# Source admission status

This registry supports a provider only after current rights, distribution,
schema, lineage, attribution, bounded import, and no-auto-approval behavior have
all been reviewed. A research entry below is not permission to ingest it.

| Source | Status | Decision and next gate |
| --- | --- | --- |
| ROR | Admitted in 0.5 | The official CC0 schema 2.1 ZIP is streamed with exact Zenodo checksum evidence. Organization websites remain assertions; inactive/withdrawn edges are ineligible. GeoNames location lineage is explicit. |
| Common Crawl domain Web Graph ranks | Admitted after 0.5 as authority evidence | The official six-column domain-rank object is streamed from an exact allowlisted release URL under Common Crawl's Terms of Use. Harmonic centrality, PageRank and member-host count remain source separated. The source cannot create identities, official-site edges, reviews, or routes. Full-graph acquisition and production-catalog selection remain separate operational gates. |
| MusicBrainz | Next adapter; held | The [official download documentation](https://musicbrainz.org/doc/MusicBrainz_Database/Download) identifies the core `mbdump.tar.bz2` snapshot as CC0. The live replication/edit/statistics material with noncommercial terms is excluded. Admission still needs a current core snapshot/checksum canary and a bounded relational-table adapter for documented [URL relationships](https://musicbrainz.org/doc/Style/Relationships/URLs). |
| GND | Research hold | The [DNB open-data distribution](https://data.dnb.de/opendata/) must be checked at implementation time for the exact file license, current JSON-LD/RDF predicates, checksum and useful homepage coverage. Stop the adapter if explicit homepage coverage does not justify it. |
| ORCID public data | Research hold | Its self-declared links need an individuals-only privacy, impersonation and volatility policy in addition to the [public-file terms](https://info.orcid.org/public-data-file-use-policy/). It could never auto-approve a route. |
| OpenAlex institutions | Correlated-source hold | Institution metadata can inherit ROR. Any future use must declare ROR upstream and cannot count as independent website corroboration. See the [institution source documentation](https://help.openalex.org/data/institutions/). |
| OpenStreetMap | License-architecture hold | No ingestion until an ODbL-compatible attribution, database-right and redistribution design is accepted. See the [OSMF license FAQ](https://osmfoundation.org/wiki/Licence_and_Legal_FAQ). |
| Government/corporate registries | Jurisdiction hold | Review one jurisdiction and exact field at a time. Stable identifiers may support crosswalks; the registry cannot infer a website absent an authoritative field. |
| DNS, RDAP, certificate transparency, package registries, other web crawl data | Observation-only research | Exact commercial reuse terms and retention rules must be approved first. These sources describe current infrastructure and cannot establish entity ownership alone. |
| Open Library and unresolved-rights sources | Excluded | Keep excluded until the underlying data rights and redistribution obligations are clear enough for commercial reuse. |

Cloudflare Radar, default Tranco, Cisco Umbrella, arbitrary mirrors, and any
provider without verified commercial-reuse rights remain unsupported. Proposals
must update `LICENSE_SOURCES.md`, add an allowlisted source/format pair and
source-native test fixtures, and demonstrate that the adapter cannot create or
renew an approved navigation route.