Minna Bank opened Solana stablecoin study with Fireblocks and TIS

Minna Bank announced on July 4, 2025 that it had begun a joint study with Solana Japan, Fireblocks and Japanese information-technology company TIS into the possible commercialization of stablecoins and Web3 wallets. The project included technical verification of issuing a stablecoin on the Solana blockchain and examination of potential services for consumers and businesses.

The development mattered because Minna Bank was a regulated banking subsidiary of Fukuoka Financial Group, not a crypto-native issuer. The company described itself as Japan’s first digital bank, having started service in May 2021. Its decision placed public-blockchain infrastructure inside a formal banking-product study at a time when Japanese institutions were evaluating how to operate under the country’s stablecoin rules.

The announcement did not establish that Minna Bank had issued a stablecoin, accepted customer deposits through a blockchain product or received regulatory approval for a specific offering.

What the partners agreed to examine

The study began in July 2025 and covered both business-to-consumer and business-to-business applications. Minna Bank’s release identified three principal areas: technical verification for stablecoin issuance on Solana, trading of tokens backed by real-world assets, and the use of stablecoins and Web3 wallets in digital payments.

The participants assigned themselves distinct roles. Minna Bank would conduct verification directed toward possible stablecoin issuance. Solana Japan would provide blockchain expertise and technical support while coordinating with the wider Solana ecosystem. Fireblocks would contribute technology and expertise for token-issuance infrastructure and Web3 wallets. TIS would supply its experience building systems for financial institutions.

That division showed the components a bank expected to evaluate before offering an on-chain payment product: issuance controls, wallet infrastructure, blockchain integration and compatibility with established banking systems. It did not prove that those components had passed security, performance, compliance or customer-usability testing on July 4.

The releases supplied no token name, currency peg, reserve structure, smart-contract address or targeted circulation. They also gave no budget, completion date, launch commitment or participant count for any future customer trial. References to easier domestic and international digital-asset transactions were project objectives rather than measured results.

Japan’s regulatory framework shaped the experiment

Japan’s revised Payment Services Act framework for electronic payment instruments, the regulatory category encompassing qualifying fiat-linked stablecoins, took effect on June 1, 2023. The Financial Services Agency said issuance to people in Japan could require registration or authorization appropriate to the issuer’s legal structure, while businesses selling or exchanging electronic payment instruments generally required registration as electronic-payment-instrument service providers.

That framework made the Minna Bank study more consequential than a general blockchain research announcement. A banking group was testing how a public network and institutional custody infrastructure might support a product within an existing authorization, supervision and anti-money-laundering regime.

It also imposed a boundary on the event-day interpretation. Participation by a regulated bank did not itself make a prospective Solana token approved, insured or ready for public distribution. The cited records did not say that the Financial Services Agency had approved the proposed design, and they did not specify which entity would legally issue or intermediate any resulting instrument.

A study, not a launch

The verified July 4 development was therefore an institutional commitment to investigate commercialization. It demonstrated that Minna Bank had selected named technology partners and a named blockchain for technical work spanning issuance, payments, tokenized assets and wallets.

It did not demonstrate a functioning stablecoin, production transaction volume, customer adoption, lower costs or faster settlement. Those questions required later evidence such as regulatory filings, reserve documentation, contract records, security assessments and a defined pilot or launch. None was available in the July 4 announcement.