# properties.id.description
Source id, referenced by sourceId / sourceIds / evidenceIds elsewhere in the record.

# properties.retrievedAt.description
When we fetched it (ISO 8601 date-time).

# properties.checksum.description
SHA-256 hex of the retrieved body, when known.

# properties.reachability.description
Last link-check result: unchecked, ok, redirected, unreachable, changed.

# properties.publishedAt.description
Publication or period date stated by the source itself.

# properties.notes.description
Curator notes, typically the verbatim sentences the figures were read from.

# description
A cited source: the exact URL, who published it, when we retrieved it, and its last known reachability.