# Primary Chain Open Interchain Protocol is designed to be easily extendable by simply replicating the smart contracts on new EVM compatible chains. However, there are certain functionalities that only need to be done once (i.e. the registration of a Bridge Troll), thus, the concept of a Primary Chain is established. A specific blockchain will be selected as the Primary Chain, meaning that for certain features, that chain’s smart contracts will behave as the master, and the other secondary chains will serve as replicates. This feature mainly applies to Bridge Troll registry, and Bridge Troll qualification stakes. During the initial feature rollout, the primary chain will be defined as the Binance Smart Chain, however - this can be transitioned as the bridge community deems fit. --- # 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://doc.openswap.xyz/technologies/openswap-bridge/primary-chain.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.