A single distributed ledger of transactions. Ledger is a database that is distributed across multiple network nodes or computing devices. Each node receives data from other nodes and maintains a complete copy of the ledger. The nodes are updated independently of each other.
Ledger is a mechanism which provides calculating and storage of balances and other changes caused by accepted transactions. For example, it marks spent transaction outputs and stores calculated Token ticker.
At this moment ledger contains three datum types, related to financial aspects:
Ledger stores indexes of these datums and additional information which can be viewed through command - Node Command - LEDGER INFO