Blockchain technology operates as a decentralized and distributed ledger, ensuring secure and tamper-resistant record-keeping across a peer-to-peer network. Each participant in the network possesses a copy of the entire blockchain, eliminating the need for intermediaries and fostering trust in transactions.

The immutability of blockchain is a defining feature, making it highly resistant to unauthorized alterations. Once information is added to the blockchain, it becomes practically impossible to modify or delete, reinforcing the integrity of the data. Initially popularized by cryptocurrencies like Bitcoin, blockchain's applications extend beyond finance, finding utility in industries such as supply chain, healthcare, and more.

By providing a verifiable and decentralized record of transactions or information, blockchain is reshaping how various sectors manage data. Its potential to enhance efficiency, reduce fraud, and increase transparency positions it as a transformative technology with far-reaching implications across diverse fields.