Pith Number

pith:4VTAUDWQ

pith:2015:4VTAUDWQGEITQST77BDYGQJRQP

not attested not anchored not stored refs pending

Performance Task using Video Analysis and Modelling to promote K12 eight practices of science

Loo Kang Wee, Tze Kwang Leong

arxiv:1501.01532 v1 · 2015-01-07 · physics.ed-ph · physics.class-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{4VTAUDWQGEITQST77BDYGQJRQP}

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	2026-05-18T02:29:53.873857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5660a0ed03111384a7ff84783413183dfbc9fe01aad5d79074dee461cf0cce8

Aliases

arxiv: 1501.01532 · arxiv_version: 1501.01532v1 · doi: 10.48550/arxiv.1501.01532 · pith_short_12: 4VTAUDWQGEIT · pith_short_16: 4VTAUDWQGEITQST7 · pith_short_8: 4VTAUDWQ

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/4VTAUDWQGEITQST77BDYGQJRQP \
  | 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: e5660a0ed03111384a7ff84783413183dfbc9fe01aad5d79074dee461cf0cce8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26331c87383f8d95338026e420ae03a4382ed7e68ec8bd8778655a34e57752fb",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-01-07T15:50:30Z",
    "title_canon_sha256": "72d44f08bd4da4833d46027a25ca8da97285e21f8f7975ec14c139bfacd92581"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.01532",
    "kind": "arxiv",
    "version": 1
  }
}