Ethereum 2.0
Web3 / blockchain technology
Ethereum 2.0 was the original umbrella term for a comprehensive set of upgrades transforming Ethereum from a proof-of-work network to a proof-of-stake consensus mechanism, with the intention of dramatically increasing scalability, security, and sustainability. The Ethereum Foundation later restructured its naming convention, referring to specific upgrades as "The Merge" (transitioning to proof-of-stake in September 2022), "The Surge" (scaling improvements), "The Scourge" (censorship resistance), "The Verge" (verification efficiency), and "The Purge" (data storage optimization). These upgrades represent the most significant evolution of a major blockchain network, fundamentally changing how Ethereum secures its network and processes transactions. Example: The Merge in September 2022 was the central event of Ethereum 2.0, transitioning the network's 32 million ETH into staking, reducing energy consumption by approximately 99.95%, and enabling future scaling solutions like sharding. Why it matters for blockchain technology: Ethereum 2.0's transition from proof-of-work to proof-of-stake demonstrated that major blockchains could successfully upgrade their consensus mechanisms, reducing environmental impact while improving efficiency. This proved the viability of proof-of-stake for large-scale networks.
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