Pith Number

pith:ILZR2LIX

pith:2018:ILZR2LIX43INBC6RZQ63NMQYWE

not attested not anchored not stored refs pending

Cyclic variations in the periods of RR Lyr stars

Alain Klotz, Ennio Poretti, Jean-Francois Le Borgne, Mercedes Correa, Monica Rainer

arxiv:1801.09702 v1 · 2018-01-29 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ILZR2LIX43INBC6RZQ63NMQYWE}

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	2026-05-18T00:24:54.088737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42f31d2d17e6d0d08bd1cc3db6b218b114b2906434f53027551f824c181e1c63

Aliases

arxiv: 1801.09702 · arxiv_version: 1801.09702v1 · doi: 10.48550/arxiv.1801.09702 · pith_short_12: ILZR2LIX43IN · pith_short_16: ILZR2LIX43INBC6R · pith_short_8: ILZR2LIX

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/ILZR2LIX43INBC6RZQ63NMQYWE \
  | 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: 42f31d2d17e6d0d08bd1cc3db6b218b114b2906434f53027551f824c181e1c63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b46b0154b3c48d265a702ab202727fa392658f23e216d31d110148635d20016",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-01-29T19:01:06Z",
    "title_canon_sha256": "1ef493b450caa8f46d60c79c3d9c5384116d8668d4676f8b02ef380ef7aa0e87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09702",
    "kind": "arxiv",
    "version": 1
  }
}