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Block

Block

Last Updated: January 23, 2026

Block is a data unit in blockchain, storing transaction records and linking to previous blocks, forming a chain.

Block is a fundamental unit in blockchain technology. It contains a collection of transaction data and a unique identifier called a hash. Each block is linked to the previous one through its hash, creating a secure and tamper-proof chain of records. When a block is filled with transactions, it is verified by network participants and added to the blockchain. This process ensures transparency and security. Blocks also include a timestamp and sometimes a nonce, supporting consensus algorithms. Overall, blocks are crucial for maintaining the integrity and functionality of decentralized networks like cryptocurrencies.