so how do we know that crypto exchngers dont sell us the coins what they dont exisit?
and how do we know those big funds who bought or pretinding to buy or sell some big ammounts of cryptocurrency `?
how do we know they dont lie us ?
I think if you choose to buy bitcoin in a trusted exchanges ,then you do not have to worry. Just be worried if you are using fake or scam exchange to buy bitcoin because it will surely send you a wrong coins. It's easy to know if they sent a right coin because after the transaction, you will be able to see it in your own wallet address.