37. Telemetry, media, and high-rate evidence protocol
Telemetry admission preserves producer identity, boot/session boundaries, native sample identity, exact channel semantics, raw clock readings, encoded and plaintext integrity, configuration, calibration, privacy and quality. A time-series database row is a…
Concept & directionLNK
Telemetry admission preserves producer identity, boot/session boundaries, native sample identity, exact channel semantics, raw clock readings, encoded and plaintext integrity, configuration, calibration, privacy and quality. A time-series database row is a projection of this evidence, not the original evidence itself.
Channel, clock, configuration or calibration changes close a segment instead of mutating its interpretation.
#37.1 CaptureSession and producer boot identity
Capture-session and sample identity
CaptureSession {
captureSessionId, tenantId, producerDeviceId, producerSystemId,
bootId, operationId?, configurationId, controllerSetDigest?,
startedAtReceipt, declaredStartClockReading,
firmwareDigest, softwareSetDigest, channelSetDigest,
clockDomainRefs[], calibrationSetDigest,
acquisitionPurposeRefs[], privacyPolicyRef, retentionClass,
sessionState, closingReceiptRef?
}
bootId is random per producer restart and never inferred from a clock reset.
Sample identity = (producerDeviceId, bootId, channelId, sourceSequence).
The same identity with equal canonical sample bytes is a duplicate;
the same identity with different bytes is PRODUCER_EQUIVOCATION.| Session state | Allowed operation | Terminal evidence |
|---|---|---|
| DECLARED | negotiate channel/schema/clock/calibration locks | none |
| OPEN | reserve uploads and admit segments | none |
| DEGRADED | admit with named limitations; no silent quality recovery | degradation records |
| CLOSING | finish committed uploads and reconcile gaps | gap/completeness assessment |
| CLOSED | read/replay only | signed closing receipt and terminal ranges |
| ABORTED | isolated recovery only | reason, retained artifacts and unknown-effect ranges |
#37.2 ChannelDescriptor 1.3
Versioned signal meaning
ChannelDescriptor {
channelId, descriptorVersion, sourceNamespace, nativeSignalName,
phenomenonRef, featureOfInterestRef, quantityKindRef,
datatype: i8|i16|i32|i64|u8|u16|u32|u64|f32bits|f64bits|bool|utf8|binary,
shape: scalar|fixedVector|fixedMatrix|variableArray|struct,
shapeParameters, byteOrder, unitRef, dimensionSignature,
frameRef?, axisSemantics[], signConvention,
measurementBoundaryRef?, measurementLocationRef?,
samplingMode, nominalRateHz?, validRange?, saturationRange?,
calibrationRef?, uncertaintyModelRef?, clockId,
interpolationPolicy, aggregationPolicy, qualityBitRegistryDigest,
privacyClass, retentionClass, rightsRef
}
Binary floating samples are stored as exact IEEE-754 bit patterns. Non-finite
patterns remain raw evidence but cannot become normalized QuantityValue values.
Datatype, shape, unit, frame, calibration, privacy or clock changes mint a new
descriptor version and force a segment boundary.#37.3 Sample-batch column profile
| Column | Type | Invariant |
|---|---|---|
| sourceSequence | u64, delta-encoded allowed | Strictly increasing inside producer+boot+channel unless sampling mode declares sparse event IDs |
| deviceTick | u64/i64 according to ClockDomain | Raw reading retained; unwrap is a derivation |
| value | descriptor datatype/shape | No unit/frame conversion in raw batch |
| validity | bitmap | False means value bytes are not normalized data; raw bytes may remain in artifact |
| quality | u32 or u64 bitset | Registry-locked meanings; unknown bits preserved |
| uncertainty | optional scalar/vector or shared model ref | Applies to value and named confidence basis |
| receiptTimeDelta | optional signed integer ns | Transport observation only; not phenomenon time |
| sourceFlags | optional native bitset/blob | Exact producer status retained independently of normalized quality |
| Reference flag | Meaning |
|---|---|
| VALID | normalized value may be consumed under remaining flags |
| MISSING | sample identity/time exists but value is absent |
| UNAVAILABLE | producer cannot provide value |
| SENSOR_FAULT | source reports failed/degraded sensing |
| SATURATED / CLIPPED | physical or digital range exceeded |
| OUT_OF_RANGE | schema-valid bytes outside declared operating/measurement range |
| STALE | age exceeds consumer freshness requirement |
| CLOCK_UNSYNCHRONIZED | reference-time mapping does not meet profile |
| CALIBRATION_EXPIRED | calibration validity elapsed at observation |
| ESTIMATED / INTERPOLATED / FILTERED / DERIVED | value is not an unaltered direct sample |
| CONFLICTED | another same-scope value cannot be reconciled automatically |
#37.4 SegmentManifest 3.0
Immutable telemetry segment manifest
SegmentManifest {
segmentId, captureSessionId, producerDeviceId, bootId,
configurationId, operationId?, channelDescriptorLocks[],
clockModelLocks[], calibrationLocks[],
sequenceRanges[{channelId, first, last, sampleCount}],
deviceTickRanges[], observedReferenceTimeRanges[],
encodedArtifact: {digest, byteLength, mediaType, codec, codecVersion},
plaintextArtifact: {digest, decodedByteLength, schemaDigest},
encryptionEnvelopeDigest?, compressionDictionaryDigest?,
rowGroupDigests[], merkleRoot?, statisticsDigest?,
gapClaims[], qualitySummary, privacyClass, retentionClass,
rightsRef, manifestDigest
}
Reference scalar profile closes a segment at the first of:
60 seconds of mapped time; 64 MiB decoded; 1,000,000 rows;
producer boot/configuration/channel/clock/calibration/privacy change;
explicit discontinuity or session close.
