# Amazon acquires Rivr stair-climbing delivery robot revision history

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

Partnership: [Amazon acquires Rivr stair-climbing delivery robot](/partnerships/amazon-acquires-rivr-stair-climbing-delivery-robot.md)

## Recorded posture

- First recorded event: 2026-03-19
- Last material change: 2026-03-19
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2026-03-19**: created (source: https://techcrunch.com/2026/03/19/amazon-acquires-rivr-maker-of-a-stair-climbing-delivery-robot/) (verified)

## 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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