Freee Chain is built on OP Stack

Freee Chain is an Ethereum Layer 2 solution built on Optimism's open-source OP Stack, offering the security, stability, and scalability necessary to power your on-chain applications. This allows you to confidently deploy any EVM-based codebase and seamlessly onboard your users and assets from Ethereum Layer 1 and other interoperable chains. The NFT commemorating Freee Chain's important moment is free to mint and cements your status as an early supporter of Freee Chain.