Pith Number

pith:FTMAY32G

pith:2005:FTMAY32GBLD5BD46ND4C7CZPGI

not attested not anchored not stored refs pending

B, V, I photometry of the complete sample of 23 Cepheids in the field of NGC 1866

A.M. Piersimoni, A.R. Walker, E. Brocato, F. Caputo, G. Raimondo, I. Musella, M. Del Principe, M. Marconi, P.B. Stetson, V. Castellani, V. Ripepi

arxiv:astro-ph/0509842 v1 · 2005-09-28 · 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{FTMAY32GBLD5BD46ND4C7CZPGI}

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	2026-05-18T04:33:50.724591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cd80c6f460ac7d08f9e68f82f8b2f323c6c62c408a5737fbd319f69abf3f3b0

Aliases

arxiv: astro-ph/0509842 · arxiv_version: astro-ph/0509842v1 · doi: 10.48550/arxiv.astro-ph/0509842 · pith_short_12: FTMAY32GBLD5 · pith_short_16: FTMAY32GBLD5BD46 · pith_short_8: FTMAY32G

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/FTMAY32GBLD5BD46ND4C7CZPGI \
  | 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: 2cd80c6f460ac7d08f9e68f82f8b2f323c6c62c408a5737fbd319f69abf3f3b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93933220b42235293e83d85ef845970dc8d44036daec90e0db14f1f0a58ec4df",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-28T13:11:05Z",
    "title_canon_sha256": "1b1a29eb9adcddf51563b8a54f9a4026096d6b09cc5a2eb5747272d0bcbe6ea3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509842",
    "kind": "arxiv",
    "version": 1
  }
}