What is Blockchain?

Think of blockchain as a special notebook that everyone in the world can read, but no one can erase or change what's already written.

Every time someone makes a transaction (like sending money), it gets written in this notebook. Once written, it's there forever — creating a permanent history of everything that's happened.

Each page in our special notebook is called a "block". Every block contains:

Think of it like LEGO blocks — each new block connects to the previous one, creating an unbreakable chain!

Here's where the magic happens! Each block is connected to the one before it, forming a chain:

Here's the revolutionary part: instead of one company keeping the notebook, thousands of people around the world each have an identical copy!

It's like if everyone in your neighborhood had a copy of the same photo album. If someone tried to secretly change a photo in their album, everyone else would know it's fake because their copies wouldn't match!

With thousands of copies, how does everyone agree on what's true? They vote!

This is like a group project where everyone must agree before making any changes. No single person can cheat because they'd need to convince the majority!