Pith Number

pith:JI4BKPFE

pith:2004:JI4BKPFEK53WN2ZRPKBXJI6D55

not attested not anchored not stored refs pending

Hot subdwarfs from the ESO Supernova Ia Progenitor Survey - I. Atmospheric parameters and cool companions of sdB stars

D. Homeier, D. Reimers, N. Christlieb, R. Napiwotzki, T. Lisker, U. Heber, Z. Han

arxiv:astro-ph/0409136 v2 · 2004-09-06 · 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{JI4BKPFEK53WN2ZRPKBXJI6D55}

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	2026-07-04T16:44:38.478886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a38153ca4577766eb317a8374a3c3ef404986e1cddd8e9344a6fa523aa48c96

Aliases

arxiv: astro-ph/0409136 · arxiv_version: astro-ph/0409136v2 · doi: 10.48550/arxiv.astro-ph/0409136 · pith_short_12: JI4BKPFEK53W · pith_short_16: JI4BKPFEK53WN2ZR · pith_short_8: JI4BKPFE

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/JI4BKPFEK53WN2ZRPKBXJI6D55 \
  | 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: 4a38153ca4577766eb317a8374a3c3ef404986e1cddd8e9344a6fa523aa48c96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a761c6de089972b22c7d5225b690e31c52e1c43dfef4a89c2534a323e9d998e0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-06T20:00:04Z",
    "title_canon_sha256": "aa2176a3b0e60fcac38150f59aa979d02b84a628e6b86db658c0057b2929042d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409136",
    "kind": "arxiv",
    "version": 2
  }
}