rtk-training/bjj-kimura-lesson001-trial

BJJ Kimura from Side Control — Research Trial (sampled across the action arc)

Tier: Research / Evaluation (free, CC BY-NC-SA 4.0) Source: RTK Motion Intelligence Platform · api.rtkmotion.io Full commercial dataset: rtk-training/bjj-kimura-lesson001 (gated)

A temporally-sampled trial subset of a full 4D motion-capture session of a Brazilian Jiu-Jitsu Kimura submission from side control, demonstrated by a Former IBJJF World Champion (anonymized) with a training partner. Multi-camera Captury volumetric capture, 12-camera synchronized rig.

What this dataset is

This is a research-tier preview of the full Lesson 001 capture. It preserves the complete technique arc — setup, application, resolution — by keeping every 4th frame from the source motion. Researchers can inspect the full skeletal trajectory of the technique without obtaining the full commercial release.

	Full Lesson 001 (commercial)	This research trial
Frame count	1215	304
Frame rate	60 fps	15.0 fps (effective)
Duration covered	20 s	20 s (same arc, downsampled)
Joint hierarchy	56-joint Captury rig + finger chains	identical
File set	mesh + rig + video + retargets + integrity	BVH + frames.json + manifest

The 4× subsampling makes this dataset insufficient for animation production (frame-rate too low for smooth playback) but fully sufficient for:

• Validating BVH parser / pipeline compatibility
• Citing the source capture in academic papers
• Biomechanical analysis at coarse temporal resolution
• Inspecting the 56-joint skeletal hierarchy
• Reproducing methods that operate on sparse keypoint data

File contents

File	Size	SHA-256 (12 char)
frames.json	2,602,219 bytes	af36347932c4…
mocap/subject_1.bvh	527,813 bytes	cbad13da7bb0…
mocap/subject_2.bvh	529,809 bytes	c163f70a8335…
preview/frames_flat.csv	2,921,288 bytes	a02338a1a366…

• mocap/subject_*.bvh — Per-subject skeletal animation. HIERARCHY preserved (56 articulating joints, 3-segment finger chains). MOTION subsampled to 304 frames at 15.0 fps; Frames: and Frame Time: headers rewritten for correct playback.
• frames.json — Per-frame world-space joint positions for both subjects, subsampled to match the BVH cadence. Each entry contains subject_1 and subject_2 dicts mapping joint name → [x, y, z].
• manifest.json — File-set manifest with SHA-256 hashes for integrity verification.

License — CC BY-NC-SA 4.0

This dataset is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International.

You may:

• ✅ Use, reproduce, and adapt the data for research, academic, and non-commercial purposes
• ✅ Cite and reference in publications (please use the attribution below)
• ✅ Share adapted materials under a compatible ShareAlike license

You may NOT:

• ❌ Use the data for commercial purposes (game development, animation production, film, simulation, AI training for commercial sale, etc.)
• ❌ Train machine learning models intended for commercial deployment
• ❌ Redistribute under a more permissive license

For commercial use, see the channel ladder below.

Commercial use — choose your channel

Tier	Channel	What's included	Price
Research (this dataset)	Hugging Face — free	Subsampled BVH + frames + manifest	$0
Commercial mesh + robot trajectory	Gumroad	OBJ + MTL + SKIN + Unitree G1 NPZ trajectories	$249
Studio commercial (multi-project)	Fab.com — rtkmotion publisher	Full Lesson 001 with rigged FBX + mesh + studio-wide rights	$599
Commercial AI / ML training	Protege.ai	Robot-retargeted G1 NPZ trajectories + AI-training rights	inquire
Per-file agent payments	api.rtkmotion.io/mcp (x402 / USDC)	BVH, video, robotarget per-asset	$0.25–$15

For full commercial bundle access through Hugging Face, see the gated sibling dataset: rtk-training/bjj-kimura-lesson001.

Provenance

Every file in this pack is referenced in manifest.json with its SHA-256 hash. The RTK Motion Intelligence Platform issues ECDSA-P256 signed provenance records on every paid transaction; verification:

• Public key: https://api.rtkmotion.io/.well-known/jwks.json
• Verify endpoint: https://api.rtkmotion.io/verify

Citation

@misc{rtk_bjj_kimura_lesson001_trial,
  title  = {BJJ Kimura from Side Control — Research Trial (sampled)},
  author = {RTK Motion Intelligence Platform},
  year   = {2026},
  url    = {https://huggingface.co/datasets/rtk-training/bjj-kimura-lesson001-trial},
  note   = {Temporally-sampled subset of the full Lesson 001 commercial capture.
            CC BY-NC-SA 4.0.}
}

Contact

• General questions: hello@rtkmotion.io
• Commercial licensing: hello@rtkmotion.io
• Programmatic access: https://api.rtkmotion.io/mcp