0001 - Document - Document and Entity Information link:presentationLink link:definitionLink link:calculationLink 0002 - Statement - Consolidated Balance Sheets link:presentationLink link:definitionLink link:calculationLink 0003 - Statement - Consolidated Balance Sheets (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 0004 - Statement - Consolidated Statements of Operations link:presentationLink link:definitionLink link:calculationLink 0005 - Statement - Consolidated Statements of Comprehensive Loss link:presentationLink link:definitionLink link:calculationLink 0006 - Statement - Consolidated Statements of Changes in Stockholders' Equity link:presentationLink link:definitionLink link:calculationLink 0007 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 0008 - Disclosure - Background and Basis of Presentation link:presentationLink link:definitionLink link:calculationLink 0009 - Disclosure - Significant Accounting Policies link:presentationLink link:definitionLink link:calculationLink 0010 - Disclosure - Impairment of Long-Lived Assets link:presentationLink link:definitionLink link:calculationLink 0011 - Disclosure - Short-Term Investments link:presentationLink link:definitionLink link:calculationLink 0012 - Disclosure - Marketable Securities link:presentationLink link:definitionLink link:calculationLink 0013 - Disclosure - Other Receivables link:presentationLink link:definitionLink link:calculationLink 0014 - Disclosure - Deposits link:presentationLink link:definitionLink link:calculationLink 0015 - Disclosure - Land Use Rights, Net link:presentationLink link:definitionLink link:calculationLink 0016 - Disclosure - Digital Assets link:presentationLink link:definitionLink link:calculationLink 0017 - Disclosure - Property and Equipment, net link:presentationLink link:definitionLink link:calculationLink 0018 - Disclosure - Goodwill and Intangible Assets link:presentationLink link:definitionLink link:calculationLink 0019 - Disclosure - Loans Receivable link:presentationLink link:definitionLink link:calculationLink 0020 - Disclosure - Accrued Expenses and Other Current Liabilities link:presentationLink link:definitionLink link:calculationLink 0021 - Disclosure - Loans Payable link:presentationLink link:definitionLink link:calculationLink 0022 - Disclosure - Income Taxes link:presentationLink link:definitionLink link:calculationLink 0023 - Disclosure - Related Party Transactions link:presentationLink link:definitionLink link:calculationLink 0024 - Disclosure - Commitments and Contingencies link:presentationLink link:definitionLink link:calculationLink 0025 - Disclosure - Stockholders' Equity link:presentationLink link:definitionLink link:calculationLink 0026 - Disclosure - Segment Data link:presentationLink link:definitionLink link:calculationLink 0027 - Disclosure - Subsequent Events link:presentationLink link:definitionLink link:calculationLink 9960701 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:definitionLink link:calculationLink 9960702 - Disclosure - Significant Accounting Policies (Tables) link:presentationLink link:definitionLink link:calculationLink 9960703 - Disclosure - Short-Term Investments (Tables) link:presentationLink link:definitionLink link:calculationLink 9960704 - Disclosure - Marketable Securities (Tables) link:presentationLink link:definitionLink link:calculationLink 9960705 - Disclosure - Land Use Rights, Net (Tables) link:presentationLink link:definitionLink link:calculationLink 9960706 - Disclosure - Digital Assets (Tables) link:presentationLink link:definitionLink link:calculationLink 9960707 - Disclosure - Property and Equipment, net (Tables) link:presentationLink link:definitionLink link:calculationLink 9960708 - Disclosure - Goodwill and Intangible Assets (Tables) link:presentationLink link:definitionLink link:calculationLink 9960709 - Disclosure - Loans Receivable (Tables) link:presentationLink link:definitionLink link:calculationLink 9960710 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables) link:presentationLink link:definitionLink link:calculationLink 9960711 - Disclosure - Loans Payable (Tables) link:presentationLink link:definitionLink link:calculationLink 9960712 - Disclosure - Income Taxes (Tables) link:presentationLink link:definitionLink link:calculationLink 9960713 - Disclosure - Commitments and Contingencies (Tables) link:presentationLink link:definitionLink link:calculationLink 9960714 - Disclosure - Stockholders' Equity (Tables) link:presentationLink link:definitionLink link:calculationLink 9960715 - Disclosure - Segment Data (Tables) link:presentationLink link:definitionLink link:calculationLink 9960716 - Disclosure - Background and Basis of Presentation (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960717 - Disclosure - Significant Accounting Policies (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960718 - Disclosure - Significant Accounting Policies - Schedule of estimated useful lives of property and equipment (Details) link:presentationLink link:definitionLink link:calculationLink 9960719 - Disclosure - Significant Accounting Policies - Schedule of financial assets measured at fair value on a recurring basis (Details) link:presentationLink link:definitionLink link:calculationLink 9960720 - Disclosure - Significant Accounting Policies - Schedule of basic and diluted net loss per common share (Details) link:presentationLink link:definitionLink link:calculationLink 9960721 - Disclosure - Significant Accounting Policies - Schedule of securities are excluded from calculation of weighted average dilutive common shares (Details) link:presentationLink link:definitionLink link:calculationLink 9960722 - Disclosure - Significant Accounting Policies - Schedule of in-person revenue (Details) link:presentationLink