Pith Number

pith:5QGN7IWM

pith:2013:5QGN7IWMMFGMEGYWJUI6I3KLUX

not attested not anchored not stored refs pending

The planetary nebula population in the halo of M87

A. Longobardi, K.C. Freeman, L. Coccato, M. Arnaboldi, O. Gerhard, S. Okamura

arxiv:1309.0006 v1 · 2013-08-30 · 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{5QGN7IWMMFGMEGYWJUI6I3KLUX}

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	2026-05-18T01:47:56.370015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec0cdfa2cc614cc21b164d11e46d4ba5d1c84cdd0dd4bed660aa1b179ea093cb

Aliases

arxiv: 1309.0006 · arxiv_version: 1309.0006v1 · doi: 10.48550/arxiv.1309.0006 · pith_short_12: 5QGN7IWMMFGM · pith_short_16: 5QGN7IWMMFGMEGYW · pith_short_8: 5QGN7IWM

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/5QGN7IWMMFGMEGYWJUI6I3KLUX \
  | 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: ec0cdfa2cc614cc21b164d11e46d4ba5d1c84cdd0dd4bed660aa1b179ea093cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cea86f7f6e5025eaff0f43b26fdb431bc25653bf0de0a22259b22abb09a8fe6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-30T20:00:03Z",
    "title_canon_sha256": "761d8eb47f8892e673b01b9b6419249e12182fc308244ac2df4dd3b5846dd38f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.0006",
    "kind": "arxiv",
    "version": 1
  }
}