Till now I am receiving regular payment and have met them in their office as well. They have a setup in Delhi for years and have not missed any payout til now. I have spoken to appx 10 people who are associated with GainBitCoin and they have a very good feedback about them.
One of the bollywood celebrity also is now associated with them.

Now I have 17 people in my downline and I am earning appx 1 bitcoin per month. So can't complaint

We cannot be sure of any website or company's existence in the future. Be it any company in the world.
Take an example of DAEWOO motors, ORKUT, BLACKBERRY,etc Its only the time which can tell.
Yes there are risks involved in everything or anywhere we invest. Its a simple and basis law of business "no risk no profit"
Let's see how far GAINBITCOIN will take me from here. As example of my friend's income is more than enough for me.
Being associated with this company with a couple of years and earning 7.20 BTC every month is more than enough for me to believe.

But yes, for those who have not invested anywhere, please do a proper study first, ask your friends, those who are already working, use social media inquiry, and when you are fully satisfied, then only invest.

No one can be ever sure which scheme is ponzy and which is not. It's your risk or reward ultimately.

I also used to believe that the company is a scam, untill i was shared the proofs of receiving the output. I dont know how they workout the math, but till the time I am receiving my BTC I am a happy customer.

I was introduced to gainbitcoins by a friend of mine whom I know for many years, but was not intereste in bitcoins as I always thought its a scam or a ponzy scheme. She then showed me all the psyment proofs. She has been investing in gainbitoins for many years and is earning a very handsome amount. Her lifestyle is completely changed and after watching this and all her BTC statements I had invested in Gainbitcoin.

I had again invested with 3 BTC with them and I am awaiting payment, which is scheduled on 1st week of March'2017.
I just foundout this post thought of letting you know about this information. Lets wait for few dayd till I receive my output. I may not be available to the post here, so you can contact me via whatsapp on 9910168276 or mail at dsrawatmail@gmail.com. Lets see!!

Do text/mail me when you read this post, so that I can myself findout whether its ponzy or a scam. Then may be you can invest.