Pith Number

pith:LXFS4F5J

pith:2001:LXFS4F5JIJD3Z2BCUNMSLP66UX

not attested not anchored not stored refs pending

On the second overtone stability among SMC Cepheids

F. Caputo (Astron. Obs. of Roma), G. Bono, M. Marconi (Astron. Obs. of Capodimonte)

arxiv:astro-ph/0103107 v1 · 2001-03-07 · 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{LXFS4F5JIJD3Z2BCUNMSLP66UX}

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	2026-07-04T16:22:50.414268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5dcb2e17a94247bce822a35925bfdea5ff4719cc2b5528a7e2c65f0599b3bb77

Aliases

arxiv: astro-ph/0103107 · arxiv_version: astro-ph/0103107v1 · doi: 10.48550/arxiv.astro-ph/0103107 · pith_short_12: LXFS4F5JIJD3 · pith_short_16: LXFS4F5JIJD3Z2BC · pith_short_8: LXFS4F5J

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/LXFS4F5JIJD3Z2BCUNMSLP66UX \
  | 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: 5dcb2e17a94247bce822a35925bfdea5ff4719cc2b5528a7e2c65f0599b3bb77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2040a95a1f022f94721d4ac40fe39d49efdfce5576f5494b97848fa58a0afff9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-03-07T10:28:41Z",
    "title_canon_sha256": "dad1986ad195aa1cb111be945473e4912359efa1c6f81fc364d5528b0406b57c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0103107",
    "kind": "arxiv",
    "version": 1
  }
}