---
title: "Build a chain-of-custody log from the capture papers"
url: "https://ailawframework.com/obligations/incoming-evidence-deepfakes-and-synthetic-documents/build-a-chain-of-custody-log-from-the-capture-papers"
type: "task"
site: "AI Law Framework"
id: "A44-A20260923-3"
practice_area: "Incoming evidence — deepfakes & synthetic documents"
tier: "yellow"
lawyer_review: "required"
last_reviewed: "2026-10-22"
---

# Build a chain-of-custody log from the capture papers

> From the capture notes, list who held the device or file, when, and what hashes or export logs exist, marking gaps.

Canonical page: https://ailawframework.com/obligations/incoming-evidence-deepfakes-and-synthetic-documents/build-a-chain-of-custody-log-from-the-capture-papers  
Last reviewed: 2026-10-22

Site index for agents: https://ailawframework.com/llms.txt

## Key facts

| Fact | Value |
| --- | --- |
| Practice area | [Incoming evidence — deepfakes & synthetic documents](https://ailawframework.com/obligations/incoming-evidence-deepfakes-and-synthetic-documents.md) |
| Human involvement | Yellow: Lawyer and AI draft together |
| How AI is used | From the capture notes, list who held the device or file, when, and what hashes or export logs exist, marking gaps. |
| What the lawyer must review | Do not let the log invent a custodian Treat a broken chain as going to weight |
| Written for / versions | 1 jurisdiction versions below |

## Checking plan

A broken chain is a weight problem. Do not let the log invent a custodian.

- What the AI does: From the capture notes, list who held the device or file, when, and what hashes or export logs exist, marking gaps.
- What the lawyer does: Set the scope, verify the evidence, resolve exceptions and approve the final output for its intended use.
- Basis: Suggested checking approach based on the task guidance. Complete the assessment for the actual tool, information and jurisdiction.

## Checks the lawyer makes

1. Confirm the output against the client’s instructions and the complete relevant source material, including omissions or contradictions.
2. Verify every relied-on citation, figure and name against the source document.
3. The responsible lawyer approves the exact version before use.

## Sources

- [Ten Things: 100 Practical Generative AI Prompts for In-House Lawyers, 31 March 2025](https://tenthings.blog/2025/03/31/ten-things-practical-generative-ai-prompts-for-in-house-lawyers/) (checked 2026-09-23)

## Forms and precedents for this task

| Form or precedent | Kind | AI level | Summary |
| --- | --- | --- | --- |
| [NSW gate before compelled or suppressed material enters a generative AI program](https://ailawframework.com/precedents/incoming-evidence-deepfakes-and-synthetic-documents/nsw-genai-gate-compelled-material.md) | Checklist | Yellow | A gate, under Supreme Court Practice Note SC Gen 23 paragraph 9A, before subpoenaed, suppressed, or compulsion material is entered into any generative AI program, including a closed one. |
| [Letter asking that devices and native files be preserved](https://ailawframework.com/precedents/incoming-evidence-deepfakes-and-synthetic-documents/device-preservation-letter.md) | Letter | Red | Letter asking a party or a non-party to keep devices, accounts and native files so that an authenticity question can still be investigated, without claiming that the letter is a court order. |

Signed-in accounts can read the full text of each one.

## Jurisdiction versions

| Jurisdiction | Level |
| --- | --- |
| [United States](https://ailawframework.com/obligations/incoming-evidence-deepfakes-and-synthetic-documents/build-a-chain-of-custody-log-from-the-capture-papers/united-states.md) | Yellow |

*Practice guidance for planning and review. Confirm current primary sources and the requirements of the actual matter. This is general information, not legal advice.*