Ethereum
ETHA decentralized world computer enabling programmable smart contracts and decentralized applications.
Executive Summary
Ethereum is an open-source layer-1 blockchain platform proposed in 2013 by Vitalik Buterin and launched in 2015. It introduced smart contracts, allowing developers to build decentralized applications (dApps), financial protocols (DeFi), and digital tokens.
How It Works & Architecture
EVM & Smart Contract Execution
The Ethereum Virtual Machine (EVM) acts as a global decentralized computer that executes code deterministicly across thousands of node validators.
Developers write smart contracts in languages like Solidity. Users pay a computation fee called "gas" (denominated in gwei) to execute transactions and state transitions.
Proof-of-Stake Consensus (The Merge)
In September 2022, Ethereum transitioned from Proof-of-Work to Proof-of-Stake (PoS) in an upgrade known as "The Merge".
Validators lock up (stake) 32 ETH to secure the network, reducing energy consumption by over 99.9% while introducing staking yield mechanics.
Primary Use Cases
Key Advantages & Considerations
Advantages
- Largest developer ecosystem and smart contract network effect
- Environmentally sustainable Proof-of-Stake consensus
- Deflationary supply dynamics during high network activity (EIP-1559)
Considerations
- Base layer congestion during peak usage leading to high gas fees
- Complex smart contract security risks and potential code exploits
- Increasing protocol state size requirements for node operators
Frequently Asked Questions
Q: What is the Ethereum Virtual Machine (EVM)?
The EVM is the execution environment for smart contracts on Ethereum, serving as the industry standard adopted by dozens of compatible layer-1 and layer-2 blockchains.
Q: What was "The Merge"?
The Merge was Ethereum’s historic upgrade in 2022 that successfully migrated the network from energy-intensive Proof-of-Work to Proof-of-Stake consensus.
Disclaimer: This article is provided strictly for educational and historical informational purposes. It does not constitute investment, financial, tax, or legal advice.
