This Is How I Explained Blockchain to Her, and She Instantly Got It

Today, my younger sister came home from school at noon and suddenly asked me, "What is blockchain?" 😅 I wondered why she was asking out of the blue—turns out, her teacher briefly mentioned it in class, and she found it really interesting. So, I explained it to her like this:

Blockchain is essentially a decentralized ledger technology that allows multiple participants to collaboratively maintain and update data.

Each "block" contains a set of transaction records and is linked to the previous block, forming a "chain." This structure ensures data transparency, security, and immutability.

Blockchain has a broad impact on cryptocurrencies, smart contracts, and supply chain management. In fact, it also drives the development of decentralized applications.