Pith Number

pith:L6XXZANC

pith:2005:L6XXZANCLTVUHIXK77NUIFIDDU

not attested not anchored not stored refs pending

Classical Cepheids as Age Indicators

F. Caputo, G. Bono, G. Pietrzynski, M. Marconi, P. Pietrukowicz, S. Cassisi

arxiv:astro-ph/0510033 v1 · 2005-10-03 · 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{L6XXZANCLTVUHIXK77NUIFIDDU}

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	2026-05-18T04:33:50.717401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5faf7c81a25ceb43a2eaffdb4415031d35bc2f82ea1e4151121319c40dd9f0b4

Aliases

arxiv: astro-ph/0510033 · arxiv_version: astro-ph/0510033v1 · doi: 10.48550/arxiv.astro-ph/0510033 · pith_short_12: L6XXZANCLTVU · pith_short_16: L6XXZANCLTVUHIXK · pith_short_8: L6XXZANC

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/L6XXZANCLTVUHIXK77NUIFIDDU \
  | 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: 5faf7c81a25ceb43a2eaffdb4415031d35bc2f82ea1e4151121319c40dd9f0b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4f1346ce544ba7d5fee3594c7c45d08f18f86df3557153de440036ce9d0bff8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-10-03T10:19:34Z",
    "title_canon_sha256": "a55f671be09c4fb57d081255fe7952b9df66c0a298de9c6e960f88f76ade2ef1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0510033",
    "kind": "arxiv",
    "version": 1
  }
}