Permanent claim record · Steam Railroading Institute

Michigan

Verified\u00b7 2026-07-17

Raw value (vault-stripped)

{"as_of":"2026-07-17","relation":"located_in","provenance":{"batch_id":"dr101-a3-venue-parenting-2026-07-17-v1","checked_at":"2026-07-17","volatility":"low","evidence_tier":"operator_attestation","idempotency_key":"dr101-a3-venue-parenting-2026-07-17-v1:place.located_in:steam-railroading-institute:michigan-usa"}}

Predicate	place.located_in
Subject	Steam Railroading Institute (venue)
As of	2026-07-17
Status	Verified
Source	Stroom Labs Operator Attestation — Geographic Containment (DR-101/A3 venue parenting) (trust 9/10)
Reference	—
Document hash	pending evidence-pack link
Provenance chain	operator_attestation
Claim ID	a13de259-ea9d-44bd-8d83-32e58a9b9ca5