Upvotes seem to just federate as likes and dislikes.
this post was submitted on 17 Feb 2025
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Replace "hashing" with "encrypted" (perhaps just using a symmetric key that the admin sets up) and then it gets impossible to know for any outsiders who is the real user behind the vote.
I for one just wish people understood once and for all that anything you do on social media is public.
If you are not comfortable backing up your opinion or action, then don't do it.
Assuming each user will always encrypt to the same value, this still loses to statistical attacks.
As a simple example, users are e.g. more likely to vote on threads they comment in. With data reaching back far enough, people who exhibit "normal" behavior will be identified with high certainty.