In the cryptocurrency world, consensus mechanisms are protocols and algorithms that enable computer networks to work together to ensure network security. 51% of the nodes in the network must agree on the global status of the network in order to reach a consensus.

A recent study proposes a new blockchain consensus proof-of-work (PoW) scheme that relies on quantum computing techniques to verify consensus.

Speaking of consensus mechanism, in fact, he is a mode of verification and confirmation of the transaction, he is mainly through the vote of the special nodes to complete the confirmation, in general, if for a transaction, a number of interests of unrelated nodes can reach a consensus, then we will be defaulted to the whole network can also reach a consensus.