What is Blockchain?

Blockchain is a decentralized and distributed ledger technology that enables secure, transparent, and tamper-proof record-keeping. It consists of a chain of blocks, each containing transactional data, cryptographically linked to ensure integrity. Blockchain is widely used in cryptocurrencies (e.g., Bitcoin, Ethereum), supply chain management, smart contracts, and digital identity verification. Its decentralized nature enhances security and reduces reliance on intermediaries.