# Pilz x ZKW (Human-Robot Collaboration Safety) revision history

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

Partnership: [Pilz x ZKW (Human-Robot Collaboration Safety)](/partnerships/pilz-x-zkw-human-robot-collaboration-safety.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/pilz-x-zkw-human-robot-collaboration-safety/history. REST: /v1/partnerships/39734034-f8e6-4e63-aeb5-cd5eb0a8246d/history. HTML: [/partnerships/pilz-x-zkw-human-robot-collaboration-safety/history](/partnerships/pilz-x-zkw-human-robot-collaboration-safety/history)._