Based on my research. Bitcoins are stored in a virtual wallet. A separate private key allows the owner access to the wallet's contents. If a Bitcoin owner dies without passing on the private key, his heirs may discover his wallet only to realize that they will never gain access to the wealth inside.
Let me correct it. It is not "based on my research". That sentences are completely wrong. You should say this :
"Based on Cointelegraph article research" (& i did some cyrillic works).. bla bla bla