Glassnode identified a key resistance zone for Bitcoin between $87,000 and $87,800 in Q4, warning that a breakout above this range could trigger significant volatility. The analysis, previously featured in the "Charting Crypto" report co-authored with Colin Basco and Coinbase Institutional, noted that BTC has consistently been capped by this level and is currently consolidating below it. While a move through the $87K–$87.8K band may lead to sharp price action, Glassnode highlighted another substantial supply cluster near $90,000 that could act as further upside pressure.