Consolidated Statements of Cash Flows - USD ($)	12 Months Ended		23 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019
Cash flows from operating activities
Net loss	$ (1,270,000)	$ (14,127,000)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	170,000	541,000
Amortization of operating lease right-of-use assets	90,000
Share-based compensation expenses	393,000	233,000
Provision of allowances for doubtful accounts	2,335,000	1,523,000
Impairment on intangible assets		3,330,000
Impairment on goodwill		5,211,000
Impairment on long-term investments		453,000
Change in fair value of warrant liabilities	(499,000)	(1,669,000)
Deferred taxes	(168,000)	764,000
Changes in operating assets and liabilities
Accounts receivable	699,000	(232,000)
Prepayment and deposit to suppliers	(5,221,000)	1,345,000
Due from related parties	145,000	(178,000)
Other current assets	7,000	25,000
Accounts payable	(2,441,000)	161,000
Advances from customers	973,000	(2,414,000)
Accrued payroll and other accruals	27,000	28,000
Other current liabilities	110,000	(307,000)
Taxes payable	265,000	(20,000)
Prepaid lease payment	(10,000)
Lease payment liability related to short-term leases	138,000
Net cash used in operating activities	(4,311,000)	(5,389,000)
Cash flows from investing activities
Payment for office equipment		(11,000)
(Investment to)/withdraw investment from investees	(36,000)	453,000
Short-term loan to unrelated parties		(2,107,000)
Collection of short-term loan from unrelated parties		4,676,000
Payment for acquisition of noncontrolling interest		(1,889,000)
Payment for blockchain platform applications development costs	(160,000)	(3,738,000)	$ (3,880,000)
Payment for purchase of software technology and other intangible assets	(1,962,000)	(431,000)
Net cash used in investing activities	(2,158,000)	(3,047,000)
Cash flows from financing activities
Proceeds from issuance of common stock and warrant (net of cash offering cost of US$15 and US$809, respectively)	4,787,000	10,263,000
Repayment to investors related to terminated security purchase agreements		(922,000)
Proceeds from short-term bank loan	435,000	907,000
Repayment of short-term bank loan	(870,000)	(756,000)
Net cash provided by financing activities	4,352,000	9,492,000
Effect of exchange rate fluctuation on cash, cash equivalents, and restricted cash	(22,000)	(266,000)
Net (decrease)/increase in cash, cash equivalents and restricted cash	(2,139,000)	790,000
Cash, cash equivalents, and restricted cash at beginning of the year	3,742	2,952
Cash, cash equivalents, and restricted cash at end of the year	1,603	3,742	$ 1,603
Supplemental disclosure of cash flow information
Income taxes paid
Interest expense paid	$ 42,000	$ 157,000