Block Chain technology behind Bit Coin and other cryptocurrencies .
A chain is only as strong as the weakest link,(that’s a fact). How much did Mt Gox lose?
No not the ‘chain’ that was hacked.
“Why is it that when one man builds a wall, the next man immediately needs to know what’s on the other side?”
The chain wasn’t hacked, that is correct. You’d have to go back to the Genesis block and recalc/solve/prove every packet, not possible.
The wonder is why crypto platforms that hold your actual crypto balances aren’t using block chain to store the amounts of each currency?