# China Rare Earth Controls x Tesla Optimus (Neodymium Magnet Supply Disruption) revision history

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

Partnership: [China Rare Earth Controls x Tesla Optimus (Neodymium Magnet Supply Disruption)](/partnerships/china-rare-earth-controls-x-tesla-optimus-neodymium-magnet-supply-disruption.md)

## Recorded posture

- First recorded event: 2025-04-01
- Last material change: 2025-04-01
- 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.

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