At 2:43am EST on September 15, 2022, the first Ethereum block was validated using Proof of Stake, signaling the success of the Ethereum Merge, one of the most anticipated events in blockchain and computer science history. The Merge shifted the Ethereum blockchain (native token ETH, or ether) from a proof-of-work (PoW) consensus mechanism to a proof-of-stake (PoS) consensus mechanism, which has reduced the network’s energy usage by about 99.5%. Ethereum now facilitates a 7-day average of over one-million transactions per day, at a volume of over $600 million per day, making the Merge an engineering feat akin to swapping a car’s engine while it’s driving on the Autobahn.