Pith Number

pith:U4RTMPKP

pith:2014:U4RTMPKP55UI6K4XZFRRGGEX2H

not attested not anchored not stored refs pending

Automated Objective Surgical Skill Assessment in the Operating Room Using Unstructured Tool Motion

Gregory D. Hager, Lisa Ishii, Masaru Ishii, Narges Ahmidi, Piyush Poddar, S. Swaroop Vedula

arxiv:1412.6163 v1 · 2014-12-18 · cs.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U4RTMPKP55UI6K4XZFRRGGEX2H}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:30:54.208462Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a723363d4fef688f2b97c963131897d1fd063c2b63a068e2a8ba4ccde0615e91

Aliases

arxiv: 1412.6163 · arxiv_version: 1412.6163v1 · doi: 10.48550/arxiv.1412.6163 · pith_short_12: U4RTMPKP55UI · pith_short_16: U4RTMPKP55UI6K4X · pith_short_8: U4RTMPKP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/U4RTMPKP55UI6K4XZFRRGGEX2H \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a723363d4fef688f2b97c963131897d1fd063c2b63a068e2a8ba4ccde0615e91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14aee79e3d6d65e7ab7b600b385ea473194f3a2765691dcd6e67b6d675279922",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-12-18T22:09:22Z",
    "title_canon_sha256": "31a7e7a18ace4364b88771749346ee474e2dd2ed3049781f9f50ee07585d7c87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.6163",
    "kind": "arxiv",
    "version": 1
  }
}