Pith Number

pith:4U4CCQMH

pith:2013:4U4CCQMHAL4VSU3YRJ2AXFIIBU

not attested not anchored not stored refs pending

Spaxel Analysis: Probing the Physics of Star Formation in Ultraluminous Infrared Galaxies

Alaa Ali, Fr\'ed\'eric P. A. Vogt, Hassan M. Basurah, I-Ting Ho, Jeffrey Rich, Lisa J. Kewley, Michael A. Dopita, Morsi A. Amer

arxiv:1312.4633 v1 · 2013-12-17 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4U4CCQMHAL4VSU3YRJ2AXFIIBU}

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	2026-05-18T01:45:49.923782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e53821418702f95953788a740b95080d1f6071324a4702ef10a77caeafc4a2ef

Aliases

arxiv: 1312.4633 · arxiv_version: 1312.4633v1 · doi: 10.48550/arxiv.1312.4633 · pith_short_12: 4U4CCQMHAL4V · pith_short_16: 4U4CCQMHAL4VSU3Y · pith_short_8: 4U4CCQMH

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/4U4CCQMHAL4VSU3YRJ2AXFIIBU \
  | 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: e53821418702f95953788a740b95080d1f6071324a4702ef10a77caeafc4a2ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f56ad637ee705956810455a211ff9654bda7c9c0896d18aa15f5015ffc588aef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-12-17T04:14:07Z",
    "title_canon_sha256": "ae169136d6242ee05b1750805ec1342c7a9f9fb346c4279c3760f5517e319c15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.4633",
    "kind": "arxiv",
    "version": 1
  }
}