$ETH is a decentralized, open-source blockchain platform that enables the creation and execution of smart contracts and decentralized applications (dApps). Launched in 2015, it extends blockchain technology beyond digital currency, serving as the foundation for much of the decentralized finance (DeFi) and non-fungible token (NFT) ecosystems.
Key facts
Launched: 2015
Founder: Vitalik Buterin and team
Native cryptocurrency: Ether (ETH)
Consensus mechanism: Proof of Stake (since “The Merge,” 2022)
Use cases: Smart contracts, DeFi, NFTs, DAOs, and tokenized assets
Origins and Development
Ethereum was proposed in 2013 by Vitalik Buterin, who envisioned a blockchain capable of running general-purpose code rather than just processing financial transactions. Development began through a public crowdsale in 2014, and the network went live on July 30, 2015. It introduced the concept of a “world computer,” enabling decentralized applications without centralized servers.
Technology and Function
Ethereum’s core innovation is the Ethereum Virtual Machine (EVM), which executes smart contracts—self-enforcing programs that automatically perform actions when predefined conditions are met. Developers write contracts primarily in the Solidity programming language. Ether (ETH) fuels the network by paying for computation and incentivizing validators who maintain the blockchain.
The Merge and Sustainability
In September 2022, Ethereum transitioned from a Proof-of-Work (PoW) to a Proof-of-Stake (PoS) consensus model, an event known as “The Merge.” This shift reduced energy consumption by over 99% and laid the groundwork for greater scalability through future upgrades like sharding and layer-2 rollups.
Ecosyste
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