| SEGMENT REPORTING |
21. SEGMENT REPORTING The Group continually monitors the reportable segments for changes in facts and circumstances to determine whether changes in the identification or aggregation of operating segments are necessary. In December 2020, the Group announced the entrance into the cryptocurrency industry. As of June 30, 2021, the Group have completed the transformation of its business to become a cryptocurrency mining enterprise. In accordance with ASC topic 280, “Segment Reporting”, the Group’s chief operating decision maker has been identified as the Board of Directors and the chief executive officer, who makes resource allocation decisions and assesses performance based on the different business operating results. As a result, the Group has three reportable segments, including the mining pool business, the data center business and the cryptocurrency mining. The Group’s other business, mainly consisting of online gaming in Europe, was not material for the six months ended June 30, 2021 and 2022. The following table presents summary information by segment for the six months ended June 30, 2021 and 2022, respectively. | | | | | | | For the six months ended June 30, | | | 2021 | | 2022 | | | US$ | | US$ | Reportable segment revenue: | | | | | Mining pool | | 413,650 | | 450,780 | Data center | | 11,424 | | 3,394 | Cryptocurrency mining | | 11,378 | | 37,823 | Others | | 1,553 | | 200 | Total segment and consolidated revenue | | 438,005 | | 492,197 | Reportable segment cost of revenue-exclusive depreciation and amortization: | | | | | Mining pool | | (405,347) | | (447,997) | Data center | | (8,567) | | (4,319) | Cryptocurrency mining | | (4,821) | | (13,700) | Others | | (1,753) | | (2,050) | Total segment and consolidated cost of revenue-exclusive depreciation and amortization | | (420,488) | | (468,066) | Reportable segment cost of revenue-depreciation and amortization: | | | | | Mining pool | | (1,234) | | (4,748) | Data center | | (1,610) | | (2,343) | Cryptocurrency mining | | (3,845) | | (14,241) | Others | | (84) | | — | Total segment and consolidated cost of revenue-depreciation and amortization | | (6,773) | | (21,332) | Total segment and consolidated cost | | (427,261) | | (489,398) | Reconciling items: | | | | | Operating expenses | | (9,906) | | (14,887) | Other operating income | | 46 | | 276 | Government grant | | — | | 9 | Other operating expenses | | (434) | | (1,515) | Net loss on disposal of cryptocurrencies | | (8,634) | | (2,057) | Impairment of cryptocurrency assets | | (8,863) | | (12,620) | Changes in fair value of derivative instrument | | 836 | | — | Impairment of property and equipment | | — | | (836) | Changes in fair value of contingent considerations | | — | | 1,247 | Operating loss from continuing operations | | (16,211) | | (27,584) | Other income, net | | 280 | | 554 | Interest income | | 37 | | 106 | Interest expense | | (709) | | (218) | (Loss) gain from equity method investments | | (859) | | 151 | Gain on previously held equity method investment | | 5,500 | | — | Gain from disposal of a subsidiary | | 126 | | — | Net loss from continuing operations | | (11,836) | | (26,991) |
21. SEGMENT REPORTING (continued) The following table presents the revenue from continuing operations by geographical locations for the six months ended June 30, 2021 and 2022, respectively. | | | | | | | For the six months ended June 30, | Revenues | | 2021 | | 2022 | | | US$ | | US$ | Hong Kong | | 97 | | 27,613 | USA | | — | | 7,782 | Kazakhstan | | — | | 6,014 | Europe | | 1,446 | | 8 | Mainland China | | 22,812 | | — | Blockchain | | 413,650 | | 450,780 | | | 438,005 | | 492,197 |
The following table presents the long-lived assets (including property and equipment, net and right-of-use assets) by geographical locations as of December 31, 2021 and June 30, 2022, respectively. | | | | | Long-lived assets | | As of December 31, 2021 | | As of June 30, 2022 | | | US$ | | US$ | USA | | 35,873 | | 23,709 | Hong Kong | | 31,745 | | 26,442 | Mainland China | | 6,435 | | 564 | Kazakhstan | | 2,310 | | 1,421 | Europe | | 2 | | 1 | | | 76,365 | | 52,137 |
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