| Summary of derivative contracts |
| | | | | | | | | As of | | | | | | | January 1, | | As of December 31, | | | 2024 | | 2024 | | 2025 | Gross balance | | 7,816 | | 70,029 | | 42,057 | Fair value changes | | 52 | | (95) | | 84 | Less: allowance of credit losses (Note 3.1 (b)) | | — | | — | | — | Net carrying amount | | 7,868 | | 69,934 | | 42,141 |
| | | | | | | | | As of | | | | | | | January 1, | | As of December 31, | | | 2024 | | 2024 | | 2025 | BTC | | 2,135 | | 43,618 | | 10,940 | ETH | | 2,761 | | 3,099 | | 8,562 | USDS (Note) | | 1,260 | | 7,533 | | 6,896 | USDC | | 1,712 | | 182 | | 6,412 | USDT | | — | | 15,502 | | 9,331 | | | 7,868 | | 69,934 | | 42,141 |
Note: USDS is a cryptographic blockchain—based digital information unit token issued by the Group and only used in Group’s platform. Each USDS is equivalent to US$1.
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