Bitcoin, the very first blockchain, is evolving continuously, and its ecosystem is currently experiencing rapid expansion since the emergence of the Ordinals protocol. To foster further growth of a robust Bitcoin ecosystem, there is a pressing need for a solution that not only enables seamless interactions within Bitcoin and its Layer-2 networks but also facilitates interoperability between the Bitcoin ecosystem and other blockchain ecosystems like Ethereum and Ethereum Layer-2s.

According to official sources, Polyhedra Network has launched a Bitcoin cross-chain message transmission protocol based on zkBridge to improve the interoperability of the Bitcoin network. This innovation aims to enable the Bitcoin network to efficiently and securely interact with other L1 and L2 blockchain networks through cross-chain interoperability.

According to an official announcement, Polyhedra Network is building zkBridge on Arbitrum to bring secure and efficient interoperability. zkBridge enables fast settlement of cross-chain transactions from Arbitrum One and Nova to other networks, supported by a decentralized auxiliary verification network. The integration of zkBridge and Arbitrum Stylus simplifies smart contract creation and improves efficiency. Arbitrum Stylus promotes user-friendly zk proof usage, enhances security with private contracts, and enhances zk oracle, thus changing the interaction of smart contracts.