{"id":"linked-art/wikidataexplorer-consumer-evidence","relativePath":"linked-art/wikidataexplorer-consumer-evidence.md","title":"Wikidata Explorer ActivityStreams Consumer Evidence","markdown":"# Wikidata Explorer ActivityStreams Consumer Evidence\n\nLast updated: 2026-07-05\n\nWikidata Explorer confirmed production consumption of MetaMuseum's Met-scoped\nIIIF Change Discovery feed as the distinct external consumer\n`wikidataexplorer-metamuseum-prod`.\n\n## Feed-Read Evidence\n\nPartner-reported read:\n\n- Consumer ID: `wikidataexplorer-metamuseum-prod`\n- Provider scope: `provider=met`\n- Harvest mode: IIIF Change Discovery walk-back\n- Result: `PASS`\n- Coverage: `53/53` `Create` activities across three pages\n- Event types observed: `Create=53`, `Update=0`, `Delete=0`\n- Reconciliation: `47/53` records carry Wikidata QID hooks\n- Partner proof digest:\n `sha256:4cce5c5eb4a6001d8baf4156763ba141a3ef1574b378a95d42ed60f8478dd88b`\n\nThe partner specifically verified a Met object activity for object `544864`,\n\"Statuette of a hippo goddess, probably Taweret\", through equivalent QID\n`Q29385853` into Wikidata Explorer's own evidence workflow.\n\nThis is filed as MetaMuseum's third real external ActivityStreams feed-read\nconsumer. It satisfies the declared external-consumer count in the local\nsyndication evidence artifact, while strict ActivityStreams adoption remains\nblocked until `Update` and `Delete` activity reads are observed and durable\ncallback verification is accepted.\n\n## Callback Evidence\n\nWikidata Explorer provided a public callback endpoint:\n\n- Callback URL: `https://www.wikidataexplorer.com/api/activity/callback`\n- Accepted event types: `Create`, `Update`, `Delete`\n- Auth scheme: `Authorization: Bearer `\n- Token fingerprint confirmed locally: `sha256[:12] = cf62761a9855`\n\nMetaMuseum verified the callback on `2026-07-05T07:49:10.500Z` using a real Met\nbackfill `Create` activity for object `544864`. The callback returned:\n\n- POST: `202`\n- Follow-up GET: `200`\n- Observed ledger: `Create=1`, `Update=0`, `Delete=0`\n- Reconciled QID: `Q29385853`\n\nThis counts as accepted durable callback evidence for\n`wikidataexplorer-metamuseum-prod`. `Update` and `Delete` remain uncounted until\ngenuine MetaMuseum activities of those types are emitted and observed.\n\nLocal evidence:\n\n- Failed callback proof:\n `artifacts/activity-syndication/wikidataexplorer-metamuseum-prod-callback-2026-07-05.json`\n- Latest syndication packet:\n `artifacts/activity-syndication/activity-syndication-evidence-latest.json`\n- Subscription ledger:\n `storage/activity-subscriptions.json`\n- Consumer ledger:\n `storage/activity-consumers.json`\n","sections":[{"level":2,"heading":"Feed-Read Evidence","anchor":"feed-read-evidence"},{"level":2,"heading":"Callback Evidence","anchor":"callback-evidence"}],"html":"

Wikidata Explorer ActivityStreams Consumer Evidence

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Last updated: 2026-07-05

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Wikidata Explorer confirmed production consumption of MetaMuseum's Met-scoped

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IIIF Change Discovery feed as the distinct external consumer

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`wikidataexplorer-metamuseum-prod`.

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Feed-Read Evidence

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Partner-reported read:

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`sha256:4cce5c5eb4a6001d8baf4156763ba141a3ef1574b378a95d42ed60f8478dd88b`

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The partner specifically verified a Met object activity for object `544864`,

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"Statuette of a hippo goddess, probably Taweret", through equivalent QID

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`Q29385853` into Wikidata Explorer's own evidence workflow.

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This is filed as MetaMuseum's third real external ActivityStreams feed-read

\n

consumer. It satisfies the declared external-consumer count in the local

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syndication evidence artifact, while strict ActivityStreams adoption remains

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blocked until `Update` and `Delete` activity reads are observed and durable

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callback verification is accepted.

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Callback Evidence

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Wikidata Explorer provided a public callback endpoint:

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MetaMuseum verified the callback on `2026-07-05T07:49:10.500Z` using a real Met

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backfill `Create` activity for object `544864`. The callback returned:

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This counts as accepted durable callback evidence for

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`wikidataexplorer-metamuseum-prod`. `Update` and `Delete` remain uncounted until

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genuine MetaMuseum activities of those types are emitted and observed.

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Local evidence:

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`artifacts/activity-syndication/wikidataexplorer-metamuseum-prod-callback-2026-07-05.json`

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`artifacts/activity-syndication/activity-syndication-evidence-latest.json`

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`storage/activity-subscriptions.json`

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`storage/activity-consumers.json`

\n","updatedAt":"2018-10-20T01:46:40.000Z","checksum":"d2dee0ad49d3fec818996ebe64503cc67d2247885260f6a7e11bc09d9fc69b01","checksumPrefix":"d2dee0ad49d3","anchorCount":2,"lineCount":64,"rawUrl":"/api/docs/content?path=linked-art%2Fwikidataexplorer-consumer-evidence.md","htmlUrl":"/docs?doc=linked-art%2Fwikidataexplorer-consumer-evidence.md","apiUrl":"/api/docs/content?path=linked-art%2Fwikidataexplorer-consumer-evidence.md"}