According to Miles Deutscher on Twitter, he entered the cryptocurrency market in 2019, highlighting a significant period when Bitcoin and altcoins were recovering from the 2018 bear market lows (source: @milesdeutscher, April 25, 2025). For traders, 2019 marked the start of renewed upward momentum, with Bitcoin rising from below $4,000 to over $13,000 within a few months, offering strong swing trading opportunities and setting the stage for the subsequent 2020-2021 bull run. Understanding entry points like 2019 can help traders analyze market cycles and identify optimal buying periods based on historical trends (source: CoinMarketCap historical data).