@ron4yk
And I continue my marathon of learning cryptocurrency and today is Day 2, thank you for your support!
📚 Day 2: What Is Blockchain?
Simple words for a complex topic
1. 📦 What is blockchain?
Blockchain is like a chain of blocks that store information about transactions (crypto transfers).
Each block contains:
📄 a list of transactions,
⏰ a timestamp,
🔒 a cryptographic code (called a hash),
🧱 the hash of the previous block (this links the blocks into a “chain”).
To make it simple:
👉 Imagine a cash register that records every purchase in a notebook — but this notebook is public and cannot be altered.
2. 🔒 Why is blockchain considered secure?
📁 Data cannot be changed — once something is recorded, it cannot be deleted or edited.
👥 Decentralization — copies of the chain are stored on thousands of devices, not just one server.
👀 Transparency — anyone can view the records.
3. How does it work? — A simple example:
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