Last updated: 2026-07-05
Wikidata Explorer confirmed production consumption of MetaMuseum's Met-scoped
IIIF Change Discovery feed as the distinct external consumer
`wikidataexplorer-metamuseum-prod`.
Feed-Read Evidence
Partner-reported read:
`sha256:4cce5c5eb4a6001d8baf4156763ba141a3ef1574b378a95d42ed60f8478dd88b`
- Consumer ID: `wikidataexplorer-metamuseum-prod`
- Provider scope: `provider=met`
- Harvest mode: IIIF Change Discovery walk-back
- Result: `PASS`
- Coverage: `53/53` `Create` activities across three pages
- Event types observed: `Create=53`, `Update=0`, `Delete=0`
- Reconciliation: `47/53` records carry Wikidata QID hooks
- Partner proof digest:
The partner specifically verified a Met object activity for object `544864`,
"Statuette of a hippo goddess, probably Taweret", through equivalent QID
`Q29385853` into Wikidata Explorer's own evidence workflow.
This is filed as MetaMuseum's third real external ActivityStreams feed-read
consumer. It satisfies the declared external-consumer count in the local
syndication evidence artifact, while strict ActivityStreams adoption remains
blocked until `Update` and `Delete` activity reads are observed and durable
callback verification is accepted.
Callback Evidence
Wikidata Explorer provided a public callback endpoint:
- Callback URL: `https://www.wikidataexplorer.com/api/activity/callback`
- Accepted event types: `Create`, `Update`, `Delete`
- Auth scheme: `Authorization: Bearer <shared-token>`
- Token fingerprint confirmed locally: `sha256[:12] = cf62761a9855`
MetaMuseum verified the callback on `2026-07-05T07:49:10.500Z` using a real Met
backfill `Create` activity for object `544864`. The callback returned:
- POST: `202`
- Follow-up GET: `200`
- Observed ledger: `Create=1`, `Update=0`, `Delete=0`
- Reconciled QID: `Q29385853`
This counts as accepted durable callback evidence for
`wikidataexplorer-metamuseum-prod`. `Update` and `Delete` remain uncounted until
genuine MetaMuseum activities of those types are emitted and observed.
Local evidence:
`artifacts/activity-syndication/wikidataexplorer-metamuseum-prod-callback-2026-07-05.json`
`artifacts/activity-syndication/activity-syndication-evidence-latest.json`
`storage/activity-subscriptions.json`
`storage/activity-consumers.json`
- Failed callback proof:
- Latest syndication packet:
- Subscription ledger:
- Consumer ledger: