BTC/USD – Key Zones & Market StructureBitcoin / U.S. dollarBITSTAMP:BTCUSDFICTradesBitcoin has made a strong upward move from the 77,000–77,600 area, showing strong momentum and a clear change in short-term structure. Price is now approaching an important 81,400–81,950 zone, which has previously attracted significant reactions. I have marked this area as the upper reaction zone. At the same time, the 77,000–77,600 region remains an important lower zone. This area acted as a base before the recent upward expansion. 🔎 What I’m Watching 81,400–81,950: Major upper reaction area. 77,000–77,600: Important lower support/base area. Price is currently consolidating beneath the upper zone. A strong move through the upper zone could indicate continuation of the current momentum. Rejection from the upper zone could bring price back toward lower levels. The reaction around these zones is more important than predicting the next candle.