Hashgraph (backed by Dallas-based company Swirlds )has released an innovative brand new method for consensus within decentralized networks that are ABFT which utilizes a “Gossip” feature for fast data-transfer amongst nodes. It is arguably more efficient than PoW (see here https://www.youtube.com/watch?time_continue=1109&v…
…k variables involved (such as internet speed/throughput). Rather than imposing “work” or a “stake”, consensus in ABFT involves messages that are passed within the network to nodes — each node must then exert slight compute power to retrieve the message’s contents before passing it on. Then all nodes (at a minimum 2k+1 nodes with “k” denoting the number of potential bad actors/Byzantine faults) convene to agree on what information was transmitted, thus achieving consensus.