Hashing is a way of turning input data into a fixed-length digital fingerprint. Even a tiny change to the input can completely change the hash output. That makes it very useful for checking whether data has been altered.
A hash isn't a password. It's designed as a one-way fingerprint, so it's not possible to reconstruct the original data from it. In blockchain, hashes let you tell whether a block's data has changed.
text
"ThutaTech" -> 0x91a2...
"thutatech" -> 0x4c77...
Small letter change, totally different hash.You should see
Hashing works as blockchain's tamper-detection alarm.