KYC, It stands for "Know Your Customer." Imagine when you go to a new school, and they need to know your name, where you live, and other details to make sure you're really you. In the financial world, banks or companies do the same thing to check that you're not pretending to be someone else, or doing something bad like using fake money.

Now, blockchain is like a special notebook that everyone can see, and it keeps a record of everything. But once something is written down, no one can change it. So if you buy a toy, it goes in the notebook, and everyone knows it's yours. This way, everything is fair, and no one can cheat.

Together, KYC helps companies know who you are, and blockchain makes sure everyone plays by the rules.