Every event,written once.
Treviya writes every financial event, authorisations, procurement commitments, freight, duties, commissions, platform fees, exceptions, to an append-only ledger. Entries never change.
The ledger is organised per cycle. Every event carries the cycle ID, an event type, a monotonically increasing sequence number, a timestamp and the signed evidence hash. Events cannot be edited. Corrections take the form of additional entries that reference the original.
At cycle close, the statement is materialised from the ledger, the cycle's events are reduced into the itemised breakdown that members see. Because the source is append-only, every number on the statement is traceable to a specific event with a specific timestamp.
Reconciliation
Every night the reconciliation job compares ledger sums against stored balances per cycle and per member. Any divergence is flagged to the platform team within two hours. Divergences are investigated and, if confirmed, corrected through additional ledger entries, never by editing history.
Export
Members can export their ledger entries in CSV, JSON or signed PDF format. The signed PDF includes a document hash that can be verified against the platform's published signing key.
Every number,traceable to source.
That is the promise underneath every cycle statement. Read a live brief and you will see the itemisation that flows from the ledger.