#BigTechStablecoin refers to the attempts of large tech companies —such as Meta (formerly Facebook), Google, or Amazon— to enter the world of cryptocurrencies through the creation or integration of stablecoins. These digital currencies are designed to maintain a stable value, typically linked to the dollar or another fiat currency, making them attractive for quick payments and transfers without the typical volatility of crypto. An emblematic example was Meta's Diem project (formerly Libra), which generated significant attention and also regulatory concerns globally. The idea that companies with billions of users can issue their own currency poses significant challenges for traditional financial systems, central banks, and user privacy. Furthermore, it opens the debate on the concentration of economic power in the hands of tech corporations. #BigTechStablecoin represents the intersection of financial innovation and digital dominance, where monetary stability, economic sovereignty, and user rights are at stake. Understanding this phenomenon is key to anticipating the future of global finance.