Hashgraph is a new consensus alternative to the blockchain. It uses a gossip protocol that works in the following manner: Every node in Hashgraph can spread signed information (called events) on newly-created transactions and transactions received from others, to its randomly chosen neighbors. These neighbors will aggregate received events with information received from other nodes into a new event, and then send it on to other randomly chosen neighbors. This process continues until all the nodes are aware of the information created or received at the beginning. Due to the rapid convergence property of the gossip protocol, every piece of new information can reach each node in the network in a fast manner.