Kaia Becomes South Korea’s Stablecoin Testing Ground Before Won Framework Arrives

Published by James Harris on July 6, 2026July 6, 2026

BNK Busan Bank and AhnLab Blockchain Company have completed a proof of concept for a won-backed stablecoin payment system on the Kaia blockchain, testing a full transaction lifecycle from issuance through settlement, with programmable restrictions on where and how the currency can be spent. The pilot passed all four performance scenarios, including a 24-hour continuous load test, with every transaction completing within one second.

The timing matters more than the technology. South Korea’s Digital Asset Basic Act has not yet established a clear legal framework for won-backed stablecoins, and Korean financial groups are racing to lock in infrastructure before that framework arrives. KB Financial Group ran a comparable Kaia pilot in May 2026, where a won stablecoin was converted to a dollar stablecoin for a cross-border remittance to Vietnam in under three minutes at roughly 87 percent lower cost than a SWIFT transfer. The pattern here echoes what happened in the EU before MiCA took effect: banks and fintechs built working rails ahead of the law, then used those rails as leverage in licensing discussions. South Korean lenders appear to be running the same playbook, with Kaia, an EVM-compatible layer-1 chain formed from the merger of Kakao’s Klaytn and LINE’s Finschia networks, emerging as the preferred proving ground.

The “policy-type” currency design is the detail most coverage will underplay. Programmable expiration dates and merchant-category restrictions embedded directly in the token’s code are exactly what local governments need to replace paper vouchers and regional subsidy programs.

Five parties split the technical responsibilities across the BNK Busan pilot: the bank handled policy-currency modeling and settlement validation; AhnLab managed wallet design and transaction structure; OpenAsset handled stablecoin issuance and asset consistency; Kaia provided the mainnet infrastructure; and Lambda256 ran node operations and transaction monitoring. That division of labor signals something about how Korean financial infrastructure deals are being structured, with banks taking the compliance and product layer while blockchain infrastructure providers handle the rails. The pilot also tested a fee-sponsorship model where end users paid no gas fees directly, which removes one of the main friction points that killed earlier retail blockchain payment experiments. AhnLab’s head Lim Ju-young stated the intent to extend the work into broader stablecoins, digital assets, and cross-border settlement.

Kaia is now the chain that two separate major Korean financial groups have chosen for won-stablecoin pilots within two months. That concentration is worth tracking not as a price catalyst but as a signal about which infrastructure layer Korean regulators will likely have to engage with first when the legal framework eventually arrives.