Hard limits: 256 MiB encoded, 1 GiB decoded, expansion ratio 100:1.
Large image, LiDAR, sonar, simulation or mesh frames use separate bounded profiles.plaintextArtifact.digest identifies decoded semantic bytes. encodedArtifact.digest verifies stored compressed/encrypted bytes. Randomized encryption can change the encoded digest without changing plaintext identity. Object-store ETag is never accepted as a cryptographic digest.
#37.5 Streaming ingestion state machine
- Authenticate workload and producer; authorize capture session, purpose, quota and descriptor locks before issuing a short-lived upload capability.
- Stream-decode into bounded buffers while enforcing encoded size, decoded size, expansion ratio, nesting and row limits. Never allocate from untrusted declared sizes alone.
- Verify encoded and plaintext digests, schema/footer integrity and row-group digests before semantic admission.
- Resolve configuration, channel, clock, calibration, privacy and rights locks from the local registry/ledger checkpoint.
- Validate sample identities, sequence coverage, datatype/shape, unit/dimension, clock ranges, quality encoding and finite/range policies without changing source values.
- Classify duplicate, equivocation, gaps, overlaps, discontinuity, saturation, dropout, stale calibration and clock quality; produce a deterministic QualityAssessment.
- Commit artifact locator, SegmentManifest, admission receipt and outbox event atomically; derived metrics run only after the source commit.
| Disposition | Meaning | Downstream permission |
|---|---|---|
| REJECT | unauthorized, over limit or structurally impossible before semantic retention | safe failure receipt only |
| QUARANTINE | integrity/equivocation/malicious or uninterpretable evidence isolated | no ordinary projection/derivation |
| ACCEPT_PENDING | bytes valid but non-authorizing reference unresolved | retain; no safety, market or factual promotion |
| ACCEPT_DEGRADED | interpretable with explicit quality defects | only consumers whose policy accepts every limitation |
| ACCEPT_CONFLICTED | valid competing evidence remains | conflict-aware projections only |
| ACCEPT | all required checks pass | normal policy-bound use |
#37.6 Media, synthetic content, and sensor fusion
- CaptureReceipt binds device/session, exact configuration, raw clock reading, approximate location/privacy class, artifact digest, encoding, capture software and custody start.
- C2PA-compatible provenance can be attached as evidence but does not replace platform rights, consent, subject resolution or factual verification.
- Synthetic, composited, enhanced and generatively extended media remain in creative/synthetic lanes. Edit lineage names source artifacts and transformations; a photorealistic output never becomes condition evidence by repetition.
- Fusion produces a DerivedObservation with exact source sample ranges/artifacts, clock/frame transforms, association hypotheses, algorithm/model digests, parameters, covariance/confidence semantics and alternatives.
- Similarity search returns candidates and calibrated scores. It cannot merge vehicle identity, assert ownership, reveal a private profile or notify an owner without a separate policy decision.
#37.7 Derived metric contract
Reproducible metric definition and result
MetricDefinition {
metricId, version, inputPredicates[], timeAlignmentPolicy,
gapPolicy, minimumCoverage, formulaOrModelDigest,
outputQuantityKind, outputUnit, uncertaintyMethod,
applicabilityEnvelopeRef, privacyPolicyRef
}
MetricResult {
definitionRef, inputRecordIds[], exactSegmentRanges[],
configurationId, operationId?, validTime,
value, uncertainty, coverageFraction, qualityFlags[],
exclusions[], computationReceiptRef, invalidationState
}
Examples:
energy = integral(P(t) dt)
energyIntensity = energy / distance
Irregular sampling requires a declared integration rule. Distance below a
metric-specific minimum, insufficient coverage, uncertain clock order or an
invalidated calibration produces INDETERMINATE, not a plausible number.