# NASA Jet Propulsion Laboratory revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Company: [NASA Jet Propulsion Laboratory](/companies/nasa-jpl.md)

## Recorded posture

- First recorded event: 2026-06-01
- Last material change: 2026-06-01
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2026-06-01**: created (source: https://www.jpl.nasa.gov/) (verified)

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date. To restate a recorded change, write a new event through the updateEntityField chokepoint.

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