The Secret Sauce of ZK-Rollups: Imagine you want to prove to a club bouncer that you are over 21, but you don't want them to see your name, address, or birth date. You just want them to see a "Yes" or "No." In 2026, Zero-Knowledge (ZK) technology does exactly this for your money. It "bundles" thousands of transactions into one tiny proof.

The main blockchain only has to verify that one proof instead of checking 1,000 separate transactions. This is why fees dropped from $50 to $0.01. It’s the ultimate combination of privacy and speed.