Pith Number

pith:NBLU2XT7

pith:2005:NBLU2XT7ANNFFOPSGMCJ44X7VQ

not attested not anchored not stored refs pending

Spectroscopic Analysis of sdB Binaries from the SPY Project

C. Karl, R. Napiwotzki, S. Geier, U. Heber

arxiv:astro-ph/0512388 v1 · 2005-12-15 · 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{NBLU2XT7ANNFFOPSGMCJ44X7VQ}

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	2026-07-04T14:51:27.973620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68574d5e7f035a52b9f233049e72ffac3d68266023e297d3a17ec4c86da5f583

Aliases

arxiv: astro-ph/0512388 · arxiv_version: astro-ph/0512388v1 · doi: 10.48550/arxiv.astro-ph/0512388 · pith_short_12: NBLU2XT7ANNF · pith_short_16: NBLU2XT7ANNFFOPS · pith_short_8: NBLU2XT7

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/NBLU2XT7ANNFFOPSGMCJ44X7VQ \
  | 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: 68574d5e7f035a52b9f233049e72ffac3d68266023e297d3a17ec4c86da5f583

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17d0dd372aefe95037134e2f1810ffb93232642825cf753c63e4d5a9813c3b9c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-12-15T10:06:29Z",
    "title_canon_sha256": "26c75ad3cdc29cd3cc6351db8a4b9ac7c64d2d9aaf2e9cdd17170be4444844a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0512388",
    "kind": "arxiv",
    "version": 1
  }
}