You know practically everything about the person who owes you money, and you are looking for someone else to collect debts for you by calling that person and his family members? You do not take into account that everything about that person may be false, but also that the threats are taken very seriously even if they come over the phone. Is $1500 worthwhile if someone ends up in jail for threatening someone?
I have a bad feeling about this, seeing OP's history, the fact that he was willing to buy bitcoins in Germany once and then put as a collateral an account with a verified Russian id, his Ponzi scheme, and the fact that he thought of this in the first place makes me think he might just seek revenge on somebody and there was no scam, no money theft and of course, there won't be any reward. Seeing what tantrum he threw for just 20$ this guy might be somebody who just beat him on some online game
Fortunately, even if somebody ignores all those red flags, I doubt there would be any moron who would take a job that could land him in jail for years for two weeks of minimum wage!