Pith Number

pith:RZCX4U7X

pith:2001:RZCX4U7XATMBWTBMLVTMAJQZZZ

not attested not anchored not stored refs pending

Improving the mass determination of Galactic Cepheids

F. Caputo (Astron. Obs. of Roma), G. Bono (Astron. Obs. of Roma), M. Marconi (Astron. Obs. of Capodimonte), P. Fouque' (Observatoire de Paris-Meudon; ESO Chile), W.P. Gieren (Univ. de Concepcion)

arxiv:astro-ph/0108271 v1 · 2001-08-16 · 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{RZCX4U7XATMBWTBMLVTMAJQZZZ}

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.

Cited by

1 paper in Pith

Estimation of Classical Cepheid's Physical Parameters from NIR Light Curves

Receipt and verification

First computed	2026-07-04T16:23:58.842496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e457e53f704d81b4c2c5d66c02619ce73c3b038075d725acb1efb79ecad90af

Aliases

arxiv: astro-ph/0108271 · arxiv_version: astro-ph/0108271v1 · doi: 10.48550/arxiv.astro-ph/0108271 · pith_short_12: RZCX4U7XATMB · pith_short_16: RZCX4U7XATMBWTBM · pith_short_8: RZCX4U7X

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/RZCX4U7XATMBWTBMLVTMAJQZZZ \
  | 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: 8e457e53f704d81b4c2c5d66c02619ce73c3b038075d725acb1efb79ecad90af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7f12ecb1f4bcddf04736e26e0c1c6cf9c2752fca7f27fa4fa36014375c57cb5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-08-16T08:35:11Z",
    "title_canon_sha256": "f2c982574c60765d138739bc988d6134f0fd994eea29129b3310288d79301fb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0108271",
    "kind": "arxiv",
    "version": 1
  }
}