity
Preferred stock, $0.01 par value, 5,000,000 shares authorized, no shares issued and outstanding as of March 31, 2023 and December 31, 2022
Common stock, $0.0001 par value, 195,000,000 shares authorized, 18,826,342 shares issued and outstanding as of March 31, 2023 and December 31, 2022	1,900	1,900
Additional paid-in capital	82,145,100	82,145,100
Accumulated deficit	(78,030,900)	(78,065,500)
Total stockholders’ equity	4,116,100	4,081,500
Total liabilities and stockholders’ equity	$ 6,345,800	$ 6,049,600