Blockchain technology is a decentralized digital ledger that records transactions across a network of computers, ensuring security, transparency, and immutability[1][2]. Unlike traditional centralized databases, blockchain operates on a peer-to-peer network where each transaction is grouped into a block, and these blocks are cryptographically linked in a chain, making it nearly impossible to alter past records without detection[1][2][4]. Key features of blockchain include: - **Decentralization**: Control is distributed among network participants rather than a single authority, reducing the need for trust and enhancing transparency[3]. - **Immutability**: Once recorded, transactions cannot be changed or deleted; errors are corrected by adding new transactions, preserving a clear audit trail[3]. - **Consensus mechanisms**: Transactions are validated only when a majority of participants agree, ensuring data integrity and preventing fraud[3][4]. Blockchain's applications have expande...