Yeah, I can give a simple rundown. Basically, all data on-chain—like transactions, wallet balances, exchange flows—are public on the blockchain. Anyone can see it if they dig through blocks, but it’s raw and messy.

Services like Glassnode or CryptoQuant run nodes and gather this data automatically, then process it into neat charts, metrics, and indicators. They basically “query” the blockchain, track addresses, and aggregate info like exchange inflows/outflows, hodler behavior, or active addresses. If you want to learn more, I’d check Glassnode’s blog or resources like “The Bitcoin Standard” or free on-chain analytics tutorials—they explain it step by step.