I see so many services offering to double, triple and multiple in all possible amounts the coins you put to them. This doesn't sound very convincing to me but some of them are offering the list of blockchain transactions as a proof that coins were credited. Is this pure scam like I think or is there a possibility to realy make some coins? Would like to hear your thoughts and experiences.
they are usually a ponzi scheme, and that is surely a pure scam and there's no way that you can make some coins from a doubler or multiplier sites all of their proofs are just a props to attract and convince more users that they are really trusted but actually not . these are the kind of site that avoided since I got scammed .