Public-record source / channel
A dataset, disclosure or register produced by a particular market, settlement, reporting, operational or institutional process. It carries only the relation that process records; it is not the full physical system.
Definitions with boundaries
Public grid evidence lexicon
Each term names a specific observable relation. The definition includes what the term does not establish.
Authority. This page explains public terms. It does not admit a source relation, issue a verdict, or extend the claim boundary of any released report.
Identity bridge
The evidence relation used to connect two record identities for a stated purpose. Its scope and confidence limit every downstream claim. It does not establish physical-asset identity unless that mapping is itself evidenced.
Time spine
The declared time structure used to locate records on event coordinates, retrieval states, and report windows. Records sharing a window do not necessarily describe the same event or the same observation version.
Retrieval maturity
The observable age and version history of a retrieved record relative to the report date. Retrieval maturity is not certified settlement finality unless the relevant settlement-run identity is available.
Claim boundary / claim ceiling
The furthest statement an observation may support under its source, identity, time, transformation, coverage, and missingness conditions. Rendering, repetition, or buyer need cannot raise it.
Typed absence
An absence statement that names why no result is shown: no record observed within a proven aperture, insufficient source coverage, computation not built, relation not admitted, or channel structurally unavailable. These are explanations, not a replacement verdict set. None of them means that nothing happened.
Cross-channel coherence
The relationship between separately produced public-record channels after their identity, time, orientation, and comparison boundaries have been aligned. Channels may support one another, diverge, leave an open gap, or remain not comparable. Coherence does not establish causality.
Public-record duty profile
A time-structured external footprint formed from public accepted-action, metering, declaration, contract, disclosure and registry records that pass the relevant identity and time gates. It describes visible public-record duty, not the complete physical duty or internal state of an asset.
Accepted-action cadence
The frequency, spacing, duration, direction, and switching pattern of publicly visible accepted balancing actions. It is shaped by the granularity and rules of the dispatch record, including the operational instrument in use. It is not total cycling or a fatigue measure.
Instructed-trajectory energy
A derived quantity constructed from the published trajectory of accepted BM instructions under a frozen method. It is not settlement-metered energy and does not establish delivered physical energy.
B1610 metered record
A settlement-period public record of signed net quantity against a B1610 bmUnit identifier. Before it supports a claim, the subject, settlement coordinate, retrieval state, and applicable sign convention must pass that claim's gates. It does not by itself establish internal physical allocation, sub-period behaviour, gross throughput, service delivery, asset condition, or a physical-asset mapping.
Declared capability
The maximum export or import level declared by a participant through MEL or MIL records. It records a participant-declared market boundary, not directly observed physical capability, availability, or health.
Support diversity
A descriptive concentration measure derived from visible accepted BM participation, reported here as an effective number using inverse HHI. It is not ownership diversity, control diversity, operational resilience, or physical redundancy.
Targeted evidence request
A specific request for owner-held records designed to resolve a bounded public-record question, identity gap, time-alignment gap, or unresolved cross-channel relation. It is a review question, not a risk conclusion.