| address | Object | true | https://uor.foundation/state/Binding | https://uor.foundation/u/Element | The UOR address being bound in this binding. |
| content | Object | true | https://uor.foundation/state/Binding | https://uor.foundation/schema/Datum | The datum value bound to the address in this binding. |
| boundType | Object | false | https://uor.foundation/state/Binding | https://uor.foundation/type/TypeDefinition | The type under which this binding's datum is resolved. |
| timestamp | Datatype | true | https://uor.foundation/state/Binding | http://www.w3.org/2001/XMLSchema#dateTime | The time at which this binding was created. |
| binding | Object | false | https://uor.foundation/state/Context | https://uor.foundation/state/Binding | A binding held in this context. |
| capacity | Datatype | true | https://uor.foundation/state/Context | http://www.w3.org/2001/XMLSchema#positiveInteger | The maximum number of bindings this context can hold. |
| contentAddress | Datatype | true | https://uor.foundation/state/Context | http://www.w3.org/2001/XMLSchema#string | The content-derived address of this context, uniquely identifying its current state in the UOR address space. |
| wittLength | Datatype | true | https://uor.foundation/state/Context | http://www.w3.org/2001/XMLSchema#positiveInteger | The Witt level of this context's address space. |
| activeBindings | Object | false | https://uor.foundation/state/Frame | https://uor.foundation/state/Binding | The bindings currently in scope for this frame. |
| context | Object | true | https://uor.foundation/state/Frame | https://uor.foundation/state/Context | The context this frame is a view of. |
| constraint | Object | true | https://uor.foundation/state/Frame | https://uor.foundation/type/Constraint | The type:Constraint determining which bindings from the context are visible in this frame. The resolver applies this constraint to filter the context's binding set, producing the frame's active bindings. An absent constraint means all bindings are visible. |
| from | Object | true | https://uor.foundation/state/Transition | https://uor.foundation/state/Context | The context before this transition. |
| to | Object | true | https://uor.foundation/state/Transition | https://uor.foundation/state/Context | The context after this transition. |
| addedBindings | Object | false | https://uor.foundation/state/Transition | https://uor.foundation/state/Binding | Bindings added to the context in this transition. |
| removedBindings | Object | false | https://uor.foundation/state/Transition | https://uor.foundation/state/Binding | Bindings removed from the context in this transition. |
| trace | Object | true | https://uor.foundation/state/Transition | https://uor.foundation/trace/ComputationTrace | The computation trace recording the kernel operations that effected this state transition. |
| topologicalSnapshot | Object | true | https://uor.foundation/state/Transition | https://uor.foundation/morphism/TopologicalDelta | A snapshot of topological invariants at this transition point. |
| sessionBindings | Object | true | https://uor.foundation/state/Session | https://uor.foundation/state/Context | The shared context holding all bindings accumulated across the queries in this session. |
| sessionQueries | Datatype | true | https://uor.foundation/state/Session | http://www.w3.org/2001/XMLSchema#nonNegativeInteger | The number of RelationQuery evaluations completed in this session. |
| aggregateSiteDeficit | Object | true | https://uor.foundation/state/BindingAccumulator | https://uor.foundation/partition/FreeRank | The aggregate FreeRank deficit across all accumulated bindings: the total remaining free sites that have not yet been closed by resolution. Decreases monotonically as the session progresses. |
| accumulatedBindings | Object | false | https://uor.foundation/state/BindingAccumulator | https://uor.foundation/state/Binding | A binding accumulated by this accumulator from a resolved RelationQuery. |
| boundaryReason | Datatype | true | https://uor.foundation/state/SessionBoundary | http://www.w3.org/2001/XMLSchema#string | A human-readable description of why this session boundary was triggered. |
| boundaryType | Object | true | https://uor.foundation/state/SessionBoundary | https://uor.foundation/state/SessionBoundaryType | The typed reason category for this session boundary. |
