Bitcoin's public ledger (Public ledger) is a publicly accessible ledger of all the Bitcoin network's transactions accumulated since its creation. The ledger is the blockchain itself: a chain of linked blocks, each of which records confirmed transfers. Since the data is stored simultaneously on many nodes around the world, the ledger does not depend on a single center and cannot be altered unnoticed.

The main feature of the public ledger is transparency. Anyone can view the history of operations, check address balances and make sure that funds really exist and have not been spent twice. At the same time, the records do not contain names: addresses are pseudonymous identifiers, so the system combines the publicity of the data with a certain level of privacy for participants.

What the public ledger provides

• transparency of all confirmed transactions;
• protection against double-spending of funds;
• the possibility of independent verification by any participant;
• resilience through distributed data storage.

It is precisely the public ledger that underlies trust in the Bitcoin network: its operation can be verified without intermediaries, relying on mathematics and a distributed storage structure rather than on anyone's promise.