Historical replay · ETH/USD
Ethereum's "The Merge" (September 2022)
On September 15, 2022, Ethereum completed "The Merge," switching from Proof-of-Work to Proof-of-Stake — one of the most significant technical upgrades in crypto history. Unlike the crashes in this replay, price moved relatively little: the event was already widely anticipated.
Since Ethereum launched in 2015, its roadmap had always called for a switch from the Proof-of-Work consensus mechanism (the same one Bitcoin uses, based on mining) to Proof-of-Stake, a system where validators lock up ETH as collateral instead of competing with computing power. The project, nicknamed "The Merge," took years of development and testing on trial networks before the final switch on the main network.
On September 15, 2022, at around 06:43 UTC, the Ethereum chain officially merged with the Proof-of-Stake Beacon Chain, completing the transition without service interruption. The upgrade is estimated to have cut the network's energy consumption by over 99%, removing the need for dedicated mining hardware to secure the network.
What makes this event an interesting case study is precisely how quiet it was: unlike many events in this replay, ETH's price had no particularly dramatic reaction in the surrounding hours, because the date and technical details had been known and widely discussed for months. It's a good example of how a fundamentally important upgrade to the underlying technology doesn't necessarily produce a proportional price move once the market has already had time to price it in.