Ofcourse it is!
Nowadays, I notice most of bounties have strick rules, making bounties more organize and I like that Bounty Manager requesting Proof of Authentication to limit scammer .
It's been one of major mistakes of bounty hunter like me not to read rules and requirements of each bounties ending up not getting stakes so it's very important to read and understand each rules to ensure that we're doing the right thing and not wasting our time and effort.
To have a great and successful bounty, Strict rules and regulations is absolutely needed to the bounties. Without it, bounties will be not organized. It also needs a strict bounty manager and assistant manager at the same time, to remove scammers