He has a contract with an exchange that includes privacy and he can not give me information. No screenshots, no contracts, no transfers, but I saw that he has 20 bitcoins in his user.
Are you aware that it's super easy to create a web page that shows like it would have 20 BTC in an account?
However, it doesn't matter. If a Bitcoin withdrawal has been made, it is recorded on the blockchain and it has a transaction ID like (I've just looked up randomly for a transaction) :
5c0aa063e9b922e9cb5afef046caf03371ae5ea9340d85dad3948a25e9ffe5ba
Even more:
do you actually have a Bitcoin wallet? To what address were you supposed to get those coins? A Bitcoin address looks like one of these (again, random addresses, please don't use) :
1BvBMSEYstWetqTFn5Au4m4GFg7xJaNVN2
3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy
bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq
You seem to be in the middle of a story you have no idea about. At all. If you were not even asked for an address, then how you would expect to receive anything back?!
My country is a sanctioned country. I could not access the money changers. In my country, everything is boycotted, even breathing.
Knowledge too? I see that now you are here. Why didn't you come here and learn a little before sending $700k into the unknown?