Pith Number

pith:NPWPHBHQ

pith:2011:NPWPHBHQHPLA773UVEUBLVW2KA

not attested not anchored not stored refs pending

Comet Machholz (C/2004 Q2): morphological structures in the inner coma and rotation parameters

Cesare Guaita, Cristiano B. Cosmovici, Federico Manzini, Gottfried Schwarz, Josep Coloma, Lorenzo Comolli, Raoul Behrend, Roberto Crippa, Virginio Oldani

arxiv:1109.4163 v1 · 2011-09-19 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPWPHBHQHPLA773UVEUBLVW2KA}

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	2026-05-18T02:00:29.036054Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6becf384f03bd60fff74a92815d6da5013d9406328789cb46b66d234b94688dd

Aliases

arxiv: 1109.4163 · arxiv_version: 1109.4163v1 · doi: 10.48550/arxiv.1109.4163 · pith_short_12: NPWPHBHQHPLA · pith_short_16: NPWPHBHQHPLA773U · pith_short_8: NPWPHBHQ

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/NPWPHBHQHPLA773UVEUBLVW2KA \
  | 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: 6becf384f03bd60fff74a92815d6da5013d9406328789cb46b66d234b94688dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ca2a9e886e0c59ae35a9eb0ada1b7faae9c823151bc4b42876146dd0fcc9cc4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-09-19T20:20:14Z",
    "title_canon_sha256": "36d6396062656fea6efe20281c048fa6e1e10e953a87c3ccc8e87e30df5de267"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4163",
    "kind": "arxiv",
    "version": 1
  }
}