Damn, didn't knew that Bitcoin doublers is still big thing in 2019. When I just started 4 or 5 years ago, there was so many doublers. And as I remember, they already used similar technique to attract investors - they were making fake transactions between themselves to make look them legit.
But I never understood how people can be so naive to invest into it. Do they think that Bitcoins grows on a tree and it can be doubled just in 24 hours? Who needs miners when we have Bitcoin doublers...
When we came in crypto world few years back, we did think that bitcoins grows on tree
It is the experience which tell us that bitcoin doublers are scam. But they fact is there are still many new people coming to crypto with the thought to become rich quickly and scammers try to find such people and scam them even in 2019 and it will continue many more years too.