Scrutineer
/ˌskruːtəˈnɪr/
Definition 1 of 1
Pro Tip 1/3Official Role
Used for someone with a formal, authorized position to review processes. 
The scrutineer at the debate contest ensured all rules were followed.
Pro Tip 2/3Validation
Focuses on confirming the accuracy or legality of details, often documents or votes. 
The scrutineer checked every ballot to validate the election results.
Pro Tip 3/3Not a Judge
While scrutineers ensure fairness, they don't decide outcomes like a judge would. 
The competition's scrutineer monitored the scoring, without influencing the final verdict.