The Bitcoin (CRYPTO: BTC) rally has cooled after peaking at $73,750.07 on March 14th. However, the leading cryptocurrency has shown some signs of upward momentum since the weekend. Against this backdrop, “Rich Dad, Poor Dad” author Robert Kiyosaki took to social media on Monday to urge investors to buy Bitcoin. Kiyosaki’s Bullish Call Cites Halving Event Kiyosaki stated his intention to purchase 10 more bitcoins before April, specifically citing the upcoming “halving” as his motivation. He acknowledged affordability concerns for some investors, suggesting, “If you can’t afford a whole Bitcoin …