Overview of Key Overnight Developments on February 28

21:00-7:00 Keywords: Block, Amazon, Barclays, Prediction Market 1. Amazon: Amazon will invest $50 billion in OpenAI; 2. Block disclosed that it increased its holdings by 340 bitcoins in Q4, worth $22 million; 3. Barclays Bank is evaluating the construction of a blockchain platform to handle payment and deposit business; 4. OpenAI announced it has received a new investment of $110 billion at a valuation of $730 billion; 5. Former Mt.Gox CEO proposes a bitcoin hard fork to recover $5.2 billion in stolen assets; 6. Litigation director of an exchange: Some U.S. states are "misleading" the public on prediction market issues; 7. Vitalik published an article explaining Ethereum scaling plans, covering short-term gas optimizations and phased deployment of long-term ZK-EVM.