Paycoin, a payment service, was introduced in South Korea in 2019. Users can utilize Paycoin (PCI) to buy products and services from a network of affiliated merchants. By September 2021, Paycoin reportedly had over 70,000 merchants onboarded, including well-known brands like 7-Eleven, Domino's Pizza, and KFC, along with 2 million registered users, facilitating more than 10 million USD in payment transactions.