Founder Vitalik Buterin celebrated Ethereum's 9th birthday. Here's a timeline of key events:

⚫ 2013: Ethereum whitepaper created

⚫ 2014: ETH initial coin offering (ICO) raises $18m in BTC

⚫ 2015: Ethereum blockchain proof-of-work (PoW) goes live - Codename "Frontier"

⚫ 2016: DAO hack - $50m ETH stolen

⚫ 2017: Byzantium fork - block rewards reduced from 5 ETH to 3; ETH NFTs launched

⚫ 2019: Ethereum optimizes gas fee structure

⚫ 2020: Introduction of the proof-of-stake (PoS) "Beacon Chain"

⚫ 2022: Transition from PoW to PoS

⚫ 2023: "Sharding" begins, enhancing speed and efficiency