Pith Number

pith:4D7VAVTT

pith:2015:4D7VAVTTXIUHCMVX7EWFK6LX2J

not attested not anchored not stored refs pending

Video Analysis and Modeling Performance Task to promote becoming like scientists in classrooms

Loo Kang Wee, Tze Kwang Leong

arxiv:1502.06340 v2 · 2015-02-23 · physics.ed-ph · physics.class-ph · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4D7VAVTTXIUHCMVX7EWFK6LX2J}

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	2026-05-18T02:25:39.912269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0ff505673ba287132b7f92c557977d264712e8d40a1b83f6d6aecb8aad46362

Aliases

arxiv: 1502.06340 · arxiv_version: 1502.06340v2 · doi: 10.48550/arxiv.1502.06340 · pith_short_12: 4D7VAVTTXIUH · pith_short_16: 4D7VAVTTXIUHCMVX · pith_short_8: 4D7VAVTT

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/4D7VAVTTXIUHCMVX7EWFK6LX2J \
  | 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: e0ff505673ba287132b7f92c557977d264712e8d40a1b83f6d6aecb8aad46362

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ba0029e4e9eead3af55d822f84b22b7ababaf2d8f92a87bfceba689e413d4ea",
    "cross_cats_sorted": [
      "physics.class-ph",
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-02-23T08:18:04Z",
    "title_canon_sha256": "f279c446b60b65a08210405827dc147e617fbc4d535c12adcda724f289385889"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.06340",
    "kind": "arxiv",
    "version": 2
  }
}