Stablecoin interoperability is turning into a fight for the routing layer

The stablecoin market is moving into a new phase, and the next competitive fault line looks less like an issuer race than an infrastructure race. For the past two years, most of the conversation centered on who would mint compliant digital dollars at scale and which jurisdictions would authorize them. That question still matters, but the more immediate commercial battle is shifting toward the software and network layer that decides how digital money moves between banks, wallets, payment rails and tokenized balance sheets. In practical terms, the winner may not be the firm that creates another dollar token, but the one that controls how different dollar instruments are routed, converted and settled.

Recent industry coverage has framed the strategic prize as the orchestration layer rather than the token itself, and that reading matches what the market is now showing in real time. Stablecoins are no longer being discussed only as standalone crypto products. They are being positioned as one option inside a broader money stack that also includes tokenized deposits, traditional bank money and programmable settlement tools. Once that happens, interoperability stops being a purely technical upgrade and becomes a control point with real economic value.

A concrete example arrived this week in South Korea, where Dunamu, the operator of Upbit, said it signed a strategic partnership with Visa focused on stablecoin-based payments, cross-border remittances and AI-enabled financial services. Dunamu’s announcement described a roadmap presented at Visa’s Global Market Support Center in San Francisco and emphasized connecting digital assets with existing financial infrastructure under a safer and more transparent framework. Reporting around the deal also showed that OpenUSD is one of several stablecoin projects under review rather than the predetermined winner. That detail matters. It suggests the commercial objective is not to lock the partnership into a single token, but to build an open structure that can support multiple stablecoins and payment flows as regulation, liquidity and user demand evolve.

The policy backdrop is also becoming sharper. In a Jackson Hole speech on Friday, BIS General Manager Pablo Hernández de Cos argued that tokenized deposits look more promising than stablecoins for day-to-day payments and wholesale settlement in advanced economies because they fit more naturally inside the existing two-tier monetary system and preserve the singleness of money at par. He did not argue that stablecoins disappear. Instead, he drew a line between system-level money functions and more specialized use cases, saying stablecoins could still serve roles such as decentralized finance if they operate under robust redemption, transparency and conduct standards. That is an important signal for product builders: policymakers are not only asking whether digital money works, but which design should sit at the center of mainstream settlement.

Taken together, those developments point to a market where interoperability is becoming the real moat. If banks maintain tokenized deposits, payment networks support cross-border acceptance, and stablecoin issuers keep expanding distribution, somebody has to determine which instrument gets used for a given transaction. That routing decision can influence fees, foreign-exchange spreads, compliance checks, settlement speed, liquidity sourcing and even who retains the customer relationship. In other words, the money layer may fragment by issuer and legal form, while the value concentrates in the systems that make the fragmentation manageable.

That has direct implications for incumbent issuers and newer infrastructure projects alike. Circle and PayPal may benefit from broader acceptance of regulated stablecoins, but banks will resist any setup that reduces them to passive reserve and compliance providers underneath third-party payment apps. Meanwhile, institutions building tokenized cash, fund or collateral products will want the same interoperability benefits without surrendering control of balance-sheet economics. The result is likely to be a market with more shared standards, more wallet and treasury integrations, and more competition over the software that handles conversion and settlement logic behind the scenes.

For RWA markets, this is a meaningful development because tokenized assets do not scale cleanly without equally credible tokenized cash rails. The more real-world assets move onchain, the more important it becomes to have settlement instruments that can travel across issuers, venues and jurisdictions without introducing unnecessary credit, redemption or operational friction. Stablecoin regulation will still shape the field, but the next durable advantage may belong to the networks that make multiple forms of digital money behave like one usable financial system. That is where the commercial battle appears to be heading now.