<p>I was trying to hack the system.</p>
<h3>Data explorer</h3>
<p>I could not find anything here. The following query is the closest thing</p>
<p><a href="https://data.stackexchange.com/stats/query/847098/user-reputation-history" rel="nofollow noreferrer">https://data.stackexchange.com/stats/query/847098/user-reputation-history</a></p>
<p>you can find:</p>
<pre><code>Upvotes Question
Upvote Answer
Downvotes own Q And A
Accepted Answers
Suggested Edits
Bounties Started
Bounties Received.
</code></pre>
<p>but not down votes other Q&amp;A</p>
<h3>Daily reputation status</h3>
<p>This is the closest that I could get. The daily reputation can not be viewed by data explorer but the little graph shows daily reputation. I went to a user from which I knew that he/she gave a recent down vote (expressed in a recent meta-post). And indeed if you count all the points that you can see in data explorer (or the activity overview) and compare with the graph then you can see a discrepancy of 1 for a particular day. So you would be able, with quite some effort, to deduce the day at which another user has given a down vote.</p>
