# NiSource revision history

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

Company: [NiSource](/companies/nisource.md)

## Recorded posture

- First recorded event: 2026-10-16
- Last editorial change: 2026-10-28
- Material event count: 0
- Editorial event count: 3

## Editorial events (2)

- **2026-10-28**: field_updated on `sources` (source: db-trigger)
- **2026-10-28**: field_updated on `keyFacts` (source: db-trigger)

## 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. To restate a recorded change, write a new event through the updateEntityField chokepoint.

_Canonical URL: /companies/nisource/history. REST: /v1/companies/a39db391-f56f-4a6a-93a4-f9777c6dc42d/history. HTML: [/companies/nisource/history](/companies/nisource/history)._