Blockchain is a distributed ledger technology that encrypts data end-to-end and restricts access to authorized participants. Blockchain can improve security and privacy in various domains where trust is essential for efficient and secure operations. For example, in finance, smart contracts can enable peer-to-peer lending, insurance claims, derivatives trading, and asset tokenization, among others. Smart contracts can reduce transaction costs, risks, and delays associated with intermediaries and manual processes. They can also increase transparency and compliance by providing a clear record of transactions and obligations.