In 2025, blockchain ecosystems have expanded across multiple categories of chains like public chains, Layer2/Layer3 rollups, appchains, Avalanche L1s, etc. With this growth comes an explosion in on-chain data. And hence an effective indexing of blockchain data has become mission-critical: it transforms raw, immutable ledger data into actionable, rapidly-queryable information that is the foundation of modern dApps, analytics dashboards, regulatory reporting, and more. This article outlines the...