id be down to help out. but as far as proofing. have people record starting in discord, pinging a room and then including the very next game in the same recording. oh and give a point for just submitting as a consolation
just verify the top 10 or so scores, that way it adds some credibility without scaling how much staff you need as more people submit challenges. then just give points to top 10 to start the challenge run a command to begin a session, which creates a channel to submit the replay id in. you could have some logic to figure out when the replay started with respect to the session, or maybe there is something in the hypixel API; to weed out duplicate runs as best as possible