Condensed Statements of Cash Flows - USD ($)	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Operating activities
Royalties received		$ 13,542,442
Interest received	$ 113,031	465
Expenses paid	(976,674)	(444,394)
Net cash from (used for) operating activities	(863,643)	13,098,513
Investing activities
Maturities of U.S. Government securities	23,997,422
Purchases of U.S. Government securities	(23,997,422)
Net cash from investing activities
Financing activity
Distributions to unitholders		(22,960,018)
Net change in cash and cash equivalents	(863,643)	(9,861,505)
Cash and cash equivalents, beginning of period	13,966,500	47,727,522
Cash and cash equivalents, end of period	13,102,857	37,866,017
Reconciliation of net income to net cash from (used for) operating activities
Net income	1,023,139	13,595,185
Decrease (increase) in accrued income receivable	(1,363,887)	2,317,516
Increase in contract asset		(2,970,857)
Decrease in prepaid expense	14,517	16,030
Increase (decrease) in accrued expenses	(165,481)	140,639
Decrease in contract liability	(371,931)
Net cash from (used for) operating activities	$ (863,643)	13,098,513
Non cash financing activity
Distributions declared and payable		$ 13,644,810