# Thymio x ECAL (Design Collaboration) revision history

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

Partnership: [Thymio x ECAL (Design Collaboration)](/partnerships/thymio-x-ecal-design-collaboration.md)

## Recorded posture

- First recorded event: 2026-07-31
- Last material change: 2026-07-31
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2026-07-31**: created (source: https://en.wikipedia.org/wiki/Thymio) (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.

_Canonical URL: /partnerships/thymio-x-ecal-design-collaboration/history. REST: /v1/partnerships/abb4257e-7224-4194-9ce3-aad48e7b67a6/history. HTML: [/partnerships/thymio-x-ecal-design-collaboration/history](/partnerships/thymio-x-ecal-design-collaboration/history)._