Pith Number

pith:3GFCG5VY

pith:2004:3GFCG5VY4E5OEMO65NVEVWHVCC

not attested not anchored not stored refs pending

Chemical abundances in spiral and irregular galaxies. O and N abundances derived from global emission--line spectra

(2) Laboratoire d'Astrophysique de Toulouse et Tarbes, (3) Instituto de Astrofisica de Andalucia), J.M. Vilchez (3) ((1) Main Astron. Obs. of Nat. Academy of Sc. of Ukraine, L.S.Pilyugin (1), T.Contini (2)

arxiv:astro-ph/0405312 v1 · 2004-05-17 · astro-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{3GFCG5VY4E5OEMO65NVEVWHVCC}

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	2026-07-04T16:43:46.667915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d98a2376b8e13ae231deeb6a4ad8f510ac0097b9bba5b24d406cfc56cce2aba7

Aliases

arxiv: astro-ph/0405312 · arxiv_version: astro-ph/0405312v1 · doi: 10.48550/arxiv.astro-ph/0405312 · pith_short_12: 3GFCG5VY4E5O · pith_short_16: 3GFCG5VY4E5OEMO6 · pith_short_8: 3GFCG5VY

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/3GFCG5VY4E5OEMO65NVEVWHVCC \
  | 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: d98a2376b8e13ae231deeb6a4ad8f510ac0097b9bba5b24d406cfc56cce2aba7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "418ffe449b206876fb0ed8a6432d47c851b41afbed516853a840ae32a7cba94a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-05-17T09:46:04Z",
    "title_canon_sha256": "3464afe9e97403cdfad0c076586097286e3867e15bee25a987286ed93c73ec4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0405312",
    "kind": "arxiv",
    "version": 1
  }
}