# Green Harmonic x Tesla (Optimus Harmonic Drive Reducers) revision history

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

Partnership: [Green Harmonic x Tesla (Optimus Harmonic Drive Reducers)](/partnerships/green-harmonic-x-tesla-optimus-harmonic-drive-reducers.md)

## Recorded posture

- First recorded event: 2026-01-15
- Last material change: 2026-01-15
- 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/green-harmonic-x-tesla-optimus-harmonic-drive-reducers/history. REST: /v1/partnerships/7003556a-a41d-4905-88d8-5c4ccb3e672a/history. HTML: [/partnerships/green-harmonic-x-tesla-optimus-harmonic-drive-reducers/history](/partnerships/green-harmonic-x-tesla-optimus-harmonic-drive-reducers/history)._