# What is Update Authority ## Module Overview This module provides an overview around the Update Authority. How it currently works on Solana and why it's important. ### Introducing: The Update Authority NFT's on Solana are different in comparison to EVM based chains. There are some complicated reasons for this due to the Solana blockchain architecture, but to keep things simple, and NFT is just an SPL-Token that uses a program called Token Metadata. This program allows you to attach metadata to the SPL-Token, which is how we can link the token to assets such as files, images, and attributes. You can read more about this on the [official Metaplex Docs](https://docs.metaplex.com/programs/token-metadata/overview). When an NFT is minted (created) and the NFT being minted is set as mutable, the only wallet that can update that token, is the wallet which holds the update authority. If the NFT is set as immutable, no wallet can every change it. ### How Creator Studio Uses Update Authority Creator Studio allows creators to mint both immutable and mutable NFT's within generative drops, editions, or 1/1s. If a creator chooses to mint as a mutable NFT, the creator will be transferred back UA at the end of the operation. By default, the UA is set to the candy machine creator. Within Creator Studio, the UA will be passed back to the Creator's wallet at the end of the operation. --- # 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.truffle.wtf/truffle-help-center/knowledge-base/what-is-update-authority.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.