GIWA, the Ethereum Layer 2 network developed by South Korean exchange Upbit's parent Dunamu, rejected claims on Sept. 27 that its mainnet RPC endpoint had been leaked, stating that the production chain has not been launched.

The project said on X that an RPC leak was technically impossible because no mainnet exists. "FYI, we haven't launched our mainnet yet," GIWA wrote. "No possibility of RPC leakage as well since we've never launched it 🤷‍♂️." The account urged users to "DYOR" and stay safe from "FUDs and scams" circulating before launch.

What does the documentation show?

GIWA's public connection documentation does not list a mainnet RPC endpoint. Developers can access the network only through the GIWA Sepolia testnet at sepolia-rpc.giwa.io, with a separate Flashblocks test endpoint available for faster transaction preconfirmation. Both endpoints are rate limited and intended for development.

The network guide states that GIWA's mainnet is "currently under development." The same language appears on GIWA's smart contract page, which lists deployed contracts for Sepolia while leaving the mainnet section marked as under development.

A separate Flashblocks document identifies the testnet endpoint as active and the corresponding mainnet endpoint as "Coming soon." GIWA did not name the social media accounts or URLs behind the leak claims in materials supplied for this report.

How is GIWA built?

GIWA is an Ethereum Layer 2 constructed with the OP Stack, the open-source framework maintained within the Optimism ecosystem. Its documentation describes a one-second block time and full compatibility with Ethereum Virtual Machine tooling.

Developers can deploy Solidity contracts using Foundry, Hardhat or Remix IDE. The chain uses a sequencer for block production, with Ethereum as the Layer 1 settlement environment. Current specifications include a 60 million block gas limit.

GIWA does not advertise a native token. According to its FAQ, ETH serves as the base asset and is used for transaction fees, with stablecoin-based fee payments potentially supported later through a Paymaster system.

Upbit's involvement became public earlier in 2026 when Dunamu partnered with Optimism to build GIWA under the Self Managed OP Enterprise tier. The arrangement gives Upbit control of its own infrastructure while receiving technical support and failover services from Optimism. Sequencer control gives the operator responsibility for transaction ordering on the chain.

GIWA's own documentation describes the chain as "Powered by Upbit" and positions it as infrastructure linking users, developers and liquidity to Web3 applications.

What products remain unfinished?

GIWA's public website lists several planned products as not yet in general release. GIWA Wallet, described as a self-custody product with multichain support and integrated exchange-asset views, is marked "Coming Soon."

A planned stablecoin ecosystem, including Korean won and global stablecoin payments with Paymaster infrastructure, carries the same status. The project currently directs developers toward the testnet, where test ETH is available through a faucet.

How does this fit Upbit's broader strategy?

GIWA forms one part of Dunamu's push beyond centralized exchange trading. The project's website describes on-chain identity, data oracle services, a wallet and stablecoin payments among planned components, several of which remain in development.

Upbit has previously had to clarify reports on unreleased blockchain products. In July, the exchange rejected claims it was participating in issuing Open USD after Dunamu appeared on a list connected to the stablecoin initiative. Upbit said at the time it had not agreed to issue or launch the dollar-backed stablecoin.

GIWA's documentation does not provide a mainnet launch date. The project has not given a public timeline for the production rollout that would expose a mainnet endpoint to the kind of leak claims currently circulating on social media.