What is blockchain

Imagine you and your friends have a secret club. Now, you want to keep track of all the fun things you do together. You could use a regular notebook to write it all down, but what if one of your friends loses it or someone else finds it and changes whatu2019s written? Thatu2019s where Blockchain comes in! Itu2019s like a special notebook that you can all write in, but once something is written, it canu2019t be erased or changed. And, instead of keeping it in one place, itu2019s kept in many different places, so all your friends can see whatu2019s written. Itu2019s like a secret club diary that everyone can see and trust!

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