Toss Bank to pilot blockchain banking on Solana

Toss Bank, a South Korean digital lender, will pilot a blockchain-based financial infrastructure on the Solana network in South Korea. The pilot will test whether Solana can support banking services and settlement processes and will be limited to internal systems and selected testing partners rather than public retail customers.

The bank will evaluate permissioned and hybrid implementations on Solana, running controlled tests of network stability, transaction finality and integration with existing payment rails. Work will include connecting Toss Bank ledgers to Solana nodes, monitoring transaction performance and verifying compliance with local banking rules.

Technical goals include measuring latency under realistic load, calculating costs per transaction against current clearing methods and testing interoperability with account and payment systems. The pilot will also examine auditability and traceability on a blockchain ledger and methods for controlling access to sensitive financial data.

Solana is a public Proof-of-Stake blockchain known for high throughput and low transaction costs. Its architecture is designed to process thousands of transactions per second, characteristics that companies consider for faster settlement and programmable asset support.

Regulatory oversight will shape the pilot's scope. South Korean banking regulators require rules on consumer protection, anti-money laundering and data security. Any move to production would need approval from regulators and internal compliance reviews, and the pilot may allow regulators to observe technical safeguards.

Toss Bank is part of the Toss fintech ecosystem, which offers mobile payments, personal finance and investment services in South Korea. The bank has carried out digital innovation projects and described the pilot as research and development to test distributed ledger technology for back-office functions and potential customer products.

No timeline for a production rollout has been announced. Results from the tests will inform internal decisions about which processes may use blockchain technology and what additional controls are required. Future experiments could include trials of tokenized financial instruments, automated settlement contracts and cross-border payment proofs, all subject to regulatory approval.