A block header in a blockchain typically contains the following details:
Version number: Specifies the version of the software used to create the block.
Previous block hash: A reference to the hash of the previous block in the chain, linking the blocks together.
Merkle root: A hash of all the transactions in the block, serving as a compact representation of all the transaction data in the block.
Timestamp: The time the block was created, used to help prevent double-spending and to order transactions chronologically.
Difficulty target: Specifies the target for the proof-of-work calculation, which determines the rate at which new blocks are added to the chain.
Nonce: A random number used as an input in the proof-of-work calculation, which allows miners to perform the necessary
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