Pith Number

pith:OZHO52EY

pith:2001:OZHO52EY6Y7QMMBVKOSOSBXQAI

not attested not anchored not stored refs pending

Binaries discovered by the SPY project I. HE 1047-0436: a subdwarf B + white dwarf system

C. Karl, E.-M. Pauli, H. Drechsel, H. Edelmann, N. Christlieb, R. Napiwotzki, U. Heber

arxiv:astro-ph/0109042 v1 · 2001-09-04 · 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{OZHO52EY6Y7QMMBVKOSOSBXQAI}

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	2026-07-04T16:24:03.987212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

764eeee898f63f06303553a4e906f0021b868fb801396ed01b51f6e40313a2ab

Aliases

arxiv: astro-ph/0109042 · arxiv_version: astro-ph/0109042v1 · doi: 10.48550/arxiv.astro-ph/0109042 · pith_short_12: OZHO52EY6Y7Q · pith_short_16: OZHO52EY6Y7QMMBV · pith_short_8: OZHO52EY

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/OZHO52EY6Y7QMMBVKOSOSBXQAI \
  | 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: 764eeee898f63f06303553a4e906f0021b868fb801396ed01b51f6e40313a2ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19ef50cdec564e9176fd6828021803e62f794f7e165038a8605d0d007c84f29d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-04T10:32:19Z",
    "title_canon_sha256": "a7476ffaefa74b7475918403007426e35599fdeeae74fde12beb74194bc1fdc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109042",
    "kind": "arxiv",
    "version": 1
  }
}