Pith Number

pith:ZL7AGLJB

pith:2004:ZL7AGLJBCEOV7TVXXQJOG3WCM5

not attested not anchored not stored refs pending

Planetary Nebulae Kinematics in M31

Denise Hurley-Keller, Heather L. Morrison, Paul Harding & George Jacoby

arxiv:astro-ph/0408137 v1 · 2004-08-07 · 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{ZL7AGLJBCEOV7TVXXQJOG3WCM5}

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	2026-05-18T01:07:32.279590Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cafe032d21111d5fceb7bc12e36ec26741d614099725dc2b3b0a50f9436f65c5

Aliases

arxiv: astro-ph/0408137 · arxiv_version: astro-ph/0408137v1 · doi: 10.48550/arxiv.astro-ph/0408137 · pith_short_12: ZL7AGLJBCEOV · pith_short_16: ZL7AGLJBCEOV7TVX · pith_short_8: ZL7AGLJB

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/ZL7AGLJBCEOV7TVXXQJOG3WCM5 \
  | 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: cafe032d21111d5fceb7bc12e36ec26741d614099725dc2b3b0a50f9436f65c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02c805806802f517f0325fcefa765587f200746fda29c198959e9db3e1f46ec3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-08-07T07:09:10Z",
    "title_canon_sha256": "0cac8d161212be1f85e5220caaa710546b4a32cbdc9c18d32a65242dcff32d23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0408137",
    "kind": "arxiv",
    "version": 1
  }
}