Pith Number

pith:KQ7IK7OW

pith:1996:KQ7IK7OWWMIV3KVUHLLGRIUWVC

not attested not anchored not stored refs pending

Permanent Superhumps in V1974 Cyg

A. Retter, E.M. Leibowitz, E.O. Ofek (Wise Observatory)

arxiv:astro-ph/9611129 v1 · 1996-11-17 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KQ7IK7OWWMIV3KVUHLLGRIUWVC}

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	2026-05-18T01:21:56.622450Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

543e857dd6b3115daab43ad668a296a8b8e8c648846762aaff59d6cb4bd9d689

Aliases

arxiv: astro-ph/9611129 · arxiv_version: astro-ph/9611129v1 · doi: 10.48550/arxiv.astro-ph/9611129 · pith_short_12: KQ7IK7OWWMIV · pith_short_16: KQ7IK7OWWMIV3KVU · pith_short_8: KQ7IK7OW

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/KQ7IK7OWWMIV3KVUHLLGRIUWVC \
  | 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: 543e857dd6b3115daab43ad668a296a8b8e8c648846762aaff59d6cb4bd9d689

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e062b2f3cea4cdc3bfa507ec77344296cda110f4ab466a28ae7b300f571b662c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-11-17T13:56:27Z",
    "title_canon_sha256": "e5824caa1a4799dfe17d8e311e0d163e74983f9edb827b7c041751a04e3887ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9611129",
    "kind": "arxiv",
    "version": 1
  }
}