Block Header

In a sentence

The miner hashed the block header while searching for a valid proof of work.

• The miner hashed the block header while searching for a valid proof of work.
• A block header summarizes key information about the block and its relationship to the chain.
• The previous block’s hash appears in the new block header.
• Lightweight clients can use block headers to verify parts of the chain without downloading every transaction.
• Changing transaction data would alter the values represented in the block header.