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Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Cash flows from operating activities:      
Net loss $ (4,534,397) $ (9,357,196) $ (5,634,971)
Adjustments to reconcile net loss to net cash used in operating activities:      
Provision for doubtful accounts 11,452 3,138
Impairment loss of property and equipment 1,827,373 307,733
Impairment loss of intangible assets 4,248,085 3,144,053
Depreciation of property and equipment 675,723 898,968 28,950
(Gain)/Loss from selling short-term investments (35,771) 78,693
Exchange gains and losses 9,870 6,844
(Gain)/Loss on market price of short-term investment (212,426) 229,536
Loss on market price of crypto assets 215,397
Interest income from short-term investment and providing loans (192,790) (72,291)
Interest cost of convertible note and borrowing Filecoins 452,752 410,548
Financial advisory fees for convertible note 450,000
Stock-based compensation 77,500 558,395
Loss from disposal of subsidiaries 4,664
Loss from disposal of intangible assets 29,968
Other expenses/(income) 32,271 23,318
Changes in operating assets and liabilities, net of effect of acquisitions:      
Digital assets generated from mining business (513,431) (285,928) (783,438)
Digital assets used to pay expenses 23,255
Prepaid expenses and other current assets (1,390,543) (176,360) 1,281,109
Right-of-use assets 317,774 317,774 (873,878)
Deferred tax assets 311,785 (91,364) (251,005)
Accounts payable (3,973) (22,075) 22,075
Advance from customers (40,000) 40,000 80,000
Accrued expenses and other current liabilities (201,560) 419,793 (87,867)
Lease liabilities (352,178) (269,675) 904,132
Deferred tax liabilities 25,200
Net cash used in operating activities (3,574,217) (2,789,415) (1,551,357)
Cash flows from investing activities:      
Disposal of digital assets 968,934
Cash from selling short-term investments 1,939,850 3,434,764
Cash from receiving short-term investment interests and dividends 221,146 48,089
Payments for purchasing property and equipment (2,611) (3,808) (7,222)
Payments for purchasing property and equipment, as well as refunds under the cancellation agreement 2,000,000 (3,000,000)
Cash paid for short-term investments (364,531) (8,038,049)  
Cash paid for long-term equity investments (160,000)
Advance payment for acquisition (120,000)
Loan to affiliate person (25,000)
Net cash (used in)/provided by investing activities 3,793,854 (7,839,004) 936,712
Cash flows from financing activities:      
Issuance of common stock 10,010,700 11,000,000 7,900,300
Borrowings 400,000
Cash paid for debt (579,875)
Convertible notes (1,500,000) 9,000,000
Financing costs (930,000) (700,000)
Net cash provided by continuing operations 7,580,700 19,300,000 7,720,425
Net cash provided by discontinued operations
Net cash provided by financing activities 7,580,700 19,300,000 7,720,425
Effect of exchange rate changes by continuing operations 45 (505) (8,543)
Effect of exchange rate changes by discontinued operations
Effect of exchange rate changes 45 (505) (8,543)
Increase in cash and cash equivalents 7,800,382 8,671,076 7,097,237
Cash and cash equivalents, beginning of the year 16,208,949 7,537,873 440,636
Cash and cash equivalents of continuing operations, end of the year 24,009,331 16,208,949 7,537,873
Cash and cash equivalents of discontinued operations, end of the year
Cash and cash equivalents, end of the year 24,009,331 16,208,949 7,537,873
Supplement disclosure of cash flow information Interest paid