# Perseverance Rover revision history

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

Model: [Perseverance Rover](/models/perseverance-rover.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.science.org/doi/10.1126/scirobotics.adi3099) (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.

_Canonical URL: /models/perseverance-rover/history. REST: /v1/models/a6ddde8f-d1dc-496d-9168-ab4c6c80ef98/history. HTML: [/models/perseverance-rover/history](/models/perseverance-rover/history)._