In what year did Ethereum begin?
Ethereum was born in 2015 and is an open source platform based on blockchain for running smart contracts. Its early development was focused on building infrastructure, and it subsequently experienced the ICO boom and the rise of DeFi. The 2.0 upgrade launched in 2020 aims to improve scalability and security. Currently, Ethereum is the largest smart contract platform and plays an important role in the blockchain industry. 
Year of Ethereum’s birth: 2015
Ethereum is a blockchain-based A decentralized open source platform based on blockchain technology, designed to run smart contracts. It was first conceived by Vitalik Buterin in 2013 and officially launched on July 30, 2015.
Early development
The early development of Ethereum was mainly focused on building core infrastructure and development tools. In 2016, the Ethereum Foundation was established to support research and development of the platform. In the same year, the first stable version of Ethereum, "Frontier", was released.
Initial Coin Offering (ICO) Boom
In 2017, the initial coin offering (ICO) boom attracted a large number of investors' attention to Ethereum. An ICO is a way to raise funds through a blockchain platform, issuing tokens as rewards to investors. This resulted in a significant increase in the value of Ethereum and attracted a large number of developers building decentralized applications (dApps).
The rise of decentralized finance (DeFi)
After 2018, Ethereum began to turn to decentralized finance (DeFi). DeFi is a range of blockchain-based financial services including lending, borrowing and trading. This makes Ethereum a hub for crypto asset trading and innovation.
2.0 Upgrade
In 2020, the Ethereum 2.0 upgrade was launched, aiming to significantly improve the scalability and security of the platform. The upgrade involves transitioning from a Proof-of-Work (PoW) consensus mechanism to a Proof-of-Stake (PoS) mechanism.
Current Status
As of today, Ethereum remains the largest smart contract platform with a large number of dApps, DeFi services and users. It plays a vital role in the blockchain industry and continues to attract the interest of developers and investors.
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