According to Crypto Rover, Bitcoin has entered the euphoria/greed zone on the NUPL (Net Unrealized Profit/Loss) indicator. This signal historically precedes significant price increases, as seen in 2017 when it appeared at $1.3K before Bitcoin peaked at $20K, and in 2021, when it flashed at $20K before the price rose to $64K. The indicator has been showing this signal for two months, suggesting traders should closely monitor potential market movements (source: Crypto Rover).