# Concluding remarks Through the implementation of proving the Ethereum full nodes, Polyhedra Network enables fully trustless, efficient, and secure interoperability using zkBridge, to connect Ethereum ecosystems (both L1 and L2s) with other networks. zkBridge is the first trustless, efficient, secure, and universal cross-chain bridge with advanced zero-knowledge proof technology. zkBridge uses zero-knowledge proofs to efficiently convince the receiver chain that a certain state transition happened on the sender chain. With zero-knowledge proofs, zkBridge offers both strong security and a significant reduction in on-chain verification cost, without relying on external assumptions. Furthermore, zkBridge also allows transmission of current and historical Ethereum data, including the blockheader and transaction data, to be accessible by any other blockchain ecosystems and applications. This will enable any smart contract on any blockchain to trustlessly access Ethereum data and compute on top of the Ethereum data. All the security will be guaranteed by proving Ethereum PoS full nodes by using the efficient proof system of zkBridge. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.zkbridge.com/proving-ethereum-full-pos-consensus-in-zk/concluding-remarks.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.