Upbit-backed GIWA says mainnet is not live, denies RPC leak

GIWA has rejected claims that its mainnet RPC was leaked, saying the Ethereum Layer 2 network has not launched its mainnet.

The project said on X on Sept. 27 that a mainnet RPC leak was impossible because no mainnet has gone live. GIWA told users to “DYOR” and remain alert to false information and scams circulating before launch.

Official GIWA documentation supports the main point of the clarification. The network’s mainnet section remains marked as under development, while GIWA Sepolia is available as a public test environment.

FYI, we haven’t launched our mainnet yet

No possibility of RPC leakage as well since we’ve never launched it 🤷‍♂️

“DYOR” and stay safe from FUDs and scams

— GIWA (@GIWA_by_Upbit) September 27, 2026

GIWA mainnet remains under development

GIWA’s connection documentation does not provide a mainnet RPC endpoint. Instead, developers can access the GIWA Sepolia testnet through sepolia-rpc.giwa.io, while a separate Flashblocks test endpoint is available for faster transaction preconfirmation.

Both endpoints are rate limited and intended for development and testing, according to the project’s network guide. GIWA specifically says its mainnet is “currently under development.”

The same distinction appears in GIWA’s smart contract documentation. Its contracts page lists deployed contracts for the Sepolia testnet but leaves the mainnet section marked as under development.

A separate Flashblocks document identifies a working testnet endpoint while listing the corresponding mainnet endpoint as “Coming soon.”

The available documentation therefore supports GIWA’s statement that a public test network exists while the production network has yet to launch.

The clarification follows social-media claims involving what was described as a leaked mainnet RPC. GIWA did not identify the accounts or URLs behind those claims in the statement supplied for this report.

No evidence provided by GIWA indicates that its Sepolia testnet RPC was compromised. The project’s response specifically addresses claims involving the unlaunched mainnet.

GIWA uses OP Stack for its Ethereum Layer 2

GIWA is an Ethereum Layer 2 built with the OP Stack, the open-source software framework maintained within the Optimism ecosystem.

Its technical documentation describes a one-second block time and compatibility with Ethereum Virtual Machine development tools. Developers can deploy Solidity contracts using tools already common in Ethereum development.

The network uses a sequencer for block production, while Ethereum provides the Layer 1 environment underlying GIWA’s settlement architecture. The current design specifies a 60 million block gas limit and one-second block intervals.

Unlike some Layer 2 networks, GIWA does not currently advertise a separate native token. Its FAQ says ETH is used as the base asset and for transaction fees, while stablecoin-based fee payments may be supported later through a Paymaster system.

Upbit’s involvement became public earlier in 2026. Upbit partnered with Optimism to build GIWA using the OP Stack under the Self Managed OP Enterprise tier.

The arrangement allows Upbit to manage its own infrastructure while receiving technical support and failover services from Optimism, according to the report. Sequencer control gives the operator responsibility for ordering transactions on the network.

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

GIWA Wallet and stablecoin products remain unfinished

GIWA’s public website shows that several planned products have not yet entered general release. The official site lists GIWA Wallet as “Coming Soon.” It describes the wallet as a self-custody product designed for GIWA Chain with multichain support and integrated views of exchange assets.

A planned stablecoin ecosystem carries the same status. GIWA says it intends to support stablecoin payments involving Korean won and global stablecoins, including Paymaster infrastructure that could allow stablecoins to cover transaction fees.

The project currently directs developers toward its testnet instead. Test ETH is available through a faucet, and developers can use GIWA Sepolia for smart contracts, wallet integrations and other testing before production deployment.

GIWA’s smart contract development guide supports Foundry, Hardhat and Remix IDE. Applications can use Solidity or other EVM-compatible tools because the network follows Ethereum’s execution environment.

The node documentation provides a similar test-focused setup. Developers can run their own GIWA node or use the free Sepolia RPC endpoint, while the project recommends external node services for future production workloads.

Upbit continues building around blockchain infrastructure

GIWA forms one part of Upbit operator Dunamu’s efforts to expand beyond centralized exchange trading.

The project’s website describes on-chain identity, data oracle services, a wallet and stablecoin payments among planned components. Some remain in development as GIWA progresses toward a production network.

Upbit has previously had to clarify reports concerning unreleased blockchain products. Crypto.news reported in July that the exchange rejected claims it was participating in issuing Open USD after Dunamu appeared on a list connected to the stablecoin initiative.

At the time, Upbit said it had not agreed to issue or launch the dollar-backed stablecoin. Several other South Korean companies named in the same initiative similarly denied having made formal commitments.

GIWA’s current clarification is narrower. It concerns technical claims about an RPC endpoint and states only that no GIWA mainnet has been launched.

The project’s public documentation does not provide a mainnet launch date. Its connection, contracts and Flashblocks pages continue to show mainnet features as being under development or coming soon.