Pith Number

pith:VBBU7X6Z

pith:2013:VBBU7X6ZOE52NJYPQIIDSD6A5E

not attested not anchored not stored refs pending

Variable stars in the ultra-faint dwarf spheroidal galaxy Ursa Major I

Alessia Garofalo, Felice Cusano, Gisella Clementini, Giuseppina Coppola, Ilaria Musella, Marcella Marconi, Maria Ida Moretti, Massimo Dall'Ora, Vincenzo Ripepi

arxiv:1302.3230 v1 · 2013-02-13 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VBBU7X6ZOE52NJYPQIIDSD6A5E}

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	2026-05-18T01:51:41.601883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8434fdfd9713ba6a70f8210390fc0e901c19307f5cee602b2c37e32136bfd29

Aliases

arxiv: 1302.3230 · arxiv_version: 1302.3230v1 · doi: 10.48550/arxiv.1302.3230 · pith_short_12: VBBU7X6ZOE52 · pith_short_16: VBBU7X6ZOE52NJYP · pith_short_8: VBBU7X6Z

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/VBBU7X6ZOE52NJYPQIIDSD6A5E \
  | 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: a8434fdfd9713ba6a70f8210390fc0e901c19307f5cee602b2c37e32136bfd29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b09dfc1a28fb79cb47ee64ebb7dc96e19c0b22627af46c495b69782bb94ad4a",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-02-13T21:01:05Z",
    "title_canon_sha256": "38565698e5d2923f1859bd8c5dd8d8621c44f23bc46876bf9121a950324de6d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.3230",
    "kind": "arxiv",
    "version": 1
  }
}