# Origin: Settlement on ETH and Alt-L1s In contrast to Nexus, zkLink Origin's architecture allows for the integration with Alt-L1s. A zkLink Origin rollup will settle the transactions and transition of states on all the chains connected, as long as one of the networks (designated as primary chain) supports zk-SNARKs proof verification, and there is a secure and fast way to achieve states synchronization across the networks. To establish a fast and secure communication mechanism between different chains, zkLink introduces a Light Oracle Network for cross-chain message transfer. The security assumption of zkLink Origin mode is that the rollup sequencers, responsible for packaging transactions, cannot collude with all nodes of the Light Oracle Network for malicious activities. --- # 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.zk.link/architecture/settlement-layer/origin-settlement-on-eth-and-alt-l1s.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.