I think that on this question is almost impossible to answer,but it is certainly of significant amounts.In the early days Bitcoin had almost no value and consequently those who have it are not really paying attention to security as is the case today.
For this reason I think that most Bitcoins is lost in this period.After price is hit 1000$+ people have become much more cautious,but even today we can read that people lose their coins in different ways.
For this reason I think that most Bitcoins is lost in this period.After price is hit 1000$+ people have become much more cautious,but even today we can read that people lose their coins in different ways.
I wonder how the people would feel like if they really did not give any importance to their bitcoins at that time and they see the price now, but that is actually right, a lot of people would have given no importance to it by thinking it's worth nothing and they have left their wallets with the coins and forgot the passwords or private keys and those bitcoins are locked their forever.
I think they don't mind it. The reason is that the fact they did not gave importance to their bitcoins, they would probably forgot that they have bitcoins in their old hard disk. So basically if that things happen, the bitcoin in that storage would probably gone forever. There are many cases like this. Bitcoins that have not moved from its addresses for years. This maybe one of the coins that are lost forever because owner cannot access the wallet address holding it.
