A Ledger Protocol is a set of rules and standards that govern how transactions and data are recorded on a blockchain. It ensures that every transaction is verified and securely added to a public ledger, thus maintaining an accurate and immutable record.Each participant in the network has a copy of the ledger, which helps achieve consensus about the current state of transactions. This decentralized approach not only enhances security but also reduces the risk of fraud or manipulation.Different blockchain systems can have their own specific ledger protocols, which may include various consensus mechanisms, transaction validation processes, and methods for updating the ledger. Examples include proof of work and proof of stake.Overall, ledger protocols provide the foundational structure that enables transparency and trust in digital currencies, making it possible for users to interact without relying on intermediaries.