Around April 2019 and April 2020, the number of Lightning Network nodes increased from 4,000 to 5,000, before soaring to over 10,000 this month. The network's growth is due to the addition of large crypto exchanges and payment applications. Lightning Network is a peer-to-peer network that runs on top of Bitcoin's blockchain. As a result, the leading network is freed from restrictions, allowing for sub-second transaction times.