The field mapper: source columns mapped to examiner target fields, validated live, transformed on your machine.
Legacy bank CSVs in. Examiner-ready data out. Every step on the record.
DataShift is an air-gapped desktop application for Windows and Linux that transforms legacy bank core CSV exports into examiner-ready output. Every action is recorded to an append-only, SHA-256 hash-chained audit log an examiner can verify end to end with standard tools. Deterministic and rule-based — no cloud, no network code, no AI.
The field mapper: source columns mapped to examiner target fields, validated live, transformed on your machine.
Map any source column to examiner target fields with versioned, plain-JSON schemas. Eleven factory defaults ship, covering CSI, FIS-Bankway, IBT-AccuSystem, and Federal Reserve ACH extracts.
Every row read, row written, transform, error, and job run is logged to an append-only SQLite database with SHA-256 hash chaining — any alteration breaks the chain and is detectable.
No socket code, no HTTP client, no telemetry, no update check compiled in. Zero outbound connections. Bank data never leaves the host.
Identical input, schema, and version always produce bit-identical output — examiners can re-run any historical job and reproduce it exactly.
Configurable field rules — regex, not-blank, severity levels — plus two-file reconciliation with exact and fuzzy matching to flag or remove discrepancies.
Every release binary is GPG-signed against a published fingerprint, and watch/batch scheduling automates recurring exports via Task Scheduler, cron, or systemd.
The bank keeps full custody. Cobblestone Digital cannot access your data even if asked — there is no channel.
The audit log is open, unencrypted SQLite that any examiner can open and verify independently — no proprietary viewer, no opaque report.
No machine learning and no non-determinism means any historical job can be reproduced exactly — a promise most data tools cannot make.
Digitize legacy core data for examination without shipping it to anyone's cloud.
Demonstrable data lineage, mapped to the frameworks your examiners speak.
One binary, GUI and CLI, installs and runs on the hardware you already control.
Request a demo and watch your own core extract become examiner-ready — on one machine, on the record.
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