In 23 days the Ethereum network will transition to a proof-of-stake (PoS) consensus algorithm after operating as a proof-of-work (PoW) blockchain since July 30, 2015. While the change may not mean much to ethereum users and traders, what’s changing under the hood is a very big deal.
You’ve Heard About The Merge, Why Is It a Big Deal?
Next month will be a monumental time for the Ethereum network and its participants. The Merge will likely be one of the most anticipated and recognizable upgrades the blockchain has seen since The DAO hard fork. On or around September 15, 2022, Ethereum will implement The Merge and that means the chain will completely change the consensus mechanism it once used. Since the blockchain was created, Ethereum’s consensus mechanism has been a proof-of-work (PoW) scheme, similar to Bitcoin’s consensus mechanism.
However, instead of the PoW consensus mechanism SHA256, Ethereum relies on a scheme called Ethash, a PoW consensus agreement preceded by a mechanism known as Dagger-Hashimoto. The main goal of Ethash was to offer ASIC resistance but after a few years, Ethash ASIC miners appeared on the market alongside the use of graphics processing units (GPUs). Similar to Bitcoin’s PoW consensus algorithm, Ethash miners must put forth the computational cost of purchasing and operating ASIC or GPU miners, and using electricity.
When The Merge takes place, Ethereum will not depend on miners to validate transactions. Instead, the network’s transactions will be validated by entities called validators. By using a PoS consensus mechanism, Ethereum validators are selected by owning 32 ether and they are required to run three different pieces of software which include a validator, an execution client, and a consensus client. At the time of writing, 13,406,821
