Pith Number

pith:52WNBABL

pith:2005:52WNBABLLCYIDGHO76NET2JWJH

not attested not anchored not stored refs pending

On the evidence for discs around Blue Straggler stars

John M. Porter (Liverpool John Moores University, UK), UK) R. H. D. Townsend (Bartol Research Institute, University College London

arxiv:astro-ph/0503437 v1 · 2005-03-21 · 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{52WNBABLLCYIDGHO76NET2JWJH}

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	2026-05-18T04:22:20.790079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eeacd0802b58b08198eeff9a49e93649caf5fa35ad52c3c8ca88ee118c961da5

Aliases

arxiv: astro-ph/0503437 · arxiv_version: astro-ph/0503437v1 · doi: 10.48550/arxiv.astro-ph/0503437 · pith_short_12: 52WNBABLLCYI · pith_short_16: 52WNBABLLCYIDGHO · pith_short_8: 52WNBABL

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/52WNBABLLCYIDGHO76NET2JWJH \
  | 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: eeacd0802b58b08198eeff9a49e93649caf5fa35ad52c3c8ca88ee118c961da5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51a06ffa956dae930785c52ddb1f5472887e4c9d32fed0d6c76c70b3e9a2c3dd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-03-21T11:16:05Z",
    "title_canon_sha256": "a9596ed40fb83d599737ab93f1516dc0cbf5a5c1538e5f3c9734ee8c35bb871b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0503437",
    "kind": "arxiv",
    "version": 1
  }
}