Pith Number

pith:72L7BGU4

pith:2013:72L7BGU4DWPRI7MPBOMJYTQMK2

not attested not anchored not stored refs pending

Spectropolarimetric study of the classical Cepheid $\eta$ Aql: pulsation and magnetic field

D.Baklanova, S.Plachinda, V.Butkovskaya, V.Butkovskyi

arxiv:1311.1943 v1 · 2013-11-08 · 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{72L7BGU4DWPRI7MPBOMJYTQMK2}

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	2026-05-18T01:46:32.949753Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe97f09a9c1d9f147d8f0b989c4e0c56aea74ad128c4a307877dc4ff841ae4ac

Aliases

arxiv: 1311.1943 · arxiv_version: 1311.1943v1 · doi: 10.48550/arxiv.1311.1943 · pith_short_12: 72L7BGU4DWPR · pith_short_16: 72L7BGU4DWPRI7MP · pith_short_8: 72L7BGU4

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/72L7BGU4DWPRI7MPBOMJYTQMK2 \
  | 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: fe97f09a9c1d9f147d8f0b989c4e0c56aea74ad128c4a307877dc4ff841ae4ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8694e65eb3cf98335175d7737adc227e36b0442f677e3c92154dfdb32f25884",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-11-08T11:54:11Z",
    "title_canon_sha256": "991e396c07609d0d8a6fd357c5e93a40984c3fce02637d96b5beead3c9e1b935"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1943",
    "kind": "arxiv",
    "version": 1
  }
}