Upbit GIWA Chain On OP Stack
Upbit announces its own L2 built on the OP Stack, coined GIWA Chain.
South Korea's largest crypto exchange Upbit announced plans to launch GIWA Chain, its own Ethereum Layer 2 built on the OP Stack. Upbit will leverage Optimism’s self-managed tier of the OP Enterprise service. Upbit will run its sequencer and will retain full control, while the Optimism Foundation provides backup infrastructure. Upbit aims to gain control over transaction ordering, fee capture, compliance, and uptime guarantees for its 13 million users. The GIWA Chain testnet is now live, with a mainnet launch to follow.
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Optimism Expands Actions SDK
The updated framework adds embedded wallets, lending via Aave and Morpho, swaps via Uniswap and Velodrome, and multi-chain DeFi across the OP Stack.
Optimism expanded its Actions SDK, evolving it from an early developer preview into a more complete framework for embedding DeFi directly into applications. The updated SDK introduces fully integrated onchain financial actions, allowing users to lend, earn yield, swap tokens, and make payments without needing external wallets.
The Actions SDK supports lending through Aave and Morpho, and token swaps via Uniswap and Velodrome, with built-in routing and liquidity handling. A standardized action interface unifies all operations under a consistent structure, reducing integration complexity. The expansion deepens wallet infrastructure, adding embedded wallet integrations via Privy, Turnkey, and Dynamic, with support for EOAs, smart wallets, bundlers, and paymasters. The SDK enables multi-chain DeFi experiences across OP Stack chains.
Disclaimer: Content is for informational and educational purposes only and does not constitute financial, investment, legal, or other professional advice. No representations or warranties are made as to accuracy, completeness, or timeliness. Use of this content is at your own risk, and you should consult a qualified professional before making decisions. No fiduciary or advisory relationship is created
Optimism Launches Privacy Boost
A plug-and-play SDK for adding confidentiality to any OP Stack chain, combining zero-knowledge proofs with trusted execution environments.
OP Labs introduced Privacy Boost, an SDK for adding confidentiality to any OP Stack chain. The release aims to help projects meet regulatory requirements such as MiCA, BSA, AML/KYC, and GDPR, which are difficult to satisfy when user transaction data is published on a public blockchain.
Privacy Boost combines zero-knowledge proofs with trusted execution environments, where ZK proofs ensure privacy and cryptographic integrity, while TEEs improve performance and simplify integration. Built on a UTXO-based model, the solution can generate proofs in under 500 milliseconds and includes a forced withdrawal feature. Privacy Boost is now live on OP Mainnet.
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