Pith Number

pith:UG4HYM5V

pith:2014:UG4HYM5V4J2WTWQ4SZHJLMIVKB

not attested not anchored not stored refs pending

Comets in ancient India

Patrick Das Gupta

arxiv:1411.7312 v2 · 2014-11-25 · physics.pop-ph · physics.hist-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{UG4HYM5V4J2WTWQ4SZHJLMIVKB}

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	2026-05-18T02:32:30.333187Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1b87c33b5e27569da1c964e95b115506a21e434ae2bfa85a291c7772a05a9da

Aliases

arxiv: 1411.7312 · arxiv_version: 1411.7312v2 · doi: 10.48550/arxiv.1411.7312 · pith_short_12: UG4HYM5V4J2W · pith_short_16: UG4HYM5V4J2WTWQ4 · pith_short_8: UG4HYM5V

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/UG4HYM5V4J2WTWQ4SZHJLMIVKB \
  | 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: a1b87c33b5e27569da1c964e95b115506a21e434ae2bfa85a291c7772a05a9da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1a6fdc9d97a4f638d2305390f7aef7b9655cb90d0d29383ecc258b105d2c2d5",
    "cross_cats_sorted": [
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2014-11-25T19:25:47Z",
    "title_canon_sha256": "2f83c9af74d13605f3acd7bdb41ac2cc1652d915372530e107e093435db7e4f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.7312",
    "kind": "arxiv",
    "version": 2
  }
}