Sure, here's the updated history:

Signum (formerly Burstcoin) is a cryptocurrency that was created in 2014. It originated as a fork of the NXT blockchain and its codebase. It is based on the Proof-of-Capacity (PoC) consensus algorithm, which allows users to participate in mining using their hard drive space instead of computing power. This makes it more accessible and environmentally friendly compared to other cryptocurrencies that rely on Proof-of-Work (PoW). In 2020, the Burstcoin community rebranded the coin to Signum as part of a larger effort to expand its reach and improve its technology. The project continues to be actively developed and has a strong community of supporters.