Data model

    Ambient work-history context lineage

    A before-and-after entity model for legacy Chronicle frames/OCR/mosaics and current Computer History interaction events/Accessibility context, including summaries, archives, coverage gaps, redaction decisions, and public derivatives.

    Data model diagram

    Relationships

    A readable index of the 20 connections shown in the visual model above.

    1

    Permission grant and observation rules

    Connects to Capture system

    2

    Capture system

    Legacy Chronicle: Screen-derived frame

    3

    Screen-derived frame

    Connects to OCR and contextual inference

    4

    OCR and contextual inference

    Connects to Private visual mosaic and frame inspector

    5

    Capture system

    Computer History: Interaction and Accessibility event

    6

    Interaction and Accessibility event

    Connects to events.jsonl plus metadata.json

    7

    OCR and contextual inference

    Connects to Time-window summary

    8

    events.jsonl plus metadata.json

    Connects to Time-window summary

    9

    Time-window summary

    Connects to Chronicle or Skysight memory file

    10

    Screen-derived frame

    Connects to Private archive bundle

    11

    events.jsonl plus metadata.json

    Connects to Private archive bundle

    12

    Chronicle or Skysight memory file

    Connects to Private archive bundle

    13

    Private archive bundle

    Connects to Exact date coverage?

    14

    Exact date coverage?

    No: Unresolved evidence gap

    15

    Exact date coverage?

    Yes: Privacy and provenance review

    16

    Private visual mosaic and frame inspector

    Connects to Privacy and provenance review

    17

    Privacy and provenance review

    Connects to Reviewed public derivative

    18

    Reviewed public derivative

    Connects to Report input bundle

    19

    Report input bundle

    Connects to Public report

    20

    Privacy and provenance review

    Connects to Public note, workflow, or data model

    Model details

    Dates

    Created
    Not recorded
    Last updated
    Aug 19, 2026

    Entities

    Capture systemPermission grantObservation ruleScreen frameThumbnailOCR sidecarInteraction eventAccessibility contextEvent segmentSummary windowMemory fileArchive bundleCoverage recordRedaction decisionVisual mosaicPublic derivativeReport input bundlePublic reportProvenance run

    Source

    DOCS/intake/runs/data-models/2026-08-19-ambient-work-history-context-lineage/artifact.json

    Open source

    Ambient work-history context lineage

    Purpose

    Before and after

    LayerLegacy ChronicleCurrent Computer History / Skysight
    User-facing sourceChronicle research previewComputer History
    Permission emphasismacOS Screen RecordingAccessibility plus observation controls
    Primary evidenceSampled screen-derived framesStructured interaction and Accessibility events
    Text extractionOCR and contextual inferenceAccessible text, focused elements, typed/selected text, URLs, AX tree/diffs
    Rolling artifactsFrame files, thumbnails, OCR sidecars, latest-frame stateSegment directories with events.jsonl and metadata.json
    Durable written contextChronicle/Codex Markdown summariesSkysight short-window and longer-window Markdown memories
    Visual derivativeDense mosaic/contact sheet and selected-frame inspectorNo passive visual mosaic from Computer History itself
    Audio/videoNo microphone audio; frame sequence was not a conventional movieNo passive audio, video, or screenshot output in the current Computer History contract
    Separate adjacent systemsExplicit screenshot toolsAppshots, Computer Use screenshots, Record & Replay, and ChatGPT Record remain distinct

    Completeness rule

    A report input bundle may reference either legacy or current evidence, but it must declare the exact source family and date coverage. An archive receipt proves storage health; it does not prove that a missing day contains source evidence.

    Public derivative rule

    Dataset Preview

    • Raw CSV row/table content is available in the source artifact.