Stay connected with BizTech Community—follow us on Instagram and Facebook for the latest news and reviews delivered straight to you.
Kaia, a high-performance Layer-1 blockchain, and LINE NEXT, the Web3 subsidiary of messaging giant LINE, have unveiled Project Unify. This is a big step toward making stablecoins more common in Asia’s fragmented financial landscape.
This superapp, which will be powered by stablecoins and will be in beta by the end of 2025 on LINE’s decentralized app (dApp) platform, seeks to make everything from sending money across borders to buying things online easier.
According to The Block on September 22, 2025, Unify wants to be a single interface for all financial services. It lets users earn real-time rewards on their holdings, send money through instant messages, and make global payments with shopping rewards. All of this is backed by stablecoins that are tied to major Asian currencies.
Asia makes for more than 60% of all stablecoin transactions ($7.5 trillion in 2024), thus this project could help LINE’s 200 million monthly customers in Japan, Thailand, Indonesia, and other countries get on board with Web3 faster. Stablecoins connect traditional finance with blockchain.
Project Unify shows that Kaia wants to create a more open and connected ecosystem that might compete with big players like WeChat Pay in the digital wallet industry.
Project Unify: A Single Entry Point for Stablecoin-Powered Finance
Unify is meant to be an all-in-one superapp that combines stablecoin features with LINE’s well-known chat interface. This gets rid of silos in payments, savings, and asset management. Users can save stablecoins to earn real-time interest, transmit money easily through conversations (for example, splitting bills or sending remittances), and make purchases online or in person all over the world. They can also earn cashback rewards to encourage everyday use. This smooth experience solves some of the biggest problems in Asia’s $300 billion remittance sector, where migrant workers have to deal with excessive fees (up to 7%) and long processing times.
By the end of the year, the app’s beta will be available in two forms: a standalone service on Kaia’s network for direct Web3 access and a Mini dApp built within LINE Messenger.
This will make it available to both crypto enthusiasts and casual users. Supported stablecoins include USD-pegged versions as well as local fiat equivalents like the Indonesian rupiah (IDR), Thai baht (THB), Philippine peso (PHP), Malaysian ringgit (MYR), Singapore dollar (SGD), Japanese yen (JPY), and South Korean won (KRW).
Makes it easy to send money across borders without having to worry about currency conversion. Early studies in South Korea and Japan, LINE’s main markets, reveal that 85% of users who make in-app purchases stick around. This suggests that Unify might take a piece of the $1.5 trillion Asian digital payments market by 2027.
Unify makes it easier for people who don’t use cryptocurrency to utilize stablecoins by putting them directly into social workflows. Will encourage organic adoption. Think about sending ¥5,000 to a relative in Thailand using LINE conversation, with rapid settlement and a 1% return accrual. These kinds of things might make blockchain a routine part of daily banking.
The Unify SDK gives issuers and developers more power
Kaia and LINE NEXT are launching the Unify Software Development Kit (SDK), a set of tools made for two important groups: stablecoin issuers and app developers. This will help the ecosystem grow even faster. The SDK makes it easier for issuers like Circle (USDC) or Tether (USDT) to distribute their coins across borders, boost liquidity, and expand their utility. This means that they can easily join LINE’s huge user base and start using their coins right away. This could help with the “cold start” problem in emerging regions, where stablecoin TVL in Southeast Asia is just $15 billion, even though there are 200 million prospective users.
On the other hand, developers get plug-and-play modules that let them add stablecoin functionalities to their apps. For example, they could use THB-stablecoins to settle in-game purchases or KRW conversions in real time on DeFi dashboards. Kaia’s EVM-compatible chain works with the SDK’s modular design, which makes it easy to quickly prototype with minimal gas prices (less than $0.01 per transaction). Early adopters, such as Korean financial businesses, say that Unify is 40% faster to integrate than Ethereum-based solutions. This makes it a popular choice for developers in Asia’s $50 billion Web3 economy.
This combined focus on issuers and builders is similar to Solana’s ecosystem awards, which helped its TVL reach $5 billion in 2024. Kaia thinks that by the first quarter of 2026, there will be more than 100 dApps that work with the SDK. This could double the number of users of LINE’s Mini dApp from 130 million (as of January 2025) to 200 million.
Building on the Mini dApp Momentum: Kaia and LINE’s Web3 Synergy Project Unify builds directly on the success of LINE NEXT and Kaia’s January 2025 Mini dApp debut, which has onboarded over 130 million new users to Web3—primarily through gamified experiences and social token airdrops. LINE has 200 million active users every month in Asia, so it has the distribution power.
Kaia, on the other hand, was founded in April 2024 when Kakao’s Klaytn and LINE’s Finschia blockchains merged. It provides the scalable infrastructure. Kakao is the most popular messaging app in South Korea, while LINE is the most popular in Japan and Thailand. Together, they have 300 million users across Asia.
Youngsu Ko, the new CEO of LINE NEXT, said, “We plan to lead the growth of the stablecoin ecosystem in Asia by making a superapp that is easy and safe for everyone to use.” Sam Seo, chairman of the Kaia DLT Foundation, stressed the orchestration layer: “Asia’s payment infrastructure is very fragmented, so Kaia wants to bring it all together and make it easier for people to use it across borders.” This partnership uses LINE’s social graph to help it develop quickly, just like Telegram’s TON blockchain did when it reached 900 million users in 2024.
What this means for Asia’s stablecoins and Web3
Unify comes at a very important time: In 2024, the number of stablecoin transactions in Asia reached $7.5 trillion, but regulatory silos—IDR prohibitions in Indonesia and JPY inspections in Japan—make it hard for flows to go smoothly.
According to McKinsey, Unify might get 10–15% of the $300 billion remittance business by embracing local-pegged stablecoins and following new rules like Singapore’s stablecoin guidelines. For Web3, it makes access more equal: LINE has a 70% market share in Thailand, thus millions of people may earn interest on stablecoins without leaving the app.
There are dangers with interoperability and competition from Alipay’s blockchain pilots, but Kaia’s 10,000 TPS capacity and LINE’s user trust give it a big edge. Asia’s use of cryptocurrencies is growing quickly, with Indonesia having the most at 18 million. Unify could connect TradFi and DeFi, helping the region’s economy grow to $1 trillion by 2030.
Conclusion
Project Unify is a brilliant move by Kaia and LINE NEXT in the Web3 world: a stablecoin superapp that combines the ease of chatting with the speed of blockchain. It will launch in beta by the end of 2025 and give 200 million people in Asia more power.
It fights fragmentation head-on with real-time yields, chat-based remittances, and an SDK that lets developers be creative. It is supported by the combined power of the Kakao and LINE ecosystems.
As CEO Ko and Chairman Seo see it, this isn’t simply an app; it’s a way to get more people involved in the economy, and it might change the way stablecoins are used in the world’s fastest-growing digital economy. Unify may make Kaia the leader in Layer-1 innovation with Mini dApp’s 130 million users as a springboard, but success depends on smooth execution and navigating regulations. This is a project that investors and builders who are interested in Asia’s Web3 explosion should keep an eye on.
