Pith Number

pith:HQQPFDLT

pith:2008:HQQPFDLTZ34E66MEV7E7Y2MCQZ

not attested not anchored not stored refs pending

Complexity and white-dwarf structure

A.F. Pacheco, J. Sanudo

arxiv:0809.2882 v1 · 2008-09-17 · 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{HQQPFDLTZ34E66MEV7E7Y2MCQZ}

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	2026-05-18T02:35:14.790328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c20f28d73cef84f7984afc9fc6982867d6a43936fce56daea901b6bd71d55be

Aliases

arxiv: 0809.2882 · arxiv_version: 0809.2882v1 · doi: 10.48550/arxiv.0809.2882 · pith_short_12: HQQPFDLTZ34E · pith_short_16: HQQPFDLTZ34E66ME · pith_short_8: HQQPFDLT

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/HQQPFDLTZ34E66MEV7E7Y2MCQZ \
  | 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: 3c20f28d73cef84f7984afc9fc6982867d6a43936fce56daea901b6bd71d55be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06416c18ed34011a89fecd67743f59a3a1fd5e0a3d5fab40ccc344cc04d04e31",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-17T09:26:09Z",
    "title_canon_sha256": "3d5f75506ec1703f4607e4b059aeae1a4b39e0ac21c4ca789d41900bf87367bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2882",
    "kind": "arxiv",
    "version": 1
  }
}