Discovery

Evidentiary Defense and Retention — Specification v2.0.3

Purpose

This page describes the system's designed role in supporting legal and regulatory proceedings through structured record retention, chain-of-custody maintenance, and export capabilities. Unlike Security, which addresses protection of data at rest and in transit, this page pertains to the admissibility and retrievability of records for external parties including courts, regulators, and auditors.

Evidentiary Design Principles

  • Append-Only Record Architecture. Governance events are stored in an append-only structure. Records cannot be modified or deleted after creation. This architecture is designed to support claims of record completeness in legal proceedings — the absence of a deletion mechanism is itself an evidentiary safeguard.
  • Provenance Attribution. Every record includes the identity of the actor, the timestamp of the action, the engagement context, and the operation type. Provenance data is captured at the time of the event and cannot be retroactively modified.
  • Hash-Based Integrity Verification. Sealed artifacts include cryptographic hashes that permit independent verification of record integrity. Verification does not require system access — hash comparison can be performed by any party with possession of the artifact and the published hash.

Chain of Custody

Materials submitted to the system are tracked through a continuous chain of custody. Each material is identified by its cryptographic hash at the point of submission. Subsequent operations on the material — inclusion in a run, compilation into a record, sealing — are individually recorded as governance events linked to the original submission.

The chain of custody is designed to answer the question: who submitted what, when, under what authority, and what happened to it thereafter. This chain is reconstructible from the governance event log without reliance on any single summary or report.

Export Capabilities

  • Frozen Record Export. Sealed engagement records can be exported as self-contained artifacts that include the record data, manifest, cryptographic hashes, and attestation metadata. Exported records are designed to be independently verifiable without system access.
  • Governance Event Export. The complete governance event history for an engagement can be exported in structured format for external review, regulatory submission, or litigation support.
  • Closure Certificates. Upon engagement completion, the system produces closure certificates that attest to the procedural history of the engagement — what procedures were followed, what constraints were enforced, and what the terminal state of the record contains.

Litigation Support

The system is designed to support — but does not itself conduct — responses to subpoenas, regulatory inquiries, and discovery requests. Specific data preservation procedures, legal hold implementations, and subpoena response workflows are defined in the applicable engagement agreement.

The system architecture supports targeted data retrieval by engagement, time range, actor, operation type, and material hash. This query capability is designed to facilitate proportionate discovery responses without requiring full-system data exports.

Limit

The system produces procedural records, not legal conclusions. Evidentiary admissibility is a determination made by courts and regulators, not by the system. The design of the system's record architecture is intended to support admissibility arguments but does not guarantee them. The evidentiary weight of any system output is a question of law, not of system specification.

Specification Version 2.0.3 — Effective Date: February 2026