Explore Block Chain Basics

You already know Bitcoin. That's actually the problem — most people learn blockchain backwards, through the coin, and end up thinking the two words mean the same thing. Nugget starts somewhere else: with a hash function you run yourself, one character changed, watching the entire output scramble. From there the rest of the architecture stops being trivia and starts being an answer to one question — how do strangers agree on what's true without a central referee?

You'll get to the point where 'who checks this?' stops being a live worry, because you can see the check: the cost of attacking a network exceeds any plausible payoff, whether that cost is burned electricity or slashed stake. Nugget sketches the block-by-block chain first — timestamp, hash, previous hash — and works you through what breaks when block ten gets edited, rather than asking you to derive a distributed ledger cold.

Smart contracts get the same treatment: no legal jargon, no assumption that a human can step in and renegotiate. You'll sit with the fact that deployed code just runs, bugs and all, and think through what that means for who's responsible when it doesn't do what anyone intended.