Pith Number

pith:WQY3HCQN

pith:2020:WQY3HCQN62IX3CCMQWEKMNSQRT

not attested not anchored not stored refs pending

The Spin-Period History of Intermediate Polars

(2) Univ. de Huelva, (3) Middlebury Coll., (4) Center for Backyard Astrophysics, (5) Texas A&M Univ.-Commerce, (6) Viktor Rydberg-Djursholm, (7) Aarhus Univ.), Berto Monard (4), David Cejudo (4), David R. Skillman (4), Emir Karamehmetoglu (7), Enrique de Miguel (2), Franz-Josef Hambsch (4), Geoffrey Stone (4), George Roberts (4), Gordon Myers (4), Greg Bolt (4), Helena Uthas (6), Jennie McCormick (4) ((1) Columbia Univ., Jim Jones (4), Jim Seargeant (4), Jonathan Kemp (3), Joseph Patterson (1), Joseph Ulowetz (4), Kenneth Menzies (4), Lewis M. Cook (4), Matt A. Wood (5), Robert Rea (4), Shawn Dvorak (4), Simon Lowther (4), Thomas Krajci (4), Tonny Vanmunster (4), Tut Campbell (4), William Goff (4), William Stein (4)

arxiv:2001.07288 v1 · 2020-01-20 · 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{WQY3HCQN62IX3CCMQWEKMNSQRT}

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	2026-07-05T01:18:48.667133Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b431b38a0df6917d884c8588a636508cfdacea6000c0b0ef01f2a17d73476713

Aliases

arxiv: 2001.07288 · arxiv_version: 2001.07288v1 · doi: 10.48550/arxiv.2001.07288 · pith_short_12: WQY3HCQN62IX · pith_short_16: WQY3HCQN62IX3CCM · pith_short_8: WQY3HCQN

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/WQY3HCQN62IX3CCMQWEKMNSQRT \
  | 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: b431b38a0df6917d884c8588a636508cfdacea6000c0b0ef01f2a17d73476713

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50dc8b18188fc607b2784b26a69632dcb3b850bbb98922fc5f104f4e92f36e1e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-01-20T23:57:18Z",
    "title_canon_sha256": "8758317c3e656f85b6f2196b96179292d664698c5c5e4d9988193c54b5e48faa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.07288",
    "kind": "arxiv",
    "version": 1
  }
}