Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net loss	$ (15,966)	$ (14,851)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of right-of-use assets	268	23
Depreciation	57
Change in fair value of short-term investment	12	1,517
Change in fair value of long-term investment	482	(1,608)
Research and development-acquired license, expensed		525
Stock-based compensation	1,485	1,475
Realized loss on marketable securities	1,249	712
Unrealized (gain) loss on marketable securities	(897)	3,889
Unrealized loss on note receivable	212
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(229)	(344)
Prepaid acquisition cost	301
Clearing broker deposits	(3,622)
Accounts payable and accrued expenses	(345)	137
Accrued salaries and benefits	(628)	659
Accrued commissions	152
Lease liabilities	11	12
Other current liabilities	66
Notes receivable, at fair value – net interest accrued	(96)	(521)
Deposit		(295)
Net cash used in operating activities	(17,488)	(8,670)
Cash flows from investing activities
Purchase of marketable securities	(34,068)	(27,479)
Sale of marketable securities	24,572	28,503
Proceeds from sale of digital currencies		93
Purchase of fixed assets	(419)
Acquisition of FPS, net of cash acquired and receivable owed from FPS	(1,112)
Collection of principal on note receivable	850
Funds to employee forgivable loan	(107)
Purchase of research and development licenses		(525)
Purchase of short-term and long-term investments	(75)	(15,016)
Purchase of short-term and long-term promissory notes		(1,600)
Net cash used in investing activities	(10,359)	(16,024)
Cash flows from financing activities
Proceeds from issuance of Series O and Series P Redeemable Convertible Preferred Stock, net of discount and offering cost		17,891
Payment for fractional shares		(26)
Redemption of Series O and Series P Redeemable Convertible Preferred Stock		(22,000)
Purchase of treasury stock	(939)	(2,237)
Net cash used in financing activities	(939)	(6,372)
Net decrease in cash and cash equivalents and restricted cash	(28,786)	(31,066)
Cash and cash equivalents, beginning of period	33,174	65,562
Cash and cash equivalents, end of period	4,388	34,496
Non-cash investing and financing activities
Transfer from short-term investment to marketable securities		1,497
Reclassify from convertible note receivable to notes receivable at fair value		2,147
Promissory convertible note receivable conversion into common shares		$ 899
On March 27, 2023, the Company acquired all assets and liabilities of FPS as disclosed in Note 4:
Net assets acquired, net of cash acquired and receivable owed from FPS	3,112
Less - Deposit previously transferred in October 2022 to FPS	(2,000)
Net cash paid	$ 1,112