argand-site-registry/docs/SOURCE-CANDIDATES.md

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 Organization websites remain assertions; inactive/withdrawn edges are ineligible.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 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.
GND	Research hold	The DNB open-data distribution 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. 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.
OpenStreetMap	License-architecture hold	No ingestion until an ODbL-compatible attribution, database-right and redistribution design is accepted. See the OSMF license 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.