Why are there so many scam bounties out there and how are we to know which is scam or not
To know it I prefer to use google search although not 100% accurate but 87% of which lead to positive results.
We don't know what is the real project and scam project, because as of now 90% of all ICO are scam.
This's true just like what was said by the Vitalik Buterin (the creator of Ethereum) a few months ago.