Overview of Key Overnight Developments on July 9

21:00 (UTC+8) - 7:00 Keywords: Rally, Tether, BioSig 1. OpenSea acquires Rally Wallet; 2. Trump: Congress should investigate Powell; 3. Trump: Tariffs will take effect on August 1, 2025; 4. Tether holds $8 billion worth of gold in secret Swiss vaults; 5. Trump: If Powell misled Congress regarding the renovation case, he should resign immediately; 6. The US sanctions North Korean IT personnel, accusing them of assisting cyber espionage and cryptocurrency theft; 7. BioSig and Streamex sign a $1.1 billion financing agreement for gold tokenization on Solana.