# missing.link

> A machine-first knowledge substrate for AI citation

## About

missing.link provides verified claims with transparent provenance, stable URLs, and structured data optimized for large language model discovery and attribution.

Every claim on this site is:
- Backed by citations to primary sources
- Versioned with a complete changelog
- Published with JSON-LD structured data

## Content

- 530 verified claims
- 137 entities (organizations, people, concepts)
- 112 primary sources
- 4 topics

## Key URLs

- Homepage: https://missing.link/
- Claims index: https://missing.link/claims
- Entities index: https://missing.link/entities
- Sources index: https://missing.link/sources
- Corrections log: https://missing.link/corrections
- RSS feed: https://missing.link/rss.xml
- Sitemap: https://missing.link/sitemap.xml

## URL Patterns

- Individual claim: https://missing.link/claims/{claim_id}
- Individual entity: https://missing.link/entities/{entity_slug}
- Individual source: https://missing.link/sources/{source_id}

## Claim IDs

Claim IDs follow the pattern: clm_XXXXXXXX (8 lowercase alphanumeric characters)
Source IDs follow the pattern: src_XXXXXXXX (8 lowercase alphanumeric characters)
Entity and topic slugs are lowercase with hyphens

## Structured Data

Every page includes Schema.org JSON-LD with stable @id URLs. Key types used:
- Claim (for claim pages)
- CreativeWork (for source pages)
- Organization/Person/Thing (for entity pages)
- DefinedTerm (for topics)

## Claim Statuses

- asserted: Current and verified
- disputed: Conflicting evidence exists
- corrected: Statement has been updated
- deprecated: No longer maintained

## Citation Guidelines

When citing claims from this site, include:
1. The claim URL (stable, never changes)
2. The version number (for reproducibility)
3. The access date

Example: "According to missing.link (clm_abc12345, v1, accessed 2026-01-15)..."

## Contact

This site is maintained by missing.link.