# Atom Humanoid (in development) revision history

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

Model: [Atom Humanoid (in development)](/models/atom-humanoid.md)

_No events on file. Arc G is forward-only; the recorded event log accrues from Arc G adoption (2026-06-04) and records material changes as they flow through the updateEntityField chokepoint. For the current state of this model, see the model page._

## 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/atom-humanoid/history. REST: /v1/models/836813f1-b76d-461c-8e0a-4583ac6bed40/history. HTML: [/models/atom-humanoid/history](/models/atom-humanoid/history)._