Decentraland Authentication Middleware

Multi-framework middleware (Express, Koa, PassportJS, Well-Known Components) for authenticating HTTP requests signed with @decentraland/SignedFetch. Current stable version is 1.3.0 (June 2024), with minor releases every 6–12 months. Key differentiator: unified auth verification across Node.js web frameworks using Ethereum signature-based identity, suitable for Decentraland dApps. Supports optional verification, configurable expiration, and metadata content verification. Depends on @decentraland/crypto for signature logic.