A transaction ledger is an ordered, append-only record of value transfers or state changes that serves as the authoritative history of activity within a financial or blockchain system. Each entry captures the parties, amounts, and timing of a transaction, and in distributed settings the ledger is cryptographically chained and replicated to guarantee integrity and auditability.
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- In distributed ledgers, entries are grouped into blocks, hash-chained, and replicated across nodes so that tampering with any record invalidates subsequent ones. This structure provides verifiable provenance, supports reconciliation and audit, and underpins regulatory reporting and tax-compliance workflows.