# EH216-S revision history

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

Model: [EH216-S](/models/ehang-216.md)

## Recorded posture

- First recorded event: 2026-06-07
- Last material change: 2026-06-07
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2026-06-07**: created (source: backfill_script) (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/ehang-216/history. REST: /v1/models/f0fd423a-9622-41d5-a2bd-53d25d3ba2ec/history. HTML: [/models/ehang-216/history](/models/ehang-216/history)._