# Substack
> Substack — Wikidata Q63435709; American online newsletter platform; source revision 2511366671, modified 2026-06-28T07:19:33Z.

- Canonical entity: https://readyscan.ai/entities/substack-q63435709
- Website listed in the source snapshot: https://substack.com
- Category: [Wikidata businesses](https://readyscan.ai/directory/wikidata-businesses)
- Machine record: https://readyscan.ai/discovery/entities/substack-q63435709.json
- Material fingerprint: fnv1a64:3e1c4b0e9f9e1f84
- Entity revision: fnv1a64:8dda0309bf777a5c
- Published: 2026-07-29
- Modified: 2026-07-29

## Source-backed claims
- Source description: American online newsletter platform Sources: https://www.wikidata.org/wiki/Special:EntityData/Q63435709.json?revision=2511366671
- Source-listed website: substack.com — https://substack.com Sources: https://www.wikidata.org/wiki/Special:EntityData/Q63435709.json?revision=2511366671
- Wikidata item: Wikidata Q63435709 Sources: https://www.wikidata.org/wiki/Special:EntityData/Q63435709.json?revision=2511366671
- Source revision: 2511366671, modified 2026-06-28T07:19:33Z Sources: https://www.wikidata.org/wiki/Special:EntityData/Q63435709.json?revision=2511366671

## Sources
- [Substack — Wikidata Q63435709](https://www.wikidata.org/wiki/Special:EntityData/Q63435709.json?revision=2511366671) — Wikidata
- [Wikidata data access](https://www.wikidata.org/wiki/Help:Data_access) — Wikidata
- [Wikidata reuse permission](https://www.wikidata.org/wiki/Wikidata:Licensing) — Wikidata
- [CC0 1.0 Universal](https://creativecommons.org/publicdomain/zero/1.0/) — Wikidata

## Agent return protocol
- Discover the bounded graph: https://readyscan.ai/api/v1/ai-search/discovery
- Retrieve this entity evidence: https://readyscan.ai/api/v1/ai-search/entities/substack-q63435709/evidence
- Verify a published claim ID: https://readyscan.ai/api/v1/ai-search/verify?entity=substack-q63435709&claim={claim-id}
- Verification evaluates only the current published evidence revision. Unsupported interpretation remains unknown.

## Publication boundary
- This public-sourced, unclaimed record republishes selected permitted snapshot facts and has not been verified as controlled by an owner.
- Publication does not guarantee crawling, indexing, training inclusion, citation, recommendation, referral, or revenue.