While tensions and tariffs between the USA and China shake the markets, there is an increasingly evident move that could change everything: the integration of stablecoins into the global financial system.

The United States, caught between record public debt and a dollar under pressure, is looking at stablecoins as a way to digitize the dollar without losing control of it. In practice, bringing finance on-chain but with Wall Street's rules.

With Europe already ahead with the MiCA regulation, China pushing its Digital Yuan, and the BRICS countries working on an alternative system to the dollar, Washington cannot stand still. The regulated adoption of stablecoins — such as USDC or a future "FedCoin" — could become the way out to avoid a crash, keeping the dollar as the reference currency even in the digital era.

In a rapidly changing world, stablecoins could be the United States' last card to remain at the center of the global financial system. And while the race toward sovereign digital currencies accelerates, the real challenge will be deciding who will control the new infrastructure of money: states, banks, or blockchains.

However, this weapon is double-edged. The hybrid nature of stablecoins — neither true state currencies nor completely decentralized crypto — hides a paradox. On one hand, they inherit the stability of the dollar and the efficiency of crypto; on the other, they depend entirely on trust in their reserves. A collapse of a major stablecoin, as taught by the Terra/Luna case, could trigger the systemic panic one seeks to prevent.

The real testing ground will be control of the infrastructure: not only "who" but "how". On one side is the banking model, which replicates the existing system. On the other are permissionless blockchains, where completely new forms of finance are born. The attempt to apply Wall Street's rules to borderless technologies risks further fragmenting the system, pushing innovation toward more open jurisdictions.

All'orizzonte non c'è un vincitore unico, ma un mondo finanziario diviso in blocchi: the digital dollar, the digital yuan, free crypto, and the BRICS alternative. The final challenge concerns the very essence of money: public good, private commodity, or open protocol?