I want to distribute an Android app for sideloading only. However, when users are installing this apk, PlayProtect shows a warning about "...blocked... - unknown developer".
Is there a way, to register myself as developer / my signing keys with Google, but without making my app known to Google Play?
If yes, how do I sign my release to add such a "play developer certificate"?
(Goal is that PlayProtects warning may look like "We don't know this app, but at least the developer is known" which may sound less alarming for users than the current popup.)