[hackingforfun]

No concept of ownership is a stretch. If you have the keys to a Bitcoin wallet, you own that Bitcoin wallet. If you lost physical cash or gold, it would be like losing your keys to a Bitcoin wallet. No one would replace your physical cash, gold, or Bitcoin, if you lost it. However, that doesn't mean that you don't own that physical cash, gold, or Bitcoin, at least while you have it in your possession.

[lottin]

Well, when it comes to bitcoins, you only own them as long as you have them in your possession—which means you don't own them, you only possess them. This is what I mean by no concept of ownership. The bitcoin network doesn't care who is the rightful owner of the bitcoins, it only cares about who has access to them.