> For the complete documentation index, see [llms.txt](https://docs.wanchain.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wanchain.org/cross-chain-infrastructure/wanchain-bridge-node-group.md). # Wanchain Bridge Node Group The Wanchain Bridge Node Group is a collection of 25 decentralised, permissionless bridge nodes that are rotated and re-elected monthly. Bridge nodes use a combination of Secure Multiparty Computation (sMPC) and Shamir’s Secret Sharing cryptography to execute cross-chain transactions, secure cross-chain assets, and transfer messages and arbitrary data between EVM and non-EVM blockchains. The Wanchain Bridge Node Group uses a 17-of-25 threshold, meaning a minimum of 17 bridge nodes must agree to validate and execute a cross-chain transaction. The cross-chain component of all Wanchain products, including [WanBridge](/products/wanbridge.md), [XFlows](/products/xflows.md) and [XPort](/products/xport.md), is secured by the Wanchain Bridge Node Group. As a permissionless system, anyone can deploy a Wanchain Bridge node. Click [here](/wanchain-bridge-nodes/deploy-a-bridge-node.md) to learn more. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.wanchain.org/cross-chain-infrastructure/wanchain-bridge-node-group.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. 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.