Pith Number

pith:4NUTXTUP

pith:2012:4NUTXTUPZXYZJCFNF2X2JXGHUS

not attested not anchored not stored refs pending

Period variations the intermediate polars EX Hya, FO Aqr and RXS J180340.0+401214

Igor Kudzej, Ivan L. Andronov, Karol Petrik, Pavol A. Dubovsky, Stanis{\l}aw Zo{\l}a, Tibor Hegedus, Vitalii V. Breus

arxiv:1212.6712 v1 · 2012-12-30 · 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{4NUTXTUPZXYZJCFNF2X2JXGHUS}

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	2026-05-18T03:37:31.118981Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3693bce8fcdf19488ad2eafa4dcc7a48de09cebc87b16016b266f0f0cd2fb11

Aliases

arxiv: 1212.6712 · arxiv_version: 1212.6712v1 · doi: 10.48550/arxiv.1212.6712 · pith_short_12: 4NUTXTUPZXYZ · pith_short_16: 4NUTXTUPZXYZJCFN · pith_short_8: 4NUTXTUP

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/4NUTXTUPZXYZJCFNF2X2JXGHUS \
  | 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: e3693bce8fcdf19488ad2eafa4dcc7a48de09cebc87b16016b266f0f0cd2fb11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b04789cc5bee093c32623b9d81eac8f13c8bdbe9f4dd5b93c56438c6a069d2f",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-12-30T13:17:33Z",
    "title_canon_sha256": "4fae0c341281c4c0b2b83349c4222309990164f63d7cdf996a4e42510058c7a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.6712",
    "kind": "arxiv",
    "version": 1
  }
}