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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Cash flows from operating activities:    
Net loss $ (462,638) $ (628,348)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 6,816 7,180
Realized loss on marketable securities 60,143
Unrealized gain on marketable securities (22,900)
ROU asset amortization 36,958 36,351
Bad debt recovery (5,000)
Change in assets and liabilities:    
Royalty receivables (89,264) 78,086
Prepaid expenses and other assets 7,785 6,358
Accounts payable and accrued expenses (33,288) (25,045)
Deferred revenue 11,921 10,756
Operating lease liability (47,513) (43,435)
Net cash used in operating activities (597,123) (497,954)
Cash flows from investing activities:    
Purchases of fixed assets (702) (605)
Purchases of marketable securities (2,965,160)
Sales of marketable securities 2,694,968
Net cash (used in) provided by investing activities (2,965,862) 2,694,363
Cash flows from financing activities:    
Net proceeds from exercise of warrants 484,502
Net cash provided by financing activities 484,502
Net (decrease) increase in cash and cash equivalents (3,078,483) 2,196,409
Cash and cash equivalents at beginning of period 4,230,916 269,964
Cash and cash equivalents at end of period $ 1,152,433 $ 2,466,373