Note 2 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

							Balance as of
							September 30,
	Level 1		Level 2		Level 3		2021
Investments:
Publicly traded common stock	$	845,820	$	-	$	-	$	845,820
Publicly traded options		46,848						46,848
Private company common stock		-		-		178,824		178,824
Private company preferred stock		-		-		4,781,520		4,781,520
Total	$	892,668	$	-	$	4,960,344	$	5,853,012

							Balance as of
							December 31,
	Level 1		Level 2		Level 3		2020
Investments:
Publicly traded common stock	$	979,020	$	-	$	-	$	979,020
Publicly traded options	$	55,848						55,848
Private company common stock		-		-				-
Private company preferred stock		-		-		2,574,665		2,574,665
Total	$	1,034,868	$	-	$	2,574,665	$	3,609,533

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	Fair Value as of
	September 30, 2021		Valuation Technique	Unobservable Inputs
Private Company Common Stock	$	178,824	Purchase price 3-10-2021	Acquisition cost
Private Company Preferred Stock	$	4,781,521	Big data technology "MESE" valuation system	company valuation range $1.2bn to $5.0bn Best-fit $2.6bn company growth 131.9% SPAC inqueries

	Fair Value as of
	December 31, 2020		Valuation Technique	Unobservable Inputs
Private Company Preferred Stock	$	2,574,665	Big data technology "MESE" valuation system	company valuation average range $1.0bn to $1.5bn SPAC inqueries

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Nine Months Ended
	September 30, 2021
Balance as of December 31, 2020	$	2,574,665
Unrealized gain on investments		2,206,855
Purchase of investment		178,824
Balance as of September 30, 2021	$	4,960,344

	Nine Months Ended
	September 30, 2020
Balance as of December 31, 2019	$	2,574,665
Unrealized gain on investments		-
Purchase of investment		-
Balance as of September 30, 2020	$	2,574,665