What this can establish
- What the retained accepted evidence release reported at a supported as-of time.
- Which exact evidence values changed between two compatible retained releases.
All evidence guidesQuestion answered
Evidence guide
Understand observed evidence history
Separate reconstructed earlier releases from evidence PropSignal actually observed changing after collection began.
What is the difference between an earlier public record and an observed change?
History is reconstructed from sealed evidence and deterministic diffs. It is not backfilled by pretending earlier collection occurred.
How PropSignal reads it
- Seal each accepted evidence release with its retrieval time, source basis, and content hashes.
- Render an as-of view only from retained compatible releases; never substitute current evidence into an earlier date.
- Diff stable logical facts and events into added, changed, corrected, retracted, or unresolved evidence states.
- Label reconstructed chronology separately from changes observed after PropSignal began collecting the source.
Method observed_history_reference_v1 · version 1.0
What this does not establish
- When a real-world condition first began if the source reported it late or corrected it later.
- Complete history before PropSignal's retained evidence horizon or causation between events.
Dates and missing evidence
- Date meaning
- Effective, published, retrieved, observed, and detected dates stay distinct. The interface labels the date it can support instead of collapsing them into one timeline date.
- When evidence is missing
- No observed change means no accepted change was detected within the retained compatible releases; it does not mean the property or every official record stayed unchanged.