My understanding of the blockchain and bitcoin is not very clear, but I see from some articles. Before bitcoin broke out, many people lost their bitcoin because they lost their private key or made the wrong address. And the number of lost bitcoin should be a staggering figure, then these bitcoin really can not find it back?
Or will there be other ways to make up for this regret?
If you lost your private keys then your bitcoins will be very safer in the wallets but it forever can't get back.So we must need pass phrase or private keys if we need to access our bitcoins.
But the last bitcoins will be there but don't make any changes in the total supply so it will increase the price of bitcoin little bit.