-1self World brings a base of more than 1.8 million wallet users and experience issuing over 80 million SBTs

-The two companies will work on advanced on-chain data analytics and a stablecoin payment and settlement integration system

(Seoul, South Korea - September 22, 2026) Lambda256, the blockchain subsidiary of Dunamu, the operator of Upbit, announced today that it has signed a memorandum of understanding (MOU) with 1self World, operator of the digital asset wallet MyB, to jointly develop financial solutions built on on-chain data.

Under the agreement, the two companies will combine the data and technology each holds to build solutions for financial institutions. They also plan to pursue joint sales to financial institutions and enterprises by connecting their services, and to work together on advanced on-chain data analytics and a stablecoin payment and settlement integration system.

1self World contributes a user base of more than 1.8 million digital wallets and experience issuing and operating over 80 million SBTs, its W3ID (Web 3.0 Identity) technology, which combines wallet addresses with SBT attribute data to analyze preference and behavior at the wallet level, and the SDK, API, and service design capabilities it has built through providing services to the financial sector. Lambda256 supports the data analysis work and the stablecoin payment and settlement integration on the basis of its blockchain infrastructure, on-chain data APIs, and ontology-based analytics.

1self World has accumulated on-chain data from a large user base through MyB. Using W3ID, it structures consent-based preference and behavioral information as on-chain data in the form of SBTs, and offers services that apply that data to personalized benefits, CRM, and marketing.

"What matters here is that we are combining 1self World's on-chain data with Lambda256's blockchain infrastructure to develop data solutions financial institutions can apply to their actual operations," said Michael Cho, CBO of Lambda256. "We will continue to produce concrete use cases for bringing on-chain data into financial sector workflows."

"1self World has validated what on-chain data can do by running live services in a large-scale user environment," said Younghoon Kang, Director at 1self World. "With stablecoins as well, being able to make a payment is not enough on its own. By connecting the data accumulated in a wallet to customer-level benefits and rewards, we can establish a reason to use stablecoins, and we intend to build that into real financial sector services together with Lambda256."

Through Nodit, its blockchain node and data infrastructure platform, CLAIR, its on-chain AML/FDS compliance platform, and SCOPE, its on-chain financial orchestration platform, Lambda256 covers blockchain infrastructure, compliance, and digital asset financial operations within a single technology stack.

About Lambda256

Lambda256 is a blockchain technology company that helps financial institutions build and operate secure digital asset businesses. Founded in 2019 as a spin-off from Dunamu's blockchain research lab, Lambda256 drives the commercialization of blockchain technology and the growth of the financial data ecosystem through three core platforms: Nodit, an enterprise-grade full-stack blockchain node and data infrastructure platform; CLAIR, an on-chain AML/FDS (Fraud Detection System) compliance platform; and SCOPE, an on-chain financial orchestration platform.

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