What would happen if for some reason, every computer connected to the blockchain was disconnected, and no peer-to-peer connection was established with the blockchain protocol between 2 users.
Would all the transactions recorded on the blockchain be lost ?
Also what if theoretically only 1 or 2 connections remained connected to the blockchain, wouldn't it be easy for them to just add more transactions to the chain and everyone would need to trust their blockchain state since there is no other copy of it elsewhere*(or are they stored locally on devices even if they disconnect??)* ?