Pith Number

pith:6KBJZGOA

pith:2015:6KBJZGOAI5TTMYHIEVBZFT63JZ

not attested not anchored not stored refs pending

Using Tracker to understand toss up and free fall motion: a case study

Ching Tan, Kim Kia Tan, Loo Kang Wee, Tze Kwang Leong

arxiv:1501.02858 v3 · 2015-01-13 · 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{6KBJZGOAI5TTMYHIEVBZFT63JZ}

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	2026-05-18T01:23:49.105259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2829c99c047673660e8254392cfdb4e56ee5e8dc23280fe8f416a16d55669cd

Aliases

arxiv: 1501.02858 · arxiv_version: 1501.02858v3 · doi: 10.48550/arxiv.1501.02858 · pith_short_12: 6KBJZGOAI5TT · pith_short_16: 6KBJZGOAI5TTMYHI · pith_short_8: 6KBJZGOA

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/6KBJZGOAI5TTMYHIEVBZFT63JZ \
  | 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: f2829c99c047673660e8254392cfdb4e56ee5e8dc23280fe8f416a16d55669cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75a25734573de7a3625466bbf7b61613b5d4f9f1c8fa82512e64b51a92c0747c",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-01-13T01:23:41Z",
    "title_canon_sha256": "098cfbfedb6b28df7359dfa97f2204611e7d5806a796d92e2e81754db5f4c1af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02858",
    "kind": "arxiv",
    "version": 3
  }
}