I have seen a video on bitcoin. On that video there was a person who had many bitcoins but at that time bitcoins were not so much used so he hidden those bitcoins in a place and made document about where the bitcoins was. But alas! When bitcoins got market he forgot where he kept those and lost the document. I don't know the exact price but it was more than 1 million.
Can you tell me is it a real or fake?
You should also add the link for video you watched.
Possible that its real, there are many people before that forget thier key and hard to recover the bitcoin they have before . Because they never realise that it will be valuable someday and they dont stored the key to secured place.
You can read article about the lost/unrecover bitcoin
https://www.investopedia.com/news/20-all-btc-lost-unrecoverable-study-shows/ .