Verified (6)
(Other definitions for proven that I've seen before include "Established with evidence" , "Adjective meaning demonstrated beyond doubt" , "Established beyond doubt" , "Conclusively demonstrated by evidence" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">verified</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Another definition for proved that I've seen is " Established beyond doubt".)