🔸 What is Hashing?
A hash function turns input data into a fixed-length string (a hash). In blockchain, this ensures data integrity.
🔐 Properties:
Deterministic: Same input = same output

Fast to compute

Irreversible (you can’t reverse-engineer the input)

Small changes in input = vastly different output

🔢 Example (SHA-256):
Input: Hello
Output: 185f8db32271fe25f561a6fc938b2e264306ec304eda518007d1764826381969