# `Logistiki.Ledger.Beancount`
[🔗](https://github.com/thanos/logistiki/blob/v0.1.0/lib/logistiki/ledger/beancount.ex#L1)

The Beancount ledger backend — the accounting oracle.

Uses `beancount_ex` as the executable accounting specification. On
`execute_journal/2` the journal is mapped to Beancount directives and verified
with `Beancount.check/1` before being persisted. Projections (`balance`,
`statement`, `trial_balance`) are computed from Logistiki's own persisted
postings via `Logistiki.Projections.ProjectionEngine`, so the simulation and
Beancount backends agree by construction. The oracle value of Beancount is
exercised by `verify_ledger/1` and the regression test suite, which compare
Beancount-derived balances against Logistiki's.

Beancount-specific structs do not leak into the public API.

# `oracle_balances`
*since 0.1.0* 

Returns Beancount balances for all posted journals (oracle projection).

# `verify_ledger`
*since 0.1.0* 

Renders all posted journals to a Beancount ledger and verifies it with
`Beancount.check/1`. Used by the regression suite to exercise the oracle.

---

*Consult [api-reference.md](api-reference.md) for complete listing*