A blockchain ledger refers to a decentralized and tamper-proof digital record of transactions maintained across multiple nodes in a network. In financial transactions, this ledger enables secure, transparent, and efficient record-keeping without the need for intermediaries. Every transaction is recorded in chronological order, ensuring verifiability and traceability. This technology enhances the reliability of transactions, reduces fraud risk, and can streamline processes like cross-border payments. Blockchain facilitates trust among parties by providing a shared, immutable ledger that can be audited readily.