If its bitcoin related, it is very difficult to convince people to invest specially because of all the scams that have happened in the past.
I understand that people where scamed a lot but if the project is backed up with some proof what would the bitcoin community be interested in?
And what kind of proof should be provided that would satisfy investors/donators?
Proof for what ? I guess you will have to be a citizen of a gambling allowing country and have to reveal your identity. Apart from that, you can consider doing multisig with a Very trusted member of the forum.