| priorContext | Object | true | https://uor.foundation/state/SessionBoundary | https://uor.foundation/state/Context | The state:Context that was active before this boundary reset. |
| freshContext | Object | true | https://uor.foundation/state/SessionBoundary | https://uor.foundation/state/Context | The clean state:Context produced after this boundary reset, ready for subsequent queries. |
| groundingDegree | Datatype | true | https://uor.foundation/state/Context | http://www.w3.org/2001/XMLSchema#decimal | The saturation degree σ ∈ \[0, 1\] of this context. Defined by SC_2: σ = (n − freeRank) / n. |
| contextTemperature | Datatype | true | https://uor.foundation/state/Context | http://www.w3.org/2001/XMLSchema#decimal | The context temperature T_ctx ∈ \[0, ln 2\]. Defined by SC_1: T_ctx = freeRank × ln 2 / n. At σ = 1, T_ctx = 0. |
| isGrounded | Datatype | true | https://uor.foundation/state/Context | http://www.w3.org/2001/XMLSchema#boolean | Whether this context has reached full saturation (σ = 1). Equivalent to freeRank = 0, S = 0, T_ctx = 0 per SC_4. |
| groundingPhase | Object | true | https://uor.foundation/state/Context | https://uor.foundation/state/GroundingPhase | The current saturation phase of this context: Open, PartialGrounding, or FullGrounding. |
| groundingCertificate | Object | true | https://uor.foundation/state/GroundedContext | https://uor.foundation/cert/GroundingCertificate | The GroundingCertificate attesting that this context has reached full saturation. |
| witnessBinding | Object | false | https://uor.foundation/state/GroundingWitness | https://uor.foundation/state/Binding | A binding that contributed to the saturation process, recorded in this GroundingWitness. |
| witnessStep | Datatype | true | https://uor.foundation/state/GroundingWitness | http://www.w3.org/2001/XMLSchema#nonNegativeInteger | The step index at which a particular binding was applied during the saturation process. |
| residualFreeCount | Datatype | true | https://uor.foundation/state/Context | http://www.w3.org/2001/XMLSchema#nonNegativeInteger | The number of free (unbound) sites remaining in this context. At saturation, residualFreeCount = 0. |
| groundedContext | Object | true | https://uor.foundation/state/DomainGroundingRecord | https://uor.foundation/state/GroundedContext | The GroundedContext that this DomainGroundingRecord monitors. |
| groundedDomain | Object | true | https://uor.foundation/state/DomainGroundingRecord | https://uor.foundation/type/TypeDefinition | The domain within the context being tracked by this DomainGroundingRecord. |
| domainFreeCount | Datatype | true | https://uor.foundation/state/DomainGroundingRecord | http://www.w3.org/2001/XMLSchema#nonNegativeInteger | The number of free sites remaining in the specific domain tracked by this DomainGroundingRecord. |
| leasedSites | Object | true | https://uor.foundation/state/ContextLease | https://uor.foundation/partition/FreeRank | The subset of sites claimed by this lease. Must be disjoint from all other active leases on the same SharedContext (SR_9). |
| leaseHolder | Object | true | https://uor.foundation/state/ContextLease | https://uor.foundation/state/Session | The Session that holds this lease. |
| leaseSet | Object | false | https://uor.foundation/state/SharedContext | https://uor.foundation/state/ContextLease | A currently active ContextLease on this SharedContext. |
| composedFrom | Object | false | https://uor.foundation/state/SessionComposition | https://uor.foundation/state/Session | A predecessor session contributing bindings to this composition. Non-functional: one composition may merge two or more sessions. |
| compositionCompatible | Datatype | true | https://uor.foundation/state/SessionComposition | http://www.w3.org/2001/XMLSchema#boolean | Whether all predecessor binding sets passed the SR_8 consistency check. If false, the composition is invalid and must not be used as a session context. |
| compositionResult | Object | true | https://uor.foundation/state/SessionComposition | https://uor.foundation/state/Context | The merged Context produced by a valid composition. Only present when compositionCompatible = true. |
| towerConsistencyVerified | Datatype | true | https://uor.foundation/state/SessionComposition | http://www.w3.org/2001/XMLSchema#boolean | Whether the LiftChain tower consistency check (SR_8 parametric extension) was performed across all Q_0 through Q_k levels. Required for compositions involving sessions at Q_1 or higher. |