Let`s us say that a exchange got hacked, Would there be anyway to ban those bitcoins? like blacklist the stolen coins so they cannot be used on the network? I know about going back in time with consensus of the network to a earlier block or forking and using that new chain, but could you just not ban the stolen coins? I mean make a way to do that?
If the new address was known, exchanges could blacklist the addresses. But eventually, the culprit could find a way to offload the coins.
I am talking about the bitcoin network blacklist the coins, not the exchange.