Transition to Web3 - Course 1 | Blockchain Basics
Hashing the data - cont
Hashing the data - cont
🎉 Woohoo! You created your first hash.
Hashing enables us to efficiently compare whether data is changed. Many structures in the blockchain will be built using hashing.
Now, ask yourself: 🤔 Given a hash, could a computer find out what the input is?
It’s impossible to do so. A computer would be going through 2²⁵⁶ different inputs to find the matching hash, which is a lot of calculations and there is no such computational power in the world.
Next, let’s explore what a block is.
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