"Proved" is the correct past participle usage of the word. "Proven" has been incorrectly used so often that it has just become accepted. It's laziness.
"Every time you are proved wrong" indicates a future occurrence in the prediction. Like: "I predict every time you are smacked in the head, you will cry it is unfair".
"Smacked" is past tense, but since I am predicting what occurs AFTER the smacking, it MUST be described in the past tense. It would be silly to say "If someone decides to give you a smack in the future, I predict it will be followed you you crying that it is unfair". Instead I say "I predict every time you are smacked in the head, you will cry it is unfair"
You failed, but nice try though.
"Today, both proved and proven are now considered correct. Still, two major style guides, The Chicago Manual of Style and The Associated Press Stylebook, prefer proved as the past participle. Throughout the 1800s, grammar guides recommended proved over proven, and that advice has stuck with us to a certain extent."