# Helix (and Helix-02) revision history

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

Brain: [Helix (and Helix-02)](/brains/helix.md)

## Recorded posture

- First recorded event: 2026-05-28
- Last material change: 2026-05-28
- Last editorial change: 2026-06-05
- Material event count: 1
- Editorial event count: 1

## Material events (1)

- **2026-05-28**: created (source: baseline:arc-g)

## Editorial events (1)

- **2026-06-05**: field_updated on `developer_sources`

## 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: /brains/helix/history. REST: /v1/brains/9fc8ad4b-3d2f-4a3e-a0fe-f7ea7e138eb2/history. HTML: [/brains/helix/history](/brains/helix/history)._