That's a Java library, so you would download it from Maven Central, not GitHub (unless you're doing something non-default)... And Sonatype requires that you pro

That's a Java library, so you would download it from Maven Central, not GitHub (unless you're doing something non-default)... And Sonatype requires that you prove ownership of the reversed domain used in the groupId, which in this case is `<groupId>org.postgresql</groupId>`. You can see how to do that here: https://central.sonatype.org/faq/how-to-set-txt-record/ https://central.sonatype.org/faq/how-to-set-txt-record/ For extra piece of mind, you can also check the GPG signatures as all artifacts are signed when published to Maven Central... you need to get the key used by Postgres to sign that somehow independently from Sonatype. That's a downside of this mechanism, you just need to know for each publisher, where to get their GPG keys from. In the case of PG, I couldn't even find it with a quick google search.