币界网报道：Bitcoin surged past $42,000 as the U.S. dollar index (DXY) hit a three-year low, fueling optimism in the crypto market. The weakening dollar, driven by expectations of Federal Reserve rate cuts in 2024, has historically correlated with stronger Bitcoin performance. Analysts note that Bitcoin's recent 15% weekly gain aligns with the DXY's decline, reinforcing its role as a hedge against fiat depreciation. Meanwhile, Ethereum and altcoins like Solana and Avalanche also saw significant gains, with ETH nearing $2,300. Market sentiment remains bullish as traders anticipate potential spot Bitcoin ETF approvals in early 2024, which could further drive institutional inflows. The crypto market cap has rebounded to $1.6 trillion, marking a 10% increase over the past week.