Pith Number

pith:QR2SHFDE

pith:2009:QR2SHFDERE64MHTTEP655425AN

not attested not anchored not stored refs pending

V371 Per - A Thick-Disk, Short-Period F/1O Cepheid

Arne A. Henden, Doug L. Welch, E.G. Schmidt, Patrick Wils, Stelios Kleidis

arxiv:0910.5225 v1 · 2009-10-27 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QR2SHFDERE64MHTTEP655425AN}

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	2026-05-18T02:34:12.716671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8475239464893dc61e7323fddef35d036461892f0105205020cda5002172d3f8

Aliases

arxiv: 0910.5225 · arxiv_version: 0910.5225v1 · doi: 10.48550/arxiv.0910.5225 · pith_short_12: QR2SHFDERE64 · pith_short_16: QR2SHFDERE64MHTT · pith_short_8: QR2SHFDE

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/QR2SHFDERE64MHTTEP655425AN \
  | 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: 8475239464893dc61e7323fddef35d036461892f0105205020cda5002172d3f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77aa77abc0041d595a8601d5e94e5ab5a4d7d816e3e304793de1e9927692c7d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-10-27T20:23:39Z",
    "title_canon_sha256": "18268f722c82133888e6446a976df42399e3d75a087a763e611f5895b363137a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5225",
    "kind": "arxiv",
    "version": 1
  }
}