BitCoin Multipliers - Are any legitimate?

[Xenophoto]

There are no legit investment that can double your money under 100 days, even if some one tells you they can double your money in 100 days
You need to make sure that they are not running away.
Otherwise any amount of money you give to them is gone for good and never send any thing to any such sites in hope of profit since they just
Opened up and might pay you, none they just take it and nothing you can do.

Even if the investment sites say that they will not run away. Or even if it doesn't seem like they will run away. They will always have a set of lame reasons to not pay you. There's no such thing as assurance that someone will not run away. 100 days is such a long time to transfer all the money of other people to your personal wallet. And also, the admins behind the investment site you're in is surely untraceable or lacks info. Doing business in bitcoins gives you the anonymity privilege which is getting abused by ponzi scammers.

[Herbert2020]

they are all scams but it doesn't stop there at those sites claiming to double or multiply your bitcoin in 24 hours.

you should ask yourself this: how are they making profit? and if you can't come to a good answer then they are scam. all these sites have one thing in common they are giving you a big profit while they are not really running any business that makes that much profit to share it with you.

[Wendigo]

I would stay as far away as possible from these investment programs. These websites might pay out some users in the beginning to appear trustworthy but as more people invest money hoping to turn a quick profit the operators can close shop when they feel they have accumulated enough cash and run for the hills with everyone's money. The more improbable their interest rates are the more likely it's that they are going to scam you. Just take with a big grain of salt whatever promises they have written on the websites and only put money at risk that you can afford to lose.

[Divinespark]

In a word: no. Avoid these scams like the plague.

[BitcoinSupremo]

Let me rephrase in a very short sentence what a Bitcoin Multiplier is:

They have absolutely the largest number of victims compared to all other Ponzi, HYIP, Pyramid schemes out there.

I don't feel sorry for these victims, because they think they can be rich overnight, which is not possible and they end up losing all of their money.

Stay away.

[jak1]

Everyone ask you to give him money and he'll pay you double after some time. it is 100% ponzi and fraud.
I have also lost much money in these type of doubler sites. where a time running of 100 hours and promise you to pay you double after 100 hours but you'll never get paid ever..
so don't waste your money in such type of things.
Gambling is even batter then them where you have some chance to win atleast.