link:definitionLink link:calculationLink 9960723 - Disclosure - Significant Accounting Policies - Schedule of revenue recognized (Details) link:presentationLink link:definitionLink link:calculationLink 9960724 - Disclosure - Impairment of Long-Lived Assets (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960725 - Disclosure - Short-Term Investments (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960726 - Disclosure - Short-Term Investments - Schedule of short-term investments (Details) link:presentationLink link:definitionLink link:calculationLink 9960727 - Disclosure - Marketable Securities (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960728 - Disclosure - Marketable Securities - Schedule of marketable securities balance (Details) link:presentationLink link:definitionLink link:calculationLink 9960729 - Disclosure - Other Receivables (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960730 - Disclosure - Deposits (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960731 - Disclosure - Land Use Rights, Net (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960732 - Disclosure - Land Use Rights, Net - Schedule of land use rights (Details) link:presentationLink link:definitionLink link:calculationLink 9960733 - Disclosure - Digital Assets (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960734 - Disclosure - Digital Assets - Schedule of digital assets (Details) link:presentationLink link:definitionLink link:calculationLink 9960735 - Disclosure - Property and Equipment, net (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960736 - Disclosure - Property and Equipment, net - Schedule of property and equipment (Details) link:presentationLink link:definitionLink link:calculationLink 9960737 - Disclosure - Goodwill and Intangible Assets (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960738 - Disclosure - Goodwill and Intangible Assets - Schedule of changes in goodwill (Details) link:presentationLink link:definitionLink link:calculationLink 9960739 - Disclosure - Goodwill and Intangible Assets - Schedule of intangible assets (Details) link:presentationLink link:definitionLink link:calculationLink 9960740 - Disclosure - Goodwill and Intangible Assets - Schedule of estimated future amortization expense (Details) link:presentationLink link:definitionLink link:calculationLink 9960741 - Disclosure - Loans Receivable (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960742 - Disclosure - Loans Receivable - Schedule of roll forward of loans receivable (Details) link:presentationLink link:definitionLink link:calculationLink 9960743 - Disclosure - Accrued Expenses and Other Current Liabilities - Schedule of accounts payable and accrued liabilities (Details) link:presentationLink link:definitionLink link:calculationLink 9960744 - Disclosure - Loans Payable (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960745 - Disclosure - Loans Payable - Schedule of roll forward loans payable balance (Details) link:presentationLink link:definitionLink link:calculationLink 9960746 - Disclosure - Income Taxes (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960747 - Disclosure - Income Taxes - Schedule of U.S. and foreign components of loss before income taxes (Details) link:presentationLink link:definitionLink link:calculationLink 9960748 - Disclosure - Income Taxes - Schedule of income tax provision (benefit) (Details) link:presentationLink link:definitionLink link:calculationLink 9960749 - Disclosure - Income Taxes - Schedule of reconciliation of the expected tax expense (benefit) based on U.S. federal statutory rates (Details) link:presentationLink link:definitionLink link:calculationLink 9960750 - Disclosure - Income Taxes - Schedule of reconciliation of the expected tax expense (benefit) in dollars based on U.S. federal statutory rates (Details) link:presentationLink link:definitionLink link:calculationLink 9960751 - Disclosure - Income Taxes - Schedule of tax effects of temporary differences that give rise to deferred tax assets (Details) link:presentationLink link:definitionLink link:calculationLink 9960752 - Disclosure - Related Party Transactions (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960753 - Disclosure - Commitments and Contingencies (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960754 - Disclosure - Commitments and Contingencies - Schedule of right-of-use assets and liabilities (Details) link:presentationLink link:definitionLink link:calculationLink 9960755 - Disclosure - Commitments and Contingencies - Schedule of operating lease liabilities (Details) link:presentationLink link:definitionLink link:calculationLink 9960756 - Disclosure - Stockholders' Equity (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink 9960757 - Disclosure - Stockholders' Equity - Schedule of option activity (Details) link:presentationLink link:definitionLink link:calculationLink 9960758 - Disclosure - Stockholders' Equity - Schedule of options outstanding and exercisable (Details) link:presentationLink link:definitionLink link:calculationLink 9960759 - Disclosure - Stockholders' Equity - Schedule of warrant activity (Details) link:presentationLink link:definitionLink link:calculationLink 9960760 - Disclosure - Segment Data - Schedule of segment information (Details) link:presentationLink link:definitionLink link:calculationLink 9960761 - Disclosure - Segment Data - Schedule of assets by geographic location (Details) link:presentationLink link:definitionLink link:calculationLink 9960762 - Disclosure - Segment Data - Schedule of revenues from geographical areas (Details) link:presentationLink link:definitionLink link:calculationLink 9960763 - Disclosure - Subsequent Events (Narrative) (Details) link:presentationLink link:definitionLink link:calculationLink