In particular, when is this information collected and by whom?
1. There's going to be a California-state-government-run list of gun owners. People who buy a gun or have it transferred to them get added to it. Not reporting a transfer is a crime.
2. When someone gets a restraining order against someone else, they can request information on whether said person is on the list and which/how many weapons they have. They are then allowed to use that information as they like. Law enforcement will be able to check whether someone is on the list.
3. There will be a second list of people ineligible to own a gun for various reasons. These are primarily the people who the state expects to fail a background check (which is required for purchase as I understand it). Anyone selling or transferring a gun will have to ask the registry whether the person they are transferring to is on the blocklist. Not doing so is a crime.
4. There will be a third list, which is the correlation of people who are on the first list and on the second list. This is a list of people who have firearms but would not be allowed to acquire firearms now. This list can be shared with universities and "bona fide research institutions".
As someone who lives in a place where gun ownership is not normal or tolerated for the most part, this is all really weird to me, so I'm not able to evaluate the significance of it, but this is what it says.
Clarifie the process and parameters of disclosure of specified information to the California Firearm Violence Research Center at UC Davis by the Department of Justice (DOJ) for research or statistical activities. The DOJ may at its discretion, also disclose specified information, to other nonprofit bona fide research institutions that are accredited by the United State Department of Education or the Council for Higher Education Accreditation for the study of violence prevention in the matter prescribed. Requires that any material identifying individuals to only be used for research and statistical purposes and prohibits reports or publications derived from the material from identifying any specific individuals. Requires DOJ to establish procedures for these requests and allows researchers to be charged reasonable fees related to their requests