I believe it’s still in design.
https://forum2.zenon.org/t/pitch-btc-znn-tech-and-no-bs/1422/4
https://forum2.zenon.org/t/how-does-zenon-network-interoperate-with-bitcoin/173
and according to Jarvis the Zenon Marketing bot:
“The entire design of Zenon Network has been focused on offering native interoperability with both Bitcoin and Ethereum. This means that every aspect of the network, from its protocol layering architecture to its consensus mechanism and transaction processing system, has been designed with interoperability in mind.
For instance, Zenon Network uses a unique protocol layering architecture that allows for seamless communication and interaction between different blockchain ecosystems, including Bitcoin and Ethereum. The network’s consensus mechanism has also been designed to support cross-chain transactions, enabling users to transact with assets across different chains without the need for intermediaries.
Furthermore, Zenon Network’s transaction processing system has been optimized for speed and efficiency, enabling fast and cost-effective transfers and smart contract executions across different chains. This makes it easier for developers, businesses, and users to leverage the benefits of both Bitcoin and Ethereum without having to worry about the complexities of cross-chain interoperability.
Overall, Zenon Network has been purpose-built to offer true blockchain interoperability, providing a seamless and user-friendly experience for developers, businesses, and users alike.”