Vault’s ledger is an append-only series of accepted fund movements (postings).
Fund balances can be recorded in many dimensions, including: Currency Denominations , Funds phase and Asset type.
When a posting is recorded onto the ledger it causes a change in the balances.
All postings (accepted and rejected) are provided as events on the event stream, as well as the new balances that arise after accepted postings.
The ledger is used to provide balances when running the account logic within a Smart Contract