APK outside of Play Store?

[wireguard at bulletin.elitemail.org]

For users who prefer to avoid Play Store as a delivery channel, is there an official pre-built APK available? Such users are typically steered towards APKPure/APKMirror/F-Droid with questionabl authenticity and (in the case of F-Droid) the prospect of old build dependencies built on an EOL OS (Strech). Aurora is an option, though a dev provided build (with accompanying checksum/signing cert fingerprint) would be preferable.