How it works

Provenance

How data flows from authoritative sources through the engine to the API and exports.

Public data and APIs never bypass the engine. Data flows in one direction, and every response records where it came from.

The path of a fact

Every API response wraps its data in a meta object:

apiVersion	The API version (v0).
schemaVersion	Schema version the data conforms to.
dataVersion	Graph data version.
generatedAt	Fixed graph-release timestamp — deterministic, not per-request.
source	The engine that produced the response.
license	License for this response's data.
attribution	How to credit the data.
provenance	A note on how this specific response was derived.

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