I have really limited knowledge about it, I am going to share what I understand about this topic first and need your help/opinion to understand it properly

When we are doing a transaction what miners are doing is they are registering it in a block that they have newly discovered by solving bitcoin algorithm (SHA256)
And this process it known as PoW

What is the function of Bitcoin nodes here? Listing the block (transactions) in database ?

How node are collecting data and where it is collecting its data from ?

How Whaleclub providing 20X Leverage in Crypto trading

Let suppose, if minimum 100 online users (On average they have about 800 - 900 online users) all sell 25 BTC at a same time Whaleclub should have to have 25 x 100 x 20 (leverage)= 50000 BTC in their reserve , Where Big exchanges like Bittrex have about 20K - 30K at any given time.

  As well as lots of popular forex trading site who offers crypto trading, do not provide any leverage on any crypto trading!

  So I am confused, If you guys have any opinion please share...

#BitConnect  is not a #Cryptocurrency. Its a contract!!!!
Don't know what peoples are doing!
#BTC- #BCC / #USD #DUMP

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