No way anyone is going to buy this without a face to face unless verified and reputable TM or LLC.. Dividing up the buys with multiple sellers is also a headache, the biggest roller I've ever seen on local exchange was only selling $50,000.00 and looked kind of shady..
My personal method is Electrum wallet on Tails OS or Android(5.1 with FDE) and physical meetups where I have the cash or a bank money order. This is likely how such a high roller would do it too since it's the most secure method. I'm not sure why anyone would use personal identification with BTC unless it was a virtual exchange, and virtual exchanges are too risky and too capped.. If you can't verify block-chain confirmations there with the seller present it's a idiotic exchange method.
I also carry a 9mm with me on these deals for anyone who wants to bring up the risk of easy robbery. I go with reviewed sellers too.
No, everyone understood you meant 4000 BTC I think. That is not a whole incredible amount. That is about 1/3 of todays volume at Bitfinex. If someone put up a 4000 BTC buy order at a decent price, I bet it would get filled within a day.
If you start making 100k a year in your teens you make around 5 million before you die or get too old..... Most people in Holywood have a net worth of less than ten-million after decades in..... 1 million is a lot
I've yet to see a trade or exchange site that can even handle over tens of thousands in a day. If I put up a 10,000-20,000 buy or sell on LocalBitcoin people get flakey/scared..
Don't know where you live but such trades between individuals, specially if made with cash, are illegal in many countries.
I'm not going to say that a million dollars is peanuts, but you want even move the price with that kind of order on exchanges, and you can make that buy pretty quick, not counting transferring the money, current trade volume is around 50k bitcoins a day, if you spread the buy between the top 3 exchanges it will get filled pretty quick.
People buying at that amount given the history of BTC aren't doing it for profit from selling at profit or trading at profit. They're doing it to transfer an amount to a buyer or seller who will then likely put it through a tumbler and do sales.
If anything considered tax-evasion by most governments was off-limits this forum and blockchain data would be a lot smaller.. I was just pointing out how there was no actual support for large transfers by any exchange or seller so the market is capped anyway..