It’s official, Ethereum is no longer proof of work—the second most popular blockchain after Bitcoin has finished its merge to proof of stake. So why is this a big deal and what does that mean for gaming?
Ethereum development started in 2014 and in 2015 the smart-contract-oriented blockchain gained major popularity and notoriety rather quickly.

Source: Hot Hardware – Ethereum PoS Merge Is Finally Finished, What Does This Mean For Crypto And PC Gaming?