> And even if it were, why roll back the block chain to rectify the situation? In traditional accounting, wouldn't you need a ledger record of both the mistake

> And even if it were, why roll back the block chain to rectify the situation? In traditional accounting, wouldn't you need a ledger record of both the mistake and its correction? This is exactly what happened. The blockchain wasn't rolled back. New transactions crediting the victims were injected into it.