DARC, the German Ham Radio Association, offers several certificates. Among others, one of them is the Worked All Europe award. You can apply for it on a special website called DARC Contest Logbook. Good to see you can verify via your LoTW account (tough Im learned *never* to give away your password to someone else).
Another cool feature is that DARC is one of the few who are accepting eQSL.cc QSL-cards as verification tool. From the eQSL-website, you can push data to the DARC website.