How to explain Bitcoin Whitepaper to a 8 year old kid - Part 3
2025
Proof of Work - How Bitcoin keeps everyone honest
To make a new block, miners must take all the transactions, add some random number called a nonce, and run everything through the SHA-256 hash machine. They keep changing the nonce and hashing again...until the hash starts with a certain number of zeros!
Thats really hard to find — it can take millions or billions of tries! But once a miner finds it, everyone can quickly check that its correct. Thats why its called proof of work.
Why It Keeps Bitcoin Safe
Once a block is accepted, its chained to all the blocks before it. If anyone wanted to change something from the past, theyd have to redo all that work — not just for one block, but for every block after it too!
In short:
- 💪 Proof of Work ensures only honest miners can add blocks.
- 🧱 The longest chain is the real one — built by honest work.
- ⚖️ Bitcoin adjusts itself over time to keep everything running smoothly!
P.S. The content was assisted by AI