Neither I think? But I must admit I have no idea how blockchain tech would apply to the hacking of a computer. My bank account I want handled by humans and cour

Neither I think? But I must admit I have no idea how blockchain tech would apply to the hacking of a computer. My bank account I want handled by humans and courts in the end. There is nothing wrong with having public immutable ledgers making tampering visible. This is useful. But the question there is: what is the drawback of centralized ledgers, e.g like the ones for interbank transfers? Even git a git repo represents a kind of public ledger like that.