InfrastructureLetter: E

What is Ethereum (ETH)?

Definitive Definition

Ethereum is a decentralized, open-source blockchain featuring smart contract functionality and the Turing-complete Ethereum Virtual Machine (EVM), serving as the foundational settlement layer for global DeFi, NFTs, and Layer-2 rollups.

In-Depth Architectural & Economic Analysis

Conceived in 2013 by Vitalik Buterin and launched in 2015, Ethereum expanded blockchain utility from simple currency transfers to programmable computation. In 2022, Ethereum transitioned from Proof of Work to Proof of Stake via "The Merge", cutting network energy consumption by 99.95%.

Core Characteristics & Mechanism

Powers the Ethereum Virtual Machine (EVM) standard adopted across dozens of blockchains.
Secured by over 30 million staked ETH deposited across hundreds of thousands of validators.
Implements EIP-1559 fee burning mechanism, introducing ultrasound deflationary supply dynamics during high network activity.
Acts as the primary data availability and settlement layer for Layer-2 rollup scaling.

Practical Application Scenario:

Thousands of Web3 applications settle daily financial transactions directly onto Ethereum mainnet.

Primary Sources & Formal Specifications (E-E-A-T)

Ethereum Whitepaper: A Next-Generation Smart Contract and Decentralized Application Platform— Vitalik Buterin (2013-11-01)
Ethereum Yellow Paper: Formal Specification of the Ethereum Execution Environment— Dr. Gavin Wood (2014-04-01)

Related Glossary Entries in Infrastructure

Account Abstraction (ERC-4337)

Account Abstraction is an Ethereum standard (ERC-4337) that transforms traditional externally owned accounts (EOAs) into programmable smart contract wallets, enabling social recovery, gasless transactions, multi-operation batching, and biometric Passkeys without consensus changes.

Blockchain

A blockchain is a distributed, immutable cryptographic ledger of batched transaction records shared across a peer-to-peer node network. Each block contains a cryptographic hash of the preceding block, an exact timestamp, and validated transaction data, preventing retrospective tampering.

Cross-Chain Bridge

A cross-chain bridge is a cryptographic protocol and smart contract system that enables the transfer of tokens, data, and arbitrary messages between two distinct, sovereign blockchain networks.