# Handle revision history

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

Model: [Handle](/models/boston-dynamics-handle.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/boston-dynamics-handle/history. REST: /v1/models/0925a06d-cf18-42de-985b-ee1eae85f52c/history. HTML: [/models/boston-dynamics-handle/history](/models/boston-dynamics-handle/history)._