What is a hardfork?

The hardfork is a steady concept in crypto – the industries. The sense consists in the modification of a chain of units, to be exact in its division into 2 circuits where one of them finds new rules of functioning of the protocol and ceases to interact with other circuits.

In case of a hardfork, the new circuit contradicts old so that the units recognized valid in one part will not be read by those in another. The hardfork implies “birth” of new cryptocurrency.