South Korea's largest crypto exchange, Upbit, has launched its Ethereum layer-2 solution, Giwa, on the testnet. Announced at the Upbit D Conference 2025, Giwa aims to enhance Web3 infrastructure by leveraging the Optimism Foundation's OP Stack to achieve one-second block times while maintaining Ethereum's security. This move positions Upbit to expand beyond its traditional exchange role. Giwa, short for Global Infrastructure for Web3 Access, is designed to make Web3 infrastructure accessible and engaging. The testnet, Giwa Sepolia, supports Ethereum Virtual Machine-compatible contracts and includes a block explorer to track activity. Although a mainnet launch date has not been disclosed, the testnet's rapid development suggests significant progress. Upbit dominates the South Korean crypto market, accounting for 73% of trading volume and ranking 20th globally with $2.5 billion in 24-hour trading volume. This launch follows similar initiatives by other exchanges like Coinbase and Binance, as well as tech giants Google, Stripe, and Sony, who are also exploring blockchain solutions.