Block Headers

Block

In cryptocurrency and decentralized ledger technology, a block represents a batch of transactions grouped together and cryptographically linked to the preceding block, forming a chain. This structure ensures data integrity and immutability, as any alteration to a block necessitates recalculation of subsequent hashes. The block’s header contains metadata crucial for network consensus, including the timestamp, previous block’s hash, Merkle root, and difficulty target. Understanding block structure is fundamental to comprehending the operational mechanics of blockchain systems and their inherent security properties.