PrototypeOpen Learning Feed is a concept in development. The sample API and validator work, but no school publishes a feed yet, and examples use a fictional school.
Open Learning Feed

olf:verifiedDate

OLF extensionProperty

Date the school last confirmed the value. Values unconfirmed for over a year are flagged.

Defined by
The OLF extension. How olf relates to schema.org
Used on
olf:ValueProvenance
Expects
Date

In the example feed

dataFeedElement[0].item.offers.priceSpecification[0].olf:provenance.olf:verifiedDateFull feed
{
  "olf:verifiedDate": "2026-10-01"
}

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