Pith Number

pith:WQ77OUVX

pith:2003:WQ77OUVXIXDRWKQLFHKW72JFTH

not attested not anchored not stored refs pending

The Puzzles of RX J1856.5-3754: Neutron Star or Quark Star?

F. Haberl (1), J. E. Truemper (1), V. Burwitz (1), V.E. Zavlin (1) ((1) Max-Planck-Intitut fuer extraterrestrische Physik)

arxiv:astro-ph/0312600 v1 · 2003-12-23 · 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{WQ77OUVXIXDRWKQLFHKW72JFTH}

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	2026-07-04T16:38:03.735650Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b43ff752b745c71b2a0b29d56fe92599da0224a722466b7a6b9ad012e42b13c3

Aliases

arxiv: astro-ph/0312600 · arxiv_version: astro-ph/0312600v1 · doi: 10.48550/arxiv.astro-ph/0312600 · pith_short_12: WQ77OUVXIXDR · pith_short_16: WQ77OUVXIXDRWKQL · pith_short_8: WQ77OUVX

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/WQ77OUVXIXDRWKQLFHKW72JFTH \
  | 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: b43ff752b745c71b2a0b29d56fe92599da0224a722466b7a6b9ad012e42b13c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dcdf4cf3ec0ec21f90bf2d008c21633c87a34f774accf8c60a8bba70c8843e0c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-12-23T10:21:25Z",
    "title_canon_sha256": "cf6fc9a645aa34d277b30eb7a5c5c7fc6412aec6f211c00865951b65fd40bf81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0312600",
    "kind": "arxiv",
    "version": 1
  }
}