This post will not make much sense without first reading Suggested edit by Anonymous, which details my making over a hundred anonymous edits to MSE over a period of years before creating my current account.
As it turns out, there is a counter that publicly tells how many anonymous edits from a specific location were approved or rejected:
After discovering this a long time ago, I decided to do some testing to see how exactly that counter was incremented. I found out that it considers the browser cookies only, and not IP address, because I used private windows for a large portion of my editing, and the counter was being reset to zero whenever I started a new private session. (The edit above was by me; I suggested three edits from that particular session before starting a new one.) On the other hand, whenever I changed my IP address, either using my VPN or physically moving, and using either the same private session or a standard, non-private session, the same counter was updated.
After discovering my edits were being counted, I took care to make sure that I was making most of my edits through my regular browser session (and not a private one), and worked at the same pace to increment that counter. I then used it to produce evidence that I'm the anonymous editor before coming out and recreating my account here.
But there's something wrong with that. At the time I made that (rejected) edit, there were only 94 approved anonymous edits from that particular location, plus one that wasn't reviewed until after I had already created my account. That number is thus supposed to only be 95. However, it's 113:
I did not make any more anonymous edits from that particular location (or anywhere, for that matter, except for three suggestions to the formatting sandbox made in private sessions to test out bugs; I later performed concurrent edits to automatically reject them).
But why did this counter still continue to increment? All suggested edits I made from this session after creating my account, were through my account. Are those edits somehow being counted toward that amount? It's not that more approved edit suggestions were made through the same IP, because per my testing the counter is tracked through specific sessions, possibly through cookies, and is completely IP-agnostic.
As a matter of fact, I think I've lost access to that session (with 113 approved edits), since I had to refresh my system a couple weeks ago and it probably deleted my cookies.