What I mean is -
The CGC database seems to be split into two parts, or at least has a gap within it.
First, there's the record of all comic titles. This includes how many of each title have been CGCed, how many are signatures, qualified, etc. Since the data changes each week it's also possible to know when new books are added. However, if you browse all this data you can't look up individual books that have been CGCed; only how many of each issue/variant have been.
Second, there's the related but not fully linked-up database of individually CGCed comics. You input a CGC registration number, and from that can check on the details of a single book.
So for example - let's say I go to a convention with two copies of Wonder Woman #600. I get Jim Lee to sign one copy, and Gal Gadot to sign the other. A friend then witnesses the event and submits the two comics to CGC for grading.
Six weeks later, I can plainly see on the CGC database that two new signature series entries of Wonder Woman #600 have appeared. One is graded 9.8, the other 9.0.
The comics I had signed were rare variants, so due to that plus the timing I'm almost completely certain that the two new books on the database are mine. Being impatient, I want to know which one got the 9.8 grade.
From what I can tell, I can't find this information until I get the books back. The information is however already right there in the database - as soon as I know the registration numbers I can input them into search to pull up both records and find which one received the higher grade. However, by then I'll know anyway, since the comics will be sitting in front of me. Without the registration numbers I'm stuck, because the little number '1's shown in the 9.8 and 9.6 columns on the database for my specific variant of Wonder Woman #600 can't be clicked to probe deeper into the information.
I don't see this as being a privacy issue - the information is clearly already there in the database. Typing in a registration number results in a display of basic info such as grade, who signed the comic, when it was signed, at which event, etc. There are no pictures of information stating who owns the comic or why it received a specific grade, etc.
The gap in the information (assuming I'm not just being daft and missing something obvious) means that someone can't look up a series/issue to see who has signed copies of it. For example, say there are 50 CGCed Signature Series copies of Wonder Woman #600 in total. How many have been signed by Gal Gadot? Or Lynda Carter? Or J.M.Straczynski? Did anyone have a laugh and get Stan Lee to sign a copy? At the moment the only way to sift through that info would be know each individual registration number of each signed copy.