Intro to solidity

The block header includes several pieces of data:

• Previous Block Hash: The hash of the previous block in the chain.


• Merkle Root: A hash representing all the transactions in the block.


• Timestamp: The current time when the block is mined.


• Difficulty Target: A value that determines the difficulty of the cryptographic puzzle.


• Nonce: A variable number that miners change to find a valid hash.

Nonce - number only used once

This is a number used for setting the difficulty of …

block cryptographic current data hash header intro merkle nonce puzzle root solidity target transactions value variable