Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 91	$ 17
Marketable securities	857	2,700
Prepaid expenses and other assets	181	188
Total current assets	1,129	2,905
Property and equipment, net		1
Investments	10,153	10,345
Total assets	11,282	13,251
Current liabilities
Accounts payable and accrued expenses	68	132
Accrued salaries and benefits	682	732
Warrant liabilities		82
Payable to DatChat		207
Total current liabilities	750	1,153
Total liabilities	750	1,153
Stockholders' equity
Common stock, $0.0001 par value, 100,000,000 shares authorized; 4,825,552 and 2,010,028 shares issued at December 31, 2019 and 2018, respectively; 4,825,549 and 2,010,025 shares outstanding at December 31, 2019 and 2018, respectively
Additional paid-in-capital	155,062	152,445
Treasury stock, at cost, 3 shares at December 31, 2019 and 2018	(264)	(264)
Accumulated deficit	(144,266)	(140,083)
Total stockholders' equity	10,532	12,098
Total liabilities and stockholders' equity	11,282	13,251
Series D Preferred Stock
Stockholders' equity
Preferred Stock
Series D-1 Preferred Stock
Stockholders' equity
Preferred Stock