---
tool_id: WACK-TOOL-0051
concept_id: WACK-CONCEPT-0012
playbook_content_id: WACK-CONTENT-0131
status: draft
technical_review: pending
artifact_type: working_worksheet
---

# Evidence Hygiene Intake and Custody Register

> Turn an uploaded file into a bounded, traceable, safely handled evidence object without pretending that metadata alone makes it sufficient.

**Expected output:** A stable evidence record containing source and collector identity, six distinct clocks, population boundaries, original and derivative relationships, integrity markers, sensitivity and access treatment, claim and test links, review limits, supersession, retention, disposal, and reopening triggers.  
**Working time:** 75 minutes  
**Derived from:** WACK-CONTENT-0131

## Working context

Organization / environment: __________________________________________  
Facilitator / owner: __________________________________________________  
Participants: _________________________________________________________  
Date: ____________________  Review trigger or next date: ______________

## 01 / Find — Freeze the object before context disappears

Select one frequently reused artifact and preserve its native source, first defensible capture, stored copies, derivatives, linked claims, access boundary, and current disposition.

- [ ] **What stable ID, source system, tenant or environment, native object or report ID, collector, method, query, and filter describe the capture?**

  Notes: ________________________________________________

- [ ] **Which source, observation, collection, upload, review, and assessment-period clocks apply, and what timezone or clock basis makes them comparable?**

  Notes: ________________________________________________

## 02 / Map — Draw the evidence boundary

Connect the object to its subject, complete population, exclusions, exceptions, parent and child derivatives, custodians, authorized viewers, claim, test, contrary facts, successors, retention basis, and disposal owner.

- [ ] **What did the artifact cover, how was completeness evaluated, and what did it omit?**

  Notes: ________________________________________________

- [ ] **Which copy is the governed original, which are derivatives, and which relationship is inferred rather than recorded?**

  Notes: ________________________________________________

## 03 / Explain — State what every field does—and does not—prove

Describe the observation in bounded language and keep integrity, authenticity, completeness, relevance, and sufficiency as separate propositions.

- [ ] **What does the digest establish from the moment it was calculated, and what source questions remain open?**

  Notes: ________________________________________________

- [ ] **Which precise claim and testing objective may use this object, and which conclusion would overreach its subject, population, period, or method?**

  Notes: ________________________________________________

## 04 / Reduce — Minimize copies and visible ambiguity

Preserve one controlled original, create traceable derivatives, remove unnecessary sensitive content, retire uncontrolled duplicates, replace expiring references, and disable automatic claim promotion from attachment state.

- [ ] **Which content can be excluded or redacted without destroying the evidence boundary?**

  Notes: ________________________________________________

- [ ] **Which duplicate, stale link, unexplained transformation, or indefinite-retention decision can be corrected now?**

  Notes: ________________________________________________

## 05 / Prove — Reperform the lifecycle

Traverse capture, preservation, registration, transformation, claim use, review, supersession, retention, and disposal; keep failures and contrary evidence visible.

- [ ] **Can another qualified reviewer reconstruct the object without interviewing the original collector?**

  Notes: ________________________________________________

- [ ] **Which source change, new occurrence, failed control event, transformation, access event, supersession, or disposal decision must reopen the record or its downstream claims?**

  Notes: ________________________________________________

## Completion check

- [ ] The evidence object and governed original have stable identifiers independent of filenames and folders.
- [ ] Source, subject, population, exclusions, method, collector, environment, and all relevant clocks are explicit.
- [ ] Every crop, redaction, annotation, conversion, extraction, and aggregation identifies its parent, operator, time, reason, and digest.
- [ ] Integrity, authenticity, completeness, relevance, and sufficiency remain separate propositions.
- [ ] Sensitivity, authorized access, approved transfer, retention basis, disposal owner, and adverse history are visible.
- [ ] Claim and test use, limitations, review result, supersession, and reopening triggers can be independently reconstructed.

## Decision and next action

Decision: _____________________________________________________________  
Owner: __________________________  Due date: ___________________________  
Evidence or artifact location: ________________________________________

---

_Working practitioner worksheet pending technical review. It does not determine PCI DSS compliance, replace the standard, or replace instructions from an assessor or compliance-accepting entity. The Cluster of Wack is an independent resource and is not affiliated with or endorsed by PCI SSC._