One year ago, Ethereum completed the "merge" and successfully transitioned from proof-of-work to proof-of-stake.<p>At the time of the merge, the most economically productive use for graphics cards was to mine Ethereum. The merge caused a worldwide crash in graphics cards prices. GPT 3.5 launched two months later.<p>If Ethereum had not merged and instead stayed on proof-of-work, it would have consumed 0.2% of global electricity over the past 365 days.<p>The merge was completed with zero network downtime, like swapping the engine of an aircraft mid-flight.