# What are the 0x00 and 0x01 withdrawal key prefixes? Mainnet validator nodes contain a field referred to as the ‘withdrawal credentials’. The first two bytes of this credential are called the withdrawal prefix. This value is currently a number that starts with 0x00 or 0x01. Validators with a 0x00 withdrawal prefix will not be able to withdraw immediately. 0x00 validators need to change to an address that starts with 0x01. This is a one-time process that enables the withdrawal functionality (skimming and unstaking). Launchnodes’ engineering team can show you how to do this, or you can do this yourself if you feel comfortable doing so. --- # 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://launchnodes.gitbook.io/faqs-about-withdrawals-for-solo-staking/withdrawals-faqs-for-solo-staking/what-are-the-0x00-and-0x01-withdrawal-key-prefixes.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.