Blockchain
Blockchain is a decentralized digital ledger that records transactions across multiple computers, ensuring that the data is transparent, secure, and tamper-proof. Each entry, known as a block, is linked to the previous one, forming a continuous chain of records. This structure eliminates the need for a central authority and enhances trust in digital transactions. While it's best known for powering cryptocurrencies like Bitcoin, blockchain technology is also used in industries such as supply chain management, healthcare, and voting systems. Its ability to provide immutable and verifiable data makes it a revolutionary tool in the digital age.