**[Analysis: Bitcoin Approaches $80,000 Key Level, Institutional Funds and Whale Purchases Provide Support but Breakthrough Yet to Be Confirmed]** Odaily Planet Daily News: Bitcoin is once again approaching the $80,000 threshold, with market analysis suggesting that this level has become a critical resistance point to test the strength of the current rebound. On the funding side, institutional inflows continue to provide support. Data shows that Bitcoin spot ETFs have seen net inflows for six consecutive days, while Ethereum spot ETFs have recorded nine straight days of increases, indicating a recovery in risk appetite. Meanwhile, whale addresses holding over 1,000 BTC have accumulated approximately 270,000 BTC over the past 30 days, marking the largest monthly increase since 2013, with exchange reserves dropping to a seven-year low. On-chain data from Glassnode indicates that Bitcoin has regained its "realized market price" (around $78,100), but the short-term holder cost basis is approximately $80,100, forming a direct pressure zone. Once the price touches this range, over 54% of short-term investors will enter a profitable state, which historically often corresponds to the peak of rebound phases. At the same time, perpetual contract funding rates remain negative, suggesting heavy short positions. With spot demand continuing to improve, this could provide short-squeeze momentum for subsequent price increases. In summary, although the funding structure and market resilience have improved, $80,000 remains a critical dividing line, and the market has yet to confirm whether it can turn this resistance level into support. (The Block)