Pith Number

pith:TFN3OVPW

pith:2001:TFN3OVPWM7ZIJNGIYFWME4DOMF

not attested not anchored not stored refs pending

The angular diameter and distance of the Cepheid Zeta Geminorum

G. Perrin, M. G. Lacasse, M.Schoeller, P. Kervella, V. Coude du Foresto, W. A. Traub

arxiv:astro-ph/0102359 v1 · 2001-02-21 · 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{TFN3OVPWM7ZIJNGIYFWME4DOMF}

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	2026-07-04T16:22:45.814383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

995bb755f667f284b4c8c16cc2706e614fca2af8448142085bf36f3579a8de12

Aliases

arxiv: astro-ph/0102359 · arxiv_version: astro-ph/0102359v1 · doi: 10.48550/arxiv.astro-ph/0102359 · pith_short_12: TFN3OVPWM7ZI · pith_short_16: TFN3OVPWM7ZIJNGI · pith_short_8: TFN3OVPW

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/TFN3OVPWM7ZIJNGIYFWME4DOMF \
  | 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: 995bb755f667f284b4c8c16cc2706e614fca2af8448142085bf36f3579a8de12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ea320d4cfc293622b561d49d1cf57dfae75996cb5d3759d7e067acdb70595a5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-02-21T14:52:51Z",
    "title_canon_sha256": "e7a2a18d9096a4398ddbce7881b6df6f4a55ffcc46290c15896e535603c39823"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0102359",
    "kind": "arxiv",
    "version": 1
  }
}