PUBLIC DATASET — NOT a TRADES DATA capture. PUBLIC DATASET processed by the TRADES DATA pipeline to demonstrate the pipeline — this is NOT TRADES DATA captured footage. RGB + our overlays (hand landmarks + object masks) only; no MANO/SMPL mesh.

Attribution (CC BY 4.0): HO-Cap (CC BY 4.0) — Wang et al., HO-Cap: A Capture System and Dataset for 3D Reconstruction and Pose Tracking of Hand-Object Interaction. irvlutd.github.io/HOCap · source

overlays: hand landmarks + object masks (no MANO/SMPL mesh) · PII review: PASSED_FACE_BLUR · LICENSE: docs/legal/external/HoCap-license.md

Buyer dataset viewer

hocap-demo-01

Raw clip, action evidence, WHY chain, worker review, closure audit, and standards status.

not ready0/0 standards passing; 0 blocking pending

actionTimelinerequires worker review and downstream verificationwhyClaimsblockedagenticWhyblockedreviewQuestionsnot computedworkerReviewnot computedclosurenot computedrawIntegritynot computedsemanticIndexnot computedstandardsnot computedbundlenot computedlegalnot computeddatasetCardnot computed

truth states0

dataset cardpending

Action timeline

Truth-state spans

0:00.0

Sensor evidence overlay

Audio and IMU evidence tied to player time

alignment not computed

Audio waveform

no published markers

Audio extract not computed; PCM materialized: no; 0 public alignment anchors; per-stream impulse count not published.

Helmet IMU jerk

no published markers

Cross-stream alignment not computed; 0 public alignment anchors; per-stream impulse count not published.

Wrist IMU jerk

no published markers

Sensor manifest not computed; 0 public alignment anchors; per-stream impulse count not published.

Phone IMU + events

no published markers

Sensor manifest not computed; 0 public alignment anchors; per-stream impulse count not published.

Signal-quality preview — what a buyer evaluates before signing

Clip stats, action-span profile, and cross-stream agreement (anti-fabrication evidence)

duration—

fps—

resolution—

action spans11

labeled time0.4 min

alignment—

Action-span length distribution

<1s0
1-3s11
3-10s0
10-30s0
>30s0

Cross-stream timing agreement

Cross-stream alignment artifact is not published for this clip.

Selected span WHY detail

wait

0:00.0-0:02.0

description: worker sits at table with right hand resting on surface; no object interaction occurs during this interval
truth state: inferred candidate
confidence: 0.80
granularity: 5.00s

Evidence chain

No evidence chain rows published for this span.

WHY claims and citations

No promoted WHY claims overlap this span.

Worker review

No worker-review question overlaps this span.

Closure audit

Publish readiness

not computed

Closure audit artifact is pending at /lab-clips/closure-audit/hocap-demo-01.json.

Audit depth — the verifiability moat

Verify it yourself: provenance, measured accuracy, signing

show, don't tell

Every shipped decision carries a re-derivable provenance record, a worker-confirmed accuracy measurement, and an honest signing status — rendered exactly as produced. Missing surfaces render as missing, never mocked.

Per-decision provenance — the verifiability moat

Verify it yourself

Per-decision provenance surface is not published for this clip yet. Expected at /lab-clips/provenance/hocap-demo-01.json. It renders as missing, never mocked.

Audited linkage — the per-decision spine

One spine, two products

Audited-linkage surface is not published for this clip yet. Expected at /lab-clips/audited-linkage/hocap-demo-01.json. Renders missing, never mocked.

Measured accuracy (worker-confirmed)

/lab-clips/measured-accuracy/hocap-demo-01.json

computed: present

Buyer-ready?buyer_acceptance: presentgated from buyer delivery

measured_accuracy

{
  "accuracy": null,
  "artifact_truth_state_counts": {
    "action-timeline": {
      "_empty": 1
    },
    "why-claims": {
      "_empty": 1
    }
  },
  "caveats": [
    "n_worker_answers=0: no calibration data yet; scaffold only."
  ],
  "clip_id": "hocap-demo-01",
  "delta_truth_state_counts": {},
  "n_distinct_workers": 0,
  "n_worker_answer_deltas": 0,
  "schema_version": "measured-accuracy-v1",
  "status": "SCAFFOLD_NO_CALIBRATION_DATA",
  "wilson_bounds": {
    "estimate": null,
    "lower": 0,
    "upper": 1
  }
}

rung_coverage

{
  "action-timeline": {
    "field_count_by_truth_state": {
      "_empty": 1
    },
    "total_fields": 1
  },
  "why-claims": {
    "field_count_by_truth_state": {
      "_empty": 1
    },
    "total_fields": 1
  }
}

methodology_notes

[
  "Worker-confirmed label accuracy = fraction of worker_answer deltas where the auto-label was CONFIRMED UNCHANGED (WORKER_CONFIRMED). Corrections (WORKER_REJECTED) count against.",
  "Conformal calibration (MAPIE/crepes) requires a real calibration set; current bounds are Wilson interval prior — not calibrated.",
  "PROV blocks are W3C-PROV terms as dict keys (no rdflib). Render as RDF-PROV if a full graph is required."
]

C2PA / provenance signing status

Missing artifact

missing

C2PA provenance surface is not published for this clip yet. Expected at /lab-clips/c2pa-provenance/hocap-demo-01.json.

Raw integrity

Missing artifact

missing

Raw integrity artifact is missing. Expected at /lab-clips/raw-integrity/hocap-demo-01.json.

Semantic index

Missing artifact

missing

Semantic index artifact is missing. Expected at /lab-clips/semantic-index/hocap-demo-01.json.

Bundle status

Missing artifact

missing

Buyer bundle manifest is missing. Expected at /buyer-bundles/hocap-demo-01/tier1-raw/manifest.json.

Worker review · how we interrogate ambiguity

Sample processing — the worker-review session for this clip is generated once the clip is processed. We render nothing until real claims exist: no fabricated questions, no placeholder answers.

Modality matrix