Imagine a vending machine. It has 1,000 coffee beans and 1,000 coins. No menu, no cashier β€” just one iron rule: the product of the two numbers inside must never decrease.

That's it!

This is how Uniswap works β€” and this is what I built on Day 6, coming from .NET. Here's how, why it's elegant, and where you can step on a rake.

Why an Order Book Doesn't Work on a Blockchain

Traditional exchanges β€” Binance, NYSE, any CEX β€” run on an order book. Market makers post bids and asks. A matching engine pairs them. Millions of updates per second, all in a centralised database.