# Introduction ReyaChain is the next iteration of Reya - designed to provide millisecond-level trading speed, whilst inhereting Ethereum's security. We achieve this by being the first ever trading-specific based rollup. You can find the technical details here: Today, Reya uses a forked and heavily customised version of Arbitrum Orbit. The infrastructure upgrade - as Reya transitions from an optimistic rollup to a based rollup - will happen in stages without any impact to trading. --- # 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.reya.xyz/chain/introduction.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.