Chain of Custody Flow - Evidence and Proof as Data Step by Step

Chain of custody can be modeled as a sequence of event records. Honesty note: simplified evidence and proof model; jurisdictions and rules vary; the pinned first step states the as-of date; not legal advice.

highlighted = computed this step

Evidence model honesty note

Honesty note: simplified evidence and proof model; jurisdictions and rules vary; as of June 24, 2026; not legal advice; code encodes a stated structural model, not the law itself.

\text{evidence model as of }June 24, 2026

Custody is modeled as events

The stated process treats custody as an ordered event chain: item logged, collection, seal, transfer, storage, and human review.

\text{event chain before review}

Example custody data

The toy file records a collected item, a seal event, a transfer event, and a storage event before review.

\text{collect to seal to transfer to storage}

The flow recomputes structure

The procedure flow recomputes 6 nodes and 5 edges from the authored event graph.

\text{nodes}=6,\quad \text{edges}=5

Diagram note

The diagram shows custody event order. It does not decide reliability, completeness, or an evidence ruling.

\text{event order only}

Jurisdiction: US; as of 2026-06-24; not legal advice; Code encodes the stated structural model, not the law itself.

Summary

A custody map helps reviewers see the event path and the handoff point without turning the path into a legal conclusion.

\text{path plus handoff}