For those not aware of the technology world, Blockchain is a concept everyone must know. The concept is quite simple. Imagine a few blocks linked together with chains. That is it. However, there is information stored in each of the blocks which is different. So how to identify the blocks and what keeps this chain going?
Each block is assigned a hash which is like a unique code. Each box has its own hash and the hash of the previous box. This is how the information flows and the Blockchain stays functional. Changing the information in the box will change the hash and subsequently stop the chain.