KYC to receive bounty? Of course not. You don't need to give your personal information just to receive a bounty or to participate in an airdrop. First of all you should know what the KYC documents is all about.

KYC means "Know your customer" and if you're just going to be a bounty participants you shouldn't need this one since it's only for customers or in short for investors in order to know if they're really eligible to be an investors. A KYC is used to control money laundering and other fraud related users to be investors but if a project requires you to submit KYC to participate to bounty there's a high chance that it was a SCAM I'll guarantee it.

Don't waste your identity just for a few buckets. They can use your identity to do fraud, believe in me.