Bitcoin experienced a significant decline of over 5% during Asian trading hours on Tuesday, coinciding with the dollar index (DXY) reaching its highest level since mid-November. The unexpected expansion of U.S. factory activity in March, as revealed by Monday's data release, propelled the dollar index to surpass the 105.00 mark.

The leading cryptocurrency, Bitcoin, dropped below the $66,500 threshold, marking a bearish turn in its recent trading pattern which saw it consolidating between $68,000 and $72,000 over the past week. According to data from CoinDesk, Bitcoin's value fell to $66,342, with other major cryptocurrencies such as Ethereum (ETH), Solana's SOL, and Dogecoin (DOGE) also experiencing notable losses. The broader crypto market reflected these downturns, with the CoinDesk 20 index declining by nearly 8%.

The surge in the dollar index, which measures the dollar's strength against major fiat currencies, was accompanied by a four-week gain of 2.58%, reaching a level unseen in over four months. A stronger dollar typically leads to increased costs for dollar-denominated assets like Bitcoin and gold, potentially dampening demand. Moreover, a strengthened dollar often triggers financial constraints globally, reducing investors' appetite for risk-taking.

The Institute for Supply Management (ISM) released its manufacturing purchasing manager’s index (PMI) data on Monday, indicating an unexpected expansion in factory activity for the first time since September 2022. The PMI rose to 50.3 in March from February's 47.8, signaling a return to growth after 16 consecutive months of contraction. This uptick in manufacturing activity weakened the case for Federal Reserve rate cuts, as reflected in the decline in expectations for June's rate cut probability to below 50%.

Despite some market analysts foreseeing potential rapid rate cuts by the Fed due to mounting fiscal debt, others remain cautious, anticipating continued volatility in Bitcoin prices. With multiple job reports scheduled for release this week, alongside Bitcoin blockchain's impending mining reward halving later this month, uncertainty prevails in the crypto market. Traders are advised to monitor these developments closely as they navigate through the evolving landscape of digital assets.