Pith Number

pith:Q7S4GIDB

pith:2022:Q7S4GIDBG6CFFIROJ22MYVV4AE

not attested not anchored not stored refs pending

A new and homogeneous metallicity scale for Galactic classical Cepheids II. The abundance of iron and alpha elements

A. Pietrinferni, B. Lemasle, F. Th\'ev\'enin, G. Bono, G. Fiorentino, J. Crestani, J. Storm, L. Inno, L. Porcelli, M.A.T. Groenewegen, M. Bergemann, M. Dall'Ora, M. Monelli, M. Tantalo, N. Matsunaga, P. Fran\c{c}ois, R. Da Silva, R.-P. Kudritzki, V. D'Orazi, V.F. Braga, V. Kovtyukh

arxiv:2202.07945 v1 · 2022-02-16 · astro-ph.SR · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q7S4GIDBG6CFFIROJ22MYVV4AE}

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	2026-07-05T04:25:55.670695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87e5c32061378452a22e4eb4cc56bc012198547dd084506130979a240f8afe3b

Aliases

arxiv: 2202.07945 · arxiv_version: 2202.07945v1 · doi: 10.48550/arxiv.2202.07945 · pith_short_12: Q7S4GIDBG6CF · pith_short_16: Q7S4GIDBG6CFFIRO · pith_short_8: Q7S4GIDB

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/Q7S4GIDBG6CFFIROJ22MYVV4AE \
  | 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: 87e5c32061378452a22e4eb4cc56bc012198547dd084506130979a240f8afe3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6b199e37f826dd3b5b3e193203a5080b386731a41764dcc4a9b75b3cded43cc",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2022-02-16T09:19:00Z",
    "title_canon_sha256": "3791331bec7da571c6d749154b7f12e3b762a651303b7ddc5186368e98a66a5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.07945",
    "kind": "arxiv",
    "version": 1
  }
}