# 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: 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.wanchain.org/cross-chain-infrastructure/wanchain-bridge-node-group.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.