Sovereign Day 2025, hosted by Cosmos in Buenos Aires on December 16, brought policymakers, commercial banks, enterprise builders, and blockchain developers into the same room to debate one question: can public blockchain infrastructure handle serious financial use cases? The answer that emerged leaned heavily toward yes, with stablecoins and interoperable sovereign chains positioned as the architecture most likely to get institutions over the line.

The event was not a pitch fest. Panels pulled from live examples: active government CBDC projects, a newly licensed yen-backed stablecoin in Japan, and Fortune 500 companies that had been building application-specific blockchains on the Cosmos stack ahead of announcements anticipated for early 2026. Those announcements had not been publicly confirmed at the time this article went to press.

Stablecoins as Plumbing, Not Speculation

The clearest consensus from Sovereign Day was that stablecoins have changed their category. They are no longer primarily discussed as yield instruments or trading pairs. Michael Kirchner of McKinsey & Company framed it plainly: stablecoins represent the primary entry point for financial institutions moving onto blockchain, driven by faster settlement times and lower operational costs compared to correspondent banking.

A parallel regulatory shift has accelerated this institutional turn. The US GENIUS Act, stablecoin legislation that advanced through Congress in 2025, has prompted regulators in multiple jurisdictions to accelerate their own frameworks in response, moving global stablecoin policy from fragmented restriction toward structured oversight.

That framing matches what is already happening in Sub-Saharan Africa and South Asia, where stablecoin adoption has been driven by remittances, informal trade, and access to dollar liquidity rather than by DeFi experimentation. According to regional data published by allbusiness.africa, stablecoins now account for 43 percent of Sub-Saharan Africa's on-chain transaction volume. Nigeria alone recorded $92.1 billion in on-chain volume in the year to June 2025, ranking sixth globally and second in grassroots adoption metrics. Ethiopia saw retail stablecoin transfers grow 180 percent year over year in the same period.

South Asia has tracked a comparable trajectory. Crypto adoption across the region grew approximately 80 percent between January and July 2025 compared with the prior year. Pakistan formalised its engagement with the sector by establishing a dedicated Crypto Council and the Pakistan Virtual Asset Regulatory Authority in 2025, signalling a deliberate shift toward structured oversight rather than suppression.

The Sovereign Day thesis that stablecoins are financial infrastructure is not theoretical in these markets. It is already the ground reality.

IBC as Neutral Interoperability

Cosmos Labs Co-CEO Maghnus Mareneck described the broader ambition at the event: Layer 1 blockchains built and deployed by institutions and governments to support national digital currencies, cross-border payments, and interbank settlement. The technical layer connecting those chains is the Inter-Blockchain Communication protocol, known as IBC.

IBC currently connects more than 115 chains and processes roughly $3 to $4 billion in monthly transfer value, with approximately 35 million transactions annually according to ecosystem estimates. What distinguishes it from competing interoperability approaches is its framing as a neutral layer with no single issuing chain or controlling party. That neutrality matters for governments wary of ceding settlement control to a foreign-domiciled network.

In 2025, Cosmos launched IBC Eureka, also referred to as IBC v2, which added Ethereum to the IBC network. The practical effect is that dollar stablecoins like USDC and USDT, which dominate African stablecoin volume, can now theoretically route through IBC-connected infrastructure rather than relying solely on bridge contracts.

Latin American CBDCs as a Template

Cosmos Labs and development firm Peersyst are currently building two central bank digital currency projects in Latin America. One involves the Colombian government and a banking consortium testing cross-border payments over IBC Eureka. The technical requirements for those projects, including configurable compliance rules, permissioned access, and jurisdiction-specific settlement finality, are the same requirements that regulators in Pakistan, Nigeria, Ghana, and Kenya have signalled interest in when discussing sovereign digital currency infrastructure.

The Cosmos SDK has been adopted by more than 200 projects and remains the most widely deployed modular blockchain framework. Its architecture allows a government to build a chain that looks and behaves like a traditional financial network to regulators while remaining interoperable with broader on-chain liquidity. Analysts covering the space have noted that combining those properties on general-purpose public chains has proved challenging.

Japan's Regulatory Model Draws Attention

Andy Hung of Pacific Meta highlighted Japan's newly licensed yen-backed stablecoin as a reference design for markets still working through regulatory frameworks. Japan's Financial Services Agency granted a Funds Transfer Service Provider licence to JPYC Inc. in October 2025, producing the first fully compliant yen-backed stablecoin under the country's revised Payment Services Act. SBI Holdings and Startale Group have announced a second yen stablecoin targeting a Q2 2026 launch; its status had not been confirmed at the time this article went to press.

The Japan model is notable because it frames stablecoin regulation as consumer protection rather than prohibition. That distinction is relevant for regulators in Nigeria and Bangladesh, both of which have pursued restrictive postures toward crypto that have pushed adoption underground without fully suppressing it. Pakistan, by contrast, has shifted course with the establishment of its Crypto Council and PVARA regulator in 2025. Japan's approach offers a legitimising precedent from within the Asia-Pacific region rather than requiring reference to US or EU frameworks.

What Comes Next

Cosmos is positioning its stack for an enterprise and government adoption cycle that moves well beyond its original developer community. At Cosmoverse 2025 in Split, Croatia, Cosmos Labs outlined a strategic direction toward institutional and sovereign deployment, a trajectory that Sovereign Day reinforced. The Cosmos SDK's market cap across its enabled ecosystem sits above $58 billion. With IBC Eureka expanding to Ethereum and a 2026 roadmap that includes Solana L2 networks, the interoperability infrastructure is broader than it has ever been. For developers building remittance tools, trade finance applications, or compliance-grade payment networks in South Asia and Africa, that stack has emerged as a credible candidate for production deployment.

Sources: Cosmos Blog, blockchain.news, IBC Protocol, Blockchain Council, All Business Africa, Crypto Reporter, Chainalysis