12. Conclusion

Japan is in an unusual position. The regulatory framework for stablecoins is clear. The country's industrial base, consisting of trading houses, banks, telecommunications carriers, retailers, and government institutions, contains both the scale and the disposition to bring regulated on-chain activity into everyday use. Yet, the challenging economics of JPY stablecoin issuance remains the largest barrier to achieving tangible on-chain, regulated activity in Japan. Without a yen-denominated stablecoin, payments and trading use cases remain blocked.

A public chain built for Japanese regulated activity, validated onshore under Japanese law, with compliance primitives at the platform layer, and with economic design that reflects the specific challenges facing JPY stablecoin issuers, is the missing piece. Each of the architectural choices for MIZUHIKI described in this whitepaper — sovereign validation, Ethereum equivalence, the paymaster, the Compliance Suite, the Identity layer, the tokenomics — reflects a specific view about what this infrastructure needs to do.

Mainnet launches in the third quarter of 2026. The Awaji testnet is live now, the developer portal and the MIZUHIKI ID beta are available for integration and evaluation. Issuers, payment service providers, system integrators, and enterprises planning regulated stablecoin activity are invited to engage through the MIZUHIKI's vision partner programme.

Our objective is to make MIZUHIKI the default settlement rail for regulated stablecoin payments in Japan. The broader thesis of this whitepaper is that sovereign public chains built on Ethereum-equivalent foundations will become the standard infrastructure of regulated digital finance, and that MIZUHIKI is the first serious example of that category.