South Korea’s Toss, Optimism to Test Won Stablecoin in Proof of Concept

South Korean mobile payments app Toss, operated by Viva Republica, offers payment and fintech services. Its partnership with blockchain company Optimism will focus on privacy and compliance safeguards for a won-denominated stablecoin on a public blockchain, a key test of whether digital payments can meet regulatory requirements while preserving transaction confidentiality.

Viva Republica and Optimism will conduct a three-month proof of concept, or PoC, for the won stablecoin, according to the latest report. The trial will test privacy protections and compliance mechanisms for public-blockchain transactions. The companies have not disclosed a launch date, the amount to be tested or a timetable for formal issuance. The results will inform the development of compliant payment infrastructure.