# Introduction This guide provides detailed steps to register an ENS domain on the **Polygon** and **Bloxberg** blockchains. The ENS implementation on these blockchains has been modified to simplify payment processes and domain duration settings. The payment is fixed at 100 coins (ECLD for Polygon and ETNY for Bloxberg), and the registration duration is effectively infinite (584,554 years). However, the input duration must be more than 28 days (in seconds) for validation purposes. --- # 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.ethernity.cloud/ens-domain-registration/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.