Thats really good thing to do kyc for bounty, because alot of people use multi accounts

and takes more stakes/coins in pocket. Thats my opinion
All have a positive and negative impact on everyone who participates in this project because it is very doubtful to provide the right information about everyone's bio data. This is private

yes, telegram and KYC is best combination to prevent multi accounts, because some people will need to confir identity and not much have phone number on them
Is the situation with multi accounts and cheating is so spread among all the recent ICO projects and bounty campaigns?