Pith Number

pith:J4KQLYXZ

pith:2004:J4KQLYXZHVOIIGEZCRGM3ETFVF

not attested not anchored not stored refs pending

HD108: the mystery deepens with XMM-Newton observations

Belgium), G. Rauw, J.M. Vreux, Liege, M. De Becker (Institut d'Astrophysique et de Geophysique, Y. Naze

arxiv:astro-ph/0402480 v1 · 2004-02-20 · 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{J4KQLYXZHVOIIGEZCRGM3ETFVF}

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	2026-07-04T16:43:04.849312Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f1505e2f93d5c841899144ccd9265a9667cbb84c5658c7efb080738ef924099

Aliases

arxiv: astro-ph/0402480 · arxiv_version: astro-ph/0402480v1 · doi: 10.48550/arxiv.astro-ph/0402480 · pith_short_12: J4KQLYXZHVOI · pith_short_16: J4KQLYXZHVOIIGEZ · pith_short_8: J4KQLYXZ

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/J4KQLYXZHVOIIGEZCRGM3ETFVF \
  | 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: 4f1505e2f93d5c841899144ccd9265a9667cbb84c5658c7efb080738ef924099

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b502b9f504d9819231ca2a5ec6e017d61c05aeae73efc3d18bae13e8f215c9f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-20T08:54:14Z",
    "title_canon_sha256": "d845449d08205e692a0880b929162f49508937e4775f39edb75635b2b5968a18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402480",
    "kind": "arxiv",
    "version": 1
  }
}