Expert outlines technical requirements for a verifiable data audit workbench

A data audit workbench is defined as a repeatable pipeline that transforms control events into immutable, verifiable records for regulatory inspection. It must mechanically write events to append-only, write-once-read-many (WORM) storage with enforced retention periods to meet compliance standards. Key design considerations include using cryptographic hash chains to prove event integrity and making practical choices between global and sharded chains for performance. The system must also reconcile immutable logs with data erasure requests using patterns like salted hashes and maintain backward-compatible schemas for long-term parseability.