According to BlockBeats, Donald Trump Jr., the eldest son of U.S. President Donald Trump, has acquired shares in a social media company that is building a Bitcoin reserve. This move marks the latest investment by the Trump family in their strategy of using cryptocurrency as a treasury asset. The Los Angeles-based Thumzup Media Company disclosed in a recent filing that Trump Jr. holds 350,000 shares of the company. Based on the previous day's closing price of $12.36 per share, these shares are valued at over $4 million. A source close to Trump Jr. indicated that the purchase was made on the advice of his investment advisor, and he has no other affiliations with the company.