Blockchain Basics: Blockchain Lab

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Explore the interactive Blockchain Laboratory and see how blockchain fundamentals work in practice. 

Click “Launch” on the lab option below to get started.




BLOCKCHAIN Example


1. Blockchain = a chain of blocks

2. What is inside a block?










3. Index = page number

4. Timestamp = when it happened










5. Hash = digital fingerprint
6. Valid hash









7. How is the block hash calculated?

8. Previous Hash = the link between blocks














9. Data = the actual information






10. Nonce = the number miners keep trying








11. Mining = finding a valid hash





12–13. What happens if someone changes the data?


14. Adding a new block



15. Peer-to-peer network


16. Peer messages



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