Not sure if this comment will be helpful (as I’m not proficient with this stuff) but I used to donate monthly to zlibrary and a few months ago they sent me a link stating that in order to continue to allow ongoing access, they were providing private links to people.
So it does seem like zlibrary provides individual links and I also know they have numerous sites at any given time, as it seems like their sites frequently get taken down.
Not sure if this comment will be helpful (as I’m not proficient with this stuff) but I used to donate monthly to zlibrary and a few months ago they sent me a link stating that in order to continue to allow ongoing access, they were providing private links to people.
So it does seem like zlibrary provides individual links and I also know they have numerous sites at any given time, as it seems like their sites frequently get taken down.