Revision history

Helios revision history

Append-only Arc G field-change log. 1 material event; 0 editorial events. Newest first.

Model

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Recorded posture

First recorded event: 2026-06-07
Last material change: 2026-06-07

Material events (1)

2026-06-07: created (source: [{"url":"https://www.ses.com/press-release/ses-signs-multi-launch-agreement-helios-transport-services-impulse-space","title":"SES Signs Multi-Launch Agreement for Helios Transport Services with Impulse Space","sourceName":"SES (primary)"}]) (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. To restate a recorded change, write a new event through the updateEntityField chokepoint.

Machine-readable: /models/helios/history.md + REST /v1/models/29eaa53c-0c80-4c11-bc35-5adf73c33116/history.