JPMorgan's Kinexys Lands Major Win as South Korea's Largest Bank Adopts Blockchain Payments

KB Kookmin Bank, the largest financial institution in South Korea, is expanding its use of blockchain technology with JPMorgan’s Kinexys network. The bank is reportedly launching a new cross-border payment service next month focusing on corporate clients. With this move, JPMorgan is strengthening its presence in South Korea’s traditional finance (TradFi), with KB Kookmin Bank becoming the first bank to adopt the blockchain.

The latest move marks another major example in the growing use of blockchain in the TradFi space. Not only in South Korea, but conservative financial giants across the globe are embracing blockchain and crypto.

KB Kookmin Bank brings JPMorgan’s Kinexys to South Korea

According to the latest reports, KB Kookmin Bank is planning to integrate JPMorgan’s Kinexys network to streamline everyday corporate banking in South Korea. The bank has already unveiled plans to launch a new blockchain-based cross-border payment service in August 2026.

KB Kookmin Bank, an affiliate of KB Financial Group, has now become the first South Korean bank to use the Kinexys blockchain for corporate payment settlements. This marks a major milestone for the country’s traditional financial ecosystem, as well as the broader adoption of blockchain technology.

Kinexys is JPMorgan’s blockchain platform concentrating on institutional clients. It was previously known as Onyx. The platform supports programmable payments, tokenized deposits, and digital asset settlements. The network thus helps financial institutions automate and simplify complex transactions.

How does the new payment service work?

Notably, the new payment service focuses on businesses involved in international trade, especially importers and exporters. In the beginning, the service intends to support US dollar transfers between South Korea and nine countries. These international players include the United States, Singapore, Saudi Arabia, India, Thailand, Qatar, the United Arab Emirates, Bahrain, and South Africa. The service will be available to customers via KB Kookmin Bank’s branches in South Korea and Singapore.

Usually, traditional cross-border payments are less attractive. This is because it takes several days to complete a transaction as it often passes through several intermediary banks. This is what prompted the South Korean bank to adopt JPMorgan’s Kinexys to support a blockchain-based payment system. Thus, the cross-border payments could be done more efficiently, enabling real-time settlement.  

South Korea’s banking sector is pushing deeper into blockchain

It is important to note that KB Kookmin Bank’s latest partnership with JPMorgan marks only a small part of the growing collaborations between TradFi and crypto companies in South Korea. Under the government’s regulatory guidelines, more financial institutions are working on real-world utilities of blockchain technology.

For instance, South Korea’s KBank has already partnered with payments giant Ripple to test blockchain-based cross-border settlements. The bank is using Ripple’s Palisade digital wallet in a multi-phase pilot project to make international payments easier and faster. Recently, as CoinCodex reported, South Korea’s Mirae Asset acquired a portion of the crypto exchange Korbit, becoming one of the largest shareholders of the platform.

Earlier this year, South Korea’s Ministry of Economy and Finance chose a regulatory sandbox project that utilizes tokenized bank deposits for public-sector payments. This comes as part of the government’s move to modernize its fund management and distribution practices. The initiative is expected to go live in the fourth quarter of 2026. Nine banks, including KB Kookmin Bank, Shinhan Bank, Woori Bank, and Hana Bank, are participating in the project.