Bitcoin (BTC/USD) has held the key lower boundary support zone (approximately $87,000 to $88,890) at the beginning of 2026, which includes the closing price of 2025. Subsequently, the price retreated to the lower part of the upper boundary, which is defined by the center pivot point at $88,890 and the Micro 1 indicator at $90,966. As of January 5, the price is trading around $91,200, indicating it has initially touched the upper boundary area. The recent key reference point is the opening price of 2025 (about $93,288). For the price to continue rising, it must stay above $90,966; if it falls below the pivot point at $88,890, it may return to the lower boundary support zone.