How can I validate backups and restores on Arch Linux to ensure data integrity?

When setting up a backup strategy on Arch Linux, what steps should I follow to verify that both the backup creation and the subsequent restore process preserve data integrity? Please outline a reproducible workflow that includes:

1. Identifying the filesystems or directories to protect.
2. Choosing a backup tool (e.g., rsync, borg, or timeshift) and creating the backup.
3. Generating and storing cryptographic hashes or checksums for the backed-up data.
4. Performing a test restore to an isolated environment (such as a temporary mount point, chroot, or virtual machine).
5. Comparing the restored data against the original using the hashes or a diff tool.
6. Documenting any discrepancies and rolling back the test restore if needed.

Explain how each step contributes to validation and what precautions to take to avoid corrupting the live system during testing.