The next step toward verifying apps will come this month as Google deploys a new system service on most certified devices. The package (com.google.android.verifier) will appear on phones and tablets running Android 8 or higher, allowing Google to block the installation of unverified apps. It will remain dormant until verification is activated in your specific region. //

As detailed a few months ago, the advanced flow will allow users to bypass verification, but the process isn’t easy. You’ll have to navigate to a buried menu, confirm you understand the risks multiple times, and wait a whole day before completing the process.
https://arstechnica.com/gadgets/2026/03/google-details-new-24-hour-process-to-sideload-unverified-android-apps/