How to safely backup and restore a Babylon.js scene while validating data integrity?

When working with Babylon.js applications, developers often need to persist a scene's state between sessions or across devices. What are the recommended approaches for serializing a Babylon.js scene, storing the backup (e.g., in localStorage, IndexedDB, or a remote server), and then restoring it later while verifying that the restored data matches the original? Please outline the steps, mention any built-in Babylon.js methods or third-party libraries that help with validation (such as checksums or schema checks), and note any assumptions about the environment (e.g., browser support, CORS considerations) that should be taken into account.