📅 DAY 1: VISUAL UNDERSTANDING (4-5 hours)
Morning Session (2 hours)
WATCH: 3Blue1Brown - “But how does bitcoin actually work?”
- Link: https://www.youtube.com/watch?v=bBC-nXj3Ng4
- Time: 26 minutes (watch it TWICE, make notes second time)
- Why: Best visual explanation of cryptographic hashing, digital signatures, and blockchain structure ever made
What You’ll Learn:
- Cryptographic Hash Functions (SHA-256): One-way mathematical blenders - you can’t reverse them. Change 1 bit in input = completely different output
- Digital Signatures: How you prove YOU sent a transaction without revealing your private key
- The Blockchain Structure: Why linking blocks with hashes makes tampering practically impossible
- Proof of Work: Why miners compete to find random numbers that make hashes start with zeros
THEN: Take Notes & Draw It Out (30 min)
- Draw the blockchain structure on paper
- Write out how a transaction gets signed
- Sketch how hashing works
Afternoon Session (2-3 hours)
READ: Mastering Bitcoin - Chapters 1-2
- Link: https://github.com/bitcoinbook/bitcoinbook (free, click “Read” button)
- Time: 2-3 hours (read actively, not passively)
Chapter 1: Introduction (45 min)
- History of Bitcoin (skip if bored, focus on tech)
- What problems does Bitcoin solve?
- Key Concept: Decentralization - no single point of failure
简单叙述 交易流程 新手获取与发送方式 发送如何得到确认
Chapter 2: How Bitcoin Works (1.5-2 hours)
- Transactions: Inputs and outputs (like digital IOUs)
- The UTXO Model: Unspent Transaction Outputs - Bitcoin doesn’t have “account balances”
- Transaction Fees: Why people pay miners
- Block Structure: Headers, merkle trees, transactions
Knowledge Check:
- What happens when you send Bitcoin?
- Why can’t you double-spend?
- What’s in a block?
重点 一次将所有input带入 出来 给商家 + change找零 = Output 加上小费
之后POW确保加在block里 需六层新block 完全确保交易不会被伪造 因为伪造需要往回挖 +1 block去撤销
每次input output都在同一链上