The emergence of central bank digital currencies (CBDCs) is challenging the dominance of stablecoins in the blockchain economy. Stablecoins have traditionally served as a bridge between traditional finance and the crypto ecosystem, but the rise of CBDCs is reshaping this dynamic. The article contrasts the technological, regulatory, and monetary sovereignty aspects of stablecoins and CBDCs, highlighting the differing approaches of the U.S. and China. While the U.S. favors market-driven innovation, China emphasizes state-led control. As CBDCs gain traction, particularly in cross-border payments, they may offer superior credit and regulatory advantages over stablecoins. This shift could lead to a gradual decline in the role of stablecoins, transitioning them from a core asset to one of many options in a diversified digital financial landscape. The evolution of global regulatory frameworks will play a crucial role in this transition.