Pith Number

pith:ORV2YKPS

pith:2013:ORV2YKPST7KKOVLACSHBVGLYC4

not attested not anchored not stored refs pending

An Observation of a Circular Motion using Ordinary Appliances: Train Toy, Digital Camera, and Android based Smartphone

Meldawati Nasri, Sparisoma Viridi, Tarex Moghrabi

arxiv:1307.2912 v1 · 2013-07-09 · physics.pop-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{ORV2YKPST7KKOVLACSHBVGLYC4}

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	2026-05-18T03:18:41.912240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

746bac29f29fd4a75560148e1a9978172c9e56b0ff56de4ee866711a464857f3

Aliases

arxiv: 1307.2912 · arxiv_version: 1307.2912v1 · doi: 10.48550/arxiv.1307.2912 · pith_short_12: ORV2YKPST7KK · pith_short_16: ORV2YKPST7KKOVLA · pith_short_8: ORV2YKPS

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/ORV2YKPST7KKOVLACSHBVGLYC4 \
  | 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: 746bac29f29fd4a75560148e1a9978172c9e56b0ff56de4ee866711a464857f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76b7f81227a1de4198f2a66747f720f4cf37cda21edd8df21a036e7eadfd744b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2013-07-09T11:22:57Z",
    "title_canon_sha256": "85c1843c5752cafe11071c1402ce0fe90d2bad0144282674c8e060dbc0e06e29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2912",
    "kind": "arxiv",
    "version": 1
  }
}