# Storage Our event-driven NFT update standard is compatible with several decentralized storage platforms, offering developers the freedom to choose based on their application's needs. Services like Filecoin, IPFS, ETH Storage, and BNB's Greenfield are among the options that facilitate the storage of update modules. In this standard, URLs MAY pointing to JSON files in decentralized storage are utilized to indicate changes, with these URLs recorded on-chain through event emissions. The choice of JSON for data representation leverages its widespread use and flexibility, facilitating ease of interpretation and integration within the Ethereum ecosystem. While alternative data schemas are entirely viable, the ubiquity and accessibility of JSON make it the preferred option for many developers. Nonetheless, this standard supports developer autonomy in implementation details, encouraging compatibility and innovation through custom event interpretations for those who opt for different data formats. For example, BNB's Greenfield provides CRUD (Create, Read, Update, and Delete) functionalities, which can be particularly useful for managing the lifecycle of NFT status. Developers could create new data entries for NFTs' status, retrieve current status information, update the status as the application evolves, or remove outdated records. --- # 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://martinzerox.gitbook.io/zerox-network-whitepaper/erc-xxxx/storage.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.