i was think is there any platform who can be a bridge for bounty participant and the project team? a platform that can prevent any "scam" or unprofessional word from the project team? maybe it is like an escrow platform that give a requirement to ICO Project team to hold project stake on the platform and distribute it automatically to the bounty participant after the project end?
You can try the following platforms (although I can't vouch for them to completely prevent possible scams):
1.
BountyHive2.
BOUNTYPLATFORM3.
BountiesAlert4.
BountyLord