🔗 Free Blockchain basics course with certificate

How blockchains work - hashes, blocks, consensus, wallets and keys, transactions and smart contracts - plus real-world uses and how to stay safe from scams. Ten short lessons.

What you will learn

1. What a blockchain is
2. Hashes: the digital fingerprint
3. Blocks and the chain
4. How the network agrees (consensus)
5. Wallets and keys
6. Transactions and fees
7. Smart contracts
8. Real-world uses beyond coins
9. Scams and how to stay safe
10. Careers and next steps

How it works

Open a lesson a day, mark it done, then take the quiz. Pass it and you get an XpertAcademy certificate with your name that anyone can check. Sign in to save your progress on every device.

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