# CALB x BMZ Group Battery Strategic Cooperation revision history

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

Partnership: [CALB x BMZ Group Battery Strategic Cooperation](/partnerships/calb-x-bmz-group-battery-strategic-cooperation.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/calb-x-bmz-group-battery-strategic-cooperation/history. REST: /v1/partnerships/4df1b5f5-e49a-46f8-b529-93480c971a3b/history. HTML: [/partnerships/calb-x-bmz-group-battery-strategic-cooperation/history](/partnerships/calb-x-bmz-group-battery-strategic-cooperation/history)._