Pith Number

pith:OFE6D54V

pith:2009:OFE6D54VOPIKT2PCABG2HTJ7LI

not attested not anchored not stored refs pending

Revisiting the fossil group candidates UGC 842 and NGC 6034

(2)Gemini Observatory, 3), (3)LNA, Brazil, Brazil), Chile, Claudia Mendes de Oliveira (1), Daiana Ribeiro Bortoletto (1, Eduardo Cypriano (1), Eleazar Rodrigo Carrasco (2), Gast\~ao Bierrenbach Lima Neto (1) ((1)IAG/USP, Laerte Sodr\'e Jr.(1), Raimundo Lopes de Oliveira (1)

arxiv:0911.1105 v2 · 2009-11-05 · 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{OFE6D54VOPIKT2PCABG2HTJ7LI}

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	2026-05-18T02:10:59.138504Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7149e1f79573d0a9e9e2004da3cd3f5a3a9138b25cd4c995d7a7a99e06bbb4ab

Aliases

arxiv: 0911.1105 · arxiv_version: 0911.1105v2 · doi: 10.48550/arxiv.0911.1105 · pith_short_12: OFE6D54VOPIK · pith_short_16: OFE6D54VOPIKT2PC · pith_short_8: OFE6D54V

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/OFE6D54VOPIKT2PCABG2HTJ7LI \
  | 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: 7149e1f79573d0a9e9e2004da3cd3f5a3a9138b25cd4c995d7a7a99e06bbb4ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b6bd2abd059dff192d390bfd91606a379289a109218b658dd6bc4bd1a82d560",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-05T19:10:50Z",
    "title_canon_sha256": "7a4a98f194f2fc96df83d2f1c9a21c0acd4bb7c2e14f34cdff52e56f13904fbb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1105",
    "kind": "arxiv",
    "version": 2
  }
}