A blockchain consensus method named after the Byzantine General problem, which is a fictional story about two generals on the same side who are flanking their enemy. One general has to deliver an attack plan to the other general and proceed without knowing if it was received or not.
There are several variations of the Byzantine consensus protocol; however, they all wind up agreeing that a particular block of transactions is the next valid block. See
blockchain and
consensus mechanism.
The Byzantine Name
Part of the Roman Empire from the 5th to 15th centuries was known as the Byzantine Empire. The capitol was Byzantium, which today is Istanbul.