# Pratt Miller x General Motors Motorsports Engineering revision history

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

Partnership: [Pratt Miller x General Motors Motorsports Engineering](/partnerships/pratt-miller-x-general-motors-motorsports-engineering.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/pratt-miller-x-general-motors-motorsports-engineering/history. REST: /v1/partnerships/b41f67d3-ae69-44c3-99dd-06429d7b6f5d/history. HTML: [/partnerships/pratt-miller-x-general-motors-motorsports-engineering/history](/partnerships/pratt-miller-x-general-motors-motorsports-engineering/history)._