Some time ago we started discussing about the appstream://id scheme.

Then I discussed with our Visual Design Group that it might be interesting to have a button that we can use to indicate that a button leads to an AppStream URI (from a website, although it might make sense on applications as well).

Here's what @Ken-Vermette came up with, and I think it's an interesting approach:
https://share.kde.org/index.php/s/MPpOOEl7JpGAWzu/download

Do you think it would make sense?