| Derivative contracts |
| | | | | | | | | | | | | | | December 31, | | June 30, | | | 2024 | | 2024 | | | Initial net | | Fair value | | Carrying | | Initial net | | Fair value | | Carrying | | | investment | | changes | | amount | | investment | | changes | | amount | | | US$ | | US$ | | US$ | | US$ | | US$ | | US$ | | | | | | | | | | | | | | Financial structured product denominated in digital assets | | 70,029,195 | | (94,963) | | 69,934,232 | | 21,075,160 | | — | | 21,075,160 | Total | | 70,029,195 | | (94,963) | | 69,934,232 | | 21,075,160 | | — | | 21,075,160 |
| 12. | Derivative contracts (Continued) |
The following table sets forth the fair values of derivative contracts by the Group as the end of the financial period/year: | | | | | | | December 31, | | June 30, | | | 2024 | | 2024 | | | US$ | | US$ | BTC | | 43,618,221 | | 12,254,284 | ETH | | 3,098,877 | | 3,984,126 | USDS (1) | | 7,533,455 | | 4,156,217 | USDC | | 181,803 | | 225,222 | USDT | | 15,501,876 | | 455,311 | Total | | 69,934,232 | | 21,075,160 |
| (1) | 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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