Hey guys,
I'd like to warn you about the Guarium project. They had a giant bounty campaign with around 50k participants (judging by telegram group members).
They had all information from the participants. Necessary accounts, payout adress, also proof of the fulfilled tasks. Shortly before the payout they invented some unnecessary form you had to fill out to receive the bounty tokens. After closing it there was no chance to gain the tokens again.
They only communicated it in the telegram group, no information per e-mail, twitter or other channels, so it was really easy to miss. Just keep in mind it is a group with 50k members, as if anyone could read all messages.
So I am not saying that the project itself is a scam. But the managing is really dishonest and I'd like to advise you to handle them with care. In my experience good project are always honest and open and just stay far away from anything even remotely shady as this is.
Have a nice day!