Evidence Output Spec (IS-EOS v0.1)
This document defines the Evidence Output Specification (IS-EOS v0.1).
It specifies the minimum structural requirements for an evidence output used to support attribution and finality at a dispute node.
The specification is informative, not normative.
Purpose
Section titled “Purpose”The purpose of this specification is to define what constitutes a complete and reviewable evidence output.
An evidence output conforming to IS-EOS v0.1 is intended to:
- support attribution at a dispute node,
- preserve integrity across handoffs,
- prevent silent alteration or selective presentation.
This specification does not define how evidence is collected or analyzed.
IS-EOS v0.1 applies to evidence outputs used in:
- acceptance or handoff disputes,
- transitions of custody or responsibility,
- processes where finality depends on documented conditions.
It applies across physical, digital, and procedural contexts.
Conformance
Section titled “Conformance”An evidence output conforms to IS-EOS v0.1 when it includes, at minimum:
- a summary,
- an attachment index,
- an integrity statement,
- a version record.
All components must be present and internally consistent.
Required Components
Section titled “Required Components”Summary
Section titled “Summary”The summary provides a concise description of:
- the dispute node,
- the event or condition being documented,
- the scope of the evidence output.
The summary does not contain conclusions or judgments.
Attachment Index
Section titled “Attachment Index”The attachment index lists all included materials using immutable identifiers.
Each entry specifies:
- identifier,
- description,
- creation or capture context.
The index establishes ordering and completeness.
Integrity Statement
Section titled “Integrity Statement”The integrity statement describes how evidence integrity is preserved.
It includes:
- handling conditions,
- sealing or protection measures,
- verification or timestamping practices, if applicable.
The statement explains why the evidence should be considered untampered within the process.
Version Record
Section titled “Version Record”The version record documents:
- creation time,
- release state,
- any subsequent revisions.
The version record prevents silent modification and establishes temporal order.
Assembly Principles
Section titled “Assembly Principles”Evidence outputs are assembled according to the following principles:
- completeness over selectivity,
- ordering over aggregation,
- transparency over optimization.
Evidence is evaluated as a structured output, not as isolated artifacts.
What This Spec Does Not Do
Section titled “What This Spec Does Not Do”IS-EOS v0.1 does not:
- prescribe tools, sensors, or detection methods,
- determine legal or evidentiary admissibility,
- assign fault or liability,
- guarantee correctness or truth.
It defines structure, not outcome.
Relation to Irreversible States
Section titled “Relation to Irreversible States”Evidence outputs conforming to IS-EOS v0.1 support evaluation of irreversible states at dispute nodes.
They provide the structural basis upon which finality may be assessed within a process.