On Friday, March 15, 2025, the US Treasury shocked the world by making a pilot payment of US$50 million in public debt using Bitcoin. The initiative, approved on an experimental basis by Congress, aims to test the viability of cryptocurrencies in official transactions. The $BTC jumped 10% after the announcement, while Wall Street divided opinions: some see a milestone for global adoption, others fear fiscal instability. "We are modernizing the financial system," said the Treasury Secretary. Will this be the beginning of an era in which Bitcoin replaces the dollar in Washington?