Crypto exchange OKX has announced the launch of a testnet for its upcoming Ethereum layer-2 network called “X1.” The network, developed using the Polygon chain development kit (CDK), will utilize zero-knowledge proofs to validate deposits and withdrawals between layers. OKX, the sixth-largest centralized crypto exchange by volume, plans to make its native coin, OKB, the primary currency for gas fees on the X1 network. The development of X1 as part of the Polygon ecosystem will allow for scalability and interoperability with other networks and ecosystems. OKX aims to onboard new users to Web3 and provide a platform for developers to build user-friendly consumer Web3 applications.