Money/Intelligence/Energy/Humanity
067.
How Bitcoin Works Under the Hood (Must Watch)
Also on YouTube.
An episode that steps back from macro and markets to sit with the mechanical plumbing of Bitcoin itself — private keys, transaction chains, SHA-256, and the difficulty adjustment. Rather than defending Bitcoin as an idea, the walkthrough asks what happens when someone actually inspects the machine: how the pieces cohere, why the double-spend problem was genuinely hard, and what kind of conviction becomes possible only after the math checks out for oneself.
Takeaways
- 01
Bitcoin does not store balances — ownership is a chain of unspent transaction outputs that every full node re-verifies back to the genesis block.
- 02
Digital signatures secure authorization but not ordering; the blockchain and its cryptographic hash exist specifically to solve the double-spend problem.
- 03
SHA-256 outputs cannot be worked backwards, so finding a valid block requires trillions of guesses per second — this is where energy becomes an anchor to the natural world.
- 04
Because each block's hash is an input to the next, no attacker can pre-compute a chain; every ten minutes the race resets on top of a fresh, unknowable value.
- 05
The difficulty adjustment recalibrates the hash target roughly every two weeks, preserving the ten-minute cadence regardless of how much hash rate joins or leaves the network.