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21 BTC

Learn › The Bitcoin Standard › Lesson 9 of 11

Chapter 8: Digital money

This chapter explains how Bitcoin works in plain terms: a public ledger kept by many nodes, proof-of-work mining that makes rewriting history expensive, difficulty adjustment that keeps blocks about ten minutes apart, and a supply that halves new issuance roughly every four years toward a 21 million cap. The author argues this makes Bitcoin the first money whose supply cannot be inflated by anyone, regardless of how much demand rises.

Summary in our own words, not a quote from the book. The author's arguments, not investment advice. Book · Author's course

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Video

Digital Scarcity

▶ Watch on YouTube · Privacy-enhanced player (youtube-nocookie). Video in English.

Bitcoin's Supply Schedule

▶ Watch on YouTube · Privacy-enhanced player (youtube-nocookie). Video in English.

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Key ideas

  • Proof-of-work and difficulty adjustment
  • Halvings and the 21 million cap
  • Supply that does not respond to demand

Check yourself

  1. What does difficulty adjustment keep stable?
  2. Why doesn't higher demand create more Bitcoin?
  3. How often does new issuance halve?