📖 EVM Overview

The Ethereum Virtual Machine (EVM) is the runtime environment for smart contracts on Ethereum and other EVM-compatible chains (Polygon, Arbitrum, Base, Optimism, BNB Chain, etc.). Code written in Solidity (or Vyper) compiles to bytecode that runs on the EVM.

🎯 Why EVM Matters

One language, many chains — Write Solidity once, deploy to Ethereum L1, L2s, and sidechains
Huge ecosystem — Ethers.js , Hardhat , OpenZeppelin , and most tooling targets the EVM
Standards — ERC-20 , ERC-721 , and other EIPs define tokens and interfaces

📚 Core Concepts

Concept	Description
Smart contract	Code deployed on-chain; immutable once deployed (or upgradeable via proxies)
Gas	Fee paid in the chain’s native token (ETH, MATIC, etc.) to execute transactions
ABI	Application Binary Interface — JSON description of a contract’s functions and events
EIP / ERC	Ethereum Improvement Proposal / Ethereum Request for Comments — standards for tokens and behavior

🔗 EVM Chains (Examples)

📖 In This Section

ERC20 Tokens — Fungible tokens
ERC721 NFTs — Non-fungible tokens
Hardhat — Development and testing
Proxy Contracts — Upgradeable contracts
Smart Contract Security — Best practices
DApp (EVM) — Frontend tooling (Scaffold-ETH, Wagmi, RainbowKit)