OFA is the database. If the dog's clearances don't appear there, RUN. However, golden enthusiasts will add other people's dogs to K9data. I often check the winner's of the week in conformation shows and am interested in their pedigrees. If the dog doesn't appear, I will add it so I can get a better look at it's lines. Sometimes if I have time, I will cross reference OFA and add the clearances. Even if you see clearances on K9data, you MUST verify them on OFA. Some less than reputable breeders will make up fake numbers.
This is not neccessarily true. There are many breeders who are very reputable that do not enter information on their dogs on K9data. I have a number of friends who would fall into that category but I can assure you that if you checked the OFA database, you would find the clearance information on the dogs.
Yes, we live in an information era but there are also a lot of older established breeders that do not have websites or input data for K9data. If I have time, I will sometimes enter information for them, but I also try to keep up with my own dogs and the dogs that my boys have sired so I don't always get around to doing it.
There are quite a few people who are administartors for K9data that will go thru show results and add dogs that are not in the database but a lot of those dogs then do not have clearance information added to them.
If you find that someone has "wrong" information about clearances on k9data, you should contact one of the admins. It is an open database and you can get a password to enter data, but if you input incorrect data, that priveledge can also be taken away.
Absolutely, you should check the OFA website to check for clearance information when none is listed on k9data and even when it is listed, to double check for accuracy and to see when the last eye report was done because many people will list the CERF number on K9data but don't update the data every year when a new eye exam is done because once a dog is given a CERF number, their number will stay the same for life. The only thing that changes is the end where the date is given.