South Korea's Upbit Launches GIWA Chain as Optimism Foundation's First Self-Managed Enterprise L2
Dunamu, operator of South Korea's largest crypto exchange Upbit, launched GIWA Chain — an OP Stack Ethereum L2 with 1-second block times — as the first deployment on Optimism Foundation's Self-Managed tier, giving Upbit full sequencer control with institutional failover support.
Dunamu, the Seoul-based fintech company that operates Upbit — South Korea's largest crypto exchange by volume — has launched GIWA Chain, an Ethereum Layer 2 network built on Optimism's OP Stack. GIWA Chain is the first deployment on the Self-Managed tier of Optimism's OP Enterprise framework, meaning Dunamu controls the primary sequencer and all core network decisions while Optimism provides institutional-grade monitoring, upgrades, and a backup sequencer for failover.
The Chain
GIWA Chain launched on testnet in April 2026 and has already processed nearly 100 million transactions — an indication of either significant internal testing or early external activity. The chain delivers one-second block times and full EVM compatibility, making it immediately accessible to Ethereum developers without tooling changes. Upbit's choice of OP Stack over alternatives — including zkSync, Polygon CDK, and Arbitrum Orbit — reflects the same decision several other major institutions have made: Optimism's governance model and shared sequencing roadmap offer more institutional-grade support than the competitive alternatives.
The "Self-Managed" designation under OP Enterprise is significant. In contrast to the standard OP Stack deployment, Self-Managed gives Dunamu full control over sequencer operations — meaning GIWA Chain's transaction ordering, fee parameters, and upgrade schedule are entirely within Dunamu's governance authority. Optimism provides ongoing system monitoring, access to the Superchain upgrade pathway, and a backup sequencer that activates if Dunamu's primary sequencer goes offline. This structure is explicitly designed for operators — like exchanges or banks — that cannot cede control of core infrastructure to a third-party protocol.
The Enterprise Model
GIWA Chain's strategic positioning is an exchange-native application chain. Rather than competing as a general-purpose L2, Dunamu is building GIWA as the financial infrastructure layer for its own Web3 products: tokenized assets, exchange-integrated DeFi, and potentially the merged entity with Naver Financial — a fintech powerhouse valued at ~20 trillion Korean won ($13.5 billion) if the deal closes in late 2026 as expected.
Upbit's choice to launch its own L2 rather than use Ethereum mainnet or an existing L2 reflects a broader trend: major financial institutions building app-specific chains that capture transaction fees and user data rather than paying fees to external networks. GIWA Chain positions Dunamu to capture the full value stack from its 8+ million Korean retail crypto customers as they migrate to Web3-native financial products.
Optimism FoundationWhat to Watch
GIWA Chain's mainnet launch and the Naver Financial merger timeline are the two milestones that will determine whether this is a significant development in Asian Web3 infrastructure or a strategic announcement that stalls in execution. If Dunamu successfully merges with Naver Financial and deploys GIWA as the settlement layer for Naver Pay's 45 million users, GIWA becomes one of the highest-throughput consumer finance chains in the world. That outcome is still contingent on regulatory approval, but the technical infrastructure is now live.
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How we report: This article cites primary sources, regulatory filings, and on-chain data where available. BlockAI News uses AI tools to assist with research and first-draft generation; every article is reviewed and edited by a human editor before publication. Read our full How We Report page, Editorial Policy, AI Use Policy, and Corrections Policy.
