close: schema:identifier
An external identifier for an entity — ticker, ISIN, FIGI, CIK or registry number. Separate from Entity because an entity legitimately carries many identifiers, and because each one has its own validity interval: tickers get reassigned and registry numbers get superseded.
| slot | range | description | |
|---|---|---|---|
dataco_id | string | required | Certvas entity identifier — a deterministic hash of the LEI where one exists, else a ULID. Stable across rebuilds, which is what lets it be a public, citable identifier. |
id_type | IdentifierTypeEnum | required | Which identifier scheme id_value belongs to. |
id_value | string | required | The identifier itself, as issued. |
exchange_mic | string | optional | ISO 10383 Market Identifier Code, where the identifier is exchange-scoped. Null for scheme-global identifiers such as ISIN. |
observed_at | datetime | required | When Certvas itself observed this value. Never a proxy for publication date. |
source_ref | string | required | URL or document-hash pointer into the immutable raw archive. |
license_class | string | required | License Register ID governing redistribution of THIS row. Per-row rather than per-table because a single table legitimately mixes sources with different terms. |
valid_from | date | required | Start of the interval over which this assertion holds. |
valid_to | date | optional | End of the validity interval; NULL means current. Half-open, so `valid_from <= t < valid_to` selects without double-counting the boundary. |