# NACHI Robotics x Butler Bros revision history

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

Partnership: [NACHI Robotics x Butler Bros](/partnerships/nachi-robotics-x-butler-bros.md)

## Recorded posture

- First recorded event: 2026-08-22
- Last material change: 2026-08-22
- Material event count: 1
- Editorial event count: 0

## 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.

_Canonical URL: /partnerships/nachi-robotics-x-butler-bros/history. REST: /v1/partnerships/86e6ed1c-2de7-4d83-9437-2dc15b41ee8a/history. HTML: [/partnerships/nachi-robotics-x-butler-bros/history](/partnerships/nachi-robotics-x-butler-bros/history)._