Published then
Reconstruct what the upstream publisher had released by a selected time. Later retrieval does not move the publisher's clock.
Most data products keep only the current answer. This programme is designed to preserve the source edition, retrieval time, missing fields and later revisions needed to ask what was known when, and what changed afterwards.
The public contract exists before the first public edition. That makes the empty state testable, downloadable and honest while private collection remains held behind its database and source-rights gates.
What the latest qualified record now says about the selected historical period.
Collection, comparison and publication are separate gates. Until an edition clears all three, this surface exposes the contract and its negative space, not a chart manufactured from the current answer.
Reconstruct what the upstream publisher had released by a selected time. Later retrieval does not move the publisher's clock.
Reconstruct what Solar Analytica had captured by that time. A missed retrieval stays missing; it is never rewritten as unchanged.
Read the latest qualified record for a historical observation period while retaining the superseded values beside it.
The founding collector is wired to reuse Solar Analytica's existing Ember annual grid-mix read across ten systems. Once its held gates are cleared, it can record normalized values, nulls, absences, source versions and cryptographic fingerprints in private append-only tables. It cannot make automatic causal claims or publish a capture automatically.
Canonical hashes make silent mutation detectable while keeping provider payloads out of the memory store.
A prior value and its correction coexist. Null and zero remain different observations.
Rights, receipt and comparability review must pass before a named human promotes an edition.
NASA POWER remains named-point resource context until a defensible national capacity-weighted index exists.
Ember supplies the founding national electricity record. NASA POWER supplies a separate named-location climate context on existing market pages. Their divergence remains an unresolved observation unless a third, independent record supports a cause.