Three startups are getting ready to launch one of the most ambitious and important cryptocurrency experiments since the creation of bitcoin itself. Called Lightning, the project aims to build a fast, scalable, and cryptographically secure payment network layered on top of the existing bitcoin network.
Essentially, Lightning aims to solve the big problem that has loomed over bitcoin in recent years: Satoshi Nakamoto’s design for bitcoin is comically unscalable. It requires every full node in bitcoin’s peer-to-peer network to receive and store a copy of every transaction ever made on the network.