Blockchain
A shared, transparent digital ledger that records every transaction securely and permanently.
A blockchain is a digital ledger — a shared record book that everyone can see, but no one can secretly edit.
Each “block” contains verified transactions, and once added, it becomes permanent.
All blocks are connected in order — forming the “chain.”
Instead of banks or governments, a network of computers (nodes) keeps the blockchain running and verifies all activity.
Why it matters
- Removes the need for middlemen in finance and data.
- Makes systems transparent, tamper-proof, and open to anyone.
- It’s the foundation for Bitcoin, Ethereum, and all modern cryptocurrencies.
How to understand it simply
- Imagine a public notebook where anyone can write but no one can erase.
- Everyone has the same copy, updated together.
- That’s how trust is built — through math and transparency, not authority.
💡 Lanzo Tip
Every crypto project exists because of blockchain.
The better you understand it, the better you’ll understand why crypto